Juvenile tub

This application claims priority under 35 U.S.C. §119(e) to U.S. Provisional Application Ser. No. 61/863,291, filed Aug. 7, 2013, which is expressly incorporated by reference herein.

The present disclosure relates to portable baby bathtubs, and particularly to tubs that can be used in sinks. More particularly, the present disclosure relates to foldable bathtubs for children.

According to the present disclosure, a juvenile tub comprises a base, a foldable footrest coupled to the base, and a foldable headrest coupled to the base. The base is formed to store bathwater for bathing a child placed in the juvenile tub.

In illustrative embodiments, the central base is formed to include an elevated child-receiving cradle located between separate first and second bathwater reservoirs formed in the central base. The central base includes an upwardly extending contoured and rounded in-molded first side bolster positioned to lie between the first bathwater reservoir and the child-receiving cradle. The central base also includes an upwardly extending contoured and rounded in-molded second side bolster positioned to lie between the child-receiving cradle and the second bathwater reservoir. The side bolsters have an ergonomic shape selected in accordance with the present disclosure to provide means for supporting children of multiple sizes and ages in a proper position in the child-receiving cradle during bath time.

In illustrative embodiments, a lock is provided for each of the pivotable footrest and headrest. The footrest lock is mounted for pivotable movement on a foot end of the central base and configured to mate with a footrest lock receiver included in the footrest. The headrest lock is mounted for pivotable movement on a head end of the central base and configured to mate with a headrest lock receiver included in the headrest. Each of the footrest and headrest lock receivers includes a latch cam and a latch retainer arranged to mate with a spring-biased latch included in the companion lock.

Additional features of the present disclosure will become apparent to those skilled in the art upon consideration of illustrative embodiments exemplifying the best mode of carrying out the disclosure as presently perceived.

The detailed description particularly refers to the accompanying figures in which:

FIG. 1 is a perspective view of a juvenile tub in accordance with the present disclosure showing that the tub includes a central base formed to include an elevated child-receiving cradle flanked by two bathwater reservoirs and showing that the child-receiving cradle is defined by a rearwardly sloping inclined backrest, a forwardly sloping inclined seat, and a pair of laterally spaced-apart ergonomically contoured side bolsters separating the seat and the backrest from the bathwater reservoirs and cooperating to limit lateral side-to-side movement of a child placed in the child-receiving cradle during bath time and showing a lockable folding footrest coupled to a forward (near) end of the central base for pivotable movement about a footrest axis as suggested in FIG. 2 and a lockable folding headrest coupled to an opposite rearward (far) end of the central base for pivotable movement about a headrest axis as suggested in FIG. 2 ;

FIG. 2 is a perspective view similar to FIG. 1 showing forward pivoting movement of the headrest about the headrest axis toward the footrest away from an expanded-use position shown in FIG. 1 and rearward pivoting movement of the footrest about the footrest axis toward the headrest away from an expanded-use position shown in FIG. 1 ;

FIG. 3 is a perspective view similar to FIGS. 1 and 2 showing the headrest and footrest in their collapsed-storage positions overlying the central base;

FIG. 4 is an exploded perspective assembly view of the juvenile tub components shown in FIGS. 1-3 along with a pliable bathmat and showing illustrative embodiments of the releasable footrest and headrest locks shown diagrammatically in FIG. 1 and configured to be mounted for pivotable movement on opposite ends of the central base as suggested in FIG. 5 (footrest lock) and in FIG. 21 (headrest lock) and showing formation of the footrest to include a footrest lock receiver (shown in phantom) for mating with the footrest lock to retain the footrest in the expanded-use position shown in FIG. 1 and formation of the headrest to include a headrest lock receiver (shown in phantom) for mating with the headrest lock to retain the headrest in the expanded-use position shown in FIG. 1 ;

FIG. 5 is an enlarged partial perspective view of a foot end of the central base and showing that the central base is formed to include a footrest lock mount located under the seat of the child-receiving cradle included in the central base and configured to support the footrest lock for pivotable movement about a footrest-lock axis;

FIG. 6 is an enlarged perspective view of the footrest lock shown in FIGS. 4 and 5 and showing that the footrest lock includes a pivot axle, a latch extending to the right, a latch-biasing spring extending upwardly and to the left, and a downwardly extending latch-release handle and showing that the latch includes a hook carried on the free end of a cantilevered hook support;

FIG. 7 is an enlarged perspective view of the footrest with portions of a footrest shell broken away to show the footrest lock receiver;

FIG. 8 is an enlarged perspective view of a portion of the underside of the footrest showing the footrest lock receiver in more detail;

FIG. 8A is an enlarged sectional view taken along line 8 A- 8 A of FIG. 8 to show a convex curved exterior hook-camming surface provided on an L-shaped latch cam included in the footrest lock receiver;

FIG. 9 is an enlarged view of the juvenile tub of FIGS. 1-3 showing the headrest and footrest in their collapsed-storage positions;

FIG. 9A is an enlarged view of the circled region of FIG. 9 showing formation of two side-by-side convex exterior cam-follower surfaces provided on a hook included in a free end of the cantilevered hook support also included in the latch;

FIG. 10 is a partial sectional view taken along line 10 - 10 of FIG. 9 showing separation of the latch included in the footrest lock from the latch cam included in the footrest lock receiver when the footrest occupies the collapsed-storage position shown in FIG. 9 ;

FIG. 10A is an enlarged view of the circled region of FIG. 10 showing the curvature of the convex exterior cam-follower surface of the latch hook;

FIG. 11 is a perspective view similar to FIG. 9 showing counterclockwise pivotable movement of the footrest about the footrest axis toward the expanded-use position;

FIG. 11A is a partial perspective view of the juvenile tub of FIG. 11 showing the convex exterior surfaces of the hook on the free end of the latch of the footrest lock just before they mate in camming engagement with the latch cam included in the footrest lock receiver of the footrest;

FIG. 12 is a partial sectional view taken along line 12 - 12 of FIG. 11 showing the convex exterior cam-follower surface of the latch hook in close proximity to the convex curved exterior surface provided on the latch cam included in the footrest lock receiver of the footrest to pivot the latch in a counterclockwise direction about the footrest-lock axis against a biasing force generated by the latch-biasing spring;

FIG. 12A is an enlarged view of the circled region of FIG. 12 with a portion of an axle-mount flange included in the central base and shown in FIG. 11A broken away;

FIG. 13 is a perspective view similar to FIG. 11 showing the position of the footrest as it is pivoting in a counterclockwise direction about the footrest-lock axis and just before it reaches the expanded-use position shown in FIG. 15 ;

FIG. 13A is a partial perspective view of the juvenile tub of FIG. 13 showing engagement of the latch on an exterior surface of the latch cam;

FIG. 14 is an enlarged partial sectional view taken along line 14 - 14 showing engagement of a tip of the latch hook on an exterior surface of the latch cam just before snap-engagement of the spring-biased latch hook and a latch retainer included in the footrest lock receiver and located in close proximity to the latch cam to retain the footrest in the expanded-use position shown in FIGS. 1 and 15-17 ;

FIG. 14A is an enlarged view of the circled region of FIG. 14 ;

FIG. 15 is a perspective view similar to FIGS. 11 and 13 showing the footrest in the expanded-use position;

FIG. 16 is an enlarged partial sectional view taken along line 16 - 16 showing the hook included in the latch of the footrest lock extending into a hook-retainer space defined by the footrest lock receiver to mate with the latch retainer to retain the footrest in the expanded-use position;

FIG. 16A is an enlarged view of the circled region of FIG. 16 ;

FIG. 17 is a top perspective view of the juvenile tub of FIG. 1 showing the bathmat in place on portions of footrest, inclined seat, inclined backrest, and headrest and between the laterally spaced-apart and inwardly extending ergonomically contoured side bolsters of the child-receiving cradle and showing a left-side bathwater reservoir provided with a drain on a left side of the elevated cradle and a separate right-side bathwater reservoir on the right side of the elevated cradle;

FIG. 18 is a top plan view of the central base of the juvenile tub of FIGS. 1 and 17 ;

FIG. 19 is a foot-end front elevation of the central base of FIG. 18 ;

FIG. 20 is a head-end rear elevation of the central base of FIG. 18 ;

FIG. 21 is an enlarged partial perspective view of a head end of the central base and showing that the central base is formed to include a headrest lock mount located under the seat of the elevated child-receiving cradle included in the central base and configured to support the headrest lock for pivotable movement about a headrest-lock axis;

FIG. 22 is an enlarged perspective view of the headrest lock shown in FIGS. 4 and 5 and showing that the headrest lock includes a pivot axle extending along the headrest-lock axis, a latch extending to the right, a latch-biasing spring extending upwardly and to the left, and a downwardly extending latch-release handle and showing that the latch includes a hook carried on the free end of a cantilevered hook support;

FIG. 23 is an enlarged perspective view of the headrest;

FIG. 24 is an enlarged perspective view of a portion of the headrest showing the headrest lock receiver formed therein; and

FIG. 24A is an enlarged sectional view taken along line 24 A- 24 A showing a convex curved exterior hook-camming surface provided on an L-shaped latch cam included in the headrest lock receiver formed in the headrest.

A juvenile tub 10 includes a central base 12 , a pivotable footrest 14 , a releasable footrest lock 15 , a pivotable headrest 16 , and a releasable headrest lock 17 as suggested illustratively and diagrammatically in FIGS. 1-4 . Central base 12 is formed to include an elevated child-receiving cradle 20 flanked by left-side and right-side bathwater reservoirs 21 , 22 as shown, for example, in FIGS. 1, 17, and 18 .

Releasable footrest lock 15 is mounted on a foot end 12 F of central base 12 and operates automatically to retain footrest 14 in an expanded-use position shown in FIGS. 1 and 15 once footrest 14 has been pivoted from a compact collapsed-storage position shown in FIGS. 3 and 9 in a counterclockwise direction 101 about a footrest axis 14 A as suggested in FIGS. 9-16 . Footrest lock 15 includes a spring-biased latch 152 having a hook 152 H that is first cammed on a latch cam 400 included in footrest 14 and then mated with a latch retainer 452 included in footrest 14 during pivoting movement of footrest 14 about footrest axis 14 A in counterclockwise direction 101 to retain footrest 14 in an expanded-use position shown in FIGS. 1 and 15 .

Releasable headrest lock 17 is mounted on a head end 12 H of central base 12 and operates automatically to retain headrest 16 in an expanded-use position also shown in FIGS. 1 and 15 once headrest 16 has been pivoted from the compact collapsed-storage position shown in FIGS. 3 and 9 in a clockwise direction 102 about a headrest axis 16 A. Headrest lock 17 includes a spring-biased latch 172 having a hook 172 H that is first cammed on a latch cam 600 included in headrest 16 and then mated with a latch retainer 652 included in headrest 16 during pivoting of headrest 16 about headrest pivot axis 16 A in clockwise direction 102 to retain headrest 16 in an expanded-use position shown in FIG. 1 .

Footrest lock 15 and headrest lock 17 cooperated to define an expanded-use position retainer 18 as suggested in FIG. 1 . Retainer 18 is configured to retain footrest 14 and headrest 16 in the expanded-use position automatically in response to pivoting movement of footrest 14 about footrest axis 14 A and pivoting movement of headrest 16 about headrest axis 16 A to the expanded-use positions as suggested in FIGS. 2 and 3 .

Central base 12 remains in a stationary position on an underlying surface 100 during opening and closing pivoting movement of footrest 14 about footrest axis 14 A as suggested in FIGS. 1-3 and 10, 12, 14, and 16 . Central base 12 also remains stationary during opening and closing pivoting movement of headrest 16 about headrest axis 16 A as suggested in FIGS. 1-3 .

Child-receiving cradle 20 of central base 12 includes an upwardly extending ergonomically contoured first side bolster 201 that is adjacent to left-side bathwater reservoir 21 and an upwardly extending ergonomically contoured second side bolster 202 that is laterally spaced apart from first side bolster 201 and adjacent to right-side bathwater reservoir 22 as suggested in FIGS. 1, 4, and 17 . A child-support surface 203 is positioned to lie between and is coupled to side bolsters 201 , 202 and configured to support a child in a supine position between left-side and right-side bathwater reservoirs 21 , 22 during bath time. Child-support surface 203 includes a forwardly sloping inclined seat 204 extending from foot end 12 F to a midpoint of the side bolsters 201 , 202 and a rearwardly sloping inclined backrest 205 extending from seat 204 to headrest end 12 H as shown, for example, in FIGS. 1 and 4 . Seat 204 and backrest 205 cooperate in illustrative embodiments to provide child-support surface 203 with an upwardly facing concave surface as suggested in FIGS. 1, 10, and 21 . Child-support surface 203 has a generally hourglass-shaped profile when viewed from above as suggested in FIGS. 1 and 18 .

Left-side bathwater reservoir 21 is defined by a low-elevation floor 21 F and an endless side panel 21 P surrounding and extending upwardly from a perimeter edge of low-elevation floor 21 F as suggested in FIGS. 4 and 17 . Right-side bathwater reservoir 22 is defined by a low-elevation floor 22 F and an endless side panel 22 P surrounding and extending upwardly from a perimeter edge of low-elevation floor 22 F as suggested in FIGS. 4 and 17 .

Child-receiving cradle 20 is configured to provide an elevated bathwater channel 20 C in which a child can be retained during bath time between left-side and right-side bathwater reservoirs 21 , 22 as shown, for example, in FIG. 1 . Side bolsters 201 , 202 are laterally spaced apart from one another and cooperate to form side walls of the elevated bathwater channel and seat 204 and backrest 205 of child-support surface 203 cooperate to form a floor of the elevated bathwater channel 20 C.

Side bolsters 201 , 202 are contoured so as to be optimized ergonomically to receive both small-sized and larger-sized infants on the child-support surface 203 provided between side bolsters 201 , 202 as suggested in FIG. 1 . As suggested in FIGS. 1, 4, 17, and 18 , left-side bolster 201 has a rounded and ergonomically contoured convex exterior surface facing toward an opposing similar rounded and ergonomically contoured convex exterior surface of right-side bolster 202 . First side bolster 201 separates child-support surface 203 from left-side bathwater reservoir 21 . Second side bolster 202 separates child-support surface 203 from right-side bathwater reservoir 22 . In illustrative embodiments, the lowest portion 203 L of child-support surface 203 is elevated above low-elevation floor 21 F of left-side bathwater reservoir 21 and above low-elevation floor 22 F of right-side bathwater reservoir 22 as suggested in FIG. 4 .

Left-side bolster 201 includes a convex exterior surface 201 E arranged to face toward the child-support surface 203 as shown in FIG. 17 . Right-side bolster 202 includes a convex exterior surface 202 E arranged to face toward the child-support surface 203 and the convex exterior surface 201 E of the left-side bolster 201 and cooperate therewith to form an elevated bathwater channel 20 C located between the left-side and right-side bathwater reservoirs 21 , 22 .

Child-support surface 203 includes a forwardly sloping inclined seat 204 extending from the foot end 12 F of central base 12 to a midpoint of the first and second side bolsters 21 , 22 and a rearwardly sloping inclined backrest 205 extending from the forwardly sloping inclined seat 204 to the head end 12 H of central base 12 as suggested in FIGS. 4 and 17 . The rearwardly sloping inclined backrest 205 cooperates with the forwardly sloping inclined seat 204 to define the floor of the elevated bathwater channel 20 C.

Child-support surface 203 includes a left concave curved perimeter edge 203 L along a left side thereof and a right concave curved perimeter edge 203 R along a right side thereof as suggested in FIG. 17 . The convex exterior surface 201 E of the left-side bolster 201 includes a convex curved perimeter edge arranged to mate with and extend along the left concave curved perimeter edge 203 L of the child-support surface 203 . The convex exterior surface 202 of the right-side bolster 202 includes a convex curved perimeter edge arranged to mate with and extend along the right concave curved perimeter edge 203 R of the child-support surface 203 .

Juvenile tub 10 also includes a pliable bathmat 13 as shown, for example, in FIGS. 4 and 17 . Bathmat 13 includes, in series, a foot portion 131 mating with foldable footrest 14 , a seat portion 132 mating with forwardly sloping inclined seat 204 of central base 12 , a back portion 133 mating with rearwardly sloping inclined backrest 205 , and a head portion 134 mating with foldable headrest 16 . Bathmat 13 remains in place on tub 10 , whether footrest 12 and headrest 16 are in their expanded-use or collapsed-storage positions in illustrative embodiments of the present disclosure.

As suggested in FIGS. 4 and 5 , releasable footrest lock 15 is configured to be coupled to a footrest lock mount 115 formed in foot end 12 F of central base 12 . Footrest lock 15 is mounted as suggested in FIG. 5 for pivotable movement about a footrest-lock axis 15 A at the option of a caregiver to lock and unlock footrest 14 to control pivotable movement of footrest 14 about footrest axis 14 A between an expanded-use position shown in FIG. 1 and a collapsed-storage position shown in FIG. 3 .

Releasable footrest lock 15 includes a latch-release handle 151 , a latch 152 , a latch-biasing spring 153 , and a pivot axle 154 arranged to extend along footrest-lock axis 15 A as shown, for example, in FIG. 6 . Footrest lock 15 is a monolithic element made of an elastic plastics material in an illustrative embodiment to provide elasticity to spring 153 . Latch-biasing spring 153 is sized and shaped to engage a flange 207 coupled to the underside of child-support surface 203 as suggested in FIG. 10 and deform elastically to provide spring means for yieldably biasing latch 152 to mate with a latch retainer 452 included in footrest 14 so that footrest 14 is retained in the expanded-use position automatically whenever a caregiver moves the footrest 14 about footrest pivot axis 14 A in counterclockwise direction 101 to assume the expanded-use position shown in FIG. 1 .

Latch-biasing spring 153 is defined by a sheet made of the elastic plastics material. The sheet is formed to have a generally V-shaped cross-section and to include a proximal flat panel 153 A, a distal flat panel 153 C, and a curved bight panel 153 B arranged to interconnect panels 153 A, 153 C as suggested in FIG. 6 . Proximal flat panel 153 A is anchored to a body comprising latch 152 and latch-release handle 151 as shown, for example, in FIG. 6 . Distal flat panel 153 C is formed to include a free end of spring 153 as shown, for example, in FIG. 6 .

Latch-release handle 151 is coupled to latch 152 to pivot therewith as suggested in FIGS. 10, 12, and 14 . Latch-release handle 151 is configured to provide means for pivoting latch 152 about footrest-lock pivot axis 15 A in a counterclockwise direction relative to central base 12 to disengage the latch retainer formed in the footrest lock receiver of foldable footrest 14 to be pivoted by a caregiver about footrest axis 14 from the expanded-use position to the collapsed storage position to load latch-biasing spring 153 .

As suggested in FIG. 6 , latch 152 of footrest lock 15 includes a cantilevered hook support 152 S and a hook 152 H coupled to a free end of hook support 152 S. Hook 152 H is formed to include: (1) two side-by-side, spaced-apart, convex, exterior, cam-follower surfaces 152 S 1 , 152 S 2 ; (2) oppositely facing hook-retainer surfaces 152 R 1 , 152 R 2 ; and (3) tips 152 T 1 , 152 T 2 located between the cam-follower surfaces and the hook-retainer surfaces as shown, for example, in FIGS. 6 and 9A . In illustrative embodiments, a rib-receiving gap 152 G is provided between these cam-follower surfaces 152 S 1 , 152 S 2 as suggested further in FIG. 9 to receive a rib 142 coupled to an underside of a footrest shell 140 included in footrest 14 when footrest 14 is moved to assume the expanded-use position shown in FIG. 1 .

Footrest lock mount 115 is formed in central base 12 of juvenile tub 10 as shown, for example, in FIGS. 4 and 5 . Footrest lock mount 115 is coupled to the underside of forwardly sloping inclined seat 204 and a laterally extending lip 204 L associated with forwardly sloping inclined seat 204 and provided at foot end 12 F of central base 12 . Footrest lock mount 115 includes a forwardly extending first axle-mount flange 301 , a laterally spaced-apart forwardly extending second axle-mount flange 302 , and a rigidifying structure 300 arranged to lie between and interconnect first and second axle-mount flanges 301 , 302 as shown, for example, in FIG. 5 . Each of axle-mount flanges 301 , 302 is formed to include an axle-receiving aperture 301 A or 302 A and companion aperture lead-in channel 301 C or 302 C for conducting an axle 154 A or 154 B to its companion aperture 301 A or 302 A during installation of footrest lock 15 on footrest lock mount 115 . It is within the scope of this disclosure to provide headrest lock mount 117 with a similar structure.

Releasable footrest lock 15 mounted on central base 12 is configured to mate with a footrest lock receiver 141 included in footrest 14 as suggested diagrammatically in FIG. 4 and illustratively in FIGS. 7 and 8 automatically whenever a caregiver pivots footrest 14 about footrest axis 14 A in counterclockwise direction 101 from the collapsed-storage position shown in FIG. 3 to the expanded-use position shown in FIG. 1 . Footrest 14 is locked temporarily in the expanded-use position whenever latch hook 152 H of footrest lock 15 mates with latch retainer 452 of footrest lock receiver 141 of footrest 14 as shown, for example, in FIGS. 15 and 16 . To unlock footrest 14 so that it is free to be pivoted about footrest axis 14 A in clockwise direction 102 to the collapsed-storage position overlying central base 12 as shown in FIG. 3 , a caregiver need only reach under footrest 14 and grip a latch-release handle 151 included in footrest lock 15 and then apply a clockwise torque to rotate footrest lock 15 to move latch 152 (so as to compress the latch-biasing spring 153 ) to disengage hook 152 H of a latch 152 included in footrest lock 15 from the latch retainer 452 in footrest lock receiver 141 formed in footrest 14 .

Footrest lock receiver 141 is included in footrest 14 as shown, for example, in FIGS. 7, 8, and 8A . Footrest 14 illustratively includes a footrest shell 140 configured to receive the feet (not shown) of a juvenile seated in central base 12 and shell-pivot axles 140 A, 140 B arranged to extend along footrest axis 14 A and mate with companion axle receivers 140 AR, 140 BR formed in central base 12 as suggested in FIGS. 4 and 7 . Footrest shell 140 can be formed to have any suitable size and shape in accordance with the present disclosure.

Footrest lock receiver 141 is coupled to the underside of footrest shell 140 and provided at a rear lip 140 L of footrest shell 140 as shown, for example, in FIGS. 7, 8 , and 8 A. Footrest lock receiver 141 includes a rearwardly extending first rigidifier plate 401 , a laterally spaced-apart second rigidifier plate 402 , a rigidified latch cam 400 arranged to lie between and interconnect first and second rigidifier plates 401 , 402 , and a latch retainer 452 as shown best in FIG. 8 . Footrest lock receiver 141 is formed to include a hook-retainer space 141 S bounded in part by plates 401 , 402 and latch retainer 452 as suggested in FIGS. 8 and 8A . Rigidified latch cam 400 includes a convex curved exterior hook-camming surface 400 S as shown best in FIGS. 8A and 12A .

Use of latch cam 400 in footrest lock receiver 141 to cam spring-biased latch 152 in footrest lock 15 and subsequent engagement of latch 152 and latch retainer 452 also included in footrest lock receiver 141 is shown, for example, in FIGS. 9-16A . A close-up view of a hook 152 H included in latch 152 as it moves relative to footrest 14 is provided in each of FIGS. 10A, 12A, 14A, and 16A .

Footrest 14 is shown in its collapsed-storage position in FIGS. 9, 9A, 10 , and 10 A. At this stage, latch 152 of headrest lock 15 is separated from each of latch cam 400 and latch retainer 452 of footrest lock receiver 141 of footrest 14 as shown in FIG. 10 . An illustrative curvature of cam-follower surface 152 H 1 and an illustrative flat surface of cam-retainer surface 152 R 1 is shown in FIG. 10A .

Pivotable movement of footrest 14 about footrest axis 14 in counterclockwise direction 101 toward an expanded-use position is suggested in FIG. 11 . The convex exterior cam-follower surfaces 152 H 1 , 152 H 2 of hook 152 H included in latch 152 are shown in FIG. 11A just before they mate in camming engagement with curved exterior surface 400 S included in latch cam 400 of footrest lock receiver 141 of footrest 14 . Once matching camming engagement begins, spring 153 will be loaded against flange 207 as footrest 14 continues to move toward the expanded-use position.

The footrest 14 is shown in a position in FIG. 13 that is occupied just before footrest 14 reaches the expanded-use position shown in FIG. 15 . A tip 152 T of the hook 152 H of the latch 152 engages an exterior surface of latch cam 400 at this stage just before snap-engagement of the hook 152 H of the spring-biased latch 152 to place the hook-retainer surfaces 152 R 1 , 152 R 2 of latch 152 in mating engagement with latch retainer 452 to retain footrest 14 in the expanded-use position as shown, for example, in FIGS. 15, 16, and 16A .

As suggested in FIGS. 4 and 21 , releasable headrest lock 17 is configured to be coupled to a headrest lock mount 117 formed in head end 12 H of central base 12 . Headrest lock 17 is mounted as suggested in FIG. 21 for pivotable movement about a headrest-lock axis 17 A at the option of a caregiver to lock and unlock headrest 16 to control pivotable movement of headrest 16 about headrest axis 16 A between an expanded-use position shown in FIG. 1 and a collapsed-storage position shown in FIG. 3 .

Releasable headrest lock 17 includes a latch-release handle 171 , a latch 172 , a latch-biasing spring 173 , and a pivot axle 174 arranged to extend along headrest-lock axis 17 A as shown, for example, in FIG. 22 . Headrest lock 17 is a monolithic element made of an elastic plastics material in an illustrative embodiment. Latch-biasing spring 173 is sized and shaped to engage a flange 507 coupled to the underside of child-support surface 203 as suggested in FIG. 21 and to deform elastically to provide spring means for yieldably biasing latch 172 to mate with a latch retainer 652 included in headrest 16 so that headrest 16 is retained in the expanded-use position automatically whenever a caregiver moves the headrest 16 about headrest pivot axis 16 A in clockwise direction 102 to assume the expanded-use position.

As suggested in FIG. 22 , latch 172 of headrest lock 17 includes a hook support 172 S and a hook 172 H coupled to a free end of hook support 172 S. Hook 172 H is formed to include: (1) two side-by-side, spaced-apart, convex, exterior, cam-follower surfaces 172 S 1 , 172 S 2 ; (2) oppositely facing hook-retainer surfaces 172 R 1 , 172 R 2 ; and (3) tips 172 T 1 , 172 T 2 located between the cam-follower surfaces and the hook-retainer surfaces, as shown, for example, in FIG. 22 . In illustrative embodiments, a rib-receiving gap 172 G is provided between these cam-follower surfaces 172 S 1 , 172 S 2 as suggested in FIGS. 21 and 22 . Such a rib-receiving gap 172 G is sized to receive a rib 162 shown, for example, in FIGS. 3 and 9 coupled to an underside of a headrest shell 160 included in headrest 16 when headrest 16 is moved to assume the expanded-use position shown in FIG. 1 .

Headrest lock mount 117 is formed in central base 12 of juvenile tub 10 as shown, for example, in FIG. 21 . Headrest lock mount 117 is coupled to the underside of the rearwardly sloping inclined backrest 205 and a laterally extending lip 205 L associated with rearwardly sloping inclined backrest 205 and provided at head end 12 H of central base 12 . Headrest lock mount 117 includes a rearwardly extending first axle-mount flange 501 , a laterally spaced-apart rearwardly extending second axle-mount flange 502 , and a rigidifying structure 500 arranged to lie between and interconnect first and second axle-mount flanges 501 , 502 as shown, for example, in FIG. 21 . Each of axle-mount flanges 501 , 502 is formed to have the axle-receiving features provided in flanges 301 , 302 .

Releasable headrest lock 17 mounted on central base 12 is configured to mate with a headrest lock receiver 161 included in headrest 16 as suggested diagrammatically in FIG. 4 and illustratively in FIGS. 23 and 24 automatically whenever a caregiver pivots headrest 16 about headrest pivot axis 16 A in clockwise direction 102 from the collapsed-storage position shown in FIG. 3 to the expanded-use position shown in FIG. 1 . Headrest 16 is locked temporarily in the expanded use position whenever headrest lock 17 mates with headrest lock receiver 161 of headrest 17 . To unlock headrest 16 so that it is free to be pivoted to the collapsed-storage position overlying central base 12 as shown in FIG. 3 , a caregiver need only reach under headrest 16 and grip a latch-release handle 171 included in headrest lock 17 and then apply a torque to rotate headrest lock 17 to disengage hook 172 H of latch 172 included in headrest lock 17 from headrest lock receiver 161 formed in headrest 16 .

Headrest lock receiver 161 is included in headrest 16 as shown, for example, in FIGS. 23, 24, and 24A . Headrest 16 illustratively includes a headrest shell 160 configured to receive the head (not shown) of a juvenile seated in central base 12 and shell-pivot axles 160 A, 160 B arranged to extend along headrest axis 16 A and mate with companion axle receivers 160 AR, 160 BR formed in central base 12 as suggested in FIGS. 4 and 23 . Headrest shell 160 can be formed to have any suitable size and shape in accordance with the present disclosure.

Headrest lock receiver 161 is coupled to the underside of headrest shell 160 and provided on a front lip 160 L of headrest shell 160 as shown, for example, in FIGS. 23, 24, and 24A . Headrest lock receiver 161 includes a forwardly extending first rigidifier plate 601 , a laterally spaced-apart second rigidifier plate 602 , a rigidified latch cam 600 arranged to lie between and interconnect first and second rigidifier plates 601 , 602 , and a latch retainer 652 as shown best in FIG. 24 . Rigidified latch cam 600 includes a convex curved exterior hook-camming surface 600 S. Latch 172 associated with headrest 16 operates in a manner similar to the latch 152 that is associated with footrest 14 to lock headrest 16 in the expanded-use position shown in FIG. 1 in response to pivoting movement of headrest 16 from the collapsed-storage position shown in FIG. 3 about headrest pivot axis 16 A in clockwise direction 102 .

Ergonomically contoured first and second side bolsters 201 , 202 cooperate to position children of varying sizes on concave child-support surfaces 203 while allowing collapsible pivotable movement of each of footrest 14 and headrest 16 between the expanded-use positions shown in FIG. 1 and the collapsed-storage positions shown in FIG. 3 . Each of footrest lock 15 and headrest lock 17 is configured to include a one-handed release mechanism to facilitate fold-up of bathtub 10 to a compact form for storage.