Inventor

Norman R. Westfall

Inventor

Rochester, NY, US

Overview

21→

Patents

1981–1996

Patent span

Fixed constructions

Primary field (CPC E)

Patents· 21 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

E05Dprimary

E05DHinges or suspension devices for doors, windows or wings38%

E05YIndexing scheme associated with subclasses e05d and e05f, relating to construction elements, electric control, power supply, power signal or transmission, user interfaces, mounting or coupling, details, accessories, auxiliary operations not otherwise provided for, application thereof35%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%

E06BFixed or movable closures for openings in buildings, vehicles, fences or like enclosures in general, e.g. doors, windows, blinds, gates4%

B29CShaping or joining of plastics2%

B29DProducing particular articles from plastics or from substances in a plastic state2%

B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts2%

B29LIndexing scheme associated with subclass b29c, relating to particular articles2%

F16LPipes2%

G02BOptical elements, systems or apparatus2%

PatentTitleYear

5,572,828'Pin lock for tilt sash lock shoe'1996 5,551,189'Hurricane window brace'1996 5,530,991'Block and tackle window balance'1996 5,463,793'Sash shoe system for curl spring window balance'1995 5,353,548'Curl spring shoe based window balance system'1994 5,231,795'Lock shoe system for heavy sash'1993 5,207,025'Automatic friction shoe'1993 5,199,219'Window jamb liner'1993 5,189,838'Tilt sash lock shoe system'1993 5,159,794'Jamb liner slot cover'1992 5,152,032'Window sash balance with tension and torsion spring'1992 5,119,592'Balance system for laterally biased sash guides'1992 4,941,285'Lift-off shoe system for tilt window'1990 4,885,871'Audibly locking shoe system for take-out window'1989 4,837,976'Window balance spring cover friction system'1989 4,811,455'Window spring anchor'1989 4,800,680'Cord guide system for sash balance'1989 4,799,333'Lock shoe system for take-out window'1989 4,779,380'Spring cover friction system for sash balance'1988 4,701,288'Method of making articles of dissimilar polymer compositions'1987 4,275,767'Fluid resistor'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981Patents assigned to SYBRON CORP (1)· patent assignee history

1981–1996Based in Rochester, NY, US· patent location history

1987Patents assigned to BAUSCH & LOMB (1)· patent assignee history

1987Based in Penfield, NY, US· patent location history

1988–1996Patents assigned to CALDWELL MFG CO (19)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CALDWELL MFG CO	19	1988–1996
BAUSCH & LOMB	1	1987
SYBRON CORP	1	1981

Locations

Location	Patents	Span
Rochester, New York, US	20	1981–1996
Penfield, New York, US	1	1987