Joint and arm portions of spring biased hinge

FIG. 1 is a top plan view of joint and arm portions of a spring biased hinge showing our new design, with the two pivotally connected arms of the hinge extending substantially parallel, and with typical arm portions that comprise no part of the design being depicted by broken lines;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a right end elevational view thereof;

FIG. 4 is a left end elevational view thereof; and,

FIG. 5 is a front elevational view thereof.

The surface(s) or portion(s) of the article not shown in the drawing or described in the specification form(s) no part of the claimed design.