Automatic anchoring system for window spring

Details Automatic anchoring system for window spring Automatic anchoring system for window spring

1989-10-17

1991-05-07

Seidel, Richard K.

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Sash balances

Spring

49445, E05D 1300, E05F 100

Patent

active

050125540

ABSTRACT:
A top clip (20) automatically anchors a window spring (15) at the upper end of a jamb liner spring cover (11) having a generally D-shaped cross section. The top clip has a body (21) that interlocks with the upper coils of spring (15) and has a rounded nose (26) that helps guide the body inside the upper end of spring cover (11). The top of body (21) has a flange (22) that overlaps the upper end of the spring cover, and the periphery of the flange has retainer tangs (25) that extend downward to overlap the outer surface of the spring cover. If a spring is accidentally snapped during assembly, top clip (20) and spring (15) are free to move above the upper end of spring cover (11) and can be returned to an anchored position, simply by pulling downward on the spring and the top clip.

REFERENCES:
patent: 2786230 (1957-03-01), Hettinger
patent: 3034170 (1962-05-01), Koebel
patent: 3077631 (1963-02-01), Erck
patent: 3332171 (1967-07-01), Beil
patent: 3432883 (1969-03-01), Erck
patent: 4190930 (1980-03-01), Prosser
patent: 4685175 (1987-08-01), Yonovich

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