Overhead door closer with slide arm assembly

Details Overhead door closer with slide arm assembly Overhead door closer with slide arm assembly

2006-04-11

2006-04-11

Glessner, Brian E. (Department: 3676)

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

Closers

Spring and gear

C016S058000, C016S062000, C016S064000, C074S462000, C074S464000

Reexamination Certificate

active

07024725

ABSTRACT:
This invention relates to an overhead door closer with slide arm assembly having a toothed pinion that is eccentrically supported and presents a circular rolling curve, which pinion meshes with a toothed rack arranged at a piston. The invention concentrates on a particular embodiment of the rolling curve and of the teeth of the toothed rack in adaptation to a toothing of the pinion. Furthermore, the invention concentrates on an improved embodiment of the delayed closing operation in order to achieve an optimized movement pattern of the piston within the housing of the overhead door closer with slide arm assembly.

REFERENCES:
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patent: 5943736 (1999-08-01), Kärkkäinen et al.
patent: 41 24 282 (1993-01-01), None
patent: 966.945 (1948-05-01), None
Boston Gear, Gear Catalog, pp. 136-139.
Guide to World Screw Threads, p. 212, Figure 12.

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