Sectional door cable tensioner

Details Sectional door cable tensioner Sectional door cable tensioner

2005-10-11

2009-12-22

Purol, David (Department: 3634)

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

With mounting or supporting means

C049S322000

Reexamination Certificate

active

07635017

ABSTRACT:
A cable tensioner (20) for a sectional overhead door (D) having a motor-driven counterbalance system (30) including, a spring-loaded axle (31), cable drums (24) carried by the axle, cables (C) attached to and interconnecting the cable drums and the door and forming and releasing cable wraps (29) on the cable drums upon raising and lowering of the door, the cable tensioner having, a tension spring (31) adapted to be mounted on the sectional door having a first end (34) and a second end (35), the first end being adapted to engage the door and the second end being adapted to slidingly engage the cable, wherein the tension spring urges the second end to take up any slack in the cable.

REFERENCES:
patent: 3160200 (1964-12-01), McKee et al
patent: 3412780 (1968-11-01), Moler
patent: 4736826 (1988-04-01), White et al.
patent: 4871007 (1989-10-01), Abolins
patent: 4892262 (1990-01-01), Hurst
patent: 5280879 (1994-01-01), Kreuter
patent: 6145570 (2000-11-01), Mullet et al.
patent: 6164014 (2000-12-01), McDowell et al.
patent: 6189266 (2001-02-01), Mihalcheon
patent: 6263947 (2001-07-01), Mullet
patent: 2 805 305 (2001-08-01), None
patent: WO 96/38644 (1996-12-01), None

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