Fire escape – ladder – or scaffold – Torso harness – Strand-engaging – with descent retarder
Reexamination Certificate
2006-03-13
2010-02-09
Chin-Shue, Alvin C (Department: 3634)
Fire escape, ladder, or scaffold
Torso harness
Strand-engaging, with descent retarder
C254S391000
Reexamination Certificate
active
07658264
ABSTRACT:
A combination descender, pulley, and force limiting rope brake for rope rescue has a supporting plate having a one-way pulley sheave rotatably mounted thereto for free-wheeling rotation of the sheave in only a first rotational direction. A fixed brake member is mounted rigidly to the supporting plate. A movable brake member is pivotally mounted to the supporting plate. A pinching opening is defined by the gap. The rope passes in a first direction through the gap when the sheave is free-wheeling in the first rotational direction. The movable brake member translates relative to the fixed brake member in cooperation with rotation of the sheave. Rotation-under-load of the sheave in an opposite rotational direction urges translation of the movable brake member towards the fixed brake member from an open position, wherein the pinching opening is open sufficiently to allow the rope to freely pass therethrough, to a closed position wherein the movable brake member closes the pinching opening so as to frictionally pinch the rope at a preset minimum opening of the pinching opening.
REFERENCES:
patent: 1636273 (1927-07-01), Baker
patent: 3756565 (1973-09-01), Sakai
patent: 3759346 (1973-09-01), Brda
patent: 3807696 (1974-04-01), Brda
patent: 4934660 (1990-06-01), Nelson
patent: 5168958 (1992-12-01), Wullimann
patent: 5305852 (1994-04-01), Klokseth
patent: 5348116 (1994-09-01), Pickering
patent: 5348117 (1994-09-01), Pickering
patent: 5360083 (1994-11-01), Hede
patent: 5540307 (1996-07-01), Pickering
patent: 5577576 (1996-11-01), Petzl et al.
patent: 5615865 (1997-04-01), Fountain
patent: 5664640 (1997-09-01), Smith
patent: 5701972 (1997-12-01), Bloder
patent: 5799753 (1998-09-01), Peltier
patent: 5927438 (1999-07-01), Ostrobrod
patent: 6189867 (2001-02-01), O'Rourke et al.
patent: 6742770 (2004-06-01), Vassioukevitch
Chin-Shue Alvin C
Edwards Anthony C.
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