Fire escape – ladder – or scaffold – Torso harness – Strand-engaging – with descent retarder
Patent
1985-09-20
1986-12-30
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Torso harness
Strand-engaging, with descent retarder
188 652, A62B 116, A62B 3500
Patent
active
046322183
ABSTRACT:
A sliding descent device for controlling the movement of a user sliding down a rope includes a generally cylindrical housing containing a tubular channel member defining an axial rope path extending through the housing. The device can be installed on a medial segment of a rope without threading an end of the rope through the housing by opening a closure structure and admitting the rope to the axial rope path through a lateral rope entry path. The closure structure is moved to a closed position to capture the rope in the axial path. A brake member is mounted for movement relative to the housing into the axial rope path to apply a braking force to the rope. A first control member supports the weight of the user and moves the brake member to increase the braking force to halt the device. A second control member is manually operated to move the brake member and reduce the braking force for a sliding descent. The mechanical advantage of the first control member is varied by selecting one or more attachment positions so that the device may be used by one or more persons of various weights.
REFERENCES:
patent: 785202 (1905-03-01), Dahlquist
patent: 2561514 (1951-07-01), Houseman
patent: 3179994 (1965-04-01), Meyer et al.
patent: 3437178 (1969-04-01), Postlethwait
patent: 3852943 (1974-12-01), Healy
patent: 3876036 (1975-04-01), Sweet
patent: 4385679 (1983-05-01), Mulcahy
patent: 4474262 (1984-10-01), Himmelrich
patent: 4546851 (1985-10-01), Brennan
Hannan Randy R.
Mulcahy Timothy E.
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