Retractable lifeline safety device

Details Retractable lifeline safety device Retractable lifeline safety device

1990-10-26

1993-02-16

Focarino, Margaret A.

Brakes

Operators

Speed-responsive

188 651, 182232, F16D 5900

Patent

active

051862891

ABSTRACT:
A retractable lifeline safety device usable by workers performing tasks at great heights above the ground. The mechanical components of the safety device are contained within a sealed housing that is filled with a viscous fluid. The sealed housing prevents the introduction of dirt, moisture and other foreign matter into the mechanical mechanism of the safety device, reducing the likelihood that those components may be fouled by dirt and corrosion, which in turn could greatly reduce the effectiveness of the safety device. The safety device is attached to the structure on which the worker is performing the task, and a lifeline such as a cable is withdrawn from the housing thereof, the end of which is attached to a belt or harness worn by the worker. The cable may be easily drawn out of the housing in response to the worker moving about normally in the appropriate work space, and the cable is automatically drawn back into the housing of the safety device as the worker draws closer thereto. However, should the worker fall, a brake within the safety device is automatically engaged by a centrifugal clutch, stopping the worker's descent.

REFERENCES:
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patent: 2896912 (1959-07-01), Faugier et al.
patent: 2990131 (1961-06-01), Carlsson
patent: 3760910 (1973-09-01), Koshihara
patent: 4088201 (1978-05-01), MacFarlane
patent: 4480716 (1984-11-01), Soubry et al.
patent: 4511123 (1985-04-01), Ostrobrod
patent: 4523664 (1985-06-01), Soubry et al.
patent: 4688659 (1987-08-01), Sheu
patent: 4877110 (1989-10-01), Wolner
BH/SALA Model SB 57 Fall Arrest Safety Block Servicing Manual.
Drawing No. 720-00-00 titled Safety Block SB 57.
BH/SALA Model SB 150 Fall Arrest Safety Block Servicing Manual.
DBI/SALA sales brochure showing, on page SB-2, model SB 57 & model SB150 Safety Blocks.

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