Brakes – Strand – Tortuous grip
Patent
1991-04-11
1992-09-08
Oberleitner, Robert J.
Brakes
Strand
Tortuous grip
182 72, 182193, A62B 114
Patent
active
051450364
ABSTRACT:
A new and improved descent retarding device having a main U shaped steel frame (7) allowing a short, light, design. There are five aluminum or steel cross bars (3) (4) (5) which act as friction retarders when the 7/16" rope (8) is attached. Two of the friction bars (4) are slotted on one end. This allows them to swing open when loading. The rope (8) slips through the space unoccupied by the open bars. The rope (8) is placed around the bars which are then pulled closed, contacting the friction bars (4) with the main frame (7). The device is now tight and ready to use. The unique combination of springs (9), handle bar (5) and adjustable self locking wing nuts (6) working in conjunction with each other make a safe, easy to use new concept in descenders. Using a handle instead of holding the rope on the descender increases balance and prevent burns. Two coil springs installed covering the main steel rod (7) at the base of the device compress and expand in response to pressure on the safety handle (5) with your hands. These reactions in the springs increase and decrease the pressure between the upper bars allowing various degrees of descent on the rope. In an emergency out of control situation these springs expand and automatically bring the user to a safe stop. By turning the adjustable wing nuts (6) up or down a fine tuning of the pressure on the friction bars can be controlled.
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Muratori Alfred
Oberleitner Robert J.
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