Roller unlocking sprags

Details Roller unlocking sprags Roller unlocking sprags

1996-02-12

1999-10-19

Oberleitner, Robert J.

Brakes

Wheel

One-way brakes

188 8284, 192 451, F16D 4107, B60L 500

Patent

active

059672676

ABSTRACT:
A roller type sprag member consisting of three main elements, an outer roller half section, an inner roller half section, and an assembly-location pin. The sprag locks using roller locking techniques in a manner well known in the case of a three-dimensional (3-D) locking sprag. It unlocks, however, using a roll technique in which the inner and outer roller halves rotate in mutually opposite directions, one clockwise and the other counterclockwise. In the process of rotation, the roller is foreshortened between the distance across the sprag contact surfaces, whereupon it loses its ability to act as a locking sprag and releases.

REFERENCES:
patent: 3119481 (1964-01-01), Fuchs
patent: 3865219 (1975-02-01), Dossier
patent: 5482144 (1996-01-01), Vranish

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