Clutch mechanism

Details Clutch mechanism Clutch mechanism

1987-06-30

1989-01-10

Wright, Dirk

Machine element or mechanism

Gearing

Adjustable

74396, 74405, 192 20, F16H 3506, F16H 5700, F16D 2104

Patent

active

047964790

ABSTRACT:
A clutch mechanism for engaging and disengaging the thread (14) of a worm (13) from the teeth (17) of a worm gear (16). The worm (13) is mounted in a carrier block (47), disposed in a cavity (39) of a housing (12), from translatory movement towards and away from the worm gear. Springs (52) normally bias the worm away from engagement with the worm gear, while air pressure (34) is used to force the worm towards and into engagement with the worm gear. The cavity (39) and block (47) are tapered to prevent binding during movement of the block, and a spur gear drive is used to drive the worm (13) by motor (22), with the spur gears (18) and (19) being in mesh at all times during movement of the block (47).

REFERENCES:
patent: 512668 (1894-01-01), Smith
patent: 1262235 (1918-04-01), Murray
patent: 1327129 (1920-01-01), Wolff
patent: 1338377 (1920-04-01), Kopf
patent: 1591316 (1926-07-01), Iglauer
patent: 2771169 (1956-11-01), Wahlstrom
patent: 2989874 (1961-06-01), Johnson
patent: 3139844 (1964-07-01), Landers
patent: 3705518 (1972-12-01), Ernst et al.
patent: 3858452 (1975-01-01), Gatland et al.
patent: 4683770 (1987-08-01), Nettmann

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