Machine element or mechanism – Gearing – Yieldability in gear trains
Patent
1997-12-19
1999-06-22
Ta, Khoi Q.
Machine element or mechanism
Gearing
Yieldability in gear trains
74425, 464160, F16H 5700
Patent
active
059139374
ABSTRACT:
A worm gear reducer includes a worm fixedly mounted on a drive shaft rotatably mounted in a housing, a driven shaft rotatably mounted in the housing and including a first end portion formed with an outer thread, a mediate portion with a worm wheel mounted thereon meshing with the worm, and a second end portion. A torsion damping device includes two friction washers each mounted on the driven shaft and each urged on one side of the worm wheel, two abutting rings each securely mounted on the driven shaft and each urged on a corresponding one of the two friction washers, a biasing member mounted on the first end portion of the driven shaft and urged on one of the abutting rings, a sleeve mounted on the first end portion of the driven shaft and urged on the biasing member, and a compression nut engaged on the outer thread of the driven shaft and urged on the sleeve.
REFERENCES:
patent: 1162034 (1915-11-01), Catucci
patent: 2317490 (1943-04-01), Simpson
patent: 2341968 (1944-02-01), West
patent: 4367660 (1983-01-01), Becker et al.
patent: 4663981 (1987-05-01), Louradour et al.
patent: 4813303 (1989-03-01), Beezer et al.
patent: 5834662 (1998-11-01), Stoll et al.
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