Variable mechanical advantage torque arm

Details Variable mechanical advantage torque arm Variable mechanical advantage torque arm

1982-10-22

1985-03-05

Herrmann, Allan D.

Machine element or mechanism

Gearing

Interchangeably locked

74470, 74473R, 74516, 74522, 192 53E, 192995, G05G 918, G05G 704, F16D 2306

Patent

active

045023468

ABSTRACT:
A variable mechanical advantage/variable effective length torque arm assembly (100) for a synchronized transmission is provided. The torque arm assembly comprises a substantially rigid body (102) fixedly mounted to a shift shaft (36) at one end (104) thereof for axial and rotational movement therewith. The body is provided with an axially extending elongated slot (106) in which a pivot pin (124) is received for pivotably attaching an axially movable control rod (22) to the body of the torque arm assembly. A biasing spring (134) bias the pivot pin to a first end of the slot closer to the axis of the shift shaft to define a first effective length (138) of the torque arm assembly which biasing force may be overcome by a sufficient resistance to rotation of the shift shaft (36) allowing the pivot pin to move away from the axis of the shift shaft to define a second effective length (140) of the torque arm assembly greater than the first effective length.

REFERENCES:
patent: 763548 (1904-06-01), Ferguson
patent: 787418 (1905-04-01), Westman
patent: 1099464 (1914-06-01), Olson
patent: 1138718 (1915-05-01), Adams
patent: 2040594 (1936-05-01), Bixby
patent: 2385734 (1945-09-01), Silva et al.
patent: 2414832 (1947-01-01), Orr
patent: 2900970 (1959-08-01), Sims et al.
patent: 3221851 (1965-12-01), Vandervoort
patent: 3857299 (1974-12-01), Morrison
patent: 4104929 (1978-08-01), Kessmar
patent: 4269282 (1981-05-01), Meacock et al.
patent: 4275612 (1981-06-01), Silvester

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