Formlock shoes with flats

Details Formlock shoes with flats Formlock shoes with flats

1996-06-21

1999-02-02

Ta, Khoi Q.

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

188134, B60K 4120

Patent

active

058652841

ABSTRACT:
A bi-directional back stopping clutch having improved output pins connecting between brake shoes and an output member. During driving, the output pins transfer torque to the output member. When a sufficient back driving force is applied to the output member, the output pin is skewed to move the brake shoes into forceful contact with a brake drum surface. The contact surfaces between the pins and the brake shoes are flat meeting surfaces, and the pins may be spaced apart by including at least one spring or a combination of springs and spacers. The inner surface of the input yoke and the output member openings are laser hardened. The output member and the input member may be provided with a dual keyed hub at both ends, with the hub formed by machining a bore through the part and cutting the keys by broaching.

REFERENCES:
patent: 1617745 (1927-02-01), Cousinard
patent: 3335831 (1967-08-01), Kalns
patent: 3414095 (1968-12-01), Kalns
patent: 3497044 (1970-02-01), Kalns
patent: 4245728 (1981-01-01), Murteza
patent: 4533400 (1985-08-01), Benedict
patent: 4591029 (1986-05-01), Da Foe
patent: 4601370 (1986-07-01), Papadopoulos
patent: 5007511 (1991-04-01), Ostrander
patent: 5065854 (1991-11-01), Serrano et al.
patent: 5104461 (1992-04-01), Ostrander
patent: 5123972 (1992-06-01), Ostrander

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