Low cost compact design integral brake

Details Low cost compact design integral brake Low cost compact design integral brake

1999-06-03

2000-10-17

Denion, Thomas

Rotary expansible chamber devices

Working member has planetary or planetating movement

Plural working members or chambers

418181, F03C 200

Patent

active

06132194&

ABSTRACT:
An integral brake assembly for a gerotor motor of the type including valving (41) disposed forwardly of the gerotor gear set (15). Orbital and rotational movement of the gerotor star member (31) is transmitted to an output shaft (43) by a main drive shaft (51), which includes a rearwardly extending brake portion (107). The motor includes an endcap assembly (21) defining a brake chamber (73) into which the brake portion (107) extends. A cylindrical brake member (91) is disposed in the brake chamber (73), and includes a circular surface (109) for frictional engagement with a lock piston (75). The brake member (91) also includes a forward generally annular surface (115) for frictional engagement with either the gerotor gear set (15) or an adjacent wear plate (89). The invention at least reduces the need for expensive friction discs in order to achieve a desired level of brake torque, and also utilizes inherent friction in various brake parts for some of the required brake torque.

REFERENCES:
patent: 3087436 (1963-04-01), Dettlof et al.
patent: 3616882 (1971-11-01), White
patent: 3960470 (1976-06-01), Kinder
patent: 4493404 (1985-01-01), Wenker
patent: 4597476 (1986-07-01), Wenker
patent: 4613292 (1986-09-01), Bernstrom et al.
patent: 4981423 (1991-01-01), Bissonnette
patent: 5144324 (1992-09-01), Spindeldreher
patent: 6602835 (2000-05-01), Acharya et al.

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