Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Fluid pump and motor in one of plural paths to or from...
Patent
1990-06-01
1992-02-11
Braun, Leslie A.
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Fluid pump and motor in one of plural paths to or from...
188 727, 60435, 74503, 475270, 475900, F16H 4704
Patent
active
050872273
ABSTRACT:
A hydrostatic transaxle is disclosed of the type having a central manifold (13) and right and left motor axle assemblies (15, 17). Each motor axle assembly includes a fluid motor (35) and a speed reduction gear set (51). The manifold defines a pair of aligned openings (81R, 81L) and disposed therein is a pair of elongated brake actuation members (83R, 83L), each member being axially moveable in its opening away from a central reference plane (RP). A cam means (95) defines right and left cam surfaces (107R, 107L) engaging the brake actuation members. Movement of the cam means forces the actuation members axially outward, until each engages friction pad (109), providing braking of a reaction plate (115) between the friction pad and a back up plate (119). The disclosed braking arrangement is simple and inexpensive, and achieves braking upstream of the reduction gear set, thus requiring less braking torque than would be required in the case of a conventional wheel brake. Also disclosed is an embodiment (FIG. 7) in which the brake arrangements in the right and left motor axle assemblies may be actuated independently of each other.
REFERENCES:
patent: 1645975 (1927-10-01), Tape
patent: 1843490 (1932-02-01), Spase
patent: 2953040 (1960-09-01), Christenson et al.
patent: 3059731 (1962-10-01), Gancel et al.
patent: 3155047 (1964-11-01), Keel
patent: 3765183 (1973-10-01), Baurle
patent: 3877537 (1975-04-01), Ohms et al.
patent: 3905251 (1975-09-01), Greene
patent: 4696164 (1987-09-01), Giere
patent: 4845949 (1989-07-01), Shivvers et al.
Gafvert Sven B.
Giere David W.
Braun Leslie A.
Eaton Corporation
Kasper L. J.
Levi Benjamin
LandOfFree
Hydrostatic transaxle and brake arrangement therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydrostatic transaxle and brake arrangement therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrostatic transaxle and brake arrangement therefor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-779225