Planetary gear transmission systems or components – Differential planetary gearing – Spur gear differential
Patent
1992-11-17
1994-05-10
Braun, Leslie A.
Planetary gear transmission systems or components
Differential planetary gearing
Spur gear differential
74462, F16H 132, F16H 5508
Patent
active
053103890
ABSTRACT:
A parallel-axis gear differential includes pairs of element gears (34) mounted within pockets (36) formed in a differential housing (10). Each element gear includes a first gear section (38) for meshing with one of two side gears (30 or 32), a second gear section (40) for meshing with the first gear section of its mating element gear, and a stem section (42 ) for interconnecting the first two gear sections. Associated with each pair of pockets are two passageways (44, 46) for providing respective paths for the flow of lubrication fluid between the exterior of the housing and the respective meshing gear sections (38, 40) of each pair of element gears (34). The profile of the teeth of the element gears is modified with a chamfer-like shape (58) at the intersection of the profile and the top lands of the teeth, the chamfer-like shape making an angle of 10.degree.-30.degree. with the top lands.
REFERENCES:
patent: 2269734 (1942-01-01), Powell
patent: 3706239 (1972-12-01), Myers
patent: 3738192 (1973-06-01), Belansky
patent: 4365524 (1982-12-01), Dissett et al.
patent: 4593679 (1986-06-01), Collins
patent: 4942781 (1990-07-01), Hori
patent: 5122101 (1992-06-01), Tseng
patent: 5163826 (1992-11-01), Cozens
Shigley, Mechanical Engineering Design, 3rd Edition, 1977, pp. 448-449.
Braun Leslie A.
Ta Khoi
Zexel-Gleason USA, Inc.
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