Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Control of differential planetary gearing
Patent
1990-07-18
1992-01-28
Wright, Dirk
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Control of differential planetary gearing
192 35, 192 58C, F16H 144
Patent
active
050839861
ABSTRACT:
To stably control clutch engagement torque of a multidisk friction plate clutch provided between two rotary members, without being directly subjected to the influence of friction plate wear or of fluctuations in friction coefficient between two clutch plates, the coupling apparatus comprises a pilot clutch, a main clutch and dual cam ring members disposed between the two clutches. When the pilot clutch is engaged by an actuator in a first direction, since a first slidable cam ring rotation is limited by the pilot clutch relative to a second fixed cam ring, the first slidable cam ring is shifted in a second opposite direction by a cam thrust force to engage the main clutch. The coupling apparatus is suitably incorporated in a differential gear assembly mounted on automotive vehicles in order to controllably and stably limit the differential motion between two shafts.
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Automobile Engineer, vol. 49, No. 4, Apr. 1959, London GB, pp. 148-149-"Differential Lock".
Hirota Isao
Kurihara Sakuo
Teraoka Masao
Tochigifujisangyo Kabushiki Kaisha
Wright Dirk
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