192 clutches and power-stop control – Clutches – Plural clutch-assemblage
Patent
1990-11-26
1992-01-14
Lorence, Richard
192 clutches and power-stop control
Clutches
Plural clutch-assemblage
192 57, 192 58B, F16D 4706, F16D 3500
Patent
active
050802100
ABSTRACT:
A viscous coupling comprises first and second torque-transmitting members (1, 2) rotatable relative to each other, defining an operating chamber at least partially filled with a viscous fluid; a plurality of first plates (16) engaging and rotationally fast with the first torque-transmitting member; a plurality of second plates (17) interleaved with the first plates, and rotatably mounted on the second torque-transmitting member (2); clutch plates (18) engaging the second torque-transmitting member and disposed alternately with the second plates; a control member (9) operable to compress the clutch plates axially to clamp the second plates between them, and seals (14, 15) operable between the first torque-transmitting member and the control member and between the second torque-transmitting member and the control member, at sealing surfaces (9A, 2A) which are substantially of equal effective diameter to one another. Because the surfaces are of equal diameter, the pressure of the viscous fluid within the operating chamber does not have any effect on the force exerted by the control member on the clutch plates.
REFERENCES:
patent: 4885957 (1989-12-01), Taureg et al.
patent: 4899859 (1990-02-01), Teraoka
Lorence Richard
Viscodrive Japan Kabushiki Kaisha
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