| 摘要 |
1,265,418. Friction clutches. BORGWARNER CORP. 20 Aug., 1969 [3 Sept., 1968], No. 41647/69. Heading F2C. In an hydraulically-applied multi-plate friction clutch, or brake, inadvertent application of the clutch due to the effect of centrifugal force acting on the residual fluid in the clutch apply chamber 72 is prevented by an opposing force due to centrifugal force acting on lubrication fluid in a balance chamber 85 on the opposite side of the apply piston 33. The chamber 85 also houses return springs 86. As shown, a pair of friction clutches 50, 51 connect an input shaft 12 to respective shafts 13, 14, apply pressure in clutch 50 being relieved, on clutch disengagement, by a conventional centrifugal ball valve 60. The clutch plates may be flat or dished to assist separation. The apply chamber 72 is charged from a passage 61 in the driving housing 20 and the chamber 85 by lubrication fluid from the annular space between the shafts 13 and 14, and radial bores 90, 91 in the shaft 14 and housing 20 respectively. |
