Clutch release bearing and method of manufacture
First Claim
1. Hydraulically operated clutch release bearing device of the type comprising an operating element provided with an annular piston and a seal in contact with the piston, and a rolling-contact bearing axially secured to the operating element, the piston comprising a rear surface in contact with the said seal, at least one concave region being formed in the said rear surface of the piston, wherein the at least one concave region occupies a limited portion of the rear surface of the piston, and wherein a cavity is defined by the seal and the concave region in the absence of hydraulic pressure, and wherein the cavity is at least partially filled by the seal when pressurized fluid is applied to the seal, and wherein at least one pip projects into the at least one concave region.
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Accused Products
Abstract
Hydraulically operated clutch release bearing device of the type including an operating element provided with an annular piston and a seal in contact with the piston, and a rolling-contact bearing axially secured to the operating element, the piston including a rear surface in contact with the said seal, at least one concave region being formed locally in the said rear surface of the piston.
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Citations
10 Claims
- 1. Hydraulically operated clutch release bearing device of the type comprising an operating element provided with an annular piston and a seal in contact with the piston, and a rolling-contact bearing axially secured to the operating element, the piston comprising a rear surface in contact with the said seal, at least one concave region being formed in the said rear surface of the piston, wherein the at least one concave region occupies a limited portion of the rear surface of the piston, and wherein a cavity is defined by the seal and the concave region in the absence of hydraulic pressure, and wherein the cavity is at least partially filled by the seal when pressurized fluid is applied to the seal, and wherein at least one pip projects into the at least one concave region.
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9. Clutch release bearing device comprising:
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an operating element comprising a piston and a seal in contact with the piston, the piston comprising a rear surface in contact with the said seal, at least one concave region being formed in the said rear surface of the piston, wherein the at least one concave region occupies a limited portion of the rear surface of the piston, and wherein a cavity is defined by the seal and the concave region in the absence of hydraulic pressure, and wherein the cavity is at least partially filled by the seal when pressurized fluid is applied to the seal, and wherein at least one pip projects into the at least one concave region; and a rolling-contact bearing axially secured to the operating element. - View Dependent Claims (10)
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Specification