Semi-self-contained hydraulic lash adjuster
AssigneeStanadyne, Inc.
InventorWilliam J. Gardner
Life of this patent
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Abstract
A semi-self-contained hydraulic lash adjuster includes a generally cylindrical cup-shaped follower which will be positioned with the open side down, defining a chamber within the follower. A body is positioned axially within the chamber and is supported by a spacer whose periphery is attached to the follower. A plunger is reciprocally movable within the body and a high pressure chamber is defined between the plunger and body. A check valve in the plunger controls fluid access into the high pressure chamber. A diaphragm-type seal is peripherally attached to the body and is in sealing engagement with an internal surface of the follower. Fluid is positioned within the reservoir defined by the seal, which fluid is in communication with the high pressure chamber through the check valve.
Claims6
A semi-self-contained lash adjuster including a generally cylindrical cup-shaped follower defining a chamber, a body positioned axially in said chamber and a spacer supporting said body, a plunger reciprocally movable within said body and a high pressure chamber defined between said plunger and body, a check valve in said plunger controlling fluid access into said high pressure chamber, the improvement comprising a diaphragm-type seal peripherally attached to and movable with said body and in sealing sliding engagement with an internal surface of said follower, said seal defining a reservoir in communication with said high pressure chamber through said check valve.
Dependencies are inferred from the claim text.