Valve rotating device
AssigneeTRW Inc.
InventorStanley H. Updike
Life of this patent
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Abstract
An improved garter spring actuated valve rotator device wherein annular spring damping means are included internally of the coils of the garter spring.
Claims8
In a valve rotating device having a garter spring for effecting valve rotation during reciprocation of the valve and which coacts between a spring washer in circular contact with said garter spring and a body member having an annular pocket for receiving the garter spring, the improvement which comprises an elastomer cast and cured in place in said annular pocket and internally of said garter spring and acting to dampen movement of the spring coils of the garter spring.
A valve rotator for rotating a spring biased valve about the axis of the stem of the valve in an internal combustion engine, said valve rotator comprising:
- (a) a body to be located coaxial with the valve stem, attached to and rotatable with the valve stem, said body having an annular groove therein;
- (b) a valve spring retainer coaxial with and adjacent said body and adapted for contact with the valve biasing spring;
- (c) a garter spring disposed in said annular groove, said garter spring comprising a series of coils;
- (d) a Belleville washer located between said garter spring and said valve spring retainer and which applies a force on the coils tending to tilt the coils when said body and said valve spring retainer move axially toward each other;
- (e) means located internally of the coils of said garter spring and extending coextensively therewith, said means engaging said coils and increasing the axial load capacity of said garter spring and clamping the coils of the garter spring between said Belleville washer and said body to minimize distortion of said coils as well as to minimize oscillation of the garter spring coils upon axial loading of the garter spring due to said body and said valve spring retainer moving axially toward each other.
Dependencies are inferred from the claim text.