Method of making dynamic rotational counterbalance structure
OwnerRonald B. Kilgoreinventor
Life of this patent
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Abstract
A dynamic rotational counterbalance structure includes a discoid balance body having a groove or race formed in an outer circumferential surface of the body. A plurality of movable weights such as spherical weights are positoined in the groove along with a lubricating and noise damping fluid. The groove is closed by an outer circumferential band. At least two of the balance structures are affixed coaxially on a rotatably member to be balanced. During rotation of the member so balanced, the weights shift circumferentially to offset unbalancing forces which influence the rotating member.
Claims7
A method of manufacturing a dynamic rotational counterbalance structure comprising the steps of:
- (a) forming a discoid counterbalance body, said body having an outer circumferential surface and an axis of rotation;
- (b) forming a radially outwardly opening outer circumferential groove in said outer surface of said body;
- (c) positioning a plurality of movable weight means in said groove, said weight means being sized and shaped to move freely about said groove;
- and
- (d) positioning an outer circumferential band in surrounding and sealing relation to said body to thereby enclose said groove.
A method of manufacturing a dynamic rotational counterbalance structure comprising the steps of:
- (a) forming a discoid counterbalance body, said body having an outer circumferential surface, an axis of rotation, and opposite base surfaces;
- (b) forming an outer circumferential groove in said outer surface of said body;
- (c) positioning a plurality of movable weight means in said groove, said w eight means being sized and shaped to move freely about said groove;
- (d) positioning an outer circumferential band in surrounding and sealing relation to said body to thereby enclose said groove;
- and
- (e) prior to forming said groove, performing the steps of:
- (1) boring a groove access aperture in one of said base surfaces at a position to communicate with said groove;
- (2) inserting a sealing plug in said aperture;
- and
- (3) thereafter, forming said groove in such a manner that an inner end of said plug conforms to the shape of said groove.
Dependencies are inferred from the claim text.