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US 5,280,890 AGranted
Radial elastomer compression spring
AssigneeMiner Enterprises, Inc.
InventorNeal E. Wydra
Life of this patent
Estimating the term…
Abstract
A radial compression spring having a formed of an elastomer having a ratio of plastic strain to elastic strain that is greater than 1.5 to 1 into a hollow body having oriented wall sections that include a bend as a result of radial precompression. The spring is precompressed to overcome the compression set characteristics of the elastomer and to orient its molecular structure.
Claims7
A radial spring comprising:
- a) a hollow spring section formed of an elastomer material with a molecular structure and having a ratio of plastic strain to elastic strain that is greater than 1.5 to 1,
- b) said hollow spring section being defined by walls joined together in a non-circular arrangement;
- and
- c) at least two of said walls having an angle therein of greater than 45 degrees,;
- d) the molecular structure of said angle being oriented as a result of plastic deformation of the walls through an angle in excess of 90 degrees, said deformation being applied in a direction radial to said hollow spring section.
2 more elements
A radial compression spring comprising:
- a) a hollow body formed of an elastomer material with a molecular structure and having a ratio of plastic strain to elastic strain that is greater than 1.5 to 1,
- b) said hollow body being formed of wall sections, said wall sections including bends with an angle of not less than 90 degrees, and
- c) the molecular structure of the material of said bends of said wall sections being oriented as a result of plastic deformation of said wall sections through an angle substantially in excess of 90 degrees by the application of a force applied radially to said hollow body.
Dependencies are inferred from the claim text.