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US 6,315,299 B1Granted
Apparatus and method of forming a tension resistant O-ring
OwnerJulian S. Taylorinventor
Life of this patent
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Abstract
A method of forming a tension resistant O-ring is formed by extruding a length of precured elastomer with a coextensive central aperture; longitudinally dividing the elastomer; winding a strand of nonelastic synthetic material to form an endless ring having a predetermined toric axis diameter and a toric diameter less than the diameter of the elastomer aperture; assembling the endless ring and elastomer halves in a rubber mold; and, heating the mold to cure the elastomer.
Claims5
A method of producing a tension resistant O-ring comprising the steps of:
- a) extruding a predetermined length of ovate shaped elastomer having a coextensive central aperture;
- b) dividing the length of elastomer along the minor axis of the ovate shape to form first and second identical halves, each said half having a coextensive semicircular trough;
- c) providing an endless ring of flexible non-elastic synthetic material having a predetermined toric axis diameter and a toric diameter less than the diameter of the central aperture;
- 1) providing a cylindrical form having a circumferential groove of predetermined diameter;
- 2) winding a thread-like strand of said synthetic material in the groove of said cylindrical form to generate said endless ring;
- d) providing a two-part mold having a cooperating endless semicircular groove of predetermined diameter in confronting face surfaces;
- e) placing said first elastomer half in the endless groove of one part of the two-part mold with the semicircular trough disposed upwardly;
- f) placing the endless ring in the upwardly open semicircular trough of the first elastomer half;
- g) placing the second elastomer half in registration on the first elastomer half;
- h) closing the two-part mold for compressing the assembled elastomer halves and endless ring;
- i) heating the two-part mold to a predetermined temperature curing the elastomer;
- and,
- j) removing the finished O-ring from the two-part mold.
10 more elements
A method of producing a tension resistant O-ring comprising the steps of:
- m) extruding a predetermined length of ovate shaped elastomer having a coextensive central aperture;
- n) dividing the length of elastomer along the minor axis of the ovate shape to form first and second identical halves, each said half having a coextensive semicircular trough;
- o) providing an endless ring of flexible non-elastic synthetic material having a predetermined toric axis diameter and a toric diameter less than the diameter of the central aperture;
- 1) providing a cylindrical form having a circumferential groove of predetermined diameter;
- 2) winding a thread-like strand of said synthetic material in the groove of said cylindrical form to generate said endless ring;
- p) cooperatively assembling said first and second halves in superposed relation with said endless ring interposed therebetween;
- and,
- q) heating the assembly of step p) to a predetermined temperature.
5 more elements
A method of producing a tension resistant O-ring comprising the steps of:
- t) extruding a predetermined length of elastomer in a desired transverse cross section configuration with a coextensive central aperture;
- u) dividing the length of elastomer along the diameter to form first and second identical halves, each said half having a coextensive semicircular trough;
- v) providing an endless ring of flexible non-elastic synthetic material having a predetermined toric axis diameter and a toric diameter less than the diameter of the central aperture;
- 1) providing a cylindrical form having a circumferential groove of predetermined diameter;
- 2) winding a thread-like strand of said synthetic material in the groove of said cylindrical form to generate said endless ring;
- w) cooperatively assembling said first and second halves in superposed relation with said endless ring interposed therebetween;
- and,
- x) heating the assembly of step w) to a predetermined temperature.
5 more elements
Dependencies are inferred from the claim text.