Sealing ring and method and apparatus for making same

Turning – Severing or cut-off – Processes

Patent

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Details

82 48, 82 82, 82 98, 82 1C, B23B 100, B23B 304, B23B 300

Patent

active

043183190

ABSTRACT:
A sealing ring is disclosed which is formed of an elastomeric material wherein the cross section thereof has a plurality of substantially flat surfaces, and wherein the inner and outer diameter surfaces, which are the sealing surfaces thereof, are molded surfaces. The remaining surfaces are machined or cut surfaces. The preferred number of surfaces or faces in cross section is 8, and this has been found to give the best results, although other numbers of surfaces may also be used. Since the ring itself is not a molded ring, but has only the inner and outer surfaces thereof which are molded, there is also disclosed a novel method of making such a ring, as well as a novel apparatus for use in a carrying out the method of making the ring, wherein a molded elastomeric sleeve is provided and wherein inclined surfaces are cut therein in such a way that when the ring is severed from the sleeve it will have the desired number of flat surfaces.

REFERENCES:
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patent: 929679 (1909-08-01), Lorenz
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patent: 3163063 (1964-12-01), Corrigan
patent: 3207826 (1965-09-01), Yost
patent: 3381361 (1968-05-01), DeCuissart et al.
patent: 3545321 (1970-12-01), Phelps et al.
patent: 3611847 (1971-10-01), Derman et al.
patent: 3916737 (1975-11-01), Libicki
patent: 4046038 (1977-09-01), West
patent: 4126064 (1978-11-01), Tarrant

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