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US Patent: 3,138,390
Rotary Seal With Annular Bead
Patentee:
Hans Jensen (exact or similar names) - Wheeling, Cook & Lake Counties, IL

USPTO Classifications:
277/374, 277/399, 277/402, 277/407

Tool Categories:
industrial machines : industrial machine mechanisms : shaft seals

Assignees:
Gits Bros. Mfg. Co. - Chicago, Cook County, IL

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Nov. 15, 1960
Granted: Jun. 23, 1964

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Gits Bros. Mfg. Co.
Description:
Claim:

A rotary seal comprising a casing ring for being supported in a housing and having an outer cylindrical portion with an inwardly turned retaining flange at one end and an inwardly turned sealing flange at the other end having a radial sealing face, a carrier ring for rotation with a shaft member having an outwardly turned spring backing flange projecting beyond the inner edge of said retaining flange, a yieldable mounting ring on the carrier ring for mounting-on the shaft member, a U-shaped sealing ring of a non-rigid material with a first radial side against an inner surface of said spring backing flange and a second radial side adjacent said radial sealing face of the casing ring, an annular bead carried on said second side of the sealing ring having a rounded convex outer surface to sealingly engage said radial sealing face, said Second side forming an outwardly extending support which pivots about its radial inner edge where it is connected to the base of the U-shaped ring with said rounded surface being substantially in line engagement with the radial sealing face, a spring positioned between the first and second sides of the sealing ring, and annular spring end rings between the ends of the spring and said sides of the sealing ring clamping the first side against the carrier ring flange and holding said annular bead against said sealing face of the sealing flange.

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