US Patent: 3,718,336 - Shaft Seal and Method of Manufacture


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US Patent: 3,718,336

Shaft Seal and Method of Manufacture

Patentees:

Richard H. Jackson (exact or similar names) - Downers Grove, DuPage County, IL

Dale J. Warner (exact or similar names) - Chicago, Cook County, IL

USPTO Classifications:

277/372, 277/374, 277/390, 277/910

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:	Jan. 22, 1971
Granted:	Feb. 27, 1973

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:

Abstract:

A mechanical shaft seal having a primary face seal and a secondary internal seal wherein the seal line of the secondary seal is balanced in axial alignment with the primary face seal. The seal is a take-apart seal having a housing with a brazed-in internal radial step, the housing receiving a stepped adapter having a circumferential groove therein for the secondary seal and an axial end face adapted to hold the primary face seal. The adapter is axially movable in the housing and is urged out of the housing by a spring.