US Patent: 4,934,674 - Two station, single action vise


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US Patent: 4,934,674

Two station, single action vise

Patentee:

Leon M. Bernstein (exact or similar names) - Minneapolis, MN

USPTO Classifications:

269/136, 269/154, 269/242, 269/43, 269/906

Tool Categories:

work holding : vises : machinist vises

Assignees:

Kurt Mfg. Co., Inc. - Minneapolis, MN

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Mar. 22, 1989
Granted:	Jun. 19, 1990

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Kurt Mfg. Co.

Description:

This patent is the earliest we have found of the now-famous Kurt vise mechanism using a hemispherical ball to transmit the clamping force to the movable jaw.