Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 4,138,910
Cleated Chain Wrench
Patentee:
Jonathan L. Laird, Jr. - Parkesburg, PA

USPTO Classifications:
81/65.2, 81/68

Tool Categories:
wrenches : pipe wrenches : chain and strap wrenches

Assignees:
None

Manufacturer:
Unknown

Witnesses:
Unknown

Patent Dates:
Applied: Oct. 11, 1977
Granted: Feb. 13, 1979

Patent Pictures:
Jonathan L. Laird, Jr. patent February 13, 1979
USPTO pdf tiff
Google Patents
Report data errors or omissions
Description:
The chain or strap can be turned so either side faces the work piece. The handle can be manipulated to bear on either the toothed or smooth side of the chain or strap.

The GRIP-IT strap wrench used this patent as well as Laird's earlier patent (no. 3,288,001).

The patent cites pat. no. 1,860,012 as a reference.

Copyright © 2002-2019 - DATAMP