Title:
SWITCH TYPE SPEEDY PIPE WRENCH
Document Type and Number:
WIPO Patent Application WO/1997/040964
Kind Code:
A1
Abstract:
A switch-type speedy pipe wrench having the configuration of the conventional pipe wrench, and is provided with an arch-shaped self-sliding opening Jaw, a contained in type of automatically holding and returning means, a locking wheel control and a Jaw limit stop so that the whole operation procedure, including turning the locking, wheel-opening, the Jaw-holding, the workpiece-locking, the Jaw-closing the Jaw, can be completed within one second only by lightly pushing the switch button.
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Inventors:
ZHAO YOUYI (CN)
Application Number:
PCT/CN1997/000022
Publication Date:
November 06, 1997
Filing Date:
March 21, 1997
Export Citation:
Assignee:
ZHAO YOUYI (CN)
International Classes:
B25B13/16; B25B13/50; (IPC1-7): B25B13/50
Foreign References:
| US3357286A | 1967-12-12 | |||
| US3389624A | 1968-06-25 |
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