Automatic sizing one-handed locking pliers
US7721630B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 13, 2006 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | Dec 3, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B7/123
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An automatically adjustable locking pliers or tool includes a jaw fixed to a first handle and a jaw that pivots about the first handle. The pivoting jaw is connected to a lower tightening handle. A lever connects the tightening handle and first handle. A self-adjusting sizing and locking mechanism includes a thumb jaw sizing piece located near the jaws and movable to open the jaws so that they can be sized around a workpiece. When the thumb jaw sizing piece is released, the jaws automatically size and clamp lightly around the workpiece. The locking mechanism uses balls between a locking rod and a tapered surface. Locking occurs when the balls wedge between the rod and the tapered surface. A release cylinder is connected to a release paddle movable to unlock the mechanism. The sizing piece and locking mechanism are operable to automatically size and lock the pliers or tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.