Quick adjust ratcheting wrench with cam actuated clamping
US7478577B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Feb 27, 2007 |
| Grant date | Jan 20, 2009 |
| Priority date | — |
| Expiry date | Feb 27, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B13/463
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention is a wrench with jaws adjusted by a cam mechanism and a ratchet mechanism providing a free return stroke of the handle, a simplified construction, convenience of use, durability, effectiveness, and cost and weight reduction; comprising a handle with housing, annular control and adjusting discs, a plurality of radial guide slots in the adjusting disc and cam features in the control disc, a plurality of jaws in the housing, each jaw, having a slider spring loaded, is positioned in said guide slots, and a cam follower interacting with cam features formed on the inner edge of the control disc; radial guide slots on the surface of the adjusting disc facing the control disc, each guide slot limited by the inner arch-shaped edge of the adjusting disc and open on its periphery; cam followers and profiles provide wedging to the rotation of the discs during the return stroke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.