Adjustable rachet-style self-tightening wrench
US5542319A · kind A · utility
Inventor
Key dates
| Filing date | Apr 17, 1995 |
| Grant date | Aug 6, 1996 |
| Priority date | — |
| Expiry date | Apr 17, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B13/505
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention is an adjustable ratchet-style self-tightening wrench. The a wrench having a main body or handle, including a fixed jaw and a moveable jaw assembly which is pivotably attached to the main body. The handle has a first and a second end. The first end is for holding the wrench and applying force. The second end of the handle is shaped to form a fixed jaw having a substantially planar work surface. The handle also includes a recess near the fixed jaw end of the wrench with two leaf springs that are positioned to be biased against a pivot lug attached to the carriage block. The moveable jaw assembly includes a moveable jaw member, a traveler carriage block and a traveler carriage nut. The moveable jaw member has a traveler carriage segment at one end and a jaw working surface at it's other end. The moveable jaw assembly is pivotably attached to the main handle via a pivot lug that protrudes from the carriage block into the main handle recess. The pivot lug is held in place by the pivot pin at the center of the outsides of the handle recess. The carriage segment of the moveable jaw member includes threads to engage the traveler carriage block which is configured to function…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.