Adjustable wrench
US4324160A · kind A · utility
Inventor
Key dates
| Filing date | Dec 8, 1980 |
| Grant date | Apr 13, 1982 |
| Priority date | — |
| Expiry date | Dec 8, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B13/107
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The open ended wrench includes a manually graspable handle and a nut-seizing jaw formation connected to the handle. The jaw formation has a nut-receiving opening therein defined between an upper jaw member, a lower jaw member spaced a fixed distance from the upper jaw member and a jaw back portion extending between the upper and lower jaw members. A slot communicates with the opening and extends through the jaw back portion. A plurality of substantially equal length shims are longitudinally slidable through the slot from a location outside of the opening to a location inside of the opening to provide a variable dimension for the nut-receiving opening. Each of the shims has an interlock formation for preventing any shim from being located inside of the opening unless there is supportive contact with the jaw. In one embodiment, each shim has one end thereof formed with an offset end portion including an inclined section extending angularly from the plane of the shim and an end section extending from the inclined section. The offset end portion defines the interlock formation. In another embodiment, some of the shims are from a first group of shims which are rolled from stock having a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.