Adjustable length extension
US4856388A · kind A · utility
8Cited by
1References
2Claims
0Family size
Inventor
Key dates
| Filing date | Apr 14, 1988 |
| Grant date | Aug 15, 1989 |
| Priority date | — |
| Expiry date | Apr 14, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B23/0021
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An adjustable length extension tool is disclosed for interconnection between a driving tool, such as a socket wrench, and an object to be driven, such as a screw or bolt. An extension housing body includes a shaft that can move reciprocally within a bore therein; one end of the sleeve member includes a box opening for interconnection with the driving tool and one end of the shaft includes a box pin for interconnection with a socket. An adjustable compression sleeve is received around the shaft to limit the movement and drag of the shaft within the bore thereby providing infinite length adjustability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.