Retractable rod structure of hand tool
US9102051B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jul 19, 2013 |
| Grant date | Aug 11, 2015 |
| Priority date | — |
| Expiry date | Apr 8, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25G1/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A retractable rod structure of a hand tool includes an inner rod disposed along an axis. One end of the inner rod is provided with a tightening seat. The tightening seat has a tightening surface on a circumferential side thereof. A tightening ring is fitted on the tightening surface. An outer rod is fitted on the inner rod. The outer wall of the tightening ring is against the inner wall of the outer rod. The outer rod is turned to bring the tightening ring to turn simultaneously. Through the guide of the tightening surface, the tightening ring is tightened between the tightening surface and the inner wall of the outer rod, like a wedge, such that the outer rod and the inner rod can be positioned at any desired position to adjust the length of the retractable rod structure of the hand stool in a stepless way.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.