Push button-controlled retractable bar
US8684620B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Aug 29, 2012 |
| Grant date | Apr 1, 2014 |
| Priority date | — |
| Expiry date | Sep 18, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7088
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A retractable bar using a positioning spring leaf and a control device to control positioning between an inner tube and an outer tube is disclosed. The control device includes a movable member, a push button, and a linking device connected between the movable member and the push button. When the push button is not pushed by an external force, the positioning spring leaf will be pushed by the movable member to force its positioning protrusions into engagement with locating notches of the inner tube to lock the outer and inner tubes. When the push button is pushed by an external force, the linking device will be forced to move the movable member away from the positioning spring leaf, causing the positioning spring leaf to disengage the positioning protrusions from the locating notches of the inner tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.