Extensible and retractable rod
US5070620A · kind A · utility
Inventors
Key dates
| Filing date | Mar 1, 1990 |
| Grant date | Dec 10, 1991 |
| Priority date | — |
| Expiry date | Mar 1, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/598
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An extensible and retractable rod including an outer section and an inner section telescopically received in the outer section for extension and retraction relative thereto. The outer section has an opening therein including an upper peripheral edge. A detent member associated with the inner section is spring biased to move laterally of the inner section to releasably lock the inner section in an extended position relative to the outer section. The detent member has an upper surface and a lower surface, each having a laterally outer edge, and a laterally outwardly facing surface extending between the laterally outer edges of the upper and lower surfaces. The laterally outwardly facing surface includes a camming surface which engages the outer section at the lower peripheral edge of the opening for pivoting the detent member so that the upper surface of the detent member projects into the opening in the outer section as the detent member begins to move into registration with the opening. The upper surface of the detent member engages the upper peripheral edge of the opening upon further extension of the inner section to stop the extension of the inner section when the detent member …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.