Tensioner
US7455607B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2006 |
| Grant date | Nov 25, 2008 |
| Priority date | — |
| Expiry date | Jun 6, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2007/0855
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A tensioner that includes a piston supported slidably in a piston bore formed in a housing, a piston spring biasing the piston in the protruding direction, and a circlip member having an expandable ring-shaped body that is engageable with the rack teeth of the piston. In the piston bore, the ring-shaped body of the circlip member is adapted to engage with an upper and lower stop surface. The rack teeth of the piston are formed in such a shape that when the ring-shaped body of the circlip member engages with the upper stop surface of the piston bore, the piston is permitted to move in the protruding direction and, when the ring-shaped body of the circlip member engages with the lower stop surface of the piston bore, the piston restricts movement in the retracting direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.