Tensioner
US11448292B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2020 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Jan 11, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2007/0859
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
To provide a tensioner that can keep the oil pressure in an oil pressure chamber stable and consistently generate suitable reaction force and damping force to impact loads to reduce looseness in the chain and noise. A piston is set such as to partition an inner space of a plunger into an adjustment space on the front side and the oil pressure chamber on the rear side, a piston restricting member restricting the movement of the piston toward the adjustment space. An oil relief mechanism is configured to cause the piston to move forward when oil pressure in the oil pressure chamber rises so as to discharge oil inside the oil pressure chamber to the outside. The piston restricting member has an orifice function that can control the amount of discharged oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.