Chain tensioner
US10024401B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 16, 2015 |
| Grant date | Jul 17, 2018 |
| Priority date | — |
| Expiry date | Jun 20, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2007/0859
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An object of the present invention is to provide a chain tensioner that allows a necessary and sufficient amount of oil to be fed during restart following a long stoppage of oil feeding and that maintains a proper pressure, thus preventing possible noise and vibration. An oil storing chamber 123 is formed inside a plunger 120 and forward of a check valve 150 in a protruding direction of the plunger 120. A tensioner body 110 has an oil feeding hole 114 through which a cylindrical surface portion 113 of a plunger housing hole 111 communicates with an outside and a high-pressure discharge hole 115 through which a pressure oil chamber 101 in the plunger housing hole 111 communicates with the outside. A relief valve 160 that is opened under a high pressure is provided in the high-pressure discharge hole 115 and closer to the pressure oil chamber 101.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.