Power transmission device and torque transmission member
US7048661B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2003 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | Dec 2, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2131
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A power transmission device for transmitting torque of a driving unit to a driven unit includes a first rotator, a second rotator, and a torque transmission member. The first rotator is to be driven for rotation by the driving unit. The second rotator is coupled to the driven unit. The torque transmission member is made of an elastically deformable material for making contact with the first rotator and the second rotator to transmit torque from the first rotator to the second rotator. An outer periphery of the torque transmission member includes a contact surface for making contact with the rotators and a non-contact surface out of contact with the rotators. The non-contact surface is provided with an oxygen permeance suppression layer made of a material having an oxygen permeability that is less than that of the contact surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.