Power controlling apparatus using friction material
US4523668A · kind A · utility
8Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1982 |
| Grant date | Jun 18, 1985 |
| Priority date | — |
| Expiry date | Aug 4, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2121/22
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A friction material made of a molded cork, a friction surface of which is covered with a liquid or semi-solid lubricant layer including a solid lubricant layer comprising a solid lubricant having a larger particle size and a solid lubricant having a smaller particle size and filling vacant spaces between the larger-sized solid lubricant in dense form, affords a long service life when used in a power controlling apparatus which can transmit power and/or change rotation speed by applying friction and using a friction material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.