Rotational control apparatus
US6755289B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 19, 2002 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | Aug 19, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D65/12
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A rotational control apparatus (10) includes multiple facings (274-276) which sandwich multiple friction plates (252, 253) rotatable with. To create turbulent air flow, the friction plates (252, 253) include an undulating outer circumferential edge (258) and a plurality of passages (260) in the interface portion and overlapping the inner peripheries (282) of the facings (274-276). An automotive clutch release type bearing (290) directly abuts between and is encapsulated in the piston cavity (36) and a cavity (36) of a piston 40 and a cavity (277) formed in the friction facing (274). The friction facing (274) engages the axial end (34) of the air chamber (24) and in alternate form, a friction facing (300) of the piston (40) interfaces with an interface surface (318) intergrally formed on the hub (12) to control rotation of the hub (12) when the facings (274-276) and the friction plates (252, 253) are disengaged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.