Temperature compensated self-tensioning idler pulley
US4808148A · kind A · utility
31Cited by
12References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 4, 1988 |
| Grant date | Feb 28, 1989 |
| Priority date | — |
| Expiry date | Apr 4, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2007/0853
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A belt tensioning device includes a resilient coupling which interconnects an idler pulley hub and a stationary mounting member. A ratchet and pawl mechanism interconnects the hub and the stationary mounting member to prevent the belt from overcoming the biasing force of the tensioning device during high belt loads. A resilient biasing element such as an elastomeric element is located between the ratchet and pawl mechanism and the stationary mounting member to allow limited movement of the idler pulley hub away from a belt in order to relieve belt tension such as caused during thermal expansion of an engine block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.