Fluid actuatable fan clutch with internal caliper action
US4132301A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 21, 1977 |
| Grant date | Jan 2, 1979 |
| Priority date | — |
| Expiry date | Mar 21, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D25/0635
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fluid actuatable fan clutch having an energy absorbing internal caliper action, including a pulley or sheave rotatably mounted on a fixed shaft; an annular friction facing connected to an internal surface of the sheave; a fan blade hub rotatably mounted on the shaft adjacent the sheave, the hub having an annular piston cavity or cylinder having a piston located therein facing the friction facing, the piston being normally urged out of contact with the friction facing by a suitable spring member; an annular thrust cap located on the side of said friction facing opposite the piston, the thrust cap being connected to the fan hub and being normally out of contact with the friction facing; and suitable passageways for supplying air or other fluid to the back side of said piston for urging the piston into contact with said friction facing and against said thrust cap to thereby engage the fan hub with the sheave. The fan clutch also has a removable fan hub cap for permitting access to the airseal located at the outer end of the shaft to thereby permit easy replacement thereof. The fan clutch is further provided with a safety retaining ring located on the shaft to prevent the fan hub and…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.