Electromagnetic brake with cam release
US4476965A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1982 |
| Grant date | Oct 16, 1984 |
| Priority date | — |
| Expiry date | Aug 9, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2127/04
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A normally engaged electromagnetic brake assembly includes an auxiliary cam release device. In a preferred form, the electromagnetic brake assembly includes interleaved and axially moveable sets of friction rotors and rings, normally urged together into frictional engagement by means of compression springs. The brake assembly includes an armature ring and coil assembly, wherein the armature ring is normally spaced from the energizable coil by the springs during brake engagement. Upon energization of the coil, the ring is pulled toward the coil against the bias of the springs, whereby the rotors and rings are released from frictional engagement with each other. The armature ring is fixed to an axially moveable shaft; the cam release mechanism is fixed to an opposite end of the same shaft. As the shaft is axially moveable, the cam release mechanism includes a torque arm partially rotatable relative to the shaft, whereby the movement of the arm effects movement of the armature ring against the bias of the springs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.