Liquid cooled brake apparatus
US4938321A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1989 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | Jul 21, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2121/22
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A tubular hub member receives a shaft and is surrounded by a housing formed by a base section coupled to a cup-shaped closure section. The hub member defines an inlet passage for circulating cooling oil and supports a set of brake discs which interfit between a set of brake plates supported by pins projecting inwardly from the base section. An annular thrust plate is supported by the base section for axial movement and carries a set of compression springs which urge the thrust plate for clamping the brake plates and discs against a pressure plate mounted within the closure section. An annular electrical coil and support body are mounted by screws and spacer sleeves within the closure section, and an annular armature plate is supported by the sleeves for axial movement adjacent the end wall of the closure section. A set of actuating pins extend axially between the armature and thrust plates through the coil body and pressure plate, and the armature plate cooperates with a portion of the closure section to define a variable oil recirculating passage. Axial movement of the armature plate displaces cooling oil into the inlet passage to provide a surge of cooling oil during braking. The…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.