Disk brake/parking brake with threaded piston rod and motor
US5148894A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 11, 1990 |
| Grant date | Sep 22, 1992 |
| Priority date | — |
| Expiry date | Oct 11, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2129/10
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A brake (10) capable of functioning as a disk brake and parking brake having engaged and disengaged modes of operation comprising: a piston rod (30) movable with the disk brake piston (14) having a threaded portion (40), a nut (60) rotatably movable on the threaded portion (40) relative to a first stop (52); a pressurizing device (80, 82, 84; 92) for pressurizing the fluid chamber (20) to move the piston (14) and piston rod (30) to respective engaged positions, and a motor (66, 68) for rotating the nut (60) in one of a) synchronism with pressurizing the fluid chamber and b) subsequent thereto so that the nut moves along the threaded portion (40) into a contracting position with the first stop (52) for preventing the piston rod (30) from moving from its engaged position to achieve the parking brake function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.