Axial braking device
US4564088A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1984 |
| Grant date | Jan 14, 1986 |
| Priority date | — |
| Expiry date | Jan 9, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7061
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A braking device for arresting an axial relative movement between a bearing, and a shaft slidably engaging the bearing and extending through a cylinder which is axially immovable to the bearing. The device comprises: an annular piston slidably received in the cylinder and slidably engaging the shaft; a brake shoe engaging the shaft axially immovably relative to the cylinder and radially contractible to apply a brake to the shaft; a resilient radial clamp member engaging the outer surface of the brake shoe, axially compressible by axial movement of the annular piston and thereby reduced in inside diameter to force the brake shoe against the surface of the shaft; and a piston driving device for moving the shaft along its axis through a controlled selective supply of a pressurized fluid to the cylinder. The piston driving device may comprise a coil spring to bias the piston to cause an axial compression of the radial clamp member, and a device for effecting the controlled supply of the fluid. The shaft may be normally arrested or released by appropriate arrangement of the piston driving device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.