Brake actuation unit with slack adjustment
US4785717A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1987 |
| Grant date | Nov 22, 1988 |
| Priority date | — |
| Expiry date | Jun 26, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61H15/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A brake actuation unit comprises a fluid pressure cylinder with a piston movable in the cylinder which has a central projection portion with a recess having axially spaced opposed coupling surfaces. The spindle is centrally arranged in respect to the piston and a nut is threadable on the spindle and has a tubular portion terminating in a flange which has a flange projecting portion extending into the recess of the piston projection portion and it has opposed coupling surfaces engageable with respective opposed coupling surfaces of the piston projecting portion so as to form respective axially opposite direction of movement coupling pairs. The guide sleeve is positioned over in spaced relationship to the nut tubular portion and has a radially extending collar on an end thereof adjacent the piston. An output head is movable in an axial direction to apply a braking force and has a tubular portion telescopically engaged over the guide sleeve. An actuation compression spring is disposed between the collar and the output head. A stop projects outwardly from the tubular portion of the nut beyond the piston side end of the guide sleeve and is easily turnable thereon. At least two opposed a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.