Fluid pressure actuated brake unit
US4337690A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 6, 1980 |
| Grant date | Jul 6, 1982 |
| Priority date | — |
| Expiry date | May 6, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18992
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fluid pressure actuated brake unit has a push rod (3) axially movable in a housing (1) and a piston (2) with a wedge element (7) axially movable substantially perpendicular thereto. A wedge surface (12) on the wedge element is arranged to transmit a force from the piston to the push rod via a working roller (8) on the push rod. In order to reduce the dimensions of the wedge element (7) and to give a smooth transition from the brake application stroke to the brake operation stroke the wedge surface (12) at its end remote from the piston (2) has an edge (13) intended for coaction with the working roller (8) during the brake application stroke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.