Slack adjusting brake cylinder for a brake unit on a railway transit vehicle
US5465816A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 1994 |
| Grant date | Nov 14, 1995 |
| Priority date | — |
| Expiry date | Jul 20, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D65/54
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A slack adjusting brake cylinder for use in a fluid brake unit of a railway transit vehicle having a brake piston slidably mounted on a support rod within a brake cylinder receiving cavity of the brake unit. A plurality of friction/load rings are slidably mounted on the support rod, a first side of which serves as an abutment stop to limit the extent of return of the brake piston along the support rod. The friction/load rings are tightly engaged on the support rod so that they are slidable only in response to fluid brake pressure forces. A spring loaded compression member is engaged with a second side of the friction/load rings, and is partially compressed between the brake piston and the friction/load rings when the brake piston is advanced outwardly on the support rod in response to activation of the brake unit, and functions to return the brake piston into engagement with the friction/load rings when the brake unit is deactivated. The degree of compression of the spring loaded compression member is limited so that when the compression has reached the limit, the spring loaded compression member will push the friction/load rings to a new position on the support rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.