Slack adjuster for a rail vehicle brake system
US4138002A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1978 |
| Grant date | Feb 6, 1979 |
| Priority date | — |
| Expiry date | Feb 1, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D65/66
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A one-nut slack adjuster with a nut axially disposed having clutch surfaces and on non-self-locking engagement on a spindle coaxially positioned within a tube moving axially to apply brakes has a spring biased thrust bearing held forwardly on the nut in the brake application direction disposed to engage a fixed position control member and when the nut is moved axially forwardly a predetermined desired slack distance thereby to bias the nut backwardly. A second trust bearing on this nut is placed forward of the control member to engage it at a distance from rest less than the clutch separation distance. In a double acting embodiment a further trust bearing spring biased between the nut and tube in a position forward of the control member holds the nut in a forward direction in clutch engagement. A further feature is a barrel spring arrangement foreshortening the assembly by a sleeve converting two coaxially disposed spring sections in series.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.