Release hold mechanism with gravity weighted indicator flag
US7093694B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2003 |
| Grant date | Aug 22, 2006 |
| Priority date | — |
| Expiry date | May 8, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2069
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The present invention discloses a hand brake mechanism having a gravity based release hold mechanism with a visual indicator to prevent unwanted application of the railcar brakes and indicate such release hold condition. The release hold mechanism comprises a gravity based member pivotally linked to a release shaft preventing reverse rotation of the release shaft causing an unintended take-up of the chain. A detent retaining device disposed within the railcar hand brake housing further provides improve reliability of the operation. The gravity based member incorporates an indicator portion having a reflective coating to indicate such release hold position of the railcar hand brake.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.