Helical choke for brake valves
US6565063B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2002 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Jan 22, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T17/04
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A choke for a brake control valve coming within the physical space limitation by forming a helical choke path. The choke includes a body having a passage and a plug in a passage. The helical path is created between and defined by the passage and the plug to form the choke. The length the passage is less an inch and the length of the plug is less than 0.25 inches. The body includes the first portion having an external thread and a stem portion. A filter is mounted on the stem portion. The first portion is mounted in a threaded opening in a first wall of the valve. The filter extends into an opening in a second wall of the valve and a cap mounted in the second opening contacts the filter and holds it secure on the stem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.