Regulating valve of a hydraulic door closer
US8240005B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 9, 2008 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Feb 18, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/132
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to a regulating valve, which is attachable in particular in a bore, executed with a female thread, of a hydraulic door closer. The regulating valve has a body adjoined by a regulating area. The regulating valve also has a thread provided with an anti-rotation element. The thread, including the anti-rotation element, being screwed into the female thread of the bore. In order to provide a regulating valve of a simple design, in which any unwanted adjustment of the regulating valve during operation is excluded, the anti-rotation element of the regulating valve has a plastic material layer at the thread flanks of the thread. The plastic material layer cooperates with the female thread of the door closer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.