Door closing mechanism
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 25, 2013
Grant Date -
Sep 8, 2011
app pub date -
Aug 27, 2009
filing date -
Nov 14, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A door closing mechanism which includes a hydraulic rotation damper, having a closed cylinder cavity within a cylinder barrel, a rotational damper shaft which extends into the cylinder cavity, a piston dividing the cylinder cavity into a first side above the piston and a second side below the piston, a one-way valve allowing fluid flow from said first side to said second side of the cylinder cavity, and a fluid passage between said first and second sides of the cylinder cavity, with a flow restrictor, in particular in the form of a needle valve, adjustable through an orifice in the cylinder barrel, wherein said second side of the cylinder cavity and said orifice are at opposite sides of the flow restrictor.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2009 Application Filing Year
- E05F Class
- 256 Applications Filed
- 106 Patents Issued To-Date
- 41.41 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 3 Citation Count
- E05F Class
- 2.45 % this patent is cited more than
- 12 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 25, 2024 |
