Rail brake damper
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 8, 2021
Grant Date -
Oct 15, 2020
app pub date -
Jul 12, 2017
filing date -
Jul 12, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
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Abstract
A rail brake damper includes a cylinder-piston arrangement. A damping device assigned to the piston comprises at least one damping valve having at least one piston channel, which passes through the piston, connecting the two operating chambers of the cylinder, and a closure element assigned to the piston channel. The closure element is spring pre-loaded with the effect of closing the piston channel and is acted on by the hydraulic pressure which prevails in the operating chamber facing away from the piston rod with the effect of opening the damping valve.
First Claim
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International Classification(s)
- 2017 Application Filing Year
- B61K Class
- 65 Applications Filed
- 43 Patents Issued To-Date
- 66.16 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- B61K Class
- 0 % this patent is cited more than
- 4 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Dec 8, 2024 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Dec 8, 2028 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 8, 2032 |
