Damper
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 4, 2022
Grant Date -
Mar 4, 2021
app pub date -
Mar 22, 2019
filing date -
Mar 28, 2018
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A damper includes a cylinder, a rod including a first engaging portion at a tip end thereof, and a piston formed of an elastic resin material. The piston includes a convex portion provided so as to protrude at a base end portion located on a rod base end side and always in pressure contact with an inner circumference of the cylinder. During damper braking, the first engaging portion of the rod abuts against the other end portion of the piston, and an axial compression force acts on the piston between the first engaging portion and the convex portion in pressure contact with the inner circumference of the cylinder.
First Claim
Other Claims data not available
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F16F Class
- 0 % this patent is cited more than
- 3 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 | Apr 4, 2026 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Apr 4, 2030 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 4, 2034 |
