Damper
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 21, 2020
Grant Date -
Oct 18, 2018
app pub date -
Jan 16, 2017
filing date -
Jan 29, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A damper has a shell with a cavity. A rotating shaft is rotatably inserted into the cavity of the shell, the portion of the rotating shaft located in the cavity is provided with external thread; a guiding sleeve with internal thread can move along axially reciprocatingly to attach to the shell cavity, and the internal thread and the male thread of the rotating shaft are screwed together; A guiding structure is provided in the shell cavity. The guiding sleeve is engaged or disengaged with the guiding structure by axial movement, and when the two are disengaged, the guiding sleeve can rotate with the rotating shaft. The guiding sleeve is provided with a one-way valve passage. The one-way valve passage opens when the guiding sleeve is axially disengaged with the guiding structure. When the guiding sleeve moves axially in the reverse direction, the one-way valve passage is closed.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2017 Application Filing Year
- A47K Class
- 734 Applications Filed
- 465 Patents Issued To-Date
- 63.36 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- A47K Class
- 0 % this patent is cited more than
- 5 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jan 21, 2028 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 21, 2032 |
