Multilayer wind spring for a display support and lifting support thereof
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 7, 2020
Grant Date -
N/A
app pub date -
Sep 4, 2017
filing date -
Jul 7, 2017
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A multilayer wind spring for a display support and a lifting support thereof, the multilayer wind spring is formed by tightly attaching and winding multiple elastic metal sheets, each of the elastic metal sheets comprises: a stretching connection portion which is not involved in winding and unwinding and is always kept in an initial state, a movable sheet portion which is involved in winding and unwinding, and an unmovable wound portion which is not involved in stretching and is always kept in a wound state, the stretching connection portion, the movable sheet portion, and the unmovable wound portion are formed integrally and sequentially arranged in an unwinding direction, and the elastic metal sheets of the unmovable wound portions are arranged fixedly relative to one another.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2017 Application Filing Year
- F16M Class
- 1248 Applications Filed
- 858 Patents Issued To-Date
- 68.75 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- F16M Class
- 46.90 % 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 7, 2028 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 7, 2032 |