Bi-directional non-linear spring
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 2, 2019
Grant Date -
May 10, 2018
app pub date -
Nov 4, 2016
filing date -
Nov 4, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Loading Importance Indicators... 
Abstract
A linear spring member having an annular region with a first thickness connected in series by cylindrical regions having a second thickness, wherein the first thickness is less than the second thickness. Outer portions of adjacent annular regions are coupled together by a first cylindrical region and inner portions of adjacent annular regions are coupled together by a second cylindrical region such that the effective spring rate of the bi-directional spring device increases symmetrically as it is displaced in either compression or tension.
First Claim
Family
Loading Family data...
International Classification(s)
- 2016 Application Filing Year
- F16M Class
- 1342 Applications Filed
- 928 Patents Issued To-Date
- 69.16 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F16M Class
- 0 % this patent is cited more than
- 6 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 2, 2027 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 2, 2031 |
