Shock absorber, related methods and apparatuses
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 13, 2017
Grant Date -
Oct 16, 2014
app pub date -
Apr 9, 2014
filing date -
Apr 10, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A shock absorber (29) for downhole use comprises an elongate, hollow member defined by a series of mutually aligned, plastically deformable perforated members (38) having aligned perforations that define the hollowness of the elongate, hollow member that are spaced from one another in the direction of elongation by respective relatively rigid spacer members (39) that are secured to the perforated members. The elements of each pair of perforated members (38) of the series are so spaced from one another by one or more of the spacer members (39) such that on compression of the shock absorber (29) the perforated members (38) deform plastically to a lesser extent in regions at which the spacer members (39) are secured than at other regions. The arrangement of the perforated members (38) and the spacer members (39) causes compression to occur substantially parallel to the length of the shock absorber (29).
First Claim
Other Claims data not available
Family
International Classification(s)
- 2014 Application Filing Year
- F16F Class
- 842 Applications Filed
- 712 Patents Issued To-Date
- 84.57 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 3 Citation Count
- F16F Class
- 30.41 % this patent is cited more than
- 8 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 | Dec 13, 2024 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 13, 2028 |
