Two-stage submersible actuators
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 14, 2014
Issued Date -
N/A
app pub date -
Dec 5, 2008
filing date -
Dec 5, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention provides an improved two-stage actuator (20) that broadly includes: a first cylinder (21); an intensifier piston (22) mounted in the first cylinder for sealed sliding movement therealong, the intensifier piston having a large-area surface (26) exposed to ambient pressure, and having a small-area surface (30); a second cylinder (23) having an end wall (36); an actuator piston (24) mounted in the second cylinder for sealed sliding movement therealong; an actuator rod (39) connected to the actuator piston for movement therewith and having an intermediate portion sealingly penetrating the second cylinder end wall; the actuator piston having a large-area surface (27) and a small-area surface (37), an intermediate chamber (35) communicating the intensifier piston small-area surface with the actuator piston large-area surface; and an incompressible fluid in the chamber; whereby ambient pressure (i.e., the pressure of sea water at the depth at which the device is submerged) will create pressure in the intermediate chamber for urging the actuator piston to move toward the second cylinder end wall.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2008 Application Filing Year
- B60T Class
- 556 Applications Filed
- 383 Patents Issued To-Date
- 68.89 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 5 Citation Count
- B60T Class
- 8.05 % this patent is cited more than
- 11 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 14, 2026 |
