Back to results
US 4,075,929 AGranted
Three stage thrusting device
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorPaul F. Peterson
Life of this patent
Estimating the term…
Abstract
A telescopic fluid ram or thruster utilizing pressurized gas and having an inner and outer piston that slides within a cylindrical bore including a central probe which is tapered and extends into the bore of the inner piston where it will cause the inner piston to move under high pressure while the gas escaping from around the tapered area produces a holding force to hold the outer piston in place until the inner piston is fully extended, at which time the outer piston will extend under a reduced pressure.
Claims4
A three stage thrusting device comprising:
- a housing;
- first and second driving means telescopally mounted within the housing and adapted to extend from one end thereof, said first driving means positioned within said second driving means;
- means for sealing one end of the housing;
- probe means attached to the sealing means and extending into the first first driving means wherein said probe means is tapered and adapted to mate in a sealed relationship with a collar portion of said first driving means;
- port means in the end seal means and extending through the probe means for allowing fluid forces to act upon the said first and second means.
2 more elements
Dependencies are inferred from the claim text.