US 12,449,216 B2
Fluid power actuator utilizing a screw assembly
Thomas James DeSalvo, Finksburg, MD (US)
Assigned to Textron Systems Corporation, Hunt Valley, MD (US)
Filed by Textron Systems Corporation, Hunt Valley, MD (US)
Filed on Jun. 16, 2023, as Appl. No. 18/210,864.
Prior Publication US 2024/0418466 A1, Dec. 19, 2024
Int. Cl. F41A 9/87 (2006.01); F15B 15/14 (2006.01); F16H 25/22 (2006.01)
CPC F41A 9/87 (2013.01) [F15B 15/1447 (2013.01); F15B 2015/1495 (2013.01); F16H 25/2214 (2013.01)] 20 Claims
OG exemplary drawing
 
1. Loading apparatus, comprising:
a base;
a loading assembly having a first end coupled with the base and a second end constructed and arranged to carry a load; and
a fluid power actuator including:
a fluid power actuator housing coupled with the base,
a piston assembly coupled with the second end of the loading assembly, the piston assembly being constructed and arranged to move relative to the fluid power actuator housing in response to changes in fluid pressure within the fluid power actuator housing,
a screw assembly coupled with the fluid power actuator housing and the piston assembly, the screw assembly being constructed and arranged to control movement of the piston assembly relative to the fluid power actuator housing,
a load sensor coupled with the fluid power actuator housing and a screw of the screw assembly,
a fluid pumping assembly coupled with the fluid power actuator housing, and
an electronic controller coupled with the load sensor and the fluid pumping assembly, the electronic controller being constructed and arranged to receive a sensor signal from the load sensor and operate the fluid pumping assembly to provide the changes in the fluid pressure based on the sensor signal.