Patent ID: 9441647
Filing Date: 2016-09-13
CPC Classification: F02B,F15B,F16J,Y02T

Claim Text:
1. A pressure piston actuator comprising: a housing defining a chamber and a pathway leading to the chamber; a piston disposed within the chamber, the piston being movable between at least a retracted position and an extended position and dividing the chamber into a plurality of subchambers each defined at least partially by a portion of an upper surface of the piston; a rod connected to the piston by a ball-and-socket joint; and a spring disposed in the chamber to bias the piston, and hence the rod, toward the retracted position; wherein the pathway branches to simultaneously apply fluid to the portion of the upper surface of the piston within each of the plurality of subchambers, which collectively is the application of fluid to generally the entire upper surface of the piston, and wherein fluid introduced into the chamber applies pressure to the piston in an amount that overcomes the bias of the spring, moves the piston, and hence the rod, toward the extended position.