Patent ID: 9593696
Date: 2017-03-14
CPC Classifications: B64C,F15B

Claim:
1. A rotary actuator system comprising: a first housing defining a first arcuate chamber comprising a first cavity, a first fluid port in fluid communication with the first cavity, and an open end, wherein the first housing defining the first arcuate chamber is formed from a single piece of material; a rotor assembly rotatably journaled in said first housing and comprising a rotary output shaft and a first rotor arm extending radially outward from the rotary output shaft; an arcuate-shaped first piston disposed in said first housing for reciprocal movement in the first arcuate chamber through the open end, wherein a first seal, the first cavity, and the first piston define a first pressure chamber, and a first portion of the first piston contacts the first rotor arm; a first fluid line coupled to the first fluid port; a high pressure fluid line; a low pressure fluid line; a central pressure source coupled to the high pressure fluid line; and a servo valve positioned between the central pressure source and the hydraulic actuator and being controllable to selectively connect the first fluid line to the high pressure fluid line and the low pressure fluid line to control movement of the hydraulic actuator.