Patent ID: 6289787
Filing Date: 2001-09-18
Classification: F15B

Abstract:
A clam shell shaped vane actuator, said actuator comprising:a top case having a top surface comprising a top stiffener, wherein an outermost edge of said top stiffener extends no more than about 20.degree. on either side of a center line of positioned along a central region of said top surface to resist deflection thereof, said top case including an top central section for receiving a vane, and including an upper bore for rotatably receiving a vane shaft;a bottom case having a lower surface comprising a bottom stiffener, wherein an outermost edge of said bottom stiffener extends no more than 20.degree. on either side of a center line of said bottom case, the said lower case including a lower central section for receiving a vane, and including a lower bore for rotatably receiving a vane shaft, said lower case connected to said upper case forming a casing;said top case and said bottom case forming a sealed vessel, said vane attached to said shaft for dividing said sealed vessel into a first pressure chamber and a second pressure chamber, and wherein the shaft may be pivoted between the first pressure chamber and the second pressure chambers; anda first hydraulic port extending through said top case half and a second hydraulic port extending through said bottom case half, in communication with said sealed vessel.