Patent ID: 6959913
Filing Date: 2005-11-01
Classification: F15B,Y10T

Abstract:
1. A system: an actuator, said actuator having a rotatable shaft and a set of pistons slidable in a cylinder, each of said pistons having a set of teeth for engaging with a set of teeth on the rotateable shaft so that displacement of the pistons toward or away from each other produces at least a partial rotation of the rotateable shaft; each of said set of pistons having a skirt, each of said skirts carrying a first wear member, a lubricant and a sealing member, said sealing member comprising a resilient member for preventing flow of fluid therepast and for maintain an outer wear member in contact with the cylinder; said lubricant for maintaining an on-the-go lubricated state between the cylinder and the wear member to allow for repeated displacement of said pistons without having to replace the sealing member thereon.