Patent ID: 6575678
Filing Date: 2003-06-10
Classification: B60P,F15B

Abstract:
A locking cylinder, comprising:a screw shaft having a head and a threaded rod, wherein the head has a radius larger than the rod, the head having a top surface; a nut in threaded engagement with the threaded rod; a piston, having a hollow center, connected to the nut, the piston being adapted to receive the threaded rod when the nut screws onto the screw shaft; a substantially cylindrical rod, with one end connected to the piston, wherein the screw shaft, the nut, the piston, and the rod share a longitudinal axis, wherein the top surface of the head is substantially perpendicular to the longitudinal axis; and a generally cylindrical housing surrounding the screw shaft, the nut, the piston and the rod, wherein the rod extends out of one end of the housing along the longitudinal axis, wherein the longitudinal axis of the housing is the same as the longitudinal axis, wherein one end of the housing has an inner wall with a radius substantially the same as a radius of the rod, and wherein an elongated portion of the center of the housing has an inner wall with a radius substantially the same as a radius of the piston, and wherein the other end of the housing has an inner wall with a radius substantially the same as the head of the screw shaft.