Patent ID: 8251354
Filing Date: 2012-08-28
Classification: F16F

Abstract:
1. A gas spring in which a rod body having a base end side inserted into a cylinder body and capable of movement into and out of the cylinder body is urged in a direction outwardly of the cylinder body by the pressure of a gas sealed inside the cylinder body, wherein the gas spring includes a cover body having a substantially cylindrical shape, and wherein a base end portion of the cover body is connected to a distal end portion of the rod body that projects outside of the cylinder body, and wherein a distal end portion of the cover body has a head end portion of the cylinder body received inside the cover body, and wherein the cylinder body has a cover member, having a substantially cylindrical shape and formed at a bottom end portion, and wherein the gas spring further comprises a stopper member attached to the distal end of the cover body, the stopper member being substantially cylindrical in shape and having an opening at an end thereof, wherein when the rod body is projected to a maximum extent from inside the cylinder body, the cover member has an end opening opposed to the distal end portion of the cover body, and wherein the end opening has an inside diameter larger than an outside diameter of the cylinder body, and wherein when the rod body is contracted to a maximum extent into the cylinder body, the cover member blocks the end opening of the stopper member.