VALVE-FREE GAS SPRING, AND APPARATUS FOR PRESSURIZING SUCH SPRING

摘要

This invention relates to a gas spring which is charged in a pressurized medium, which has no valve and consequently can be of a very small size. It is comprised of a body (7) which forms a chamber (8) wherein is housed an annular pressure retaining body (19) which contains a rod (9) susceptible of exerting a motion to compress the chamber and withstanding the chamber reaction by opposing said motion. The apparatus for pressurizing the gas spring is comprised of two bodies sealed between each other (1 and 3) which are pressurized, and by means of a piston (2) linked to one of the parts, the annular pressure retention body (19) is introduced into the chamber (8) till a metal ring forms the anti-return stop. Industrial application to the fabrication of valve-free gas springs.