Recoil mechanism (USH0000217)
Original Publication Date: 1987-Feb-03
Included in the Prior Art Database: 2008-Mar-23
US Statutory Invention Registration (SIRs)
Related DocumentsPatent/Patent Application:
A hydraulic recoil mechanism, which may be used as a shock absorbing device ontrols both the recoil and counter-recoil motion of a cannon. Main recoil energy is dissipated via a movable cylindrical piston rod which pumps hydraulic fluid through a series of orifices into a primary chamber and is subsequently metered through an orifice effected by the traveling piston head and a fixed variable geometry control rod. A buffer spear arrangement integrated at the opposing end of the control rod dissipates final counter-recoil energy via a metering cavity contained in the returning piston. The piston rod assembly carries a ring-like floating piston which, upon recoil, closes a by-pass orifice and, upon counter-recoil, opens the by-pass orifice. A temperature compensator mechanism is also integrated into the system to accommodate thermal expansion of the fluid during sustained operation.