Acceleration sensitive shock absorber valve

Claim 1

In a pressurized air-hydraulic shock absorber, the combination comprising: cylinder means, having a closed end and an open end; means attached to said cylinder means for the connection thereof to a first predetermined utilization apparatus; a first wall located a predetermined intermediate position along the length of said cylinder means in such manner as to form a cylindrical chamber between it and the aforesaid closed end thereof; a metering orifice located in the center of said first wall; piston means, having a head and a housing extending therefrom, telescopically mounted for slidable disposition within said cylinder means; a plurality of ports disposed through the head of said piston means; a second wall located within the housing of saiD piston means in such manner as to form a piston chamber between it and the head thereof; a metering pin means, having an elongated barrel which is configured in such predetermined manner as to have a first outside diameter at one end thereof that provides a slip-fit with the inside diameter of the aforesaid metering orifice when located therein and a predetermined second diameter at the other end thereof that is smaller than said first outside diameter, connected to one side of the head of said piston means in such manner that the smaller diameter end thereof extends through said metering orifice and a predetermined distance into said cylindrical chamber; a continuous bore extending through the head of said piston and the entire length of said metering pin means; a hollow pipe means, one end of which is connected to the other side of the head of said piston means in such manner as to cause it to extend a predetermined distance into said piston chamber and effect a continuous passageway between the hollow thereof and the aforesaid bore; means connected to the other end of said hollow pipe means for effecting the closure thereof; passage means extending through the wall of said hollow pipe means; control means, having a mass that is responsive to predetermined accelerations, slidably mounted in contiguous disposition with said hollow pipe means in such manner that it is movable into and out of abutment with the head of said piston means and will close and variable open the aforesaid passage means when so positioned, respectively; means, having a predetermined compression rate, effectively mounted between the end closure means of said hollow pipe means and said control means for resiliently urging said control means toward the position of abutment with the head of said piston means and thereby effect closure of the aforesaid passage means; hydraulic fluid means disposed so as to partially fill said cylindrical chamber to a predetermined level and completely fill said piston chamber, the ports extending through the head of said piston means, and the space between the head of said piston means and the aforesaid first wall of said cylinder means; means connected to said cylinder means and disposed in slidable contact with the external surface of the housing of said piston means for effecting a hydraulic fluid seal therebetween when said piston means is telescopically disposed therein; and means connected to said piston means for the connection thereof to a second predetermined utilization apparatus.