F - Mech Eng,Light,Heat,Weapons – 16 – F
Patent
F - Mech Eng,Light,Heat,Weapons
16
F
267/88
F16F 9/48 (2006.01)
Patent
CA 1058230
SELF ADJUSTING ENERGY ABSORBER ABSTRACT OF THE DISCLOSURE A shock absorber including a housing having a ram slid- ably extending therefrom. A pair of concentric control sleeves divide the housing into inner and outer fluid cham- bers, and a piston is slidably received within the inner chamber. The inner sleeve has an axially aligned row of openings therein, and also has an elongated groove formed in the outer periphery thereof, which groove is circumfer- entailly spaced from the row of openings. The inner and outer sleeves have opposed conical surfaces forming a nar- row clearance space therebetween. A spring coacts between the housing and the outer sleeve for urging same axially in a direction whereby the openings in the inner sleeve are effectively closed, as by maintaining the narrow space at a minimum dimension. When a shock load is imposed on the ram causing the piston to move inwardly within the in- ner chamber, the fluid therein is pressurized and flows through the openings into the narrow space. The pressure of the fluid reacts against the conical surface on the outer sleeve and causes it to be axially displaced in opp- sition to the urging of the spring, thereby increasing the dimension of the narrow space whereby the fluid flows there- through into-the adjacent groove, from which it is dis- charged into the outer chamber.
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