Shock-absorbers and the like

Claim 1

AN ASSEMBLY FOR ABSORBING MECHANICAL SHOCKS AND DAMPING VIBRATIONS COMPRISING A RESILIENT ELEMENT HAVING A PERIPHERAL PORTION, A HOUSING SUPPORTING THE PERIPHERAL PORTION OF THE RESILIENT ELEMENT, ATTACHING MEANS FOR SECURING SAID PERIPHERAL PORTION TO SAID HOUSING, A SPRING DISPOSED BETWEEN A CENTRAL AREA ON SAID RESILIENT ELEMENT AND A PART OF THE HOUSING SO AS TO MODIFY THE DEFLECTING CHARACTERISTICS OF SAID RESILIENT ELEMENT, A LOAD TRANSMITTING MEMBER, AND ATTACHING MEANS FOR SECURING SAID MEMBER TO A CENTRE PART OF SAID RESILIENT ELEMENT, ONE OF SAID ATTACHING MEANS BEING ADJUSTABLE SO AS TO APPLY AND MAINTAIN RADIAL COMPRESSION TO SAID ELEMENT WHETHER OR NOT THE LOAD IS APPLIED TO IT BY SAID LOAD TRANSMITTING MEMBER, SAID RESILIENT ELEMENT HAVING A HOLLOW THICKENED PORTIONED OVER A LIMITED AREA THEREOF, AND SAID ONE OF SAID ATTACHING MEANS COMPRISING RIGID ABUTMENT FACES BETWEEN WHICH SAID HOLLOW THICKENED PORTION IS DISPOSED, AND VALVED MEANS FOR INTRODUCING FLUID UNDER PRESSURE INTO AND WITHDRAWING IT FROM SAID HOLLOWED THICKENED PORTION THEREBY VARIABLY TO COMPRESS THE MATERIAL OF SAID RESILIENT ELEMENT AT SAID LIMITED AREA.