Combination spring-piston vibration isolator

Claim 1

A VIBRATION ISOLATOR FOR ABSORBING VIBRATION BETWEEN TWO RELATIVELY MOVING ELEMENTS COMPRISING LOAD MEANS FOR MOUNTING A LOAD; A BASE MEMBER ENCOMPASSING SAID LOAD MEANS; FIRST, SECOND, THIRD, AND FOURTH RESILIENTLY DEFORMABLE SUPPORTS, EACH SUPPORT BEING POSITIONED BETWEEN AND INTERCOUPLING WITH SAID LOAD MEANS AND SAID BASE MEMBER, SAID FIRST AND THIRD SUPPORTS BEING OPPOSITELY DISPOSED RELATIVE TO EACH OTHER AND MUTUALLY SPACED ALONG A FIRST LINE, SAID SECOND AND FOURTH SUPPORTS BEING ADJACENT BOTH SAID FIRST AND THIRD SUPPORTS AND BEING SIMILARLY OPPOSITELY DISPOSED RELATIVE TO EACH OTHER ALONG A SECOND LINE NORMAL TO SAID FIRST LINE, EACH OF SAID SUPPORTS HAVING A CAVITY; SAID LOAD MEANS HAVING FIRST AND SECOND MUTUALLY INDEPENDENT ORIFICED PASSAGES, SAID FIRST PASSAGE INTERCONNECTING BETWEEN AND COMMUNICATING WITH THE CAVITIES OF SAID FIRST AND THIRD FLEXIBLE SUPPORTS, AND SAID SECOND PASSAGE SIMILARLY INTERCONNECTING BETWEEN AND COMMUNICATING WITH THE