Apparatus for investigating earth formations

Claim 1

IN AN EARTH FORMATION FLUID SAMPLER, A PROJECTILE COMPRISING A BODY ADAPTED TO BE IMPELLED TOWARD A SELECTED EARTH FORMATION AND HAVING A FRIST CHAMBER EXTENDING THROUGH SAID BODY AT AN ANGLE TO A CENTRAL AXIS FOR SAID BODY AND A SECOND CHAMBER FLUIDLY CONNECTED TO SAID FIRST CHAMBER AND EXTENDING ALONG SAID CENTRAL AXIS SAID BODY INCLUDING A FORWARD EXTREMITY HAVING A FRANGIBLE WALL PORTION BROKEN IN RESPONSE TO IMPACT WITH EARTH XXXXXATION MATERIAL TO PROVIDE AN OPENING FLUIDLY CONXXXXXD TO THE FORWARD EXTREMITY OF SAID FIRST CHAMBER, AND XXXXXBODY INCLUDING ANOTHER FRANGIBLE WALL PORTION XXXXXEN IN RESPONSE TO IMPACT OF EARTH FORMATION MATERIAL XXXXXNG THROUGH SAID FRIST CHAMBER TO PROVIDE AN OPENING XXXXXE REARWARD EXTERMITY OF SAID FIRST CHAMBER; AND XXXXXMEANS DISPOSED AT A LOCATION IN THE FLUID PATH FOR XXXXXITTING A FLUID SAMPLE TO FLOW THROUGH SAID SECOND XXXXXBER WHILE EXCLUDING SOLID FORMATION MATERIAL.