Rotary machine

Claim 1

IN A ROTARY MACHINE COMPRI/SING A ROTOR MEMBER, A HOUSING MEMBER INCLUDING THEREIN A PLURALITY OF CHAMBERS FOR COMPRESSING A FLUID INTRODUCED THEREIN, SAID ROTOR MEMBER BEING DISPOSED IN THE INTERIOR OF SAID HOUSING MEMBER TO DEFINE SAID PLURALITY OF CHAMBERS WITH SAID HOUSING AND CAPABLE OF BEING DRIVEN ECCENTRICALLY TO THE CENTRAL AXIS OF SAID INTERIOR OF SAID HOUSING, SAID HOUSING MEMBER MEMBER AND SAID ROTOR MEMBER HAVING RESPECTIVELY AN INTERNAL CROSS-SECTIONA PROFILE AND AN EXTERNAL CROSS-SECTIONAL PROFILE DETERMINED ON THE BASIS OF AN N-PLE EPITROCHOIDAL CURVE, AND AN APEX SEAL STRUCTURE BETWEEN ANY PAIR OF ADJACENT CHAMBERS FOR HERMETICALLY SEALING THEREBETWEEN, THE COMBINATION OF SAID SEAL STRUCTURE HAVING A PROFILE BASED UPON AN ISOSCELES TRIANGLE SUBSTANTIALLY SMALLER IN DIMENSION THAN THE RADIUS VECTOR OF SAID N-PLE LOBED EPITROCHOIDAL CURVE, AND INCLUDING AT LEAST A PAIR OF LONGITUDINAL RIDGE PORTIONS; SAID HOUSING MEMBER HAVING THE INTERNAL CROSSSECTIONAL PROFILE FOLLOWING A CURVE PREPARED BY MOVING AN ISOSCELES TRIANGLE IDENTICAL TO SAID ISOSCELES TRIANGLE FOR SAID SEAL STRUCTURE, ALONG SAID EPITROCHOIDAL CURVE IN SUCH A MANNER THAT TWO VERTICES FOR THE BASE OF THE MOVING TRIANGLE MOVE ALONG A MODIFIED CURVE SPACED IN PARALLEL FROM SAID EPITROCHOIDAL CURVE A PREDETERMINED MINUTE LENGTH WHILE THE REMAINING VERTEX DEPICTS SAID EPITROCHOIDAL CURVE TO DETERMINE SAID MODIFIED CURVE, AND RADIALLY DISPLACING SID MODIFIED CURVE IN PARALLEL THERETO BY A LENGTH EQUAL TO A DISTANCE BETWEEN THE EXTREMITY OF SAID RIDGE PORTION OF SAID SEAL STRUCTURE AND THE BASE OF THE TRIANGLE FOR SAID SEAL STRUCTURE AND THE BASE MEMBER HAVING THE EXTERNAL CROSS-SECTIONA PROFILE DETERMINED BY AN ENVELOPE FORMED OF SAID CURVE DETERMINING SAID INTERNAL CROSS-SECTIONAL PROFILE OF SAID HOUSING MEMBER; SAID SEAL STRUCTURE BEING DISPOSED AT EACH APEX OF THE ROTOR MEMBER TO HERMETICALY CONTACT THE HOUSING MEMBER.