Wide angle thread and method of forming same

Claim 1

THE COMBINATION OF MALE AND FEMALE PIPE MEMBERS TERMINALLY THREADED WITH INTERENGAGEABLE MATING PIPE THREADS HAVING A STANDARD TAPER FOR PIPE THREADS, SAID INTERENGAGEMENT BEING FULL AND COMPLEMENTARY ALONG THE INTERFACE OF THE FLANKS AND AT THE ROOTS AND CRESTS OF THE THREADS IN POSITIVE SEALED RELATIONSHIP UNDER FORCES ACTING ON THE THREAD FLANKS THROUGHOUT THE LENGTH OF THE THREAD INTERENGAGEMENT, SAID FLANK INTERFACES DEFINING CROSS-SECTIONALLY OF THE THREADS A LINE CONTOUR IN WHICH THE FLANK PORTIONS THEREOF ARE STRAIGHT AND ARRANGED ALTERNATELY IN TWO GROUPS IN EACH OF WHICH THE FLANK PORTIONS ARE EQUAL AND PARALLEL WITH THE ENDS OF THE FLANK PORTIONS OF ONE GROUP INTERSECTING THE ENDS OF ALTERNATE FLANK PORTIONS OF THE OTHER GROUP AT IDENTICAL INCLUDED OBTUSE ANGLES TO DEFINE SHAPE CRESTS AND ROOTS FOR BOTH MALE AND FEMALE THREADS WITH SAID FORCES BEING EQUAL AND OPPOSITE UPON THE MATING THREADS AT THEIR INTERFACE AND DIVIDED BETWEEN OPPOSITE FLANKS OF EACH THREAD, THE RESOLUTION OF SAID FORCES BEING SUCH THAT THE RADIAL COMPONENT THEREOF EXERTED ON EACH FLANK IS SUBSTANTIALLY GREATER THAN THE AXIAL COMPONENT THEREOF.