Pressure-cap assembly for terminal bushings

Claim 1

A TERMINAL BUSHING INCLUDING AT LEAST ONE INSULATOR SHELL, AN AXIALLY-EXTENDING TUBULAR CONDUCTOR STUD PASSING THROUGH SAID SHELL AND HAVING A PORTION OF ONE END THEREOF INTERNALLY THREADED, A PRESSURE-CAP ASSEMBLY SURROUNDING THE EXTREMITY OF THE THREADED END OF SAID TUBULAR CONDUCTOR STUD AND HAVING A SOLID THREADED TERMINAL STUD EXTENDING THEREINTO AND THREADED INTO SAID TUBULAR CONDUCTOR STUD, ONE END OF THE PRESSURE CAP ASSEMBLY BEING ADJACENT THE END OF THE INSULATOR SHELL, A PAIR OF ANNULAR SPRING SEATS IN THE PRESSURE CAP ASSEMBLY, ONE OF SAID ANNULAR SPRING SEATS BEING ADJACENT SAID ONE END OF THE PRESSURE CAP ASSEMBLY AND THE OTHER ANNULAR SPRING SEAT BEING DISPOSED AT A PREDETERMINED POSITION ALONG THE LENGTH OF THE SOLID TERMINAL STUD, A PLURALITY OF CIRCUMFERENTIALLY-DISPOSED COMPRESSION SPRINGS INTERPOSED BETWEEN SAID PAIR OF ANNULAR SPRING SEAT AND TENDING TO FORCE THE OTHER ANNULAR SPRING SEAT OUTWARDLY, A SPRINGSUPPORT COLLAR THREADED ON AN INTERMEDIATE PORTION OF SAID SOLID TERMINAL STUD AND DISPOSED OUTWARDLY OF SAID OTHER ANNULAR SPRING SEAT FROM SAID COMPRESSION SPRINGS AND RESISTING THE OUTWARD FORCE EXERTED THEREON, THE SPRING SUPPORT COLLAR HAVING ITS POSITION ADJUSTABLE AND PERMITTING THE TENSION OF THE COMPRESSION SPRING TO BE ADJUSTED WITHOUT REQUIRING MOVEMENT OF THE PRESSURE CAP ASSEMBLY WITH RESPECT TO THE ADJACENT END OF THE INSULATOR SHELL.