H - Electricity – 01 – B
Patent
H - Electricity
01
B
347/48
H01B 3/40 (2006.01) H05K 3/40 (2006.01) H01R 4/30 (2006.01) H01R 13/71 (2006.01)
Patent
CA 1089971
ABSTRACT OF THE DISCLOSURE A switch device for a printed circuit board and the resulting circuit structure including a mounting stud with a pilot threaded section and a working threaded section axially separated by an unthreaded shank and means for mounting the stud to a printed circuit board; and a hollow shell having a locknut mounted on its interior. The distance between the two threaded sections is greater than the interior threaded axial length of the locknut to captivate the shell on the stud. The mounting stud is permanently secured to the circuit board in a hole formed in the board passing adjacent and electrically connected to a conductor on one surface of the board and close to but spaced from a conductor on the opposite surface of the board. The assembled shell with locknut is screwed onto the pilot end of the stud, the threaded portion of the nut passing the pilot threaded section and freely is moved to the working threaded section where continuing rotation causes the locknut thread to engage and be worked down to the board surface. Screwing it tightly against the surface causes electrical contact to be established between the conductors on opposite surfaces of the board through the enlarged axial end of the shell, stud and soldered connection. If the contact is not desired, it is unscrewed a couple of turns to lift its axial end off the conductor spaced from the stud.
295696
Abbott Screw & Mfg. Co.
Borden Ladner Gervais Llp
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