G - Physics – 08 – C
Patent
G - Physics
08
C
26/120, 340/137.
G08C 21/00 (2006.01) H01H 35/02 (2006.01)
Patent
CA 1189929
ABSTRACT OF THE DISCLOSURE A molded cup-shaped dielectric and a cup-shaped conductor are pressed together in telescoping relationship at an interference fit, whereby the two cup-shaped members comprise an integral dimensionally stable sealed enclosure for a contact member movable axially therein for selectively making or breaking an electrical connection between the cup- shaped conductor and a second conductor extending axially through and sealed within the base of the cup-shaped di- electric. The axially outer surfaces of the base of the cup- shaped dielectric and the second conductor comprise electri- cal contacts for a gravity actuated switch adapted to be selectively and releasably confined between a pair of axially spaced contacts within a container for the switch. The overall axial dimension between the axially outer sur- faces is preselected without recourse to close axial tolerances in the fabrication of the cup-shaped members, merely by telescoping the cup-shaped members coaxially to- gether until the preselected axial dimention is obtained. In one embodiment the cup-shaped dielectric,has a cylindrical base and a coaxial diametrically reduced cylindrical portion extending from the base to an upper opening. The conductor- is telescoped over the diametrically reduced portion in fluid sealing relationship, whereby said enclosure has an interior cylindrical surface of optimum diameter for the axially movable contact member comprising a metallic ball also of optimum diameter for any given size switch.
452148
Gowling Lafleur Henderson Llp
U.s. Plastics Corporation
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