Electricity: circuit makers and breakers – Multiple circuit control – Reciprocating contact
Patent
1976-04-07
1977-11-08
Scott, James R.
Electricity: circuit makers and breakers
Multiple circuit control
Reciprocating contact
58 23R, 58 50R, 58 855, 200 52R, 200163, 200165, H01H 332, H01H 1524, G04C 300
Patent
active
040576981
ABSTRACT:
A switching mechanism for a timepiece comprising a base plate having first and second bores extending therethrough and intersecting, a circuit board having a surface opposite the second bore and having stationary contacts mounted on the surface opposite the second bore, and a contact member disposed within the second bore and dimensioned to slide therein. The contact member has a transverse bore extending therethrough and alignable with the first bore through the base plate, and the contact member has a conductive lower end portion extending from the base plate and terminating at a contact surface for contacting to electrically connect the stationary contacts on the circuit board. A spring biases the contact member downwardly to a lowered position with the contact surface contacting the stationary contacts on the surface board. A timepiece adjusting stem has an end portion dimensioned for insertion into the first bore and into the traverse bore for maintaining the contact member at a raised position with the contact surface thereof raised from the stationary contacts, and the adjusting stem is slideably mounted in a position aligned with the second bore for permitting the adjusting stem to travel in an axial direction thereof between a retracted position with the stem clear of the transverse bore of the contact member and an operative position with the stem inserted into the first bore of the base plate and into the transverse bore of the contact member to maintain the contact member in a raised position. The transverse bore has a tapered converging portion converging in an inward direction of the contact member so that the end portion of the stem bears against the tapered portion as the stem travels from the retracted to the operative position thereby causing the contact member to rise as the tapered portion of the transverse bore climbs the end portion of the stem traveling inwardly of the contact member until the stem extends into the transverse bore to maintain the contact member in a raised position.
REFERENCES:
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patent: 3745758 (1973-07-01), Kuritz
patent: 3783607 (1974-01-01), Feurer
patent: 3846971 (1974-11-01), Ho et al.
patent: 3935700 (1976-02-01), Haaften
patent: 3952176 (1976-04-01), Holder et al.
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patent: 3978296 (1976-08-01), Moriya et al.
patent: 3998044 (1976-12-01), Yamguchi et al.
Hozumi Yoshio
Ikenishi Masataka
Kushida Shozo
Nakagawa Yasuichi
Tsukutani Koichi
Adams Bruce L.
Burns Robert E.
Kabushiki Kaisha Daini Seikosha
Lobato Emmanuel J.
Scott James R.
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