H - Electricity – 04 – M
Patent
H - Electricity
04
M
306/307, 379/99
H04M 1/26 (2006.01) H01H 13/00 (2006.01) H04M 1/23 (2006.01)
Patent
CA 1088689
Abstract of Disclosure: A slide included in the push button set of a telephone instrument reciprocable to actuate a number of contact devices in the set. Each contact device consists of a pair of movable contact arms and belonging fixed contacts. The slide is disposed between two oppositely situated contact devices and consists of an arm having two oppositely directed wedge-shaped members. Each member has a longitudinal midpart and is provided on each side of the midpart with a camming surface. The reciprocating action of the slide is actuated by a depressed button on the set, a camming surface then touches a flange on a movable contact arm thus establishing a contact between this arm and the belonging fixed contact. The camming surfaces on both sides of the midpart are displaced relatively each other to give a sequential contact action.
296149
Marks & Clerk
Telefonaktiebolaget Lm Ericsson
LandOfFree
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