Electricity: circuit makers and breakers – Multiple circuit control – Reciprocating contact
Patent
1996-12-06
1998-02-10
Gellner, Michael L.
Electricity: circuit makers and breakers
Multiple circuit control
Reciprocating contact
200461, H01H 518
Patent
active
057171777
ABSTRACT:
A common conductor unit for a contact switch includes a conductor body and a movable contact arm. The conductor body includes a U-shaped mounting unit that has upright first and second arm mounting portions and an elongated horizontal connecting portion which interconnects lower end edges of the arm mounting portions. Each of the arm mounting portions has one side which is opposite to the other one of the arm mounting portions and which is formed with a respective horizontal retaining groove. The contact arm is formed as an elongated plate and has a first end portion and a second end portion which is provided with a spring extension unit that extends toward the first end portion. One of the mounting unit and the contact arm is formed with a longitudinal opening to permit extension of the other one of the mounting unit and the contact arm when the contact arm is moved upwardly relative to the conductor body. The first end portion of the contact arm engages the retaining groove on the first arm mounting portion. The spring extension unit engages the retaining groove on the second arm mounting portion and biases the contact arm upwardly. The upper end edge of the second arm mounting portion is formed with a retaining unit to limit upward movement of the contact arm.
REFERENCES:
patent: 2487374 (1949-11-01), Riche et al.
patent: 2594216 (1952-04-01), Roeser
patent: 4209677 (1980-06-01), Brown
patent: 4983794 (1991-01-01), Kokubu
patent: 5089715 (1992-02-01), Kokubu
patent: 5111010 (1992-05-01), Kokubu et al.
patent: 5459295 (1995-10-01), Ohta et al.
Su Tsui-Jong
Tsai Chin-Shan
Friedhofer Michael A.
Gellner Michael L.
Shin Jiuh Corp.
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