Electricity: circuit makers and breakers – Multiple circuit control – Pivoted contact
Patent
1987-11-06
1989-03-21
Scott, J. R.
Electricity: circuit makers and breakers
Multiple circuit control
Pivoted contact
200437, 200438, 200339, H01H 506, H01H 2142
Patent
active
048145548
ABSTRACT:
A switch mechanism having redundant spring mechanism for use in rocker type switches. The switch mechanism has a housing which has at least an opening on a top end and a pivot mechanism on two opposing sides thereof. A pair of electrical contacts is located in a bottom end of the housing and an electrically conductive armature establishes an electrical connection between the electrical contacts. A movable rocker extends through the opening in the top end of the housing and has at least first and second opposed sides which have a structure for engaging the pivot mechanism on the housing. A one-piece plunger assembly has at least one bottom end for contacting the armature and a top end rides in a recess in the rocker. At least two coil springs are located between the top end of the plunger assembly and a bottom of the recess. One of the springs is sufficient to cause the plunger assembly to move the armature when the rocker is moved from a first position to a second position.
REFERENCES:
patent: 3413430 (1968-11-01), Sharples
patent: 3536872 (1970-10-01), Gilardenghi
patent: 3935411 (1976-01-01), Ford
patent: 4335287 (1982-06-01), Aschenbach et al.
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