Pushbutton interlock
First Claim
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1. A manually operated switch assembly with interlock mechanism, comprising:
- a housing having first and second arcuate surface portions at oppositely facing positions;
first and second pushbuttons within the housing;
an interlock in the housing and having complementary first and second arcuate surface portions rotatably engaging the corresponding first and second surface portions of the housing;
the interlock also having one surface engaged by the first pushbutton and another surface engaged by the second pushbutton; and
the interlock being rotatable within and between the complementary first and second arcuate surface portions in response to activation of the first pushbutton to block actuation of the other pushbutton.
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Abstract
A unique interlock mechanism for two pushbuttons or other linearly operated devices, requiring no mechanical linkages or complex assemblies. The interlock mechanism essentially comprises an interlock member having first and second restraining portions disposed within a housing so that when one of the pushbuttons is operated, the interlock member rotates positioning itself under the second pushbutton, interfering with and making it impossible to be operated.
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Citations
2 Claims
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1. A manually operated switch assembly with interlock mechanism, comprising:
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a housing having first and second arcuate surface portions at oppositely facing positions; first and second pushbuttons within the housing; an interlock in the housing and having complementary first and second arcuate surface portions rotatably engaging the corresponding first and second surface portions of the housing; the interlock also having one surface engaged by the first pushbutton and another surface engaged by the second pushbutton; and the interlock being rotatable within and between the complementary first and second arcuate surface portions in response to activation of the first pushbutton to block actuation of the other pushbutton. - View Dependent Claims (2)
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Specification