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US3861277A
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Pressure responsive device having stacked diaphragm assembly
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CA981764A
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Proportional motor actuator circuit
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CA956999A
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Pressure responsive device having stacked diaphragm assembly
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CA938713A
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Delayed cycling control
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Time proportioning electrical control device
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Delayed cycling control
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Fluid fuel burner control with purge
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Safety control for a motor driven compressor
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Boiler control using rod and tube type temperature sensor
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Mechanically actuated transducer equipped with integral gauge for indicating actuating force
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Thermocouple positioning and mounting means
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Fuel burner control using silicon controlled rectifier spark generation and thermocouple actuated reed switch
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High voltage spark generator from low voltage supply
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Fuel burner control utilizing thermocouple triggered silicon controlled rectifier
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Fuel burner control utilizing silicon controlled rectifier
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Low friction hinge connection
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Fluid fuel burner control utilizing slaved silicon controlled rectifiers
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Single and multistage electronic switching control with adjustable operating differential
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High voltage spark generator from low voltage supply
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US3445632A
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Thermostat
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