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US 5,296,747 AGranted
Diaphragm operated electrical polarity reversing switch
OwnerBenjamin F. Rabitsch, Douglas G. Rabitschinventors
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OwnerBenjamin F. Rabitsch, Douglas G. Rabitschinventors
Estimating the term…
A reversing switch and more particularly a diaphragm operated electrical polarity reversing switch which has general utility but in the application the reversing switch is disclosed for use in combination with a vehicle mounted spray device including a discharge nozzle which may be used for applying chemicals, liquid fertilizers and other liquids such as when applying such materials alongside of roadways to effectively apply liquid throughout the width of the road right-of-way in which spray nozzles are mounted adjustably on a pivotal arm-type support assembly at the right front of a vehicle and a control arrangement is oriented in the cab of the vehicle to enable the vehicle operator to control the spray apparatus. A diaphragm is communicated with a pressurized supply line with the diaphragm being responsive to pressure in the supply line together with a control valve to direct flow to one of a plurality of different sized nozzles in order to maintain a constant pressure of liquid at each nozzle with any temporary variation in the pressure caused by switching from one nozzle to another being promptly corrected thus providing a constant flow rate and constant width of discharge of liquid from the nozzle.
A pressure sensitive electrical polarity reversing switch comprising a condition sensing movable member, an electrical circuit including primary contact means connected with a power source, spaced secondary contact means connected with an electrically driven means having a output driven in opposite directions depending upon the polarity of electrical power supplied to said electrically driven means, said condition sensing movable member completing an electrical circuit between said primary contact means and one of said spaced secondary contact means to drive said electrically driven means in a first direction in response to one condition and completing an electrical circuit to the other of said spaced secondary contact means in response to another condition, said spaced secondary contact means including a neutral area therebetween to interrupt the electrical circuit to said secondary contact means when the condition sensing movable member is moving between said secondary contact means to stabilize said electrically driven means when said condition sensing movable member has been moved to a predetermined position in response to the condition being sensed.
Dependencies are inferred from the claim text.