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US 4,901,975 AGranted
Fluid delivery equipment
AssigneeNomix Manufacturing Company Limited
InventorsDavid C. Gill, Gary K. Pressey
Life of this patent
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AssigneeNomix Manufacturing Company Limited
InventorsDavid C. Gill, Gary K. Pressey
Estimating the term…
Two components, such as a support tube and handset of a herbicide delivery lance, are interconnected in a manner which provides an electrical connection between leads in the tube and the handset respectively. Fluid communication is also provided between a flexible tube in the tube and a passage of the handset. The leads on the tube are connected to two terminal plates situated on the outer surface of the tube. These terminal plates move into positions opposite bosses on a sleeve provided on the handset when the tube is pushed into the sleeve. Screws, engaging bushes accommodated in the bosses, are then screwed into contact with the terminal plates to secure the tube in position. The screws also complete the electrical circuit between the leads. One of the components includes a valve which includes an operating member. Displacement of the operating member against the action of a spring not only opens the valve, but also actuates an electrical switch.
A coupling between first and second components which are each provided with electrical leads and fluid passageway for conveying a liquid, the components being telescopically engageable with each other to bring the respective fluid passageways into communication with each other, the first component being provided with an electrically conductive element to which the lead of the first component is connected, the second component having an electrically conductive internally screwthreaded bush, to which the lead of the second component is connected, the components being secured together in the engaged position by an electrically conductive screwthreaded fastener which makes electrical contact with both the electrically conductive element and the electrically conductive bush thereby to connect the leads to each other.
Dependencies are inferred from the claim text.