GREASE DELIVERY RECEIVER AND NOZZLE HAVING PRESSURIZATION LOCKOUT AND BLEED DOWN CAPTURE
First Claim
1. A grease line coupler comprising:
- a receiver having a body with a normally-sealed entrance opening; and
a nozzle having a body having a normally-sealed exit opening, said body housing an internal ball valve that controls the flow of pressurized lubricating fluid through the nozzle, said ball valve coupled to a rotatable shaft to which an external handle is secured, said valve actuatable with said handle only when the nozzle exit opening is coupled to the receiver entrance opening.
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Accused Products
Abstract
A grease and lubricating oil line coupler includes a nozzle and a receiver which can be intercoupled for grease or lubricating oil delivery. Each component has a normally closed, easily-cleanable, flush-faced mating surface, which prevents the entrance of contaminants into the free ends thereof when decoupled. The nozzle has a handle-operated internal valve with an interlock that is controlled by a quick disconnect slidable collar, which prevents the release of lubricants from the nozzle unless it is coupled to the receiver. Only when the nozzle and receiver are interconnected can the valve be opened; only when the valve is closed can the nozzle be decoupled from the receiver. A high-pressure bleed-off feature returns high-pressure excess lubricant within the coupler to the lubricant storage tank when the handle of the nozzle is returned to its OFF position prior to decoupling it from the receiver.
6 Citations
20 Claims
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1. A grease line coupler comprising:
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a receiver having a body with a normally-sealed entrance opening; and a nozzle having a body having a normally-sealed exit opening, said body housing an internal ball valve that controls the flow of pressurized lubricating fluid through the nozzle, said ball valve coupled to a rotatable shaft to which an external handle is secured, said valve actuatable with said handle only when the nozzle exit opening is coupled to the receiver entrance opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A grease line coupler comprising:
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a receiver having a body with an entrance opening that is sealed by a spring-biased slidable poppet; and a nozzle having a body with an exit opening, which is sealed by a spring-biased slidable annular poppet seat, that rides over an immovable central poppet, said nozzle also having a slidable locking collar that alternatively either latches in a rearward position when the nozzle is decoupled from the receiver or latches the nozzle to the receiver when the nozzle is coupled to the receiver, said body housing an internal ball valve that controls the flow of pressurized lubricating fluid through the nozzle, said ball valve coupled to a rotatable shaft to which an eccentric lockout and a handle are secured, said eccentric lockout preventing actuation of said ball valve when the nozzle is decoupled from the receiver and the locking collar is latched in the rearward position, said nozzle also having a high-pressure bleed-down path to an exterior bleed-down line that returns high-pressure excess lubricant within the coupler to a lubricant storage tank when the handle of the nozzle is turned to its OFF position, but prior to decoupling the nozzle from the receiver. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification