Hamilton Sundstrand Corporation

Zynon Technologies, LLC

Zynon Technoologies, LLC

Ratier Figeac

Floyd Kent Matlack

Brian E King

Adam Eckenroth

Paul A Carvalho

Jay S Tourigny

Christian Fages

An injection device () injects a dispensable fluid material (), for example, a liquid sealant, into refrigerant lines of an air conditioning or refrigeration pressurized system, by utilizing the pressure difference between high and low pressure zones of the pressurized system. The device comprises a tube () which contains the dispensable fluid material () and is closed by an outlet valve (). A movable member () houses a spring-loaded check valve () and is disposed downstream of and spaced from the outlet valve (). The movable member () is movable within a passageway () formed in an outlet tube connector (). Upon being connected to a service port () of a pressurized system by an installation nut (), movable member () is forced into engagement with the outlet valve () to open it to dispense fluid material () into service port ().

Fluid material injection device

A fluid injection device () for injecting a dispensible fluid material (), e.g., a liquid sealant, into refrigerant lines of an operating air conditioning or refrigeration system or the like, includes a tube () having at its outlet end a fluid outlet valve () is closed by a valved plug () to provide therebetween an airlock chamber () containing a dried inert gas which prevents reaction, e.g., polymerization, of any liquid sealant which has leaked past the fluid outlet valve () prior to use of the device. The device () is used by removing the valve plug () just prior to use and connecting the outlet valve () to a low pressure zone of the system and then connecting an inlet closure member () to a high pressure zone of the system while the system is in operation. A method of making the device includes displacing air from the device with the inert gas and then introducing the materialinto the tube.

Fluid injection device and method of making the same

A weldless assembly comprises a plurality of tubes, wherein the plurality of tubes includes an inner tube, an intermediate tube, and an outer tube; a first closure end configured to cap a first side of the plurality of tubes; and a second closure end configured to cap a second side of the plurality of tubes.

Weldless transfer tube assembly

A fluid pressure regulating system includes an auxiliary fluid circuit having a high pressure region and a low pressure region, a pump connected to the auxiliary fluid circuit and configured to discharge fluid into the high pressure region of the auxiliary fluid circuit, and a check valve connecting the high pressure region of the auxiliary fluid circuit to a main fluid interface line. The fluid pressure regulating system also includes a pressure regulating valve connecting the high pressure region of the auxiliary fluid circuit and the low pressure region of the auxiliary fluid circuit. The pressure regulating valve includes an aperture defining a fluid path from the high pressure region of the auxiliary fluid circuit to the low pressure region of the auxiliary fluid circuit. The aperture has a variable area as a function of fluid pressure within the main fluid interface line.

Fluid pressure regulating system

A pump system includes an inlet port, a discharge port, a drive aperture and a drain aperture. The drive aperture and the drain aperture are interchangeable such that the pump system may be utilized on either a clockwise or counterclockwise driven propeller. A propeller gearbox driven pump drive shaft is mounted into either aperture such that the aperture which receives the drive shaft becomes the drive aperture while the other aperture becomes the drain aperture. By allowing either pumping gear to become the driver gear by receiving the drive shaft, the pump system may accommodate either a clockwise or counterclockwise propeller gearbox.

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North Granby, CT, United States of America

Floyd Kent Matlack