F - Mech Eng,Light,Heat,Weapons – 25 – B
Patent
F - Mech Eng,Light,Heat,Weapons
25
B
F25B 45/00 (2006.01) F25B 41/00 (2006.01)
Patent
CA 2349664
A refrigerant dispensing tool includes a three section body with a top manifold section having an evacuation port, a refrigerant supply port and an oil supply port. The intermediate body section has three elongated and converging valve chambers which connect with the corresponding ports and receive corresponding elongated fluid pressure balancing valve members. The valve members are independently operated and precisely controlled by corresponding air actuated pistons which receive pressurized air from corresponding air ports within the manifold section. An air actuated and spring biased annular piston is supported between the intermediate and base sections of the body and operates a set of circumferentially spaced balls which releasably clamp the tool to a stem valve fitting for a refrigerant system. An air actuated pin extends on the center axis of the body for opening and closing the valve stem within the fitting, and a resilient sealing ring forms a fluid-tight seal between the base section and the fitting.
Robinson Randy S.
Stemen Randy S.
Gowling Lafleur Henderson Llp
Production Control Units Inc.
LandOfFree
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