Title: Air conditioning charging apparatus coupling

Abstract: An improved air conditioning charging apparatus includes a plug which is connected with the air conditioning system. The plug is provided with a valve of the automotive tire or Dill type to prevent leakage of refrigerant fluid from the air conditioning system. To further prevent leakage of refrigerant fluid from the air conditioning system, the threaded outer end portion of the plug is capped. When the air conditioning system is to be charged with refrigerant fluid, the cap is removed and a socket assembly which is connected to a source of refrigerant fluid under pressure is connected with the plug. To provide a secure connection between the socket assembly and the plug, an external groove is formed in the plug and is engaged by locking balls on the socket assembly. This external groove is disposed inwardly of the threaded outer end portion of the plug.

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Inventors: Karcher, Thomas D. (Rocky River, OH, US)

Application Number: 805978
Filing Date: 1977-06-13
Publication_date: 1980-01-08
Assignee: The Hansen Manufacturing Company (Cleveland, OH)
Primary Class(es): 137/614.04 62/292, 137/231, 137/614.02, 137/614.03
Other Classes:
US Patent Ref:

1534862	Apr, 1925	Myers	137/231.
2632462	Mar, 1953	Selwyn	137/322.
2837350	Jun, 1958	Druge	137/231.
3424181	Jan, 1969	Morse	137/68.
3538961	Nov, 1970	Bruce	62/292.
3777782	Dec, 1973	Schendure	137/614.
3916642	Nov, 1975	Mullins	137/318.
3935713	Feb, 1976	Olson	62/77.
3976110	Aug, 1976	White	62/292.

Other Refs:
Primary Examiner: Schwadron, Martin P.
Assistant Examiner: Chambers, A. Michael
Attorney: