Valve plug and valve provided therewith

Details Valve plug and valve provided therewith Valve plug and valve provided therewith

2006-12-12

2006-12-12

Jiang, Chen Wen (Department: 3744)

Refrigeration

With means for charging closed refrigeration producing system

C062S222000, C251S088000

Reexamination Certificate

active

07146824

ABSTRACT:
A valve plug is threadedly engaged with a valve stem so as to be inserted from an open end of a passage for charging with and/or releasing from a compressed fluid, toward an inner part of the passage, thereby closing an inner smaller diameter portion. The valve plug includes a threadedly engaging member threadedly engaging a portion of the passage located nearer to the open end side than the smaller diameter portion, and a turn head turnably connected to an end of the threadedly engaging member and having a distal end inserted into the smaller diameter portion so as to adhere closely to an open edge of the smaller diameter portion.

REFERENCES:
patent: 1974639 (1934-09-01), Bates
patent: 3155367 (1964-11-01), Gifford
patent: 6266971 (2001-07-01), Schroder et al.
patent: 2483565 (2002-03-01), None
patent: 550 806 (1923-03-01), None
Chinese Office Action issued Jul. 7, 2005, 5 pages (English translation attached - 3pages).

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