Pipe joints or couplings – With assembly means or feature – Particular tool-engaging means or with tool
Patent
1990-02-09
1991-05-28
Cuomo, Peter M.
Pipe joints or couplings
With assembly means or feature
Particular tool-engaging means or with tool
285 2, 285 3, 285318, 285308, 81463, 239579, 137 681, 251321, F16L 5500
Patent
active
050187708
ABSTRACT:
A coupling having one end attached to a drop pipe of a fire sprinkler system and another end for attachment to a tool subsequent to initially testing the sprinkler system and to a sprinkler head thereafter. The coupling includes an internal frangible closure member to prevent flow of fluid from the drop pipe during the test phase so that the sprinkler may be pre-tested prior to attachment of the sprinkler head. The tool includes an external housing which after completion of the test phase is connected to the coupling, a ram being mounted within the housing and adjustable to position and impact member at the end of the ram at or in abutment with the frangible closure member. The ram is connected to a propelling assembly which permits the ram to be pulled manually against the biasing force of a spring away from the closure member, and upon release of the ram, the ram is propelled toward the closure member so that the impact member shatters the closure member to open communication through the coupling. The tool is thereafter disconnected and a sprinkler substituted.
REFERENCES:
patent: 2114583 (1936-03-01), Adams
patent: 2446848 (1946-11-01), Prester
patent: 3791034 (1974-02-01), Carver
patent: 3844585 (1974-10-01), Sanas et al.
patent: 3938704 (1976-02-01), Milgram
patent: 4475670 (1984-10-01), Rutter
Aberle Tim
Cuomo Peter M.
Ruderman Alan
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