Fluid handling – With repair – tapping – assembly – or disassembly means – Tapping a pipe – keg – or apertured tank under pressure
Patent
1981-04-28
1982-10-26
Walton, George L.
Fluid handling
With repair, tapping, assembly, or disassembly means
Tapping a pipe, keg, or apertured tank under pressure
138 94, 138 97, 166 55, F16K 4300, F16L 5510, F16L 5518
Patent
active
043556566
ABSTRACT:
Apparatus adapted to be retrofitted on an existing live pipeline to plug off and isolate a section of the pipe while maintaining flow through an associated bypass circuit. The disclosed apparatus includes a housing to be secured around the pipe and elements operable in the housing to cut into the pipe and establish a closed flow path between one section of the pipe and the exterior of the housing while isolating such flow from a work chamber within the housing and remaining sections of the pipe.
REFERENCES:
patent: 2171937 (1939-09-01), Larry et al.
patent: 3833020 (1974-09-01), Smith
patent: 3863667 (1975-02-01), Ward
patent: 3867964 (1975-02-01), Gardner
patent: 4177827 (1979-12-01), Smith et al.
The Pipe Line Development Company
Walton George L.
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