Fluid handling – Processes – Cleaning – repairing – or assembling
Patent
1999-03-31
2000-11-07
Walton, George L.
Fluid handling
Processes
Cleaning, repairing, or assembling
13731541, 137318, 408 72R, 408 84, 292216, F16K 4300, F16L 4104, B23B 3910, B23B 4108
Patent
active
061421669
ABSTRACT:
A tool and method for plugging a service connection to a gas main in preparation for removal of the service tee removes the perforator, mills the hole in the main to provide a smooth seat for a sealing plug, and inserts a gas-tight sealing plug into the hole. The tool of the invention is operable through a narrow "keyhole" excavation, which decreases the risk to service personnel and significantly reduces costs of repairing the excavation. In the preferred embodiment the tool is loaded with a milling bit and a sealing plug before attachment to the service tee. The tool head is engaged to the service tee in a gas-tight fit to prevent the escape of gas during the procedure, and an adapter plate is pivoted between three working positions to perform the three steps of the service connection plugging method. In the preferred embodiment a pneumatic gear motor drives a hexagonal driver bit actuated by a linear actuator located in the shaft of the tool, the driving bit providing the required mechanical interface with each of the accessories involved in each step of the procedure. A separate pneumatic motor pivots the adapter plate between working positions, and specialized adapter is provided at each working position of the adapter plate allowing the same actuators to be used for the perforator removal, milling and plugging operations.
REFERENCES:
patent: 111474 (1871-01-01), Kiley
patent: 153606 (1874-07-01), Plimley
patent: 210706 (1878-12-01), Penney
patent: 284746 (1883-09-01), Lennox
patent: 309085 (1884-12-01), Payne
patent: 358445 (1887-03-01), Hall
patent: 478771 (1892-07-01), Payne
patent: 549619 (1895-11-01), Walker
patent: 561620 (1896-06-01), Sharp
patent: 585124 (1897-06-01), Shelley
patent: 864072 (1907-08-01), Boyd
patent: 1590186 (1926-06-01), Fanselow
patent: 1783503 (1930-12-01), Hall
patent: 1956129 (1934-04-01), Mueller et al.
patent: 2115992 (1938-03-01), Koppl
patent: 2151594 (1939-03-01), Grantham
patent: 2601434 (1952-06-01), Dubois
patent: 2647419 (1953-08-01), Dickason
Kuzan Pawel
Wiercienski Jacek
Eisen Mark B.
The Consumer's Gas Company Ltd.
Walton George L.
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