Fluid handling – With repair – tapping – assembly – or disassembly means – Tapping a pipe – keg – or apertured tank under pressure
Patent
1987-11-19
1989-03-07
Walton, George L.
Fluid handling
With repair, tapping, assembly, or disassembly means
Tapping a pipe, keg, or apertured tank under pressure
137319, 251216, 285197, 408 87, 408137, 408204, B23B 4108, F16L 4104, F16K 4300
Patent
active
048097357
ABSTRACT:
Apparatus and method for tapping a tubular member includes a split ring type clamp arrangement having a tapping tee assembly extending therefrom. The clamp arrangement includes a combination alignment/hold structure to facilitate orientation of the clamp arrangement with the tubular member. A combination valve and cutting tool cooperates with the tapping tee assembly. An annular cutting surface on the tool has a first diameter for cutting an aperture in the tubular member. An annular, conical flange portion on the exterior of the tool spreads the aperture to a diameter greater than the first diameter, while a sealing land on the cutting tool has a second diameter larger than the first diameter and is adapted for close receipt in the aperture. A radial shoulder engages an internal surface of the tubular member for securely clamping and sealing the tapping tee assembly thereto. A second portion of the combination valve and cutting tool is removed from a first portion to thereby open a continuous flow passage from the tubular member to the tapping tee assembly. In another preferred embodiment, the first and second portions are retained together and adapted for relative movement.
REFERENCES:
patent: 2414911 (1947-01-01), Temple
patent: 3240226 (1966-03-01), Burkholder
patent: 3349792 (1967-10-01), Larkin
patent: 3692044 (1972-09-01), Wise
patent: 3756261 (1973-09-01), Minchhoff
patent: 3995655 (1976-12-01), Sands
patent: 4029118 (1977-06-01), Merideth
patent: 4063844 (1977-12-01), Pessia
patent: 4076038 (1978-02-01), Wynne
patent: 4258941 (1981-03-01), Louthan et al.
Hart Ralph L.
Reschke Albert H.
Volgstadt Frank R.
Perfection Corporation
Walton George L.
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