Pipe joints or couplings – Molded joint – Solder
Patent
1997-05-09
1999-01-12
Arola, Dave W.
Pipe joints or couplings
Molded joint
Solder
285368, 285910, 29428, F16L 1308
Patent
active
058577173
ABSTRACT:
An improved device and method for plumbing a recirculating water pump into a hot water heating system, the water pump having a pair of connecting flanges on the inflow and outflow sides of the pump. The present invention includes a section of copper tubing which has one end flared, the flare preferably being at approximately right angles to the longitudinal axis of the tubing. Further, an installation flange is provided having a central hole and an inside face to be positioned against a corresponding face of a connecting flange of the recirculating water pump, the copper tubing being inserted through the central hole of the installation flange with the flared end positioned against the inside face of the installation flange. A flexible gasket, having a central opening, being positioned between the installation flange and the connecting flange of the recirculating pump. The installation flange and flexible gasket being connected to the connecting flange of the recirculating pump with bolts.
REFERENCES:
patent: 1292060 (1919-06-01), Richards
patent: 1592175 (1926-07-01), Boyd
patent: 1929401 (1933-10-01), Badger
patent: 2131553 (1938-09-01), Lin
patent: 2437385 (1948-03-01), Halford
patent: 2460665 (1949-02-01), Wurzburger
patent: 3278202 (1966-10-01), Smith
patent: 3501171 (1970-03-01), Baron
patent: 4198078 (1980-04-01), Herbert
Arola Dave W.
Conover Richard C.
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