GAS SUPPLY COUPLING FOR A WATER HEATER
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United States of America Patent
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app pub date -
Sep 22, 2011
filing date -
Nov 18, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A gas supply coupling is disposed within and extends through an opening of a combustion chamber for a water heater. The coupling includes a fitting which is a relatively inexpensive stamped component. A stepped tubular connection extends from a plate and includes a first portion having a first diameter which necks down to a second portion having a second diameter less than the first diameter. The stepped tubular connection receives a gas supply tube into the first portion and a gas supply line over the second portion. The tubes are braised to the stepped connection. Other gas supply couplings include a machined fitting and a direct connection between a gas supply tube and a gas supply line in which the gas supply tube itself provides for both the seal to the shield and the connection to the gas supply line.
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