Tyco Fire Products LP

The Water Heater Industry Joint Research and Development Consortium

Grinnell Corporation

Rheem Manufacturing Company

Bradford White Corporation

Thomas E Archibald

James W Mears

Manuel R Silva, Jr

Yoram Ringer

Donald B Pounder

Eric M Lannes

Bruce A Hotton

Gordon W Stretch

Gary A Elder

Larry D Kidd

John H Scanlon

James M Martin

James T Campbell

Michael W Gordon

Garrett L Doss

A dry sprinkler for a fire protection system. The preferred dry sprinkler has a metallic disc annulus positionable within a passageway to skew a central axis of a face of the metallic disc annulus with respect to a longitudinal axis of the dry sprinkler so that an expected minimum flow rate based on a rated discharge coefficient is provided. The dry sprinkler operates to provide an expected flow rate over a range of start pressures. The expected flow rate is based on a K-factor rating. The dry sprinkler provides an acceptable level of fluid flow rate from the expected flow rate based on the K-factor for a range of start pressures.

Dry sprinkler

Dry Sprinkler

A gas-fired water heater is provided with a combustion shutoff system which precludes further combustion within the water heater's combustion chamber in response to a combustion temperature therein reaching a predetermined level correlated to and indicative of a predetermined, undesirably high concentration of carbon monoxide present in the combustion chamber. In various illustrated embodiments thereof, the combustion shutoff system is operative to terminate further combustion air inflow to the combustion chamber, or terminate further fuel flow to the burner portion of the water heater.

Fuel-fired heating appliance with temperature-based fuel shutoff system

A gas-fired water heater has a combustion chamber with a bottom wall defined by a perforated flame arrestor plate forming a portion of a flow path through which combustion air may be supplied to a burner structure within the combustion chamber. During firing of the water heater a combustion air shutoff system having a heat-frangible temperature sensing structure disposed within the combustion chamber senses an undesirable temperature increase in the combustion chamber, caused by for example a partial blockage of the flow path, and responsively terminates further air flow into the combustion chamber, thereby shutting down the burner, prior to the creation in the combustion chamber of a predetermined elevated concentration of carbon monoxide.

Combustion air shutoff apparatus for a fuel-fired heating appliance

Methods of operating a fuel-fired heating apparatus

Fuel-fired heating appliance with combustion air shutoff system having frangible temperature sensing structure

A pipe line strainer has a strainer body having an inner body wall surface and defining a flow passageway, and further defining a strainer inlet in communication with the flow passageway and a strainer outlet spaced from the strainer inlet along the flow passageway in a direction for fluid flow, and a strainer basket disposed within the flow passageway between the strainer inlet and the strainer outlet. The strainer basket has a strainer basket wall defining a plurality of through apertures of predetermined cross dimension for flow of fluid from the strainer inlet toward the strainer outlet, the strainer basket wall dividing the flow passageway into a first region of flow upstream of the strainer basket wall and a second region of flow downstream of the strainer basket wall. At least one of the first region of flow and the second region of flow has an unequal distribution of flow due to change in incremental flow cross sectional area in the direction for fluid flow, with the larger cross-sectional area coinciding with an area of higher flow.

Strainer

Growing community of inventors

Providence, RI, United States of America

Thomas E Archibald