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Ventilation > Chimney Or Stack > Chimneytop Or Stacktop Structure (e.g., Cowl) Chimneytop Or Stacktop Structure (e.g., Cowl)Chimneytop Or Stacktop Structure (e.g., Cowl) patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.06/08/06 - 20060121841 - Snap-tight chimney liner tee A snap-tight chimney liner tee includes a main section and a connecting section. The main section includes a cut-out portion sized for proper ventilation of a heating appliance. On either side of the cut-out portion are protrusions. The connecting section includes a connecting end, shaped to fit closely against the ... 05/25/06 - 20060111034 - Omnidirectional vent cap An omnidirectional vent cap for venting holding tanks is provided. Current vent caps seldom exhaust gasses and create higher rather than lower pressure above the vent. By providing a 360 degree channel, the present invention can use a small movement of air to significantly reduce the air pressure above the ... 05/11/06 - 20060099902 - Exhaust smoke-processing system An exhaust smoke processing system capable of economically removing heavy metal, comprising a air preheater 3 for heating combustion air by exhaust smoke discharged from a boiler 1, a heat recoverer 11 for heating a heat medium by exhaust smoke discharged from the air preheater 3, a dust collector 4 ... 06/23/05 - 20050136820 - Vent camouflage wrap A covering for use in combination with plumbing vent stacks and other pipe like structures protruding through the roof or walls of a house or building. The covering allows for vents to be camouflaged to blend in with the background material such as roofing. The background material is scanned and ... ### FreshPatents.com Support |