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US 8,505,185 B2Granted
Method of installing sealed circular ductwork
AssigneeDuctmate Industries, Inc.
InventorsDouglas G. Gudenburr, Vincent L. Bloom
Life of this patent
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Abstract
A circular sheet metal duct having a sealant applied across the longitudinal seam. The sealant will improve the efficiency and will reduce or eliminate air leakage from the longitudinal seam. The sealant is applied during the manufacturing processes so that an installer does not have to seal the duct work. The method of manufacturing the sealant is provided.
Claims14
A method for installing a sealed circular duct comprising:
- a) providing a circular sheet metal duct having a self locking longitudinal seam with a reusable liquid applied gasketing sealant positioned within the longitudinal seam while the seam is being formed;
- b) engaging the longitudinal seam and thereby simultaneously locking the seam to form the circular sheet metal duct and sealing the longitudinal seam without an installer applying a sealant;
- and
- c) connecting the ductwork with other ductwork.
1 more element
Dependencies are inferred from the claim text.