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US 7,478,467 B2Granted
Self locking sheet metal duct with a sealant and method for manufacturing the duct with a sealant and installing the duct with a sealant
AssigneeDuctmate Industries, Inc.
InventorsDouglas G. Gudenburr, Vincent L. Bloom
Life of this patent
Estimating the term…
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.
Claims11
A method for manufacturing a circular sheet metal duct comprising:
- a. providing sheet metal;
- b. providing a snap lock mechanism on the sheet metal;
- c. inserting a reusable liquid applied gasketing sealant into the snap lock mechanism;
- and
- d. forming the sheet metal into the shape of a circular duct.
2 more elements
Dependencies are inferred from the claim text.