Back to results
US 7,708,034 B2Granted
Self locking sheet metal 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.
Claims15
A circular sheet metal duct that is self sealing when put together by an installer comprising:
- a. sheet metal;
- b. a self locking mechanism having a female portion and a male portion on opposite ends of the sheet metal, when the male portion engages the female portion the circular duct is formed;
- and
- c. a liquid applied gasketing sealant in the female portion or on the male portion that is applied during manufacturing of the duct so that when the female portion and the male portion are locked together by the installer a sealed duct is created.
1 more element
A plurality of circular sheet metal ducts comprising:
- a. a first piece of sheet metal;
- b. a self locking mechanism on the first piece of sheet metal having a female portion and a male portion on opposite ends of the sheet metal, when the male portion engages the female portion the circular duct is formed;
- c. a liquid applied gasketing sealant in the female portion or on the male portion on the first of sheet metal that is applied during manufacturing of the duct so that when the female portion and the male portion are locked together by the installer a sealed duct is created;
- d. a second piece of sheet metal;
- e. a self locking mechanism on the second piece of sheet metal having a female portion and a male portion on opposite ends of the sheet metal, when the male portion engages the female portion the circular duct is formed;
- f. a liquid applied gasketing sealant in the female portion or on the male portion on the second piece of sheet metal that is applied during manufacturing of the duct so that when the female portion and the male portion are locked together by the installer a sealed duct is created;
- and
- g. the second piece of sheet metal is nested around the first piece of sheet metal with both locking mechanisms disengaged for shipping, forming a bundle of circular ducts.
5 more elements
Dependencies are inferred from the claim text.