초록 ▼

A plurality of flange portions are positioned oppositely of one another on the ends of a pair of generally rectangular sheet metal ducts. The flange portions are positioned in pairs on the adjacent ends of the ducts and each flange portion includes an upstanding wall having a pair of end portions fo

A plurality of flange portions are positioned oppositely of one another on the ends of a pair of generally rectangular sheet metal ducts. The flange portions are positioned in pairs on the adjacent ends of the ducts and each flange portion includes an upstanding wall having a pair of end portions for receiving the right angle legs of corner pieces. Four corner pieces extend into abutting relation with the upstanding walls at the four corners of the end of each duct to form a frame around the duct end portion. Each corner piece has a corner section, and a pair of legs extend angularly from the corner section. The pair of legs extend into abutting relation with the upstanding walls of adjacent flange portions on each duct end portion. In the assembled joint, the frames around the duct end portions are oppositely positioned with a gasket member positioned between the flange upstanding walls and the surfaces of abutting corner pieces. Each corner piece includes a corner and an outer edge with a corner flange. A channel-shaped clamp is forcibly slidable on the corner flanges of adjacent corner pieces to a position closely adjacent the flange upstanding walls on the duct end portions. Each clamp connects and compresses together adjacent corner pieces to exert a sealing force upon the gasket member to form an air tight seal around the assembled duct end portions.

대표청구항 ▼

A duct joint assembly for connecting the end portion of generally rectangular ducts comprising, a plurality of flange portions extending upwardly from the end portion of a duct, each of said flange portions having an upstanding wall and a pair of opposite end portions, a plurality of angular corner

A duct joint assembly for connecting the end portion of generally rectangular ducts comprising, a plurality of flange portions extending upwardly from the end portion of a duct, each of said flange portions having an upstanding wall and a pair of opposite end portions, a plurality of angular corner pieces for connecting adjacent flange portions and forming a rectangular frame around the duct end portions, said corner pieces each having a body portion with a corner section and a pair of leg portions extending angularly therefrom, each of said leg portions arranged to extend into abutting relation with said upstanding wall of said flange portions to connect adjacent flange portions on the duct end portion, said corner piece leg portions on adjacent duct end portions positioned adjacent to each other with said duct flange portion upstanding walls separating said corner piece leg portions, said body portion of each of said corner pieces having an outer edge extending from said corner section to each of said leg portions, a flange positioned on said outer edge of each said corner piece body portions and extending from each of said leg portions to said corner section, a channel-shaped clamp forcibly slidable only on said flanges of said adjacent corner piece body portions to urge said adjacent corner piece body portions toward each other and connect said rectangular frames of adjacent rectangular ducts and exert a sealing force upon said respective duct adjacent flange portion upstanding walls, and locking means to lock said channel-shaped clamp on said adjacent corner pieces.