Duct joining system
AssigneeExanno Products Limited
InventorMichael T. Sullivan
Life of this patent
Estimating the term…
Abstract
A duct jointing system has frame members each with a channel portion for engaging an end of a respective duct wall and an outwardly projecting portion. L-shaped connectors engage in openings in the outwardly projecting portions for securing the frame members together as frames and adjacent frames are connected by cleats engaging projections on the outwardly projecting portions and reinforcing flanges on the connectors, the flanges being cut-away to allow the cleats to be driven longitudinally into position.
Claims10
A duct jointing system, comprising:
- a plurality of elongate flange members;
- each flange member having a longitudinal channel portion defining a longitudinal opening for receiving therein one end of a respective wall of a section of a sheet metal duct and a longitudinal hollow portion upstanding from said channel portion, each hollow portion providing a respective outer side face for engagement by sealing means for sealing the joint between abutting flange members and having end openings at opposite ends thereof;
- each flange member channel portion having a hollow protuberance extending longitudinally of the respective flange member and protruding beyond the said outer side face, the protuberances of immediately adjacent flange members permitting the respective immediately adjacent sheet metal duct wall ends to extend closer together to facilitate the sealing between the duct sections at the corners;
- and
- generally L-shaped corner connecting pieces for linking said flange members together in mutually angularly disposed relationship to form a frame, each corner connecting piece comprising a pair of limbs for engagement in respective ones of said flange member end openings and a common junction portion from which said limbs extend.
A flange member for a duct jointing system for connecting together duct sections in end-to-end sealed relationship the duct jointing system comprising:
- a plurality of said flange members, and
- generally L-shaped corner connecting pieces for linking said flange members together in mutually angularly disposed relationship to form a frame, said corner connecting pieces each comprising a pair of limbs for engagement in respective ones of said flange members and a common junction portion from which said limbs extend;
- wherein each flange member has a longitudinal channel portion defining a longitudinal opening for receiving therein one end of a respective wall of a section of a sheet metal duct, and a longitudinal hollow portion upstanding from said channel portion and providing a respective outer side face for engagement by sealing means for sealing the joint between abutting flange members, each hollow portion having end openings at opposite ends thereof;
- and
- wherein each flange member channel portion has a hollow protuberance protruding beyond the said outer side face, said protuberance extending longitudinally of the respective flange member and permitting the respective immediately adjacent sheet metal duct wall ends of immediately adjacent duct sections to extend closer together toward one another adjacent the corner connecting piece to facilitate the sealing between the duct sections at the corners.
Dependencies are inferred from the claim text.