|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||285/331 ; 285/423 ; 285/903|
|발명자 / 주소|
|인용정보||피인용 횟수 : 18 인용 특허 : 9|
A duct joining system for sealingly connecting plastic gas-conveying ducts is provided. The joining system comprises a receptacle attached to an end of a first duct and sealingly fastened thereto. The receptacle has a size and configuration which is adapted to mate with an end of a second duct. The second duct has a grippable surface extending along its length. The interior of the receptacle contains releasable gripping means and a sealing gasket. The gripping means engages with the surface of the second duct in order to urge the end of the second duct i...
A continuous air-tight conduit system for use in heating and cooling systems in buildings comprising: a plurality of connected rigid plastic gas-conveying ducts of standard length, the length of the conduit being adjustable to other than a multiple of said standard length, each of said ducts having an interior and an exterior surface, a receptacle integral therewith at one end thereof and the remainder of the duct having a substantially uniform cross-section and grippable means on the exterior and interior surfaces extending along the entire length there...