Connecting apparatus for an air duct system |
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| 申请号 | US39650273 | 申请日 | 1973-09-12 | 公开(公告)号 | US3917323A | 公开(公告)日 | 1975-11-04 |
| 申请人 | MORGAN JOHN P; | 发明人 | MORGAN JOHN P; | ||||
| 摘要 | Apparatus is disclosed for connecting components of the duct work of a heating or air conditioning system, or a combined system, where one of the components to be connected is made of duct board such as fiber board, or other relatively easily penetrable material. The connecting apparatus includes an elongated strip member for overlapping the ends of adjacent duct components to be connected, and this strip member is made of material, such as sheet metal, which may be cut or bent to conform with the joint to be made. Slots are provided in the strip member so that a pull tie having an enlarged head portion and a tail portion or pull member may be inserted through the strip member and through the fiber board and then the tail portion pulled and twisted to secure the strip member to the fiber board. Various forms of the strip member and methods employing such apparatus are also disclosed. | ||||||
| 权利要求 | 1. In an air flow system having a duct board member connected to another member of the system, the connection between said duct board member and said another member comprising an elongated strip member overlapped with the inside of said members to provide connection therebetween, said strip member including a plurality of spaced openings adjacent said duct board member and means connecting said strip member to said another member adjacent said another member; and a plurality of blind fasteners separate from said strip member with one of said blind fasteners being provided in each of at least a substantial number of said spaced openings to provide connection between said duct member and said strip member, each of said blind fasteners being a pull tie comprising an enlarged head portion lying substantially against the outside of said duct board member, and a tail portion extending from said head portion through said duct board member and one of said spaced openings, said tail portion being laterally enlarged adjacent said strip member to prevent passage through said opening in the direction of original insertion. 2. Apparatus for connecting adjacent duct members of an air flow system wherein at least one of said members is made of duct board, comprising, in combinaation: an elongated, relatively stiff, strip member including a first longitudinally extending portion for overlapping an end of the duct board member and a second longitudinal extending portion for overlapping an adjacent part of the other duct member to provide means by which the strip member may be secured to the other duct member, and a plurality of tie means each having a head end and a tail end, the head end being adapted to pass through said first portion of the strip member and to penetrate and pass through the overlapped end of said duct board member, and having a laterally enlarged portion which prevents its return through said duct board member so that the tail end of the tie means may be manipulated in a manner to secure said duct board member to the first portion of said strip member. 3. The apparatus of claim 2, wherein said first portion of said strip member has a plurality of openings spaced therealong through which the head ends of the tie means are adapted to pass. 4. The apparatus of claim 2, wherein the first portion is bent transversely of its length into a shape for overlapping the end of a correspondingly shaped duct board member. 5. The apparatus of claim 2, wherein the other duct member comprises a wall having an opening to which the end of the duct board member is to be connected, and said strip member is bent along its length into an ''''L''''-shape, with said first portion of said strip member forming one leg of the L adapted to extend through the opening, and the sEcond portion thereof forming the other leg of the L adapted to overlap the wall adjacent the opening. 6. The apparatus of claim 5, wherein said first portion of said strip member has a plurality of openings spaced therealong through which the head ends of the tie means are adapted to pass. 7. The apparatus of claim 5, wherein the first portion is bent transversely of its length into a shape for overlapping the end of a correspondingly shaped duct board member. 8. The apparatus of claim 5, wherein said first portion has tab means spaced therealong above said second portion of the strip member to receive the overlapped part of the duct member therebetween. 9. The apparatus of claim 8, wherein said first portion of said strip member has a plurality of openings therealong through which the head ends of the tie means are adapted to pass. 10. The apparatus of claim 8, wherein the first portion is bent transversely of its length into a shape for overlapping the end of a correspondingly shaped duct board member. 11. The apparatus of claim 5, wherein the second portion of the strip member includes an ''''S''''-shaped means for connecting it to the overlapped part of the other duct member. 12. The apparatus of claim 11 wherein said first portion of said strip member has a plurality of openings therealong through which the head ends of the tie means are adapted to pass. 13. The apparatus of claim 5, including additional tie means for securing said second portion to the overlapped part of said other duct member. 14. The apparatus of claim 13, wherein said first and second portions of said strip member have a plurality of openings spaced therealong through which the head ends of the tie means are adapted to pass. 15. The apparatus of claim 2, wherein the second portion of said strip member includes an S-shaped means for connecting it to the overlapped part of the other duct member. 16. The apparatus of claim 15, wherein said first portion of said strip member has a plurality of openings spaced therealong through which the head ends of the tie means are adapted to pass. 17. The apparatus of claim 2, including an S-shaped member adapted to slide over the first and second portions of the strip member to connect them to one another. 18. The apparatus of claim 17, wherein said first portion of said strip member has a plurality of openings spaced therealong through which the head ends of the tie means are adapted to pass. |
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