Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1991-01-10
1992-04-14
Eley, Timothy V.
Metal working
Method of mechanical manufacture
Assembling or joining
29890144, B23P 1102
Patent
active
051035499
ABSTRACT:
Apparatus for connecting the ends of a pair of oval duct sections includes a pair of arcuate frame sections and a pair of linear intermediate frame sections or a pair of frame sections with a linear portion and a pair of semi-circular end portions. The sections are connected to each other by connector pieces having leg portions extending into receivers in the profile of the frame sections. The connector pieces have stop members which abut the edges of the frame sections and provide a gap therebetween. The lower stop member is offset rearwardly from the body portion of the connector piece and the edge portion of the oval duct extends outwardly into the gap portion. The oval duct end portions are connected to the duct connector frame members and pairs of frame members are positioned in adjacent relation with a gasket member therebetween. The connecting members include a securing device to secure the adjacent frame members to each other and exert a compressive force on the gasket member therebetween. Portions of the gasket member at the gaps are distorted into abutting and sealing relation with the front edge of the duct in the gap.
REFERENCES:
patent: 2427685 (1947-09-01), Midtlyng et al.
patent: 3630549 (1971-12-01), Grimm
patent: 3920271 (1975-11-01), Bluestone
patent: 4568109 (1986-02-01), Prueter
patent: 4584756 (1986-04-01), Arnoldt
Arnoldt Frederick J.
Arnoldt Peter J.
Meinig Manfred
Ductmate Industries, Inc.
Eley Timothy V.
Martin C. Richard
Price, Jr,. Stanley J.
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