Pipe joints or couplings – End to side or plate – Saddle-type clamp
Patent
1994-04-21
1996-05-21
Nicholson, Eric K.
Pipe joints or couplings
End to side or plate
Saddle-type clamp
285424, 285204, 285222, 285189, 29513, 29890148, F16L 4108
Patent
active
055182771
ABSTRACT:
A single piece duct fitting of generally cylindrical configuration for attachment to a large cylindrically-shaped flexible duct having a curved, easily deformed sidewall in which a hole has been created. This novel duct fitting is constructed of deformable sheet material that, before being assembled into a cylindrical configuration, was defined by an elongate sheet of material having a long edge of a generally sinusoidal configuration, with a plurality of short lateral slots defining teeth in this long edge. A pair of relatively closely spaced curves of generally sinusoidal configuration are disposed adjacent the teeth, which curves bear a closely aligned relationship with the first long edge of generally sinusoidal configuration. A plurality of evenly spaced slits extend between the pair of sinusoidal curves, with these slits defining a plurality of substantially identical tab members intended to bend outwardly when lengthwise compression is applied to the duct fitting. The tabs, upon being bent flat by the application of lengthwise compression to the duct fitting, forming an integral flange member of sinusoidal configuration extending around the duct fitting. After the teeth disposed along the first long edge have been inserted into a hole in the curved sidewall of the flexible duct and then bent over into a position preventing withdrawal of the duct fitting, the integral flange member serves as insertion-limiting means when brought into contact with the exterior of the duct fitting, for limiting the insertion of the duct fitting into the hole in the flexible ducting.
REFERENCES:
patent: 193847 (1877-08-01), Choate
patent: 2886007 (1937-07-01), Tompkins
patent: 2963783 (1960-12-01), Field
patent: 3185506 (1965-05-01), Szlashta
patent: 3290066 (1966-12-01), Primich
patent: 4147382 (1979-04-01), Wachter
patent: 5314212 (1994-05-01), Sanders
patent: 5393106 (1995-02-01), Schroeder
GCS Innovations, Inc.
Nicholson Eric K.
Renfro Julian C.
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