Pipe joints or couplings – Molded joint – Interlocked
Patent
1994-07-20
1995-06-13
Arola, Dave W.
Pipe joints or couplings
Molded joint
Interlocked
285405, 285424, F16L 1302
Patent
active
054235766
ABSTRACT:
A corner piece for a sheet metal connector system that includes coupling members which have a V-shaped cross section and inwardly turned retaining edges spaced a given distance from the apex of the V includes a first leg which has a width slightly less than the given distance and a length, and a second leg which has a width slightly less than the given distance and a length which extends at an angle other than 180 degrees with respect to the first leg's length. The first leg may be snugly fitted between the apex of a first V-shaped coupling member and the inwardly turned edge of the first coupling member and the second leg may be snugly fitted between the apex of a second V-shaped coupling member and the inwardly turned edge of the second coupling member to join the two coupling members together at the angle. The first and second legs may be identical separate pieces which can intersect and be joined.
REFERENCES:
patent: 1779346 (1930-01-01), Trachte
patent: 1793127 (1931-01-01), Osius
patent: 1826133 (1931-01-01), Hatch
patent: 2332641 (1943-01-01), Jahant
patent: 2334046 (1943-01-01), Tinnerman
patent: 3202184 (1965-01-01), Golshalk
patent: 3387809 (1968-01-01), Zwerling
patent: 3428342 (1969-01-01), Chambers
patent: 3460859 (1969-01-01), Keating
patent: 3630549 (1971-01-01), Grimm
patent: 3712650 (1973-01-01), Mez
patent: 3791681 (1974-01-01), Moldow
patent: 3923326 (1975-12-01), Mez
patent: 4218079 (1980-08-01), Arnoldt
patent: 4461499 (1984-07-01), Hunter
patent: 4466641 (1984-08-01), Hallman et al.
patent: 4552388 (1985-11-01), Meinig
patent: 4564227 (1986-01-01), Murck
patent: 4566724 (1986-01-01), Arnoldt
patent: 4621661 (1986-11-01), Greiner
patent: 5054823 (1991-10-01), Arnoldt
patent: 5103872 (1992-04-01), Jyh-Long
patent: 5133580 (1992-07-01), Arnoldt
"Ductmate 25", p. 3.
Lockformer/Iowa Precision TDC (Brochure)-Undated.
Arola Dave W.
Industrial Air, Inc.
LandOfFree
Corner pieces for improved duct connector does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Corner pieces for improved duct connector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Corner pieces for improved duct connector will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1304988