Coupling sleeve

Details Coupling sleeve Coupling sleeve

1975-03-24

1978-07-11

Callaghan, Thomas F.

Pipe joints or couplings

Internal sleeve

With external

285 47, 285424, F16L 2100

Patent

active

040997499

ABSTRACT:
Coupling sleeve for the interconnection of hollow prismatic objects from sheet material, such as channel segments of an air heating device, said sleeve having a U- or W-shaped cross section, the limbs of this cross section having different length for facilitating the insertion of the edge of said prismatic objects into said coupling sleeve.

REFERENCES:
patent: 180416 (1876-08-01), Clow
patent: 442837 (1890-12-01), Ward
patent: 1762766 (1930-06-01), De Garay
patent: 1817772 (1931-08-01), Sipe
patent: 1817776 (1931-08-01), Sipe
patent: 1862260 (1932-06-01), Edmunds
patent: 2123889 (1938-07-01), Gleason
patent: 2325464 (1943-07-01), Bannister
patent: 2360159 (1944-10-01), Peck
patent: 2484192 (1949-10-01), Squiller
patent: 3033600 (1962-05-01), Drysdale
patent: 3512805 (1970-05-01), Glatz
patent: 3655223 (1972-04-01), Johnson
patent: 3687168 (1972-08-01), Sherman et al.
patent: 3774972 (1973-11-01), Grapengiesser et al.
patent: 3836181 (1974-09-01), Kelver
patent: 3858995 (1975-01-01), Sand

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