Emission-free exhaust pipe joint and clamp therefor

Details Emission-free exhaust pipe joint and clamp therefor Emission-free exhaust pipe joint and clamp therefor

1974-09-13

1976-07-20

Arola, Dave W.

Pipe joints or couplings

Packed

Flanged pipe

285410, 285423, F16L 1700

Patent

active

RE0289124

ABSTRACT:
The joint of the invention comprises exhaust pipes formed with beaded ends providing abutting flange-like surfaces that are axially forced together by a clamp applying wedging forces on the external beads. Modified forms of the joint have pilot extensions on one pipe of the joined pair, the bead on this one pipe in each case being spaced from the free end of the pipe. The pilot extension is telescoped within the other pipe bringing the beads together side by side and the clamp is engaged over both beads. In some joints, such as those formed in pipes made of a tough metal, a gasket may be inserted between the beaded ends.
The clamp for the joints is one which has a concave groove engaging over the pair of beads to apply the axial force by the wedging action produced when the clamp is constricted. The preferred clamp is made in two halves which have a hinged connection of great simplicity comprising merely a rectangular bight formed on one end of one half and a tongue formed on one end of the second half. The tongue lies in the bight and cannot move laterally because of the self-centering action produced when the clamp is engaged on the beads. The other end of each half comprises a tongue with perforations aligned to receive a bolt and nut to enable the halves to be clamped together, pivoting with respect to one another on the hinged connection.

REFERENCES:
patent: 1487389 (1924-03-01), King
patent: 1839761 (1932-01-01), Hutton
patent: 2271425 (1942-01-01), Harris
patent: 2329369 (1943-09-01), Hover
patent: 2717788 (1955-09-01), Raynes
patent: 2721582 (1955-10-01), Hoke
patent: 2937893 (1960-05-01), Hill et al.
patent: 3455582 (1969-07-01), Von Hoevel

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