Conduit couplings

Details Conduit couplings Conduit couplings

1986-10-31

1987-09-08

Arola, Dave W.

Pipe joints or couplings

Sleeve

Dependent

285424, 285903, F16L 2106

Patent

active

046919457

ABSTRACT:
A coupling for circular spiral lock seam conduit sections is comprised of a band curved to encircle the conduit, preferably with overlapping ends, a groove running along the interior of the band of sufficient cross section to receive the spiral lock seam, and clamps for tightening the band around the conduit sections. The groove runs at an angle along the band to form a spiral when the band is curved around the conduit sections, which mates with the spiral of the lock seam. The width of the groove exceeds that of the lock seam so that when the band is tightened the groove will shift laterally, sealing one side of the groove against the facing side of the lock seam. Other features are included to provide the maximum degree of sealing around the entire circumference of the conduit sections.

REFERENCES:
patent: 292306 (1984-01-01), Hawley
patent: 704936 (1902-07-01), Scherer
patent: 1836336 (1931-12-01), Replogle
patent: 2937893 (1960-05-01), Hill
patent: 3239254 (1966-03-01), Campbell
patent: 3298721 (1967-01-01), Wiley
patent: 3572394 (1971-03-01), Davis
patent: 3782763 (1974-01-01), Henrickson
patent: 4155574 (1979-05-01), Hulsey

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