Cylindrical threaded connection with uniform interference

Details Cylindrical threaded connection with uniform interference Cylindrical threaded connection with uniform interference

1985-09-13

1988-03-15

Arola, Dave W.

Pipe joints or couplings

Screw

403343, F16L 1500

Patent

active

047308575

ABSTRACT:
A cylindrical threaded connection in which most of the threads between the slightly tapered pin end and the slightly tapered box end have free running radial clearance therebetween. One or two revolutions of thread near the pin end or near the box opening have reduced root dimension or enlarged crest dimension to provide uniform interference in the last revolutions or so of complete connection makeup. This uniformly spreads the load over the axial distance of the interference.

REFERENCES:
patent: 105290 (1870-07-01), Allison
patent: 1927656 (1933-09-01), Eaton et al.
patent: 2267923 (1941-12-01), Johnson
patent: 2885225 (1959-05-01), Rollins
patent: 4244607 (1981-01-01), Blose
patent: 4588213 (1986-05-01), Bollfrass et al.

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