Preselected releasable threaded coupling member

Details Preselected releasable threaded coupling member Preselected releasable threaded coupling member

1976-09-16

1977-12-20

Shedd, Wayne L.

Joints and connections

Distinct end coupler

Continuous thread

85 46, B25G 300

Patent

active

040638375

ABSTRACT:
A method for cutting continuous non-symmetrical threads on a cylindrical workpiece by a modified process of thread whirling. Variations of the thread form are accomplished by skewing the axis of the whirling tool relative to the axis of the cylindrical workpiece and the whirling axis offset. One practical form of resulting thread is of the reverse buttress type useful for drill rod steel.

REFERENCES:
patent: 1953095 (1934-04-01), Baker
patent: 3327380 (1967-06-01), Howlett
patent: 3424479 (1969-01-01), Ditson et al.

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