Tapered screw member having guide means

Details Tapered screw member having guide means Tapered screw member having guide means

1986-12-22

1989-04-04

Wilson, Neill

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Externally threaded fastener element, e.g., bolt, screw, etc.

Pilot end having means enhancing fastening or installation

411426, 411437, 285334, F16B 2500, F16B 3504

Patent

active

048181676

ABSTRACT:
A tapered screw member provided with a tapered external thread or a tapered internal thread, which comprises disposing a guide means somewhat higher than the crest of another tapered thread at a position connecting to the crest of the tapered external thread or the tapered internal thread, thereby engaging tapered threads smoothly, easily and quickly.

REFERENCES:
patent: 2079692 (1937-05-01), Lapointe
patent: 2150221 (1939-03-01), Hinderliter
patent: 3167333 (1965-01-01), Hall et al.
patent: 3762745 (1973-10-01), Cunningham

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