Break-away coupling with spaced weakened sections

Details Break-away coupling with spaced weakened sections Break-away coupling with spaced weakened sections

1993-11-04

1995-12-12

Wilson, Neill R.

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

Torque responsive nut or bolt driving connection

Frangible connection

411389, 256 131, 403 2, F16B 3100, F16B 3500, F16D 900

Patent

active

054744083

ABSTRACT:
A break-way coupling with spaced weakened sections includes a central controlled breaking region and rigid threaded bolts at each end for connection to a base at one end and to a pole or the like at the other end. The controlled breaking region includes two axially spaced necked-down portions of smaller diameter and solid cross-section. Where the axil length of the controlled breaking region is L and the necked-down portions have a diameter D, the dimensions D and L are selected so that the ratio D/L is within the range D/L.ltoreq.0.3. The necked-down portions have conical tapered surfaces to insure that at least one of the necked-down portions break upon bending prior to contact between any surfaces forming or defining the necked-down portions.

REFERENCES:
patent: 1926925 (1933-09-01), Wescott
patent: 3521413 (1970-07-01), Scott et al.
patent: 3837752 (1974-09-01), Shewchuk
patent: 3951556 (1976-04-01), Strizki
patent: 3967906 (1976-07-01), Strizki
patent: 4528786 (1985-07-01), Dinitz et al.
patent: 4923319 (1990-05-01), Dent

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