Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Torque responsive nut or bolt driving connection – Frangible connection
Patent
1983-11-17
1987-05-05
Goldberg, Howard N.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Torque responsive nut or bolt driving connection
Frangible connection
291564R, 2940212, 2940215, 2940217, 29558, 206582, 206231, 411307, 411411, 411424, 411426, F16B 3100, F16B 3504, B65D 6900, B23P 700
Patent
active
046628061
ABSTRACT:
Apparatus for repairing a casting having a crack therein comprising a metal lock to extend across the crack and a lacing plug to fit in the crack, the metal lock formed as a rigid elongate member having a plurality of lobes formed from adjacent portions that are circular in cross-section and each having its center on the longitudinal axis of the elongate member, said lobes being of alternating large and small diameters and including a central large diameter lobe and at least one outer large diameter lobe at each side of the central large diameter lobe, said central large diameter lobe being spaced from each outer large diameter lobe by a small diameter lobe and with each lobe overlapping its adjacent lobe and extending through the elongate member; and the lacing plug including a head configured to receive a driving tool, a tapered shaft, a shoulder at a top of the tapered shaft, a non-threaded shaft portion interconnecting the head and the tapered shaft, a break-off groove formed in the non-threaded shaft portion adjacent to the shoulder, and straight threads formed on the tapered shaft, said threads having a uniform minor pitch diameter and a tapered major pitch diameter, said major pitch diameter being parallel to the outer diameter of the tapered shaft.
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Seal-Lock International Promotional Brochure entitled "Seal-Lock Now", bearing copyright date of 1979.
Seal-Lock.RTM. Product Identification Sheet by Seal-Lock International, Inc. (no date--believed to be after 1979).
Brochure entitled "Now", by Seal-Lock International dated 1981.
Brochure entitled "Seal-Lock.RTM. Cold Welding Process" by Seal-Lock International dated 1981.
"Minimize Downtime" Brochure by Utah Casting Repair (circa 1982).
Criddle B. Deon
Finch Robert R.
Goldberg Howard N.
Reed International, Incorporated
Wallace Ronald S.
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