Fastening element with a cavity containing an explosive charge

Details Fastening element with a cavity containing an explosive charge Fastening element with a cavity containing an explosive charge

1978-06-08

1981-06-09

Holko, Thomas J.

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

Having separate expander means

Fluent pressure actuated

411440, 411455, B23P 1900, F16B 1500

Patent

active

042717477

ABSTRACT:
A fastening element having a cavity containing an explosive charge arranged so that, upon explosion of the explosive charge, anchoring of the fastening element in a bore of a workpiece takes place automatically. This fastening element functions both as a rivet and nail in combination and comprises sleeve means defining the cavity containing the explosive charge at one end and providing an aperture at the other end, and a nail disposed within the sleeve means, said nail comprising a head, shank and a tip and being arranged to be driven outside the aperture formed in the other end of the sleeve means. The head of the nail acts as a piston which can be driven by explosion of the explosive charge and as a stop which arrests the driving-out movement when the shank of the nail has passed through said aperture.

REFERENCES:
patent: 2064503 (1936-12-01), Temple
patent: 2455825 (1948-12-01), Temple
patent: 2556465 (1951-06-01), Burrows et al.
patent: 4102238 (1978-07-01), Thorner

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