Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Oppositely acting double wedge expander means
Patent
1992-01-28
1992-12-08
Lindsey, Rodney M.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Oppositely acting double wedge expander means
411 54, 411 58, 411 75, 403297, F16B 1304
Patent
active
051692694
ABSTRACT:
This invention relates to one-strike wedging type blank nails for use in rigidly joining, in a simple operation, wooden articles in manufacture of furniture, or ceramic articles (such as roofing or other tiles) or metallic articles in the building and construction industry, for example. Such a blank nail includes a main body in the form of a hollow pipe, and a pair of expander elements attached to opposite ends of the main body. The main body defines split slots extending axially at the opposite ends thereof to form wedging portions. Each of the expander elements includes a contained portion fitted into the main body, a large diameter portion having a larger diameter than the contained portion, and a flare portion formed between and continuous steplessly with the contained portion and large diameter portion. The large diameter portion defines an outward end surface acting as an input surface for receiving a compressive force applied in a direction to move the expander elements toward each other. This construction allows wooden articles, metallic articles or tiles to be joined simply and rigidly.
REFERENCES:
patent: 508254 (1893-11-01), Steward
patent: 1150358 (1915-08-01), Gilmer
patent: 1349437 (1920-08-01), Royer
patent: 1639231 (1927-08-01), Ogden
patent: 1808318 (1931-06-01), Pleister
patent: 1832706 (1931-11-01), Hoshor
patent: 3216305 (1965-11-01), Kaplan et al.
patent: 3438659 (1969-05-01), Waldron
patent: 3954345 (1976-05-01), Morris
patent: 4093389 (1978-06-01), Wibrow
Kaizaki Iwao
Mihara Tomiyoshi
Tatematsu Shunji
Kojima Moonray
Lindsey Rodney M.
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