Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means
Patent
1983-01-05
1985-01-01
Holko, Thomas J.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
411 34, 411340, F16B 1304
Patent
active
044914474
ABSTRACT:
An anchoring retainer is mounted in a blind hole in a concrete floor or wall. The retainer, adapted to be used with a threaded element, comprises a flexible unitary one-piece body made from a plastic material. The body has an axis, is of generally triangular configuration and has at the apex thereof a sleeve provided with an opening surrounding the axis through which the threaded element extends. The sleeve has a pair of integrally formed outwardly diverging elongated flexible legs. An elongated flexible strut of V-shape is spaced axially from the sleeve and includes a central strut portion located beneath and spaced from the sleeve along with a pair of outwardly diverging strut portions which are integrally connected to the central strut portion and to the flexible legs near the outer ends thereof. In use, the sleeve end of the retainer is inserted into the blind hole, with the free ends of the legs near the open end of the blind hole. The threaded element extends through an opening in the connecting member, which is to be affixed to the supporting structure provided with the blind hole, and then through the opening in the central strut portion until the leading end of the threaded element is threaded into the sleeve of the retainer. Continued rotation of the threaded element moves the threaded element lengthwise in the blind hole until the free ends of the legs are bottomed out or abut the opposing surface of the connecting member. Further rotation of the threaded element causes the legs to further compress and bulge outwardly into tight friction contact with the side wall of the blind hole due to the compression.
REFERENCES:
patent: 964226 (1910-07-01), Farrand
patent: 1295734 (1919-02-01), Greubel
patent: 1819828 (1931-08-01), Tomkinson
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patent: 3213745 (1965-10-01), Dwyer
patent: 3213746 (1965-10-01), Dwyer
patent: 3651734 (1972-03-01), McSherry
patent: 4079655 (1978-03-01), Roberson
patent: 4143581 (1979-03-01), Smith et al.
Parker Glenn T.
Smith Jon D.
Dry Dock Industries, Inc.
Holko Thomas J.
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