Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Including sleeve and distinct tapered expander
Patent
1990-10-26
1993-01-26
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Including sleeve and distinct tapered expander
411 45, 411173, F16B 1306
Patent
active
051818167
ABSTRACT:
An expanding anchor assembly which after securement can be simply released and immediately easily removed by hand from its embedment matrix substrate without damage to itself, the hole in which it was secured or the matrix substrate in which it was embedded.
The anchor assembly 1 comprises one separate tubular sleeve 2, with a bore through its entire length, and another separate elongated cylindrical plug 3.
Sleeve 2 has one integral securing component 4 end with parallel longitudinal slots 8 forming a plurality of resilient radially expanable tabs 9 with single internal circumferential protrusions 7 located a predetermined distance from their free end. The other integral joining component 5 end has a means of attaching selected separate objects thereto.
Plug 3 is of a length equal to or less than the aforestated protrusion 7's predetermined distance and a diameter movable through bore of sleeve 2.
In function, plug 3, in its movement within bore of sleeve 2 toward securing component 4, results in interference with protrusions 7 expanding tabs 9 radially outward to secure anchor assembly in hole 10 of matrix 11 substrate. The continued movement of plug 3 past protrusions 7 allows tabs 9 to contract radially inward simultaneously entrapping plug 3 and releasing anchor assembly 1 for its subsequent removal.
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