1977-06-27
1978-07-18
Britts, Ramon S.
F16B 3504
Patent
active
041008332
ABSTRACT:
An improved blind nut of the type sometimes referred to as an expansion bolt anchor is disclosed. It is characterized in that it is a single unitary piece of resilient material shaped to provide a thread engaging portion and having outwardly extending wings which, in normal unstressed position, have a length longer than a dimension of the wall or panel opening into which insertion is intended. The blind nut is deformed as it is inserted and the wings spread after insertion through a panel opening to prevent removal and are caused to be drawn flat against the back of the panel as the attaching bolt is threaded through the blind nut.
REFERENCES:
patent: 1819828 (1931-08-01), Tomkinson
patent: 2144895 (1939-01-01), Place
patent: 2159573 (1939-05-01), Tinnerman
patent: 2387468 (1945-10-01), Ritzel
patent: 2516274 (1950-07-01), Tinnerman
patent: 2861618 (1958-11-01), Tinnerman
patent: 3170361 (1965-02-01), Vaughn
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