Flush-mounted plug for filling a threaded hole

Details Flush-mounted plug for filling a threaded hole Flush-mounted plug for filling a threaded hole

1997-06-18

1998-11-03

Wilson, Neill R.

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

Headed fastener element

Having resilient securing structure on shank

411324, 411913, F16B 1304, F16B 1900

Patent

active

058299360

ABSTRACT:
A resin flush-mounted plug (11) for insertion into an internally threaded hole (1) with a countersink (2) formed in a pallet of a machine tool has a head (12) for filling the countersink (2) of the threaded hole (1) and a pair of legs (13) formed integrally with the head (12) for fitting into an internally threaded portion (3) of the threaded hole (1). The head (12) has a tapered under surface (12a) for filling the countersink (2) of the threaded hole (1). Also provided in the head (12) is a slot (12b), a hexagonal hole, or some other recess for accommodating a screwdriver blade, a wrench, or some other appropriate tool used to remove the flush-mounted plug (11). The legs (13) project outward radially from the underside of the head (12). The outer peripheral surfaces of the fixed ends of the legs (13) to the head (12) are arranged on a circumference whose diameter is smaller than the inner diameter C of the internally threaded portion (3) (A<C with A the diameter of the circumference). Furthermore, the outer peripheral surfaces of the free ends of the legs are arranged on a circumference whose diameter is larger than the inner diameter C and smaller than the outer diameter D of the countersink (2) (C<B<D with B the diameter of the circumference).

REFERENCES:
patent: 3476165 (1969-11-01), Vaughn
patent: 3628816 (1971-12-01), Ross, Jr.
patent: 3651734 (1972-03-01), McSherry
patent: 4112815 (1978-09-01), Tanaka
patent: 5098239 (1992-03-01), Thiel
patent: 5433571 (1995-07-01), Allison

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