Countersunk hole reinforcing structure

Details Countersunk hole reinforcing structure Countersunk hole reinforcing structure

1999-07-02

2000-05-16

Wilson, Neill

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

Washer structure

411107, 411368, F16B 3300, F16B 4300

Patent

active

060627905

ABSTRACT:
A countersunk hole reinforcing structure, which includes a plate member having a countersunk hole formed of a circular recess and a screw hole at the center of the circular recess for the installation of a screw bolt to fix the plate member to an object below, wherein the plate member has a plurality of reinforcing ribs raised from the circular recess and equiangularly spaced around the screw hole to reinforce the structural strength of the wall body of the circular recess.

REFERENCES:
patent: 4757661 (1988-07-01), Hasan
patent: 4862664 (1989-09-01), Romine
patent: 5673920 (1997-10-01), Mockenhaupt

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