Finishing washer

Details Finishing washer Finishing washer

1987-05-15

1988-12-27

Gall, Lloyd A.

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

Washer structure

Including means for retaining washer to fastener

411353, 411544, 411546, F16B 4300

Patent

active

047937572

ABSTRACT:
A finishing washer 10 is presented. Finishing washer 10 comprises a frustoconical perforated disk 15 having a plurality of tabs 20 extending inward from disk 15. When applied to a screw 50, finishing washer 10 provides a wider bearing area to the screw head 52, to establish a wear point between screw 50 and the material finishing washer 10 will bear on. In this manner, the material is not damaged by friction or pressure when screw 50 is tightened. Further, stripping of screws is lessened due to the use of finishing washer 10 of this invention.

REFERENCES:
patent: 1487610 (1924-03-01), Schatzel
patent: 1865132 (1932-06-01), Olson
patent: 2746506 (1956-05-01), Poupitch
patent: 3414154 (1968-12-01), Rose et al.
patent: 3561792 (1971-02-01), Cycowicz
patent: 3673911 (1972-07-01), Ramillon
patent: 4188459 (1980-02-01), Hyner et al.
patent: 4241491 (1980-12-01), Hopp
patent: 4435112 (1984-03-01), Becker
patent: 4645393 (1987-02-01), Pletcher
patent: 4682686 (1987-07-01), Ueda et al.

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