Expansion washer

Details Expansion washer Expansion washer

1992-06-12

1993-01-19

Lindsey, Rodney M.

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

Washer structure

Including adjustable thickness means

411350, 411371, 411149, F16B 4300

Patent

active

051802686

ABSTRACT:
An expansion washer structure comprises first and second washer elements having projected ramp members which engage. The ramp members have sloped ramp and level segments adjacent to one another which are disposed to progressively engage as the washer elements are rotated with respect to each other. An internal spring is connected between the washer elements to urge them in one rotational direction when normal compressive force on the washer elements is released. When the washer elements are rotated relative to each other, their ramp members move progressively to different positions, causing the washer structure to increase in thickness.

REFERENCES:
patent: 487721 (1892-12-01), Kalb
patent: 1386317 (1921-08-01), Claassen
patent: 1423480 (1922-07-01), Gumber et al.
patent: 2405889 (1946-08-01), Kennedy
patent: 3830484 (1974-08-01), Bright et al.
patent: 5090855 (1992-02-01), Terry

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