Direct tension indicating washers

Details Direct tension indicating washers Direct tension indicating washers

1998-06-19

1999-08-03

Wilson, Neill

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

With means to indicate application of predetermined...

Axially deformable member or portion

411 13, 411 14, 116212, F16B 3102, G01L 500

Patent

active

059316187

ABSTRACT:
A direct tension indicating and maintaining washer has a first surface having at least one protuberance formed thereon and a second surface having at least one indentation formed therein opposite the protuberance. The inner diameter of the direct tension indicating and maintaining washer has an inner diameter wall meeting the second surface at an inner diameter edge. The outer diameter has an outer diameter wall meeting the second surface at an outer diameter edge. The inner diameter edge and the outer diameter edge lie in different planes. This causes the flattened direct tension indicating and maintaining washer to exert force against a bolt and maintain bolt tension. An alternative direct tension indicating and maintaining washer includes indicating material positioned in the indentation and a channel formed in the second surface leading from the indentation to the outside diameter of the direct tension indicating washer.

REFERENCES:
patent: 2476561 (1949-07-01), Pedersen
patent: 2781687 (1957-02-01), Knocke
patent: 2850937 (1958-09-01), Ralston
patent: 3304827 (1967-02-01), Bush
patent: 3476009 (1969-11-01), Markey
patent: 3948141 (1976-04-01), Shinjo
patent: 4020734 (1977-05-01), Bell
patent: 4072081 (1978-02-01), Curtis et al.
patent: 4149446 (1979-04-01), Spengler et al.
patent: 4322193 (1982-03-01), Stahl
patent: 4347024 (1982-08-01), Coldren
patent: 5015132 (1991-05-01), Turner et al.
patent: 5370483 (1994-12-01), Hood et al.
patent: 5769581 (1998-06-01), Wallace et al.

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