Nut member with tightness-indicating protrusions and...

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – With means to indicate application of predetermined... – Axially deformable member or portion

Reexamination Certificate

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Details

C411S184000, C411S187000, C411S239000, C411S237000, C411S223000, C411S229000, C411S227000

Reexamination Certificate

active

07014404

ABSTRACT:
A nut member has first and second end faces and corners, and is formed with a plurality of protrusions, each of which is disposed at a respective corner and each of which has a lateral inner face that extends from the second end face, and a plurality of recesses, each of which is indented inwardly from a respective corner and each of which is defined by a recess-defining wall. The recess-defining wall has a lateral outer face that extends from the first end face. Each protrusion is received in and meshes with a respective recess, and the lateral outer face is in face-to-face contact with the lateral inner face when two of the nut bodies are stacked and are tensioned on a screw bolt.

REFERENCES:
patent: 1901744 (1933-03-01), Glover
patent: 2167285 (1939-07-01), Smith
patent: 2570863 (1951-10-01), Rowe
patent: 2612647 (1952-10-01), Howe
patent: 2784930 (1957-03-01), Wernecke
patent: 2909205 (1959-10-01), Johnson
patent: 3194105 (1965-07-01), Gill
patent: 3285120 (1966-11-01), Kartiala
patent: 5370483 (1994-12-01), Hood et al.
patent: 5433567 (1995-07-01), Ito
patent: 6827537 (2004-12-01), Norman et al.
patent: EP 0833067 (1998-01-01), None

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