Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Washer structure – Including means for retaining washer to fastener
Reexamination Certificate
2005-05-31
2005-05-31
Miller, William L. (Department: 3677)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Washer structure
Including means for retaining washer to fastener
C411S368000, C411S432000, C411S338000
Reexamination Certificate
active
06899503
ABSTRACT:
An assembly of an internally threaded fastener and a stemmed washer is provided, such as for applications in which a standoff is desired between a washer and a mating externally threaded fastener. The stemmed washer includes a washer portion, a retaining portion and a standoff portion. The retaining portion interfaces with the internally threaded fastener to retain the fastener in the assembly. The stemmed washer may include a skirt which is plastically deformed to capture the fastener. The fastener may include a skirt which similarly plastically to mate with a retaining lip on the stemmed washer. The fastener and washer may be secured in the assembly to permit relative rotation of the fastener with respect to the washer.
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Anderson Jeffrey D.
Homfeldt Kent D.
Ward Michael E.
Fletcher Yoder
Illinois Tool Works Inc.
Miller William L.
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