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US 6,386,927 B2Granted
Screw fastening structure and nut member
AssigneesNissan Motor Co., Ltd., Fuse Rashi, Co., Ltd.
InventorsRyoichi Nakayama, Shinji Nakano
Life of this patent
Estimating the term…
Abstract
A conductive male thread (22) has a thrust bearing flank (22a) coated with an insulating paint layer (23), and a conductive female thread (12) has a thrust bearing flank (12a) formed with a conductive projection (13) to break through the paint layer (23) and bite in that flank (22a).
Claims15
A screw fastening structure comprising:
- a conductive male thread having a first flank covered with an insulating paint coat;
- a conductive female thread having a second flank;
- and
- an electric contact electrically interconnecting the first and second flanks through the paint coat, the electric contact comprising a conductive projection integrally formed on the second flank and configured to cut through the paint coat, as the male and female threads are screwed.
1 more element
A screw fastening structure comprising:
- a conductive male thread having a first flank wholly coated with an insulating paint layer;
- a conductive female thread having a second flank;
- and
- an electric contact electrically interconnecting the first and second flanks through the paint coat, the electric contact comprising conductive projection means integrally formed on the second flank for cutting through the paint layer, as the male and female threads are screwed.
1 more element
Dependencies are inferred from the claim text.