Fastener assembly and method employing a flanged metal nut with a metal cup washer rotatably mounted thereon
First Claim
1. A fastener assembly comprising:
- a metal nut having an integral flange at one end; and
a metal cup washer rotatably mounted on the flange of the nut, with an outer disc surface of the flange adjacent to an inner disc surface of the washer, and with at least portions of a sidewall of the washer overlying the flange of the nut, wherein an outer disc surface of the washer, for engagement with a surface of a workpiece, has a plurality of grooves extending transversely to the circumference of the outer disc surface of the washer.
1 Assignment
0 Petitions
Accused Products
Abstract
A fastener assembly comprises a metal nut having an integral flange and a metal cup washer rotatably mounted on the flange, with an outer disc surface of the flange adjacent to an inner disc surface of the washer, and with portions of a sidewall of the washer overlying the flange to hold the washer captive on the flange. An outer disc surface of the washer, which engages a surface of a workpiece, has a plurality of grooves extending transversely to the circumference of the outer disc surface. The entire fastener assembly is coated, as a unit, with an anti-corrosive lubricant. The grooves provide a frictional force between the washer and the workpiece that exceeds the frictional force between the nut and the washer, but do not mar the workpiece surface.
38 Citations
13 Claims
-
1. A fastener assembly comprising:
-
a metal nut having an integral flange at one end; and
a metal cup washer rotatably mounted on the flange of the nut, with an outer disc surface of the flange adjacent to an inner disc surface of the washer, and with at least portions of a sidewall of the washer overlying the flange of the nut, wherein an outer disc surface of the washer, for engagement with a surface of a workpiece, has a plurality of grooves extending transversely to the circumference of the outer disc surface of the washer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method of making a fastener assembly that includes a nut having an integral flange at one end and a cup washer, comprising:
-
rotatably mounting the cup washer on the flange of the nut so that an outer disc surface of the flange is adjacent to an inner disc surface of the cup washer, so that at least portions of a sidewall of the cup washer overlie the flange, so that the mounting of the washer on the flange is sufficiently loose to allow the nut to move relative to the cup washer axially, laterally, and tiltingly by substantial amounts, and so that movement of the outer disc surface of the flange away from the inner disc surface of the cup washer provides a substantial space between the outer disc surface of the flange and the inner disc surface of the cup washer when said portions of the sidewall of the cup washer are contiguous with the flange;
providing a plurality of grooves in an outer disc surface of the cup washer transversely to the circumference thereof; and
coating the entire fastener assembly, as a unit, with an anti-corrosive lubricant material. - View Dependent Claims (11, 12, 13)
-
Specification