Rough metallic locking washer

A washer and metal technology, applied in the direction of washers, locking fasteners, threaded fasteners, etc., to achieve good anchoring and enhanced bonding effects
CN104704249AInactive Publication Date: 2015-06-10NORD LOCK INT
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NORD LOCK INT
Publication Date
2015-06-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

Rough metallic locking washer The present invention relates to a metallic locking washer(10, 20, 20') intended for being mounted in a screw / nut system to engage between a nut and a bearing element, said metallic locking washer having a contact face (12, 14; 20, 30; 30', 32') suitable for coming into contact with one or the other of the nut and the bearing element, said contact face (12, 14; 30, 32; 30', 32') having a surface which is suitable for being brought along in friction against one or the other of the nut and the bearing element when the nut loosens. According to the invention said contact face is coated, by thermal projection of an additive material, with a rough coating forming a rough surface in order to enable an increase in the friction forces between the contact face (12, 14; 30, 32; 30', 32') of the metallic washer(10, 20, 20') and one or the other of the nut and the bearing element.
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Description

technical field

[0001] The present invention relates to a metal lock washer intended for installation in a screw / nut system. Background technique

[0002] In the field of assembly where screw / nut systems are used, it is required that the nuts do not loosen. In addition, a washer, for example with radial ridges, is interposed between the nut to be threaded and the element to be screwed through by the threaded shank member to increase friction between the ribbed washer, the element to be threaded and the nut. In this way, after the nut has been tightened, the washer is held with great force between the element to be screwed and the nut. In addition, loosening of the gasket, eg caused by vibrations, is precisely braked due to the radial ridges. The radial ridges actually increase the friction between the contacting surfaces.

[0003] Such radial ridges are also implemented on locking washers with two washer crowns. Such a locking washer comprises two washer crowns applied c...

Claims

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