Graduated-Load Spring Washer System for Screws and Threaded Fasteners.

reportActive / Technical Report | Accession Number: ADD013915 | Need Help?

Abstract:

The present invention relates to spring washers and particularly to a graduated-load spring washer having a tailored configuration in screw or threaded fastener systems that will maintain large preloading and screw-locking force before, during and after joint thickness change due to material stress relaxation, creep or wear. The graduated-load spring washer system of the present invention can be tailored to provide a precise clamping force due to its similarity to a single turn coil spring. The present device has the capability to provide for small loads as a single turn coil spring or large loads due to its deflection similar to a Belleville washer. Patent application. jes

Author(s):
Rose, James D.
Author Organization(s):
DEPARTMENT OF THE NAVY WASHINGTON DC
Descriptive Note:
Patent Application, Filed 17 Aug 88,
Pagination:
0021

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
PAT-APPL-233 291
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*FASTENINGS, *PATENT APPLICATIONS, *SCREWS, CLAMPS, COILS, CREEP, DEFLECTION, MATERIALS, PRECISION, SCREW THREADS, SPRINGS, STRESS RELAXATION, THICKNESS, WASHERS(SPACERS)
Field(s)/Group(s):
Couplers, Fasteners and Joints
Report Date:
1988 Aug 17