Apparatus for accurately preloading auger attachment means for frangible protective material

US4407165A · kind A · utility

Assignee

• The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · US

Inventors

• Alan M. Administrator of the National Aeronautics and Space Lovelace · San Marino, US
• Kenneth E. Wood · Brentwood, US

Key dates

• Filing date: Mar 30, 1981
• Grant date: Oct 4, 1983
• Expiry date: Mar 30, 2001

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49863
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Apparatus for preloading a spring loaded threaded member. The apparatus is formed of three telescoping tubes. The innermost tube has means to prevent rotation of the threaded member. The middle tube is threadedly engaged with the threaded member and by axial movement applies a preload thereto. The outer tube engages a nut which may be rotated to retain the threaded member in axial position to maintain the preload.