Research/Patents/US 5228795
US 5228795

SELF-TIGHTENING FITTING FOR ATTACHMENT OF METAL TO CARBON-CARBON STRUCTURES

Assignee

ROHR INDUSTRIES, INC.

Filed

Dec 27, 1989

Granted

Jul 20, 1993

Location

NORTH EAST MD US

Abstract

An attachment fitting for securing metal structures to carbon-carbon structures which tightens as temperature increases. The fitting is particularly useful in high temperature aerospace applications such as hypersonic aircraft. The fitting basically connects an upstanding carbon-carbon blade on a carbon-carbon structure to a metal clevis which fits snugly thereover. A ceramic bushing is fitted in a transverse hole in the blade. A transverse bolt hole extends through the clevis and bushing. A bolt in the bolt hole is tightened with one or more nuts to tightly press the clevis against the busing and blade. The bolt and nut material is selected to have a lower coefficient of thermal expansion than the clevis so that differential thermal expansion between clevis and bolt keeps the joint tight at elevated temperatures.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Sep 18, 1990

Rescinded

Oct 26, 1992

Duration

2 years, 1 month

Inventor

  • 1PAUL E. GRAY

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records