Research/Patents/US 4934580
US 4934580

METHOD OF MAKING SUPERPLASTICALLY FORMED AND DIFFUSION BONDED ARTICLES AND THE ARTICLES SO MADE

Assignee

BARNES GROUP, INC.

Filed

Dec 27, 1988

Granted

Jun 19, 1990

Location

EATON RAPIDS MI US

Abstract

Methods of making superplastically formed and diffusion bonded articles are disclosed as well as the articles made from such methods. Metal sheets are superplastically formed and diffusion bonded in a manner such that pillows are formed on respective outer surfaces thereof, providing a cellular structure interconnected by channels permitting control of gas pressure with the cells. The cellular structure can, in one embodiment, be twisted and the cells can be inflated through superplastic forming. The twisted cellular structure is particularly useful as an intermediate stiffener for an airfoil.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Nov 9, 1989

Rescinded

Dec 13, 1989

Duration

1 month

Inventor

  • 1MARVIN M. SUTTON

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