The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 16, 1990
Filed:
Jun. 28, 1988
H O Davis, Alameda, CA (US);
James M Barrier, Anaheim Hills, CA (US);
Kaiser Aerotech, San Leandro, CA (US);
Abstract
Reinforced composite tubes are formed by rolling a flat reinforcement fabric onto a cylindrical or conical mandrel under tension. By pre-impregnating the fabric with a suitable matrix precursor or by serving the individual threads of the fabric with a thermoplastic, the fabric may be compressed by applying heat and pressure during the rolling process. After rolling, the resulting prepreg is cured in a suitable vacuum bag, also under heat and pressure. The cured prepreg may then be converted by pyrolysis and densified by repeated impregnation and converting steps. The resulting composite tubes are substantially free from mechanical defects which would reduce their strength.