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:
Feb. 24, 1976
Filed:
Dec. 18, 1974
Charles W Smith, Jr, Fairview, PA (US);
Franz Zimmerman, Erie, PA (US);
Autoclave Engineers, Inc., Erie, PA (US);
Abstract
A gas pressure bonding furnace having a convection shield with (1) monolithic tubular refractory insulation having its upper end surrounding the work receiving hot zone of the furnace and its lower end depending to a cool zone, (2) an impervious tubular metal shell surrounding the tubular insulation and holding it under compression by differential thermal expansion, (3) a cover closing the top of the shell by a gas tight gasket seal and (4) a piston actuated by the gas working pressure to hold the cover closed. In a preferred form, the insulation is cast in the shell and the composition is an alumina cement with embedded alumina balloons.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile