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. 15, 1991
Filed:
Jul. 05, 1990
Robert E Anderson, Huntington Station, NY (US);
Leonard M Poveromo, Northport, NY (US);
Grumman Aerospace Corporation, Bethpage, NY (US);
Abstract
A technique is provided for removing foam mandrel material from a stiffener section of a composite structural member as is employed in lightweight aircraft skin structures. The technique involves the direct pressure glass bead blasting of the mandrel material. By mounting a blasting nozzle within a rubber hose of larger diameter, an airstream containing glass beads may be directed outwardly through the nozzle while evacuating pressure is created in an annular passageway between the hose and the nozzle to evacuate mandrel foam particles as well as spent glass beads. The result is a clean channel within the stiffener section.