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. 19, 1982
Filed:
Jun. 23, 1980
Xenophon Glavas, Roanoke, VA (US);
Robert E Thompson, Roanoke, VA (US);
International Telephone and Telegraph Corporation, New York, NY (US);
Abstract
Th collapsible mandrel includes a core upon which the coil is wound removably secured to a pair of spaced parallel flanges. The core includes a pair of hollow, partially semicircular members each having an arc length less than 180.degree. and a pair of transition members each disposed to fill a different one of two spaced gaps between the pair of hollow members. Each of the hollow members has a plurality of spaced grooves on the outer surface thereof substantially parallel to the pair of flanges to receive the material which is to be wound to provide the coil. A shaft is disposed coaxially of the axis of the core extending between the pair of flanges internally of the core. The shaft includes an arrangement to releasably lock the core and the pair of flanges into an integral unit when the coil is being wound. Upon completion of the winding of the coil, the shaft and the pair of flanges are unlocked and removed. Then the pair of transition members are removed and the pair of hollow members are moved toward each other and removed from the formed coil.