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:
Nov. 10, 1987
Filed:
Apr. 16, 1986
Kou C Lin, Hermitage, PA (US);
Charles E Burkhardt, Garden City, SC (US);
Harry R Sheppard, Hermitage, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A method of constructing a magnetic core from groups of amorphous metal laminations, with the groups being defined by flattening sheets which are interspersed in a stack of amorphous laminations during a magnetic stress-relief anneal cycle. The stack of laminations is compressed with a pressure of at least about 4 psi, but not enough pressure to metallurgically bond adjacent laminations. The compression step is applied to the stack of laminations at least during the time the stack is at the elevated soaking temperature of the stress-relief anneal cycle. The flattened laminations are used to construct a magnetic core having an improved space factor and reduced sensitivity to core clamping pressures.