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:
Dec. 12, 1989
Filed:
Dec. 03, 1987
Cornelis W Sillen, Eindhoven, NL;
U.S.Philips Corp., New York, NY (US);
Abstract
Magnetic head, comprising a magnetic core provided by two core limbs (1, 3) formed a ferrite, two cladding layers (11) of a magnetic material provided on the core limbs and having a higher saturation magnetization than the ferrite, a non-magnetic gap (9) present between the cladding layers, and a winding aperture (5) accommodating an electric coil (7). The gap is composed of two insulation layers (13) of an electrically insulating material provided on the cladding layers and having a greater mechanical hardness than the other layers of the gap, two first layers (15) of a first metallic material provided on the inslation layers and two second layers (17) of a second metallic material provided on the first layers and being bonded to each other.