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:
Aug. 18, 1992
Filed:
Aug. 16, 1990
Stephanus A Mulder, Eindhoven, NL;
Paul N Faase, Eindhoven, NL;
Johannes H Tobben, Eindhoven, NL;
Eelco G Visser, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
An inductive device comprises a soft magnetic core which consists of two E-shaped core halves (1), each of which comprises three parallel limbs (5, 7) which are interconnected by a yoke (9). The core halves (1) are arranged against one another by way of the free ends of the limbs (5, 7), a coil former (3) being provided around the central limbs (7). The outer limbs (5) extend between an upper boundary plane (25) and lower boundary plane (27), which planes extend parallel to the longitudinal directions of the limbs (5, 7) and the yokes (9), the distance between said planes being determined by the height (x) of the outer limbs (5) which is greater than the height (y) of the central limbs (7). The lower boundary of the central limb (7) is situated above or below the boundary plane (27) a distance such that the symmetry plane (31) of the central limbs (7) which extends parallel to the boundary planes (25, 27), is situated halfway between the upper boundary plane (25) and a plane (33) which extends parallel to the boundary planes and is from 0.1 to 1 mm above the lower boundary of the coil former (3). A winding (29) provided on the coil former (3) occupies exactly the space between the upper side of the outer limits (5) and the lower side, thus minimizing the height of the device. Such device may be, for example, a transformer or a choke coil.