×

Compensation of electromagnetic distortion caused by metal mass

  • US 5,760,335 A
  • Filed: 08/01/1994
  • Issued: 06/02/1998
  • Est. Priority Date: 08/02/1993
  • Status: Expired due to Term
First Claim
Patent Images

1. A shield for electromagnetic radiation comprising:

  • a first layer having a high magnetic permeability; and

    a second layer having a high electrical conductivity,at least one of said first and second layers having a plurality of apertures formed therein, said apertures being operative to reduce the effect of the shield on the electromagnetic field outside the shield,wherein said plurality of apertures comprise a plurality of generally "U"-shaped slots,wherein said shield has a generally cylindrical shape of a given length,wherein said first layer comprises an inner portion, and said second layer comprises an outer portion of said generally cylindrical shape,wherein each of said "U"-shaped slots comprises a lengthwise slit and two circumferential slits in said second layer,wherein said circumferential slits are generally perpendicular to said lengthwise slit and communicate with the ends of said lengthwise slit, andwherein said two circumferential slits are separated from a nearby lengthwise slit of an adjacent "U"-shaped slot by a solid conducting material surface.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×