Blanket shade for window frame

• US 4,802,523 A
• Filed: 07/13/1983
• Issued: 02/07/1989
• Est. Priority Date: 07/13/1983
• Status: Expired due to Fees

• Current Assignee: Magnet Technology, Inc.
• Original Assignee: Richard A. Scholten
• Inventors: Mosteller, Larry A., Scholten, Richard A.
• Primary Examiner(s): Britts, Ramon S.
• Assistant Examiner(s): Purol, David M.
• Application Number:
  US06/513,372
• Time in Patent Office: 2,036 Days
• Field of Search: 160/DIG. 16, 160/354, 160/368 R, 428/900, 428/DIG. 16, 24/303
• US Class Current: 160/354
• CPC Class Codes: A47H 2201/01 Magnets
• CPC Class Codes: A47H 23/02 Shapes of curtains; Selection of particular materials for curtains
• CPC Class Codes: A47H 23/04 Shapes of curtains
• CPC Class Codes: E06B 7/2314 characterised by the material
• CPC Class Codes: E06B 9/24 Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blindsoperating, guiding or securing devices or arrangements for roll-type closures E06B9/56; free-hanging flexible screens A47H23/00
• CPC Class Codes: F16B 2200/83 Use of a magnetic material
• CPC Class Codes: F16B 5/00 Joining sheets or plates , e.g. panels, to one another or to strips or bars parallel to them F16B17/00 takes precedence; by sticking together F16B11/00; dowel connections F16B13/00; pins, including deformable elements F16B19/00; covering of walls E04F13/00; fastening signs, plates, panels or boards to a supporting structure, fastening readily-detachable elements, e.g. letters to signs, plates, panels, or boards, G09F7/00
• CPC Class Codes: H01F 7/0215 Flexible forms, sheets

Abstract

A multiple-ply blanket window shade having magnetic strips embedded in the vertical edges of the shade and cooperating magnetic strips on the window frame. The magnetic strips are rubber-based, each having three poles running vertically and transversely spaced nominally on 1/4" centers, that is, magnetized on a magnetizing fixture with 1/4" wide poles.

Claims

1. A window and blanket shade combination comprising,

a window frame,

a stationary vertical magnetic strip on each side of said window frame,

a blanket shade attached to the top of said window frame, and covering said frame,

and a movable vertical magnetic strip disposed within said blanket shade along each edge thereof, said movable strips overlying said stationary strips when said shade is lowered,

said strips each having only three longitudinally-extending poles spaced transversely across the strip, the nominal pole spacing being three to five times the thickness of the strip,

one of said strips on each side of said frame having an N S N pole configuration, the corresponding movable strip having a S N S pole configuration, wherein each of the three poles in each of said strips is independent of the other, like poles in each strip being completely separated from each other by an unlike pole in the same strip.

2. A window and blanket shade combination as in claim 1 in which said strips are a rubber-based material having ferromagnetic particles embedded in the rubber,

said strips being formed of a plurality of segments each about 31/2 inches long, 1/2 inch wide and 1/16 inch thick.

3. In a window and blanket shade combination in which a window frame has stationary vertical magnetic strips on each side thereof and in which a blanket shade is suspended from the top of said window frame and has movable vertical magnetic strips along each edge thereof, said movable strips overlying said stationary strips when said shade is lowered to form with said window frame strips adhering pairs of strips, the improvement comprising,

said strips being 1/16" thick and magnetized with a magnetizing fixture having 1/4" pole spacing,

one strip of each pair having only three poles in a longitudinally-extending N S N pole configuration spaced transversely across the strip, the other strip of said pair having only three poles in a longitudinally-extending S N S pole configuration spaced transversely across the strip such that like poles in each strip are completely separated from each other by an unlike pole in each strip.