Magnetic pen holder

• US 4,643,604 A
• Filed: 05/16/1985
• Issued: 02/17/1987
• Est. Priority Date: 09/04/1984
• Status: Expired due to Fees

• Current Assignee: Bertin Enrico
• Original Assignee: Bertin Enrico
• Inventors: Enrico, Bertin
• Primary Examiner(s): Price, William
• Assistant Examiner(s): Foster, Jimmy G.
• Application Number:
  US06/734,727
• Time in Patent Office: 642 Days
• Field of Search: D19/77, D19/78, D19/80, D19/81, D19/83, D19/84, D19/85, 206/214, 206/224, 206/371, 206/818, 211/69.1, 211/69.2, 211/69.5-69.7, 248/206.5, 248/346, 335/302, 335/303, 335/306, 401/52, 401/88, 401/131, 401/195
• US Class Current: 401/131
• CPC Class Codes: B43K 29/00 Combinations of writing implements with other articles
• CPC Class Codes: B43M 99/003 with only one penholder
• CPC Class Codes: Y10S 206/818 Magnet
• CPC Class Codes: Y10S 211/01 Magnetic article holder

Abstract

Magnetic holder device for pens and the like. The device comprises a base provided with a cavity for introducing the front or writing end of a pen; a first annular-shaped permanent magnet is arranged in the base member around the aforesaid cavity, and a second permanent magnet on the pen is situated at a short distance from the tip end of the pen and the annular magnet; the magnetic polarities of the second magnet are orientated in an opposite direction to the polarities of the annular magnet so that the two magnetic fields interact to draw the pen towards the bottom of the base and to laterally support it in an upright position.

Claims

1. Magnetic supporting device for pens and the like, characterized by the fact that it comprises a pen and a base element, said base element being provided with a cavity for receiving the front end of the pen;

a first annular-shaped permanent magnet situated in the base element around and coaxially to the aforesaid cavity, said first magnet having north and south poles for providing a first magnetic field with flux lines; and

a second permanent magnet situated close to the front end of the pen, said second magnet having north and south poles for providing a second magnetic field with flux lines;

the second magnet having its magnetic polarities oriented in the opposite direction to the polarities of the annular magnet in the supporting base;

said pen having a rest position which it occupies when it is supported on said base element;

said first and second magnets being located where the flux lines of their magnetic fields interact when the pen is in its rest position to exert an axial force of attraction and a radial force of repulsion, said axial force of attraction having a direction which forces the pen axially against the base member, and said radial force of repulsion having a direction which holds the pen in its rest position.

2. Device as claimed in claim 1, characterized by the fact that the second magnet lies above and at a short distance from the annular magnet when the tip of the pen rests in the cavity of the supporting base.

3. Device as claimed in claim 1, characterized by the fact that the magnet in the pen has a smaller external diameter than the internal diameter of the annular magnet.

4. Device as claimed in claim 3, characterized by the fact that the magnet in the pen has an external diameter equal to approximately half the internal diameter of the annular magnet.

5. Device as claimed in claim 1, characterized by the fact that the ratio between the internal diameter of the annular magnet and the distance existing between the opposing faces of the two magnets ranges from 2.5 to 3.5 approximately.

6. Device as claimed in claim 1, characterized by the fact that the cavity for introducing the pen, in the supporting base, is provided on the bottom with a cone-shaped surface converging downwards.

7. Device as claimed in claim 1, characterized by the fact that the central cavity in the supporting base defines a rest point for supporting the writing tip of the pen, situated on a plane below the annular magnet.