US3662303A - Instant magnetizer and demagnetizer - Google Patents

Abstract

An elongated non-magnetic body has longitudinal and transverse intersecting bores. Two bar magnets are disposed in aligned end to end position in the longitudinal bore and are biased toward each other by spring means. The abutting ends are oppositely poled.

Description

[ 1 May 9,1972

United States Patent Arllof References Cited UNITED STATES PATENTS [72] Inventor: Anatoli Arllof, 3641 E. 8th St., PO. Box 3,467,926 Smith...................................,.335/284 2301 l, Los Angeles, Calif. 90023 Mar. 8, 1971 Primary E.\'aminerGeorge Harris Attorney-Richard S. Shreve, Jr.

22 Filed:

[57] ABSTRACT An elongated non-magnetic body has longitudinal and transverse intersecting bores. Two bar magnets are disposed in Appl. No.:

aligned end to end position in the longitudinal bore and are biased toward each other by spring means. The abutting ends are oppositely poled.

606 ONO mu arm 3 v0 6 Claims, 4 Drawing Figures PATENTEDMAY 9 m2 lNVErw mR. 44/4/70 4(440; MUM

INSTANT MAGNETIZER AND DEMAGNETIZER BACKGROUND Minute ferrous metal particles, such as iron filings are frequently prevalent wherever tools are employed, and when these accumulate on the point of the tool they are annoying and even interfere with the operation of the tool.

FIELD OF THE INVENTION My invention is apparatus which can be used for the rapid magnetization of a previously unmagnetized magnetic member as well as the rapid demagnetization of a previously magnetized magnetic member.

SUMMARY OF THE INVENTION To this end I provide an elongated non-magnetic body having a cavity, preferably with longitudinally and transversely extending bores. A pair of bar magnets are disposed in the cavity, preferably in aligned end to end position in the longitudinal bore with abutting ends being oppositely poled, these abutting ends being accessible from the transverse bore. Spring means in the body spring bias the magnets toward each other. A magnetic member can be extended in the transverse bore into the region where the ends of both magnets are in abutment to force same apart and moved back and forth therein. If the member, prior to this action, is not magnetized, it will become same. If the member is magnetized and its field acts in opposition to the field between the two magnets, the member will be demagnetized, This action of demagnetization can be used if the bar magnets are disposed with one of them reversed in position.

BRIEF DESCRIPTION OF THE DRAWINGS In the drawings:

FIG. I is a perspective view of my invention in use;

FIG. 2 is a view taken along line 22 in FIG. 1;

FIG. 3 is an exploded view of the parts used in my invention; and

FIG. 4 is a detail view showing a different magnetic orientation of the magnets used in my invention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS Referring now to FIGS. 1-4, first and second bar magnets l0 and 12 each have a North pole at one end and a South pole at the other. In magnet 10, the N pole end has a peripheral beveled edge 14. In magnet 12 the S pole end has a bevelled edge. These magnets are aligned with a common axis in end to end relationship in a longitudinal bore I6 of a non-magnetic body 18. A transverse bore 20 in the body intersects bore 16. Removable end plugs 22 are disposed in opposite ends of bore 16 and are held in place by removable pins 32 which extend through transverse recesses 24 in the body into mating slots 26 in the plugs. A separate coil spring 28 is disposed between each plug and an end of the corresponding magnet whereby the abutting ends of the magnets are exposed in bore 20.

In use, a magnetic member such as blade 30 of a screwdriver 32 is interposed between the abutting ends, which are forced slightly apart by this action, and moved back and forth. When the abutting ends are oppositely poled, as shown in FIGS. 1-3, the member can be magnetized. When the abutting ends are like poled and a repulsion field rather than an attraction field is established, the member, if magnetized, can be demagnetized.

While I have described my invention with particular reference to the drawings, such is not to be considered as transverse intersecting bore; first and second bar magnets disposed 1n the cavity means with abutting ends being exposed in the transverse bore; and

spring means in the cavity means physically urging said magnets toward each other.

2. The combination set forth in claim 1, in which said cavity means comprises longitudinal bores in end to end relation, and

said urging means are physically acting springs.

3. The combination as set forth in claim 2 wherein each magnet has an N pole at one end and an S pole at the other.

4. The combination as set forth in claim 3 wherein the N pole end of one magnet has a bevelled edge and the S pole end of the other magnet has a bevelled edge.

5. The combination as set forth in claim 4 wherein at least one of the abutting ends has a bevelled edge.

6. The combination as set forth in claim 5 wherein both abutting ends have bevelled edges.

Claims (6)

1. In combination: AN ELONGATED NON-MAGNETIC BODY HAVING CAVITY MEANS AND A TRANSVERSE INTERSECTING BORE; FIRST AND SECOND BAR MAGNETS DISPOSED IN THE CAVITY MEANS WITH ABUTTING ENDS BEING EXPOSED IN THE TRANSVERSE BORE; AND SPRING MEANS IN THE CAVITY MEANS PHYSICALLY URGING SAID MAGNETS TOWARD EACH OTHER.

2. The combination set forth in claim 1, in which said cavity means comprises longitudinal bores in end to end relation, and said urging means are physically acting springs.

3. The combination as set forth in claim 2 wherein each magnet has an N pole at one end and an S pole at the other.

4. The combination as set forth in claim 3 wherein the N pole end of one magnet has a bevelled edge and the S pole end of the other magnet has a bevelled edge.

5. The combination as set forth in claim 4 wherein at least one of the abutting ends has a bevelled edge.

6. The combination as set forth in claim 5 wherein both abutting ends have bevelled edges.

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