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US 4,554,703 AGranted
Magnetic eraser dust collector
AssigneeTaiyo Yuden Co., Ltd.
InventorShouzo Matuki
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AssigneeTaiyo Yuden Co., Ltd.
InventorShouzo Matuki
Estimating the term…
A device for use with an eraser of a rubber composition having magnetic particles dispersed therein. The device has a permanent magnet for attracting the magnetic dust created by use of the eraser. For the ready removal of the collected dust the device further comprises a shield normally enclosing the magnet. When held close to or in direct contact with a dust collecting wall forming a part of the shield, the magnet attracts eraser dust therethrough. The eraser dust attached to the dust collecting wall can be readily released, as into a suitable receptacle such as a trash can, as the magnet is moved away from the dust collecting wall as by being pulled out of the shield. The device may incorporate a magnetic eraser to provide a convenient eraser/dust collector combination, as in some embodiments disclosed herein. Additional embodiments suggest the combined use of a brush for collecting eraser dust, and the provision of an open space for confining the collected dust on the dust collecting wall of the shield.
A device for collecting magnetic eraser dust comprising a permanent magnet for attracting magnetic eraser dust, a shield normally enclosing the permanent magnet to prevent direct adhesion of the eraser dust thereto and including a dust collecting wall having a thickness allowing the permanent magnet to attract the eraser dust therethrough, the permanent magnet being movable relative to the shield between a working position for attracting the eraser dust through the dust collecting wall of the shield, with the consequent adhesion of the eraser dust to the dust collecting wall of the shield, and a retracted position away from the dust collecting wall for releasing the collected eraser dust therefrom, and an eraser of a rubber composition having magnetic particles uniformly dispersed therein, the eraser being attached to the permanent magnet so as to at least partly project outwardly from the shield.
A device for collecting magnetic eraser dust comprising a permanent magnet for attracting magnetic eraser dust;
Dependencies are inferred from the claim text.