Magnetic eraser dust collector
Patent 4554703 Issued on November 26, 1985. Estimated Expiration Date: 
January 19, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 19, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2417762 2528709 2733948 2976075 3105257 InventorAssigneeApplicationNo. 06/572184 filed on 01/19/1984US Classes:15/424, Eraser209/215, Special application294/65.5, MAGNET7/901MAGNETIC FEATUREExaminersPrimary: Roberts, Edward L.Attorney, Agent or FirmInternational ClassesB43L 19/00 (20060101)B03C 1/02 (20060101) B03C 1/28 (20060101) Foreign Application Priority Data1983-02-10 JPAbstractA 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. | |
