IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0119265
(2002-04-09)
|
발명자
/ 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
7 |
초록
▼
An apparatus and method for collecting dust is disclosed. Preferably, the dust to be collected is chalk dust. The apparatus includes a housing supporting an eraser head and having a cavity in fluid communication with a suction device. Interposed between the cavity and the suction device is a collect
An apparatus and method for collecting dust is disclosed. Preferably, the dust to be collected is chalk dust. The apparatus includes a housing supporting an eraser head and having a cavity in fluid communication with a suction device. Interposed between the cavity and the suction device is a collection chamber assembly. A matrix of apertures in the front wall are selectively openable and closeable by a controller in response to the orientation of the eraser. When the eraser is moved across a chalkboard to create airborne chalk dust, the apertures are selectively opened by the controller, the suction device urging the airborne chalk dust through the apertures, through the cavity, and into the collection chamber assembly where it is filtered and stored. The method includes the steps of providing the apparatus of the invention, energizing the suction device, and moving the eraser across a chalkboard to collect chalk dust.
대표청구항
▼
1. An eraser for collecting dust released from a surface by said eraser, comprising:(a) a housing having a front wall with an interior surface and an exterior surface and a back wall, said front and back walls being connected by a sidewall to define a cavity;(b) an eraser head located along a portio
1. An eraser for collecting dust released from a surface by said eraser, comprising:(a) a housing having a front wall with an interior surface and an exterior surface and a back wall, said front and back walls being connected by a sidewall to define a cavity;(b) an eraser head located along a portion of said exterior surface of said front wall for releasing chalk dust from said surface;(c) a selectively energizable suction device in fluid communication with said cavity;(d) a collection chamber assembly interposed between said cavity and said suction device for admitting airborne dust, filtering said dust from air, storing said dust, and expelling filtered air;(e) a matrix of selectively openable and closable apertures extending through said front wall;(f) a controller for controlling the opening and closing of said matrix of apertures in response to the orientation of said housing as it confronts said surface,whereby when said eraser is moved across said surface to create airborne dust, said aperture openings are selectively opened by said controller and said suction device urges said airborne dust through said matrix of apertures, through said cavity, and into said collection chamber assembly. 2. The eraser of claim 1 wherein said surface is a horizontal surface. 3. The eraser of claim 1 wherein said surface is a vertical surface. 4. The eraser of claim 3 wherein said vertical surface is a chalkboard and said dust is chalk dust. 5. The eraser of claim 1, further including one or more panels controlled by said controller, which one or more of slidably open and close or pivotally open and close said apertures of said matrix. 6. The eraser of claim 1, wherein said matrix of apertures includes a first set of apertures and a second set of apertures, said first set of apertures being located at a lower position than said second set of apertures and being preferentially closed to a greater extent than said second set of apertures when said eraser is in a vertical orientation. 7. The eraser of claim 1 wherein said housing is formed of plastic. 8. The eraser of claim 1 wherein said eraser head has a given size selected to maximize the amount of chalk erased from a chalkboard. 9. The eraser of claim 1 wherein said suction device comprises:a selectively energizable motor connected to said cavity;a power supply connected to said motor; anda blower connected to said motor to create a vacuum when said motor is energized. 10. The eraser of claim 1 wherein said suction device comprises:a selectively energizable cyclone mechanism connected to said cavity; anda power supply connected to said cyclone mechanism. 11. A method for collecting dust released from a surface, which comprises the steps of:(a) providing an eraser including,(1) a housing having a front wall with an interior surface and an exterior surface and a back wall, said front and back walls being connected by a sidewall to define a cavity,(2) an eraser head located along a portion of said exterior surface of said front wall for releasing dust from a surface,(4) a selectively energizable suction device in fluid communication with said cavity,(3) a collection chamber assembly interposed between said cavity and said suction device for admitting airborne dust, filtering said dust from air, storing said dust, and expelling filtered air,(4) a matrix of selectively openable and closable apertures extending through said front wall, and(5) a controller for controlling the opening and closing of said matrix of apertures in response to the orientation of said housing as it confronts said surface;(c) energizing said suction device; and(d) moving said eraser across said surface to release said dust therefrom, so that said suction device urges said dust through said matrix of apertures, through said cavity, and into said collection chamber assembly. 12. The method of claim 11 wherein said surface said eraser is moved across is a chalkboard and said dust released is chalk dust. 13. The method of claim 12 wherein said eraser is provided further including one or more panels controlled by said controller, which one or more of slidably open and close or pivotally open and close said apertures of said matrix. 14. The method of claim 12 wherein said eraser is provided with said matrix of apertures including a first set of apertures and a second set of apertures, said first set of apertures being located at a lower position than said second set of apertures and being preferentially closed to a greater extent than said second set of apertures when said eraser is in a vertical orientation. 15. The method of claim 11 wherein said eraser is provided with said suction device comprising:a selectively energizable motor connected to said cavity;a power supply connected to said motor; anda blower connected to said motor to create a vacuum when said motor is energized. 16. An eraser for collecting chalk dust, comprising:(a) a housing having a front wall with an exterior surface and a back wall, said front and back walls being connected by a sidewall to define an cavity;(b) an eraser head located along a portion of said exterior surface of said front wall for erasing chalk from a chalkboard;(c) a selectively energizable suction device in fluid communication with said cavity;(d) a collection chamber assembly interposed between said cavity and said suction device for admitting airborne chalk dust, filtering said chalk dust from air, storing said chalk dust, and expelling filtered air;(e) a first set of apertures and a second set of apertures, each aperture of said first and second sets extending through said front wall;(f) a first set of panels and a second set of panels, each mechanically connected to a weight system for selectively opening and closing said first and second sets of apertures, respectively. 17. The eraser of claim 16, wherein said suction device comprises:a selectively energizable motor connected to said cavity;a power supply located within said cavity and electrically connected to said motor; anda blower located within said cavity and connected to said motor to create a vacuum when said motor is energized. 18. The eraser of claim 17 wherein said back wall of said housing conforms to the shape of said motor and said blower to provide a hand graspable portion. 19. The eraser of claim 16 wherein:said first set of panels includes a first panel and a second panel; andsaid weight system comprises,a lever arm weight extending between a first end and a second end, said lever arm weight being freely movable such that it falls downward under the force of gravity when said housing is in a vertical orientation,a weight support located between said first and second ends for supporting said lever arm weight,a first pivot support and a second pivot support,a first rotatable member connected to said first end of said lever arm weight, said first pivot support, and said first panel, anda second rotatable member connected to said second end of said lever arm weight, said second pivot support, and said second panelwhereby when said lever arm weight falls under the force of gravity, said first rotatable member rotates about said first pivot support to close said first panel and said second rotatable member rotates about said second pivot support to open said second panel. 20. The eraser of claim 19 wherein:said second set of panels includes a third panel and a fourth panel; andsaid weight support extends transversely with respect to said lever arm weight and has a first segment and a second segment, said first and second segments being pivotally connected to said third and fourth panels at first and second pivot points, respectively, such that when said lever arm weight falls downward under the force of gravity, said third and fourth panels pivot about said first and second pivot points to partially open said second set of apertures.
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