A filtration arrangement of a vacuum cleaner includes a floor-engaging base unit, a body portion pivotally mounted on the base unit and a suction motor/fan assembly located in either the base unit or body portion. A dustcup is mounted on the body portion and is in fluid communication with a first ai
A filtration arrangement of a vacuum cleaner includes a floor-engaging base unit, a body portion pivotally mounted on the base unit and a suction motor/fan assembly located in either the base unit or body portion. A dustcup is mounted on the body portion and is in fluid communication with a first air path so as to receive dirt laden air therefrom. A cyclonic member is disposed over the dustcup and is effective for imparting rotational motion to the dirt laden air entering the dustcup. An air tube is mounted centrally within the dustcup and extends from the bottom of the dustcup to an area near the top of the dustcup. A removable filter member is disposed over the top portion of the air tube. The removable filter has a central opening that cooperatively engages the top portion of the air tube to establish a second air path that extends from inside the dustcup to outside atmosphere through the suction motor/fan assembly.
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1. A vacuum cleaner with an improved filtration arrangement, comprising:a) a floor engaging base unit;b) a body portion pivotally mounted on said base unit;c) a suction motor/fan assembly mounted in one of the base unit and body portion;d) a dust cup mounted on and detachable from the body portion,
1. A vacuum cleaner with an improved filtration arrangement, comprising:a) a floor engaging base unit;b) a body portion pivotally mounted on said base unit;c) a suction motor/fan assembly mounted in one of the base unit and body portion;d) a dust cup mounted on and detachable from the body portion, the dust cup having a hollow, central air tube affixed to and extending upward from a bottom end of the dust cup to approximately the height of the top of a sidewall of the dust cup;e) a filter assembly having a filter medium, the filter assembly:i) being positioned within the dust cup, wherein the filter assembly is entirely located at a top portion of the dust cup,ii) having an opening that accepts a substantial length of an upper portion of the air tube, with a bottom portion of the air tube remaining uncovered, andiii) being removable from the air tube;f) a cyclonic cover member removably covering the dust cup and the filter assembly within the dust cup; andg) a first air path for communicating dirt laden air from the base unit to the cyclonic cover member; andwherein the cyclonic cover member:i) is removably disposed over the top of and sealed against the dust cup,ii) is engaged with the top of the filter assembly,iii) is detachable from the body portion together with the filter assembly and the dust cup, andiv) has a helical underside surface forming a downward facing helical channel opening into the upper end of the dust cup, the downward facing helical channel spiraling dirt laden air toward the bottom of the dust cup; andwherein the dirt laden air flows cyclonically in the dust cup and to the filter medium of the filter assembly, with an inside portion of the filter assembly and the air tube forming at least part of a second air path from inside the filter assembly down to the suction motor/fan assembly. 2. The vacuum cleaner with an improved filtration arrangement according to claim 1, wherein the air tube is molded integrally with the dust cup. 3. The vacuum cleaner with an improved filtration arrangement according to claim 1, wherein the air tube is a separate air tube that is affixed inside the dust cup. 4. The vacuum cleaner with an improved filtration arrangement according to claim 1, wherein the filter assembly comprises a lower filter support member positioned between the air tube and the filter medium, the lower filter support member having an opening that accepts an upper portion of the air tube so as to ensure a secure fitting relationship between the air tube and the filter support member. 5. The vacuum cleaner with an improved filtration arrangement according to claim 4, wherein the opening of the lower filter support member is formed in part by flexible grippers that engage an upper portion of the air tube. 6. The vacuum cleaner with an improved filtration arrangement according to claim 1, wherein the filter medium of the filter assembly comprises a pleated filter medium. 7. The vacuum cleaner with an improved filtration arrangement according to claim 1, wherein the suction motor/fan assembly is mounted in the body portion at a position directly beneath the dust cup. 8. The vacuum cleaner with an improved filtration arrangement according to claim 1, further comprising a final filter disposed between the suction motor/fan assembly and atmosphere. 9. The vacuum cleaner with an improved filtration arrangement according to claim 1, further comprising a HEPA filter disposed between the suction motor/fan assembly and atmosphere. 10. The vacuum cleaner with an improved filtration arrangement according to claim 1, wherein the filter assembly comprises an upper filter support member positioned between the cyclonic cover member and the filter medium. 11. The vacuum cleaner with an improved filtration arrangement according to claim 1, wherein the filter assembly comprises a lower filter support member positioned between the air tube and the filter medium, the lower filter support member having an opening that accepts an upper portion of the air tube so as to ensure a secure fitting relationship between the air tube and the filter support member, and wherein the filter assembly further comprises an upper filter support member positioned between the cyclonic cover member and the filter medium. 12. A vacuum cleaner with an improved filtration arrangement, comprising:a) a floor engaging base unit;b) a body portion pivotally mounted on said base unit;c) a suction motor/fan assembly mounted in the body portion at a position directly beneath the dust cup;d) a dust cup mounted on and detachable from the body portion, the dust cup having a hollow, central air tube affixed to and extending upward from a bottom end of the dust cup to approximately the height of the top of a sidewall of the dust cup, wherein the dust cup comprises an external rib portion formed at a bottommost portion of the dust cup, the rib portion of the dust cup contacting a gasket member disposed between the suction motor/fan assembly and the dust cup to provide an airtight seal between the dust cup and suction motor/fan assembly;e) a filter assembly having a filter medium, the filter assembly:i) being positioned within the dust cup,ii) having an opening that accents a substantial length of an upper portion of the air tube, with a bottom portion of the air tube remaining uncovered, andiii) being removable from the air tube;f) a cyclonic cover member removably covering the dust cup and the filter assembly within the dust cup; andg) a first air path for communicating dirt laden air from the base unit to the cyclonic cover member, wherein the cyclonic cover member:i) is removably disposed over the top of and sealed against the dust cup,ii) is engaged with the top of the filter assembly,iii) is detachable from the body portion together with the filter assembly and the dust cup, andiv) has a helical underside surface forming a downward facing helical channel opening into the upper end of the dust cup, the downward facing helical channel spiraling dirt laden air toward the bottom of the dust cup, wherein the dirt laden air flows cyclonically in the dust cup and to the filter medium of the filter assembly, with an inside portion of the filter assembly and the air tube forming at least part of a second air path from inside the filter assembly down to the suction motor/fan assembly. 13. A vacuum cleaner with an improved filtration arrangement, comprising:a) a floor engaging base unit;b) a body portion pivotally mounted on said base unit;c) a suction motor/fan assembly mounted in one of the base unit and body portion;d) a dust cup mounted on and detachable from the body portion, the dust cup having a hollow, central air tube affixed to and extending upward from a bottom end of the dust cup to approximately the height of the top of a sidewall of the dust cup;e) a filter assembly having a filter medium, the filter assembly:i) being positioned within the dust cup,ii) having an opening that accepts a substantial length of an upper portion of the air tube, with a bottom portion of the air tube remaining uncovered, andiii) being removable from the air tube;f) a cyclonic cover member removably covering the dust cup and the filter assembly within the dust cup;g) a first air path for communicating dirt laden air from the base unit to the cyclonic cover member, wherein the cyclonic cover member:i) is removably disposed over the top of and sealed against the dust cup,ii) is engaged with the top of the filter assembly,iii) is detachable from the body portion together with the filter assembly and the dust cup, andiv) has a helical underside surface forming a downward facing helical channel opening into the upper end of the dust cup, the downward facing helical channel spiraling dirt laden air toward the bottom of the dust cup, wherein the dirt laden air flows cyclonically in the dust cup and to the filter medium of the filter assembly, with an inside portion of the filter assembly and the air tube formin g at least part of a second air path from inside the filter assembly down to the suction motor/fan assembly; andh) a filter-in-place member that cooperatively engages a portion of the filter assembly so as to prevent a user from reattaching the dust cup and the cyclonic cover member to the body portion unless the filter assembly is in place on the air tube. 14. The vacuum cleaner with an improved filtration arrangement according to claim 13, wherein the filter-in-place member comprises a filter-in-place arm that contacts the filter assembly in a dead air region formed by at least one gasket. 15. A vacuum cleaner with an improved filtration arrangement, comprising:a) a floor engaging base unit;b) a body portion pivotally mounted on said base unit;c) a suction motor/fan assembly mounted in one of the base unit and body portion;d) a dust cup mounted on and detachable from the body portion, the dust cup having a hollow, central air tube affixed to and extending upward from a bottom end of the dust cup to approximately the height of the top of a sidewall of the dust cup;e) a filter assembly having a filter medium, the filter assembly:i) being positioned within the dust cup,ii) having an opening that accepts a substantial length of an upper portion of the air tube, with a bottom portion of the air tube remaining uncovered, andiii) being removable from the air tube;f) a cyclonic cover member removably covering the dust cup and the filter assembly within the dust cup, wherein the filter assembly further comprises an upper filter support member positioned between the cyclonic cover member and the filter medium and further wherein the cyclonic cover member comprises a filter-in-place member that cooperatively engages the upper filter support member so as to prevent a user from reattaching the dust cup and the cyclonic cover member to the body portion unless the filter assembly is in place on the air tube; andg) a first air path for communicating dirt laden air from the base unit to the cyclonic cover member, wherein the cyclonic cover member:i) is removably disposed over the top of and sealed against the dust cup,ii) is engaged with the top of the filter assembly,iii) is detachable from the body portion together with the filter assembly and the dust cup, andiv) has a helical underside surface forming a downward facing helical channel opening into the upper end of the dust cup, the downward facing helical channel spiraling dirt laden air toward the bottom of the dust cup, wherein the dirt laden air flows cyclonically in the dust cup and to the filter medium of the filter assembly, with an inside portion of the filter assembly and the air tube forming at least part of a second air path from inside the filter assembly down to the suction motor/fan assembly. 16. The vacuum cleaner with an improved filtration arrangement according to claim 15, wherein the filter-in-place member comprises a filter-in-place arm that contacts the upper filter support member. 17. The vacuum cleaner with an improved filtration arrangement according to claim 15, wherein the filter-in-place member comprises a filter-in-place arm that contacts the upper filter support member in a dead air region formed by at least one gasket between the upper support member and the cyclone cover member. 18. A vacuum cleaner with an improved filtration arrangement, comprising:a) a floor engaging base unit;b) a body portion pivotally mounted on said base unit;c) a suction motor/fan assembly mounted in one of the base unit and body portion;d) a dust cup mounted on and detachable from the body portion, the dust cup having a hollow, central air tube affixed to and extending upward from a bottom end of the dust cup to approximately the height of the top of a sidewall of the dust cup;e) a filter assembly having a filter medium, the filter assembly:i) being positioned within the dust cup,ii) having an opening that accepts a substantial length of an upper portion of the air tube, with a bott om portion of the air tube remaining uncovered, andiii) being removable from the air tube, wherein the filter assembly further comprises a lower filter support member positioned between the air tube and the filter medium, the lower filter support member having an opening that accepts an upper portion of the air tube so as to ensure a secure fitting relationship between the air tube and the filter support member, and an upper filter support member positioned between the cyclonic cover member and the filter medium;f) a cyclonic cover member removably covering the dust cup and the filter assembly within the dust cup; andg) a first air path for communicating dirt laden air from the base unit to the cyclonic cover member, wherein the cyclonic cover member:i) is removably disposed over the top of and sealed against the dust cup,ii) is engaged with the top of the filter assembly,iii) is detachable from the body portion together with the filter assembly and the dust cup,iv) has a helical underside surface forming a downward facing helical channel opening into the upper end of the dust cup, the downward facing helical channel spiraling dirt laden air toward the bottom of the dust cup, andv) further comprises a filter-in-place member that cooperatively engages the upper filter support member so as to prevent a user from reattaching the dust cup and the cyclonic cover member to the body portion unless the fitter assembly is in place on the air tubes, wherein the dirt laden air flows cyclonically in the dust cup and to the filter medium of the filter assembly, with an inside portion of the filter assembly and the air tube forming at least part of a second air path from inside the filter assembly down to the suction motor/fan assembly. 19. The vacuum cleaner with an improved filtration arrangement according to claim 18, wherein the lower filter support member and the upper filter support member are affixed to and sealed to the filter medium of the filter assembly. 20. A vacuum cleaner, comprising:a) a housing;b) a suction motor/fan assembly associated with the housing;c) a dirt receptacle, the dirt receptacle being removably attached to the housing;d) a filter assembly that is removable from the housing with the dirt receptacle as a unit, the filter assembly being removable from the dirt receptacle;e) a first air path for communicating an air stream drawn by the suction motor/fan assembly from the housing to the dirt receptacle, wherein the filter assembly filters the air stream when the filter assembly is in place in the dirt receptacle; andf) a filter-in-place member cooperating with the filter assembly and the housing to prevent a user from reattaching the dirt receptacle to the housing unless the filter assembly is in place in the dirt receptacle. 21. A vacuum cleaner, comprising:a) a housing;b) a suction motor/fan assembly associated with the housing;c) a dirt receptacle, the dirt receptacle being removably attached to the housing;d) a filter assembly that is removable from the housing with the dirt receptacle as a unit, the filter assembly being removable from the dirt receptacle;e) a first air path for communicating an air stream drawn by the suction motor/fan assembly from the housing to the dirt receptacle, wherein the filter assembly filters the air stream when the filter assembly is in place in the dirt receptacle; andf) a filter-in-place member cooperating with the filter assembly and the housing to prevent a user from reattaching the dirt receptacle to the housing unless the filter assembly is in place in the dirt receptacle, wherein the filter-in-place member comprises a filter-in-place arm that contacts the filter assembly when the filter assembly is in place. 22. The vacuum cleaner according to claim 21, wherein the filter-in-place arm contacts the filter assembly in a dead air region formed by at least one gasket when the filter assembly is in place. 23. A vacuum cleaner, comprising:a) a housing;b) a suction motor/fan asse mbly associated with the housing;c) a dirt receptacle, the dirt receptacle being removably attached to the housing;d) a filter assembly that is removable from the housing with the dirt receptacle as a unit, the filter assembly being removable from the dirt receptacle;e) a first air path for communicating an air stream drawn by the suction motor/fan assembly from the housing to the dirt receptacle, wherein the filter assembly filters the air stream when the filter assembly is in place in the dirt receptacle;f) a filter-in-place member cooperating with the filter assembly and the housing to prevent a user from reattaching the dirt receptacle to the housing unless the filter assembly is in place in the dirt receptacle; andg) a cover member removably covering the dirt receptacle and the filter assembly, the cover member, the dirt receptacle and the filter assembly being removable from the housing together as a unit, wherein the filter-in-place member cooperates with the filter assembly, the housing, and the cover member to prevent a user from reattaching the dirt receptacle and cover member to the housing unless the filter assembly is in place in the dirt receptacle. 24. The vacuum cleaner according to claim 23, wherein the filter-in-place member comprises a filter-in-place arm attached to the cover member that contacts the filter assembly when the filter assembly is in place. 25. The vacuum cleaner according to claim 23, wherein the filter-in-place member comprises a filter-in-place arm attached to the cover member that contacts the filter assembly in a dead air region formed by at least one gasket when the filter assembly is in place. 26. The vacuum cleaner according to claim 23, wherein the dirt receptacle further comprises an air tube extending into the dirt receptacle from a wall of the dirt receptacle, wherein the filter assembly filters the air stream when the filter assembly is in place on the air tube, and wherein the filter-in-place member cooperates with the filter assembly, the housing, and the cover member to prevent a user from reattaching the dirt receptacle to the housing unless the filter assembly is in place on the air tube. 27. The vacuum cleaner according to claim 26, wherein the filter-in-place member comprises a filter-in-place arm attached to the cover member that contacts the filter assembly when the filter assembly is in place. 28. The vacuum cleaner according to claim 26, wherein the filter-in-place member comprises a filter-in-place arm attached to the cover member that contacts the filter assembly in a dead air region formed by at least one gasket when the filter assembly is in place. 29. The vacuum cleaner according to claim 20, wherein the dirt receptacle further comprises an air tube extending into the dirt receptacle from a wall of the dirt receptacle, wherein the filter assembly filters the air stream when the filter assembly is in place on the air tube, and wherein the filter-in-place member cooperates with the filter assembly and the housing to prevent a user from reattaching the dirt receptacle to the housing unless the filter assembly is in place on the air tube. 30. A vacuum cleaner, comprising:a) a housing;b) a suction motor/fan assembly associated with the housing;c) a dirt receptacle, the dirt receptacle being removably attached to the housing and further comprising an air tube extending into the dirt receptacle from a wall of the dirt receptacle;d) a filter assembly that is removable from the housing with the dirt receptacle as a unit, the filter assembly being removable from the dirt receptacle, wherein the filter assembly filters the air stream when the filter assembly is in place on the air tube;e) a first air path for communicating an air stream drawn by the suction motor/fan assembly from the housing to the dirt receptacle, wherein the filter assembly filters the air stream when the filter assembly is in place in the dirt receptacle; andf) a filter-in-place member cooperating with the filter assembly and the housing to prevent a user from reattaching the dirt receptacle to the housing unless the filter assembly is in place in the dirt receptacle and on the air tube, wherein the filter-in-place member comprises a filter-in-place arm that contacts the filter assembly when the filter assembly is in place. 31. The vacuum cleaner according to claim 30, wherein the filter-in-place arm contacts the filter assembly in a dead air region formed by at least one gasket when the filter assembly is in place. 32. A vacuum cleaner with an improved filtration arrangement, comprising:a) a floor engaging base unit;b) a body portion pivotally mounted on said base unit;c) a suction motor/fan assembly mounted in one of the base unit and body portion wherein the suction motor/fan assembly is mounted in the body portion at a position directly beneath the dust cup;d) a dust cup mounted on and detachable from the body portion, the dust cup having a hollow, central air tube affixed to and extending upward from a bottom end of the dust cup to approximately the height of the top of a sidewall of the dust cup, wherein the dust cup comprises an external rib portion formed at a bottommost portion of the dust cup, the rib portion of the dust cup contacting a gasket member disposed between the suction motor/fan assembly and the dust cup to provide an airtight seal between the dust cup and suction motor/fan assembly;e) a filter assembly having a filter medium, the filter assembly:i) being positioned within the dust cup,ii) having an opening that accepts a substantial length of an upper portion of the air tube, with a bottom portion of the air tube remaining uncovered,iii) being removable from the air tube,iv) having a lower filter support member positioned between the air tube and the filter medium, the filter support member having an opening that accepts an upper portion of the air tube so as to ensure a secure fitting relationship between the air tube and the filter support member,v) having an upper filter support member positioned between the cyclonic cover member and the filter medium and further wherein the cyclonic cover member further comprises a filter-in-place member that cooperatively engages the upper filter support member so as to prevent a user from reattaching the dust cup and the cyclonic cover member to the body portion unless the filter assembly is in place on the air tube, wherein the lower filter support member and the upper filter support member are affixed to and sealed to the filter medium of the filter assembly, andvii) having the filter medium of the filter assembly comprise a pleated filter medium;f) a cyclonic cover member removably covering the dust cup and the filter assembly within the dust cup;g) a first air path for communicating dirt laden air from the base unit to the cyclonic cover member; wherein the cyclonic cover member:i) is removably disposed over the top of and sealed against the dust cup,ii) is engaged with the top of the filter assembly,iii) is detachable from the body portion together with the filter assembly and the dust cup, andiv) has a helical underside surface forming a downward facing helical channel opening into the upper end of the dust cup, the downward facing helical channel spiraling dirt laden air toward the bottom of the dust cup; andwherein the dirt laden air flows cyclonically in the dust cup and to the filter medium of the filter assembly, with an inside portion of the filter assembly and the air tube forming at least part of a second air path from inside the filter assembly down to the suction motor/fan assembly; andh) a HEPA filter disposed between the suction motor/fan assembly and atmosphere. 33. The vacuum cleaner with an improved filtration arrangement according to claim 32, wherein the filter-in-place member comprises a filter-in-place arm that contacts the upper filter support member. 34. The vacuum cleaner with an improved filtration arrangement according to claim 32, where in the filter-in-place member comprises a filter-in-place arm that contacts the upper filter support member in a dead air region formed by at least one gasket between the upper support member and the cyclone cover member. 35. The vacuum cleaner with an improved filtration arrangement according to claim 32, wherein the opening of the lower filter support member is formed in part by flexible grippers that engage an upper portion of the air tube.
Bobrosky Vincent L. ; Eisenmenger Richard J. ; Huebsch John A. ; Kontio Christer T. ; Mulcahy Joseph L. ; Reimer William R. ; Toohill Timothy P., Air filtrating self-propelled upright vacuum cleaner.
Murphy John S. ; Matousek Robert ; Farone Richard C. ; Brickner David M. ; Kalman Jeffrey M. ; Saunders Craig M. ; Wright Michael F., Upright vacuum cleaner.
Murphy John S. ; Matousek Robert ; Farone Richard C. ; Brickner David M. ; Kalman Jeffrey M. ; Saunders Craig M. ; Wright Michael F., Upright vacuum cleaner.
Wright Michael F. ; Thur Charles J. ; Latimer Brett ; Stephens Paul D. ; Cipolla Mark E. ; Barbeck Craig J., Upright vacuum cleaner with cyclonic airflow.
Ota, Tomio, Vertical filtering and separating suction machine of chips, steam and smoke by change of air direction, for machining center, lathe machine or other machines generating steam from oil or coolant.
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