Portable hand held vacuum cleaner

• US 4,920,608 A
• Filed: 08/08/1988
• Issued: 05/01/1990
• Est. Priority Date: 08/08/1988
• Status: Expired due to Term

• Current Assignee: Emerson Electric Company
• Original Assignee: Emerson Electric Company
• Inventors: Tomasiak, Mark J., Hult, David R.
• Primary Examiner(s): MOORE, CHRISTOPHER K
• Application Number:
  US07/229,494
• Time in Patent Office: 631 Days
• Field of Search: 15/344, 15/350, 15/352, 15/339
• US Class Current: 15/339
• CPC Class Codes: A47L 5/24 Hand-supported suction cleaners

Abstract

A portable hand held vacuum cleaner is disclosed as having a housing with a handle to lift and operate the vacuum cleaner, and a nozzle/debris container releasably locked to the housing. The housing contains a motor driven blower that draws air and debris (wet or dry) into the nozzle/debris container for depositing the debris therein, while allowing air to be exhausted through the blower and then through the housing to atmosphere. The blower is constructed with first and second jointly rotatable elements having a series of circumferentially spaced blower exhaust passageways and a transversely extending blower passageway adjacent the nozzle/debris container, for increased efficiency. A combined filter and seal is positioned in sealing engagement between the housing and the nozzle/debris container while affording filtering of debris from air between the nozzle/debris container and the blower in the housing. The housing is also capable of accommodating different multiple combinations of batteries with the motor and the size of the blower being increased to accommodate the increase in the number of batteries in the housing. For wet vacuuming, a squeegee with a wiper blade is available. Also, a one-piece push button facilitates operation and releasable locking/unlocking engagement of the housing relative to the nozzle/debris container.

Claims

1. A portable hand held vacuum cleaner comprising a housing having a handle permitting a user to lift and operate said vacuum cleaner and a nozzle/debris container releasably secured to said housing, said housing having a motor, a blower driven by said motor and being in communication with said nozzle/debris container for forcibly drawing air and debris entrained in the air into the nozzle/debris container to deposit debris within said container while also exhausting air from the nozzle/debris container and then through exhaust openings in said housing to the atmosphere, said housing and said nozzle/debris container being releasably secured and also sealed to one another in the vicinity of complementary interfitting circumferential portions of the housing and nozzle/debris container, a combined outer circumferential compressible seal and inner filter for joint insertion or removal relative to the housing and nozzle/debris container, and said outer circumferential compressible seal being in compressible sealing engagement between said complementary interfitting circumferential portions while said inner filter extends substantially across the nozzle/debris container when said housing and nozzle/debris container are releasably secured to one another, in order to seal off from the atmosphere the air communication between the blower in the housing and nozzle/debris container while requiring air exhausted from the nozzle/debris container to pass through the inner filter.

2. The portable hand held vacuum cleaner as defined in claim 1 wherein said seal and filter are fixedly attached to one another to provide the combined seal and filter construction.

3. The portable hand held vacuum cleaner as defined in claim 2 wherein said seal is made from a resilient and compressible material and said filter is constructed to restrict debris but permit air flow.

4. The portable hand held vacuum cleaner as defined in claim 3 wherein said seal is made from a polyurethane material and said filter is made from a filter material having a predetermined frazier air flow.

5. The portable hand held vacuum cleaner as defined in claim 4 wherein said blower comprises first and second rotatable elements operably associated relative to one another for joint rotation by said motor, said first and second rotatable elements having a series of circumferentially spaced blower exhaust passageways extending therearound which also communicate through interior passageways with a transversely extending blower passageway adjacent said filter for forcibly drawing air through and exhausting air from said nozzle/debris container and through exhaust openings in said housing which communicate with said blower exhaust passageways for exhausting the air to atmosphere.

6. The portable hand held vacuum cleaner as defined in claim 5 wherein one of said rotatable elements has a series of spaced spiral vanes extending along one face to an outer margin thereof and said other rotatable elements has a cover plate extending over said spaced spiral vanes to provide said spaced blower exhaust passageways between adjacent spaced spiral vanes and corresponding adjacent portion of said cover plate, said cover plate also having said transversely extending blower passageway therein.

7. The portable hand held vacuum cleaner as defined in claim 6 wherein said nozzle/debris container has a bottom and a channel extending from an air/debris inlet proximate the container bottom to an air/debris outlet within the nozzle/debris container, and deflector means between the air/debris outlet of said channel and said filter to deflect debris away from the filter within said nozzle/debris container.

8. The portable hand held vacuum cleaner as defined in claim 7 wherein said deflector means is configured for directing debris in a rotating or swirling motion away from the filter for accumulation within said nozzle/debris container.

9. The portable hand held vacuum cleaner as defined in claim 8 wherein said deflector means comprises an upper deflector depending from an upper wall of said nozzle/debris container and a lower deflector extending upwardly from a bottom wall of said nozzle/debris container, said upper deflector being arranged to deflect debris from said air/debris outlet against said lower deflector which deflects and directs debris along the bottom wall towards the front of said container and away from said filter for accumulation of debris and separation of air therefrom.

10. A portable hand held vacuum cleaner comprising a housing having a handle permitting a user to lift and operate said vacuum cleaner and a nozzle/debris container releasably secured to said housing, said housing having a motor, a blower driven by said motor and being in communication with said nozzle/debris container, said blower having a series of circumferentially spaced blower exhaust passageways which also communicate through interior passageways with a transversely extending blower passageway positioned adjacent said nozzle/debris container for forcibly drawing air and debris entrained in the air into the nozzle/debris container for depositing debris within said container and for exhausting air therefrom, said housing having exhaust openings which communicate with said blower exhaust passageways for exhausting the air from the blower to atmosphere, said housing and said nozzle/debris container being releasably secured and also sealed to one another in the vicinity of complementary interfitting circumferential portions of said housing and nozzle/debris container, a combined outer circumferential compressible seal and inner filter for joint insertion or removal relative to the housing and nozzle/debris container, said complementary interfitting circumferential portions of said housing and nozzle/debris container having confronting surfaces for engaging the outer circumferential compressible seal in compressible sealing engagement between the housing and nozzle/debris container when releasably secured together in order to seal off from the atmosphere the air communication between the blower in said housing and said nozzle/debris container, and said inner filter extending partially within and substantially across said nozzle/debris container so as to be positioned between the blower in said housing and said nozzle/debris container to require air exhausted from the nozzle/debris container to pass through said inner filter, said nozzle/debris container being transparent along a substantial portion thereof in order that a user may readily observe the amount of debris within the container and also piled up against the inner filter for determining the efficiency of operation of said vacuum cleaner.

11. The portable hand held vacuum cleaner as defined in claim 10 wherein said nozzle/debris container has a bottom and a channel extending from an air/debris inlet proximate the container bottom to an air/debris outlet within the nozzle/debris container, and deflector means between the air/debris outlet of said channel and said filter to deflect debris away from said filter within said container, said deflector means being configured for directing debris in a rotating or swirling motion away from said filter for accumulation within said nozzle/debris container.

12. The portable hand held vacuum cleaner as defined in claim 11 wherein said nozzle/debris container comprises an integral one-piece unit including said channel for conveying air and debris from said air/debris inlet to said air/debris outlet and into said container for accumulating debris therein, an upper deflector attached to an upper wall and a lower deflector attached to a bottom wall of said nozzle/debris container for deflecting debris away from the filter within said container.

13. The portable hand held vacuum cleaner as defined in claim 12 wherein said seal and filter are fixedly attached to one another to provide a combined seal and filter construction, and said combined seal and filter being removably mounted or inserted relative to seal supporting and engaging surfaces of said nozzle/debris container and housing with said associated filter extending within and across the nozzle/debris container.

14. The portable hand held vacuum cleaner as defined in claim 13 and including a plurality of batteries mounted both longitudinally and transversely within said housing to accommodate different multiples of batteries so as to increase or decrease battery power within said housing.

15. A portable hand held vacuum cleaner comprising a housing having a handle permitting a user to lift and operate said vacuum cleaner and a nozzle/debris container releasably secured to said housing, said housing having a motor, a blower driven by said motor and being in communication with said nozzle/debris container, said blower having a series of circumferentially spaced blower exhaust passageways which also communicate through interior passageways with a transversely extending blower passageway positioned adjacent said nozzle/debris container for forcibly drawing air and debris entrained in the air into the nozzle/debris container to deposit debris within said container and exhaust air therefrom and then through exhaust openings in said housing to the atmosphere, a circumferential seal and filter operably associated relative to one another and being positioned for sealing engagement between said housing and nozzle/debris container to seal off from the atmosphere the air communication between said blower and said nozzle/debris container, said filter being positioned between said blower and said nozzle/debris container to require air exhausted from said nozzle/debris container to pass through said filter, said housing being constructed to include a plurality of batteries capable of being mounted both longitudinally and transversely of said housing so as to accommodate different multiple combinations of batteries therein depending on motor and blower requirements.

16. In a portable hand held vacuum cleaner having a housing with a handle permitting a user to lift and operate said vacuum cleaner, a nozzle/debris container releasably secured to said housing and a motor driven blower in said housing and being in communication with said nozzle/debris container for forcibly drawing air and debris entrained in the air into the nozzle/debris container to deposit debris within said container and exhaust air therefrom and through exhaust openings in said housing to the atmosphere, the improvement comprising a housing construction to accommodate different multiple combinations of batteries mounted in said housing for different motor and blower requirements, said batteries capable of being mounted both longitudinally and transversely of said housing so as to provide the different multiple combinations desired.

17. The improvement as defined in claim 16 wherein the different multiple combinations of batteries include two batteries, three batteries, four batteries or five batteries, depending on motor or blower requirements.

18. The improvement as defined in claim 17 wherein the housing is constructed to support three batteries extending transversely to said housing and two batteries extending longitudinally relative to said housing.

19. The improvement as defined in claim 18 including battery packs of at least two batteries electrically interconnected to one another and wrapped in protective film.

20. In a portable hand held vacuum cleaner having a housing within a handle permitting a user to lift and operate said vacuum cleaner, a nozzle/debris container releasably secured to said housing, and a motor driven blower in said housing and being in communication with said nozzle/debris container for forcibly drawing air and debris entrained in the air into the nozzle/debris container to deposit debris within said container and exhaust air therefrom including through exhaust openings in said housing, the improvement comprising a combined compressible seal and debris restricting filter in which the compressible seal is positioned between circumferential complementary seal supporting and engaging surfaces provided in said housing and nozzle/debris container for compressible sealing engagement between said housing and nozzle/debris container when releasably secured together to seal off from the atmosphere the air communication between said blower and said nozzle/debris container, said filter projecting a limited distance within said nozzle/debris container while extending substantially across the nozzle/debris container so as to require air exhausted from said nozzle/debris container to pass through said filter, said combined seal and filter permitting joint insertion and removal relative to said housing and nozzle/debris container.

21. The improvement as defined in claim 20 wherein said seal is made from compressible material and extends circumferentially around said filter, and said filter is constructed to permit substantially unrestricted flow of air therebetween without debris.

22. The improvement as defined in claim 21 wherein said seal is made from polyurethane material and said filter is made from filter material with a predetermined frazier air flow.

23. A portable hand held vacuum cleaner comprising a housing having a handle permitting a user to lift and operate said vacuum cleaner and a nozzle/debris container releasably secured to said housing, said nozzle/debris container defining a channel including an air/debris inlet and an air/debris outlet, said housing having a motor and a blower driven by said motor which is in communication with said nozzle/debris container for forcibly drawing air and debris entrained in the air into the nozzle/debris container, a debris filter extending partially within and substantially across the nozzle/debris container to retain debris in the nozzle/debris container while also allowing air to be exhausted from the nozzle/debris container through exhaust openings in said housing to atmosphere, said nozzle/debris container including deflector means for controlling airflow, said deflector means including a deflector attached to a bottom wall within said nozzle/debris container and extending upwardly from said bottom wall and positioned below the air/debris outlet of said channel, and said nozzle/debris container being transparent along a substantial portion thereof in order that a user may readily visually observe the debris filter including the amount of debris in the nozzle/debris container piled up against the debris filter for determining the efficiency of operation of said vacuum cleaner.

24. The portable hand held vacuum cleaner as defined in claim 23, wherein said debris filter comprises a combined outer circumferential compressible seal and inner filter attached to one another for joint insertion and removal relative to said housing and nozzle/debris container, said outer circumferential compressible seal being in compressible sealing engagement between complementary interfitting circumferential portions of the housing and nozzle/debris container when releasably secured together, while the inner filter extends partially within and substantially across the nozzle/debris container.