DEBRIS ACCESS DOOR

Abstract: A vacuum cleaner includes a receptacle (22), a motor assembly (26) in air flow communication with the receptacle (22), and a lid (24) on the receptacle (22). The vacuum cleaner also includes a hose inlet (28) on the receptacle (22), a debris opening (30), and a door (32) opening and closing the debris opening (30). The debris opening (30) may be on the receptacle (22) or in the lid (24) of the vacuum cleaner. Alternatively, the vacuum cleaner may include an adaptor (60) that is attached to the hose (39) at one end and removably connected to the hose inlet (28) at the other end, where the debris opening is on the adaptor (60). The vacuum cleaner may have an adaptor (60) that is removably connected to the hose (39) at one end and removably connected to the hose at the other end, where the debris opening is on the adaptor.

Description: DEBRIS ACCESS DOOR FIELD OF INVENTION This invention relates generally to vacuum cleaners, and more particularly to devices that allow large debris to enter a vacuum cleaner. BACKGROUND OF THE INVENTION Vacuum cleaners generally include a motor assembly, a tank or other receptacle, a hose inlet on the receptacle, and a hose that attaches to the hose inlet at one end and has a nozzle at the other end. The motor of the motor assembly drives an impeller that creates a low pressure area inside the receptacle. The pressure difference between the inside and the outside of the receptacle creates a suction effect at the hose inlet, which causes dust, debris, and liquids to enter the receptacle through the hose. The capability of vacuum cleaners to pick up large debris has been limited to debris that is smaller than the diameter of the hose. Further, even debris that is smaller than the hose diameter may clog the hose when passing through a bend in the hose. A large diameter hose for accepting large debris may not be acceptable because it will reduce the air velocity in the hose inlet, thus reducing the efficiency of the vacuum cleaner. Hoses are often used with nozzles which may have an even smaller cross section, and further increase the likelihood of clogging. Additionally, a hose with limited bending capability to allow passage of large debris reduces the versatility of the vacuum cleaner by making it ineffective for accessing hard to reach areas. Therefore, in most instances, a vacuum cleaner operator must manually pick up large debris and dispose of it by other means. SUMMARY OF THE INVENTION The debris access door eliminates the drawbacks noted above in a simple and effective manner. Particularly, in accordance with one aspect of the present invention, a vacuum cleaner may include a receptacle and a debris opening in air communication with the receptacle. The vacuum cleaner further includes a lid that is removably attached to the receptacle. Additionally, the vacuum cleaner includes a motor assembly in air communication with the receptacle, a door opening and closing the debris opening, and a hose inlet on the receptacle. In accordance with another aspect of the present invention, the debris opening may be on the receptacle. In accordance with another aspect the present invention, the debris opening may be in the lid. In accordance with another aspect of the present invention, the vacuum cleaner may include an adaptor that is removably connected to the hose inlet at one end and attached to the hose at the other end, where the debris opening is on the adaptor. In accordance with another aspect of the present invention, the vacuum cleaner may include an adaptor that is removably connected to the hose inlet at one end and removably connected to the hose at the other end, where the debris opening is on the adaptor. Other features and advantages of the present invention will become apparent from the specification and drawings, in which like reference numerals denote like structures. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a top elevational view of a first embodiment of a vacuum cleaner of the present invention having a debris opening on a receptacle with a door on the debris opening in a closed position. Fig. 2 is a partial cross-sectional view of the vacuum cleaner of Fig. 1 taken at the lines 2-2 of Fig. 1. Fig. 3 is a top elevational view of the vacuum cleaner of Fig. 1 having the debris opening in an open position. Fig. 4 is a partial cross-sectional view of the vacuum cleaner of Fig. 3 taken at the lines 4-4 of Fig. 3. Fig. 5 is a top elevational view of a second embodiment of a vacuum cleaner of the present invention having a debris opening in a lid with a door on the debris opening in a closed position. Fig. 6 is a partial cross-sectional view of the vacuum cleaner of Fig. 5 taken at the lines 6-6 of Fig. 5. Fig. 7 is a top elevational view of the vacuum cleaner of Fig. 5 having the debris opening in an open position. Fig. 8 is a partial cross-sectional view of the vacuum cleaner of Fig. 7 taken at the lines 8-8 of Fig. 7. Fig. 9 is a top elevational view of a third embodiment of a vacuum cleaner of the present invention having an adaptor attached to a hose having a debris opening on the adaptor and a door on the debris opening in a closed position. Fig. 10 is a partial cross-sectional view of the vacuum cleaner of Fig. 9 taken at lines 10-10 of Fig. 9. Fig. 11 is a top elevational view of the vacuum cleaner of Fig. 9 with the door on the debris opening in an open position. Fig. 12 is a partial cross-sectional view of the vacuum cleaner of Fig. 11 taken at lines 12-12 of Fig. 11. Fig. 13 is a top elevational view of a fourth embodiment of a vacuum cleaner of the present invention having an adaptor removably connected to a hose having a debris opening on the adaptor and a door on the debris opening in a closed position. Fig. 14 is a partial cross-sectional view of the vacuum cleaner of Fig. 13 taken at lines 14-14 of Fig. 13. Fig. 15 is a top elevational view of the vacuum cleaner of Fig. 13 with the door on the debris opening in an open position. Fig. 16 is a partial cross-sectional view of the vacuum cleaner of Fig. 15 taken at lines 16-16 of Fig. 15. DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring initially to Figs. 1 -4, a vacuum cleaner 20 includes a receptacle 22, a lid 24, a motor assembly 26, a hose inlet 28, a debris opening 30, and a door 32 opening and closing the debris opening. The lid 24 has a rim 34 which is designed to fit over the edge of the receptacle 22 for the vacuum cleaner 20. Around the periphery of the lid 24 are several latch ports 36 (shown in Figs. 1 and 3) which cooperate with latches 38 (shown in Figs. 1 and 3) on the receptacle 22 in order to hold the lid 24 on the receptacle. The lid 24 houses a motor assembly 26 that is in air flow communication with the receptacle 22 through a filter 27 (shown in Figs. 2 and 4). Generally, the motor assembly 26 includes an electric motor, a power cord 29 (shown in Figs. 2 and 4) for use with an electrical outlet, an air impeller, and other associated equipment (not depicted) that create a low pressure area inside the receptacle 22. A hose 39 removably connects at a first end 40 to a hose inlet 28 on the receptacle 22. A nozzle 42 (shown in Figs. 2 and 4) is attached at a second end 44 (shown in Figs. 2 and 4) of the hose 39 for collecting debris. The vacuum cleaner 20 can be lifted and moved with a handle 45 that is placed on the vacuum cleaner 20. Additionally, the vacuum cleaner 20 can be moved with casters 46 (shown in Figs. 2 and 4). When the vacuum cleaner 20 is in operation, the low pressure created in the receptacle 22 by the motor assembly 26 creates a pressure difference between the receptacle 22 and the nozzle 42 to cause a suction effect at the nozzle 42. Small debris enters the nozzle 42, travels through the hose 39, and is deposited into the receptacle 22. The debris opening 30 accommodates large debris that cannot enter or that may become trapped inside of the hose 39. The door 32, having a tab 52, rotates about a hinge 54 to open and close the debris opening 30. As seen in Figs. 2 and 4, the debris opening 30 has a first end 47 of a pipe section 48 with a second end 50 opening into the receptacle 22. A vacuum cleaner operator manually picks up large debris, opens the door 32, drops the debris in the receptacle 22 through the debris opening 30, and closes the door 32. Although a door set on a rotating hinge is preferred, numerous other types of doors, including removable doors with various closures, and doors with other types of hinges can be used to open and close the debris opening 30. The door may also be spring loaded so that in order to open the door, the force of the spring must be overcome, for instance, by pushing or pulling the door to provide access for the debris. Described below are other embodiments of the present invention in which certain elements in those other embodiments are identical to elements in the first embodiment. Where elements are identical, they have been given the same numbers throughout the embodiments. In a second embodiment of the present invention, as illustrated in Figs. 5-8, the debris opening 30 is in the lid 24 instead of in the receptable 22 as shown in Figs. 1-4. The debris opening 30 has a first end 47 (shown in Figs. 6 and 8) of a pipe section 48 (shown in Figs. 6 and 8) with a second end 50 (shown in Figs. 6 and 8) having air flow communication within the inside receptacle 22. The door 32 rotates about the hinge 54 to open and close the debris opening 30. A vacuum cleaner operator can manually pick up large debris, open the door 32, drop the debris inside the receptacle 22 through the debris opening 30, and close the door 32. In a third embodiment of the present invention, as illustrated in Figs. 9- 12, an adaptor 60 is removably connected to the hose inlet 28 at a first end 62 (shown in Figs. 10 and 12) of the adaptor 60 and attached to the hose 39 at a second end 64 (shown in Figs. 10 and 12) of the adaptor 60. Since the adaptor 60 is attached to the hose 39, it can be considered a part of the hose 39, where the first part of the hose is rigid and the second part of the hose is flexible. The adaptor 60 comprises a primary pipe 66 (shown in Figs. 10 and 12) and a secondary pipe 68 (shown in Figs. 10 and 12). The secondary pipe 68 is attached at a first end 70 (shown in Figs. 10 and 12) to the primary pipe 66 and is in air flow communication with the primary pipe 66. A second end 72 (shown in Figs. 10 and 12) of the secondary pipe 68 is the debris opening 30. The door 32 rotates about the hinge 54 to open and close the debris opening 30. The first end 62 of the adaptor 60 mates with the hose inlet 28 to form a friction fit, similar to the fit that a hose and hose inlet usually have on a vacuum cleaner. The adaptor 60 can be removed from the vacuum cleaner 20 by pulling the first end 62 of the adaptor 60 out of the hose inlet 28. In use, a vacuum cleaner operator can manually pick up large debris, open the door 32, drop the debris inside debris opening 30, and close the door 32. The debris will be pulled into the recepticle 22 by the suction created by the vacuum cleaner. In order to minimize clogging of the hose 39, it is advantageous to have the debris opening 32 located adjacent the hose inlet 28. In a fourth embodiment of the present invention, as illustrated in Figs. 13-16, an adaptor 80 is removably connected to the hose inlet 28 at the first end 82 (shown in Figs. 14 and 16) of the adaptor 80 and removably connected to the hose 39 at the second end 84 (shown in Figs. 14 and 16) of the adaptor. The adaptor 80 comprises a primary pipe 86 (shown in Figs. 14 and 16) and a secondary pipe 88 (shown in Figs. 14 and 16). The secondary pipe 88 is attached at a first end 90 (shown in Figs. 14 and 16) to the primary pipe 86 and is in air flow communication with the primary pipe 86. A second end 92 (shown in Figs. 14 and 16) of the secondary pipe 88 is the debris opening 30. The door 32 having a tab 52 rotates about the hinge 54 to open and close the debris opening 30. The first end 82 of the adaptor 80 mates with the hose inlet 28 to form a friction fit. The first end 40 of the hose 39 mates with the second end 84 of the adaptor to form a friction fit. The friction fit at the two ends of the adaptor 80 is similar to the fit that a hose and hose inlet usually have on a vacuum cleaner. The adaptor 80 can be removed from the vacuum cleaner 20 by pulling the first end 82 of the adaptor 80 out of the hose inlet 28. The adaptor 80 can be removed from the hose 39 by pulling the hose 39 out of the second end 84 of the adaptor 80. As with other embodiments, a vacuum cleaner operator can manually pick up large debris, open the door 32, drop the debris into the debris opening 30, and close the door 32. The adaptor 80 of Figs. 13-16 can be sold with a vacuum cleaner or can be sold separately for use with existing vacuum cleaners. If sold separately, the ends of the adaptor 80 should be designed to mate with the hose and hose inlet of existing vacuum cleaners. Although a tank-type vacuum cleaner has been shown in Figs. 1-16, other types of vacuum cleaners, such as upright vacuum cleaners, back pack vacuum cleaners, etc., may be used in connection with the present invention. In such a situation, the debris opening of the present invention would be placed on such a vacuum cleaner or an adaptor, so that large debris can be placed in the receptacle of the vacuum cleaner, either directly or indirectly. The foregoing detailed description has been given for clearness of understanding only, and no unnecessary limitations should be understood therefrom, as modifications would be obvious to those skilled in the art.

Claims: CLAIMS L A vacuum cleaner comprising: a receptacle; a motor assembly in air flow communication with the receptacle wherein the motor assembly draws air from the receptacle; a hose inlet on the receptacle; a debris opening in air flow communication with the receptacle; and a door moveable between a first position closing the debris opening and a second position in which the debris opening is not closed. 2. A vacuum cleaner as recited in claim 1 wherein the debris opening is on the receptacle. 3. A vacuum cleaner as recited in claim 2 comprising a hinge wherein the door rotates about the hinge to open and close the debris opening. 4. A vacuum cleaner as recited in claim 1 comprising a lid removably attached to the receptacle wherein the debris opening is in the lid. 5. A vacuum cleaner as recited in claim 4 comprising a hinge wherein the door rotates about the hinge to open and close the debris opening. 6. A vacuum cleaner as recited in claim 1 comprising: an adaptor removably connected to the hose inlet at a first end of the adaptor; and a hose attached to the adaptor at a second end of the adaptor wherein the debris opening is on the adaptor. 7. A vacuum cleaner as recited in claim 6 comprising a hinge wherein the door rotates about the hinge to open and close the debris opening. 8. A vacuum cleaner as recited in claim 1 comprising: an adaptor removably connected to the hose inlet at a first end of the adaptor; and a hose removably connected at a second end of the adaptor wherein the debris opening is on the adaptor. 9. A vacuum cleaner as recited in claim 8 comprising a hinge wherein the door rotates about the hinge to open and close the debris opening. 10. A vacuum cleaner comprising: a receptacle; a motor assembly in air flow communication with the receptacle wherein the motor assembly draws air from the receptacle; a hose inlet on the receptacle; a debris opening on the receptacle and in air flow communication with the receptacle; and a door moveable between a first position closing the debris opening and a second position in which the debris opening is not closed. 11. A vacuum cleaner as recited in claim 10 comprising a hinge wherein the door rotates about the hinge to open and close the debris opening. 12. A vacuum cleaner comprising: a receptacle; a motor assembly in air flow communication with the receptacle wherein the motor assembly draws air from the receptacle; a hose inlet on the receptacle; a lid removably attached to the receptacle; a debris opening in the lid and in air flow communication with the receptacle; and a door moveable between a first position closing the debris opening and a second position in which the debris opening is not closed. 13. A vacuum cleaner as recited in claim 12 comprising a hinge wherein the door rotates about the hinge to open and close the debris opening. 14. An adaptor for connecting between a hose inlet of a vacuum cleaner and a hose for the vacuum cleaner, the adaptor comprising: a first adaptor end having a first opening wherein the first end mates with the hose inlet of the vacuum cleaner; a second adaptor end having a second opening wherein the second end mates with the hose; a debris opening in the adaptor; and a door wherein the door is moveable between a first position closing the debris opening and a second position in which the debris opening is not closed. 15. The adaptor as recited in claim 14 comprising a hinge wherein the door rotates about the hinge to open and close the debris opening. 16. The adaptor of claim 14 comprising: a primary pipe comprising a first end and a second end wherein the first end of the primary pipe is the first end of the adaptor and the second end of the primary pipe is the second end of the adaptor; and a secondary pipe comprising a first end and a second end wherein the first end is attached to the primary pipe and is in air flow communication with the primary pipe and the second end is the debris opening. 17. A vacuum cleaner comprising: a receptacle; a motor assembly in air flow communication with the receptacle wherein the motor assembly draws air from the receptacle; a hose inlet on the receptacle; and an adaptor for connecting between a hose inlet of a vacuum cleaner and a hose for the vacuum cleaner, the adaptor comprising: a first adaptor end having a first opening wherein the first end mates with the hose inlet of the vacuum cleaner; a second adaptor end having a second opening wherein the second end mates with the hose; a debris opening in the adaptor; and a door wherein the door is moveable between a first position closing the debris opening and a second position in which the debris opening is not closed. 18. The vacuum cleaner as recited in claim 17 comprising a hinge wherein the door rotates about the hinge to open and close the debris opening. 19. The vacuum cleaner as recited in claim 17, wherein the adaptor comprises: a primary pipe comprising a first end and a second end wherein the first end of the primary pipe is the first end of the adaptor and the second end of the primary pipe is the second end of the adaptor; and a secondary pipe comprising a first end and a second end wherein the first end is attached to the primary pipe and is in air flow communication with the primary pipe and the second end is the debris opening. 20. A vacuum cleaner comprising: a receptacle; a motor assembly in air flow communication with the receptacle wherein the motor assembly draws air from the receptacle; a hose inlet on the receptacle; a hose having a first end and a second end, wherein the first end attaches to the hose inlet and the second end is adapted to connect to a nozzle; a debris opening in the hose adjacent the hose inlet; and a door moveable between a first position closing the debris opening and a second position in which the debris opening is not closed. 21. The vacuum cleaner as recited in claim 20 comprising a hinge wherein the door rotates about the hinge to open and close the debris opening. 22. The vacuum cleaner as recited in claim 20 comprising a hose having a rigid section and a flexible section wherein the end of the rigid section mates with the hose inlet on the receptacle. 23. The vacuum cleaner as recited in claim 20 comprising a hose having a rigid and a flexible section wherein: the end of the rigid section mates with the hose inlet on the receptacle; and the rigid section comprises a pipe having a first end and a second end wherein the first end is attached to the rigid section and is in air flow communication with the rigid section and the second end is the debris opening.

Inventors: BERFIELD ROBERT C, STORRS CHARLES M, BERFIELD, ROBERT, C., STORRS, CHARLES, M.
Applicants: SHOP VAC CORP, SHOP VAC CORPORATION
Application year: 1999
Main classification: A47L9
IPC codes: A47L5, A47L9