Vacuum canister with auxiliary intake valve

• US 20040177468A1
• Filed: 03/10/2003
• Published: 09/16/2004
• Est. Priority Date: 03/10/2003
• Status: Active Grant

• Current Assignee: Hewlett-Packard Products Incorporated (HP Inc.)
• Original Assignee: Hewlett-Packard Products Incorporated (HP Inc.)
• Inventors: Gabric, Andrew L., Smith, James F., Nieschwitz, Darrell V.
• Granted Patent: US 7,051,398 B2
• Time in Patent Office: Days
• US Class Current: 15/314
• CPC Class Codes: A47L 5/32 with means for connecting a hose hose couplings for suction cleaners A47L9/24
• CPC Class Codes: A47L 5/38 Built-in suction cleaner installations, i.e. with fixed tube system to which, at different stations, hoses can be connected

Abstract

A vacuum canister for use with a central vacuum system is disclosed. The vacuum canister includes a hollow, tubular housing that has openings at either end. A cover covers the upper opening and a dust collection bin is disposed beneath the lower opening. The housing is divided into clean and dirt collection chambers by a wall. The clean chamber is a dust-free area and the vacuum pump assembly is mounted therein. The dirt collection chamber is the area in the canister where the dirt-laden vacuumed air is drawn into the device. The vacuum canister is provided with an auxiliary vacuum intake assembly that enters the housing in the clean, dust-free chamber. The intake assembly includes a receptacle for receiving the end fitting of a portable vacuum hose and the receptacle is operatively connected to the dirt collection chamber of the housing by way of a conduit that extends from the receptacle through an aperture in the wall and into the dirt collection chamber. The receptacle is wired to the motor for the vacuum pump assembly so that when the portable hose is attached to the receptacle, the vacuum pump is automatically started. The wiring for the receptacle passes through the clean chamber of the housing. The receptacle includes a pivoted cover which covers the receptacle when it is not in use so as to maintain the vacuum within the system.

Claims

1. A vacuum canister for use in a central vacuum system, said vacuum canister comprising:

a housing having a dirt collection chamber and a clean chamber separated from the dirt collection chamber, whereby a hole extends through said housing into the clean chamber;

a wall extending intermediate the clean chamber and the dirt collection chamber of the housing, whereby said wall further defines an aperture that connects the dirt collection chamber to the clean chamber;

an auxiliary vacuum intake assembly disposed within the clean chamber, a first part of said intake assembly being mounted within the hole formed in the housing and a second part of said intake assembly being mounted within the aperture in the wall, the first and second parts being in communication with each other so that air may flow from the first part through the second part and into the dirt collection chamber.

2. The vacuum canister as disclosed in claim 1, further comprising:

a vacuum pump assembly housed within the clean chamber; and

electrical wiring connecting the auxiliary vacuum intake assembly to the vacuum pump assembly.

3. The vacuum canister as disclosed in claim 2, wherein the electrical wiring is routed through the clean chamber of the canister.

4. The vacuum canister as disclosed in claim 2, wherein the electrical wiring is adapted to be separated from the flow of dirt-laden air.

5. The vacuum canister as defined in claim 4, wherein the electrical cable is secured within the clean chamber to the wall using a plurality of resilient snap clips.

6. The vacuum canister as disclosed in claim 2, wherein the auxiliary vacuum intake assembly includes a selectively coverable receptacle, and the electrical wiring includes an electrical switch mounted on the receptacle, the switch being operable between an on position when a portable hose may be inserted into said intake assembly and an off position when the portable hose may be removed from the intake assembly.

7. The vacuum canister as disclosed in claim 6, further comprising a valve member for selectively covering the receptacle, and wherein the valve member is pivotally movable from the closed position to the open position.

8. The vacuum canister as disclosed in claim 7, wherein the valve member is spring-biased to the closed position.

9. The vacuum canister as disclosed in claim 7, wherein the switch is responsive to the movement of the valve member, said switch actuating the vacuum pump assembly when the valve member is moved to the open position.

10. The vacuum canister as disclosed in claim 7, wherein the receptacle is adapted to receive a hose-end fitting of a portable vacuum hose when the valve member is moved to the open position.

11. The vacuum canister as disclosed in claim 6, further comprising:

a conduit connected to the receptacle at one end and extending through the aperture in said wall and into the dirt collection chamber.

12. The vacuum canister as disclosed in claim 11, wherein the conduit is substantially rigid.

13. The vacuum canister as disclosed in claim 12, wherein the receptacle is removably connected to the conduit using an adhesive applied in such a manner so as to be breakable upon application of sufficient external force.

14. The vacuum canister as disclosed in claim 6, wherein the auxiliary vacuum intake assembly includes a straight tube which extends through the aperture formed in the wall in sealing engagement therewith, and first and second elbows affixed to opposing ends thereof.

15. The vacuum canister as defined in claim 14, wherein the straight tube is integrally molded with said wall.

16. The vacuum canister as disclosed in claim 14, wherein the receptacle includes a tubular body having an inner end that extends through the hole of the housing and is connected to the first elbow.

17. The vacuum canister as disclosed in claim 15, wherein the inner end of the tubular body is removably connected to the first elbow using an adhesive in such a manner as to be breakable upon application of sufficient external force.

19. The vacuum canister as disclosed in claim 2, further comprising:

electrical wiring connecting the auxiliary vacuum intake assembly to the vacuum pump assembly.

20. The vacuum canister as disclosed in claim 2, wherein the auxiliary vacuum intake assembly includes a selectively coverable receptacle, and the electrical wiring includes an electrical switch mounted on the receptacle, the switch being operable between an on position when a portable hose is inserted into said intake assembly and an off position when the portable hose is removed from said intake assembly.

21. The vacuum canister as disclosed in claim 2, wherein the electrical wiring is routed through the clean chamber of the canister.

22. The vacuum canister as disclosed in claim 2, wherein the electrical wiring is adapted to be separated from the flow of dirt-laden air.

18. A vacuum canister for use in a central vacuum system, the system having at least one receptacle adapted to receive a portable vacuum hose, the receptacle being connected to the canister by at least one conduit, the canister having an exhaust pipe exiting therefrom for exhausting cleaned air from the system;

said vacuum canister comprising;

a housing having a wall with an upper end and a lower end, the upper end defining a first opening and the lower end defining a second opening, the wall defining at least one hole therein, the hole being proximate the upper end of the wall;

a cover disposed over the first opening;

a dust collection bin disposed under the second opening;

a wall disposed between the upper and lower ends of said housing, said wall having an upper surface proximate the upper end and a lower surface proximate the lower end, whereby a clean chamber is formed between said upper surface and said upper end, and a dirt collection chamber is formed between said lower surface and said lower end;

wherein said wall further defines a bore and an aperture that each connect the clean chamber to the dirt collection chamber;

a vacuum pump assembly including a motor for generating a vacuum in the system, the vacuum pump assembly being disposed within the clean chamber and proximate the bore in the wall, whereby said pump assembly causes air to be suctioned from the dirt collection chamber to the clean chamber through the bore;

a filter support extending from the lower surface of the wall and into the dirt collection chamber, said filter support being proximate the bore so that air is suctioned through the filter as it moves toward the bore;

an auxiliary vacuum intake assembly disposed within the clean chamber, a first part of said intake assembly being mounted within the second hole in the housing and a second part of said intake assembly being mounted within the aperture in the wall, the first and second parts being in communication with each other so that air may flow from the first part, through the second part and into the second chamber.