Cleaning apparatus for central vacuum system

• US 6,459,056 B1
• Filed: 02/24/2000
• Issued: 10/01/2002
• Est. Priority Date: 03/05/1999
• Status: Expired due to Term

• Current Assignee: Bernard John Graham
• Original Assignee: Bernard John Graham
• Inventors: Graham, Bernard John
• Primary Examiner(s): FRIEDHOFER, MICHAEL A
• Application Number:
  US09/512,178
• Time in Patent Office: 950 Days
• Field of Search: 153/01, 153/10, 153/14, 154/19, 154/22, 137/360, 137/377, 137/382, 137/382.5, 200/50.01, 200/50.002, 200/50.1, 200/50.28, 200/51.R, 200/51.09, 200/51.11, 200/51.13, 200/61.58 R, 200/61.6, 200/61.7, 200/61.86, 200/330, 200/331, 285/7, 439/190, 439/191, 439/210, 439/211
• US Class Current: 200/61.6
• 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
• CPC Class Codes: A47L 9/242 Hose or pipe couplings
• CPC Class Codes: H01H 3/161 for actuation by moving a closing member, e.g. door, cover or lid the switch controlling enclosed equipment H01H9/226; switches operated by a removable member, wherein one single insertion movement of a key comprises an unlocking stroke and a switch actuating stroke, e.g. security switch for safety guards H01H27/002

Abstract

An inlet and switching apparatus for a central vacuum system includes a base body section with a back wall having an inlet aperture formed therein adapted for connection to a central vacuum source. A cover section is mounted on the base body section and extends over a forward side thereof. The cover section includes a front wall spaced from and opposite the back wall. The two sections together form an inlet housing defining a vacuum inlet chamber and this housing has a lower portion forming a dirt receiving opening that permits dirt to enter the chamber under a vacuum influence. A closure member is pivotably mounted on the body section and there is a mechanism for moving the closure member to open or close the inlet aperture. In a preferred embodiment, rails on the cover section engage two nubs on the closure member whereby sliding movement of the cover section causes the closure member to either close or open the aperture. There is an electrical switch mechanism responsive to the sliding movement of the cover section for actuating the central vacuum source. Preferably, the cover section can be swung upwardly to a position exposing the outlet aperture so that the end of a vacuum hose can be inserted therein.

Claims

1. An inlet and switching apparatus for a central vacuum system comprising:

a base body section including a back wall having an inlet aperture adapted for connection to a central vacuum source;

a front body section movably mounted on said base body section and extending over a forward side thereof, said front body section having a front wall, said base body section and said front body section together forming a central vacuum inlet structure capable of forming a vertically extending vacuum passageway leading to said inlet aperture, said inlet structure having a bottom portion adapted to form a dirt receiving opening through which dirt can enter said vacuum passageway, said inlet structure further providing a valve structure movable between a first position where a flow of air and debris through said vacuum passageway and said inlet aperture is prevented and a second position where the air and the debris can flow through said vacuum passageway and out said inlet aperture under a vacuum influence created by said central vacuum system when said inlet aperture is operatively connected to said central vacuum system; and

an electrical switch mechanism responsive to the movement of said front body section for actuating said central vacuum source which is turned on and operating when said front body section is moved to an ON position.

wherein a predetermined movement of said front body section between an OFF position and said ON position causes said valve structure to move between said first position and said second position.

2. An inlet and switching apparatus according to claim 1 wherein said front body section is slidable on said base body section between said OFF position and said ON position, said front wall is spaced from and opposite said back wall, and said inlet structure includes a vacuum inlet chamber.

3. An inlet and switching apparatus according to claim 2 wherein said valve structure includes a closure member movable relative to said base body section between said first position where said inlet aperture is closed by said closure member and said second position where said inlet aperture is open at least sufficiently to allow said air and debris to flow through said vacuum passageway.

4. An inlet and switching apparatus according to claim 3 wherein said front body section includes an engagement structure for engaging said closure member so that a sliding movement of said front body section between said OFF position and said ON position causes said closure member to pivot from said first position to said second position.

5. An inlet and switching apparatus according to claim 4 wherein said closure member is pivotably mounted on said body section and has engagement members formed thereon, and said engagement structure comprises a guide rail mechanism formed on said front body section and adjacent said engagement members.

6. An inlet and switching apparatus according to claim 5 wherein said front body section is also pivotably mounted on said base body section so that said front body section can be pivoted from a primary position, in which said vacuum inlet chamber is formed, to an open position where said closure member can be pivoted to a third, uppermost position where said inlet aperture is fully exposed, permitting a user to insert a central vacuum hose end directly into said inlet aperture from a forward side thereof.

7. An inlet and switching apparatus according to claim 4 including a spring mechanism connected to both said closure member and said base body section and biasing said closure member towards said first position, said engagement structure acting to override the biasing force of said spring mechanism when said front body section is in the ON position and to hold said closure member in said second position.

8. An inlet and switching apparatus according to claim 2 wherein said base body section includes a rearwardly extending tubular extension formed around said inlet aperture and adapted for connection to a rough-in bracket mounted in a wall of a building and further includes a pivot member on which said front body section is pivotably mounted, said front body section being pivotable from a primary position in which said vacuum inlet chamber is formed to an open position where a forward side of said inlet aperture is or can be exposed.

9. An inlet and switching apparatus according to claim 1 wherein said inlet structure includes an adjustable downward extension of the front body section, said downward extension having a bottom end which is open and which defines at least t portion of said dirt receiving opening.

10. An inlet and switching apparatus for a central vacuum system comprising:

a base body section including a back wall having an inlet aperture adapted for connection to a central vacuum source;

a front body section movably mounted on said base body section and extending over a forward side thereof, said front body section having a front wall, said base body section and said front body section together forming a central vacuum inlet structure capable of forming a vacuum passageway leading to said inlet aperture, said inlet structure having an end portion adapted to form a dirt receiving opening through which dirt can enter said vacuum passageway, said inlet structure further providing a valve structure movable between a first position where a flow of air and debris through said vacuum passageway and said inlet aperture is prevented and a second position where the air and the debris can flow through said vacuum passageway and out said inlet aperture under a vacuum influence created by said central vacuum system when said inlet aperture is operatively connected to said central vacuum system; and

an electrical switch mechanism responsive to movement of said valve structure for actuating said central vacuum source which is turned on and operating by moving said valve structure to said second position,

wherein a predetermined movement of said front body section between an initial position and another position causes said valve structure to move between said first position and said second position.

11. An inlet and switching apparatus according to claim 10 wherein said vacuum passageway extends vertically and said dirt receiving opening is located at a bottom end of the inlet structure.

12. An inlet and switching device for a central vacuum system, comprising:

a base body section including a back wall having an inlet aperture formed therein and adapted for connection to a central vacuum source, said inlet aperture being adapted for insertion of a central vacuum hose end;

a front body section mounted on said base body section and extending over a forward side thereof, said front body section having a front wall, said base body section and said front body section together forming a central vacuum inlet structure with a vacuum passageway therein and an end portion thereof forming a dirt receiving opening that opens into said passageway, said vacuum passageway extending at a substantial angle to a central axis of said inlet aperture and said dirt receiving opening being located away from said inlet aperture, said inlet structure further providing a valve structure movable between a closed position where a flow of air and debris through said vacuum passageway is prevented and an open position wherein the air and the debris can flow through said vacuum passageway and out said inlet aperture when vacuum is applied to the inlet aperture; and

an electrical switch mechanism mounted on said inlet structure for turning on and causing said central vacuum system to operate,

wherein said front body section is mounted on said base body section so that said front body section can be moved from an initial position, in which said inlet aperture is covered thereby, to another position so that said inlet aperture is exposed at least sufficiently to permit a user to insert said central vacuum hose end into said inlet aperture.

13. An inlet and switching device according to claim 12 wherein said front wall is spaced from and located opposite said back wall, said valve structure include a closure member movably mounted on said base body section, and said front body section is movably mounted on said base body section.

14. An inlet and switching device according to claim 13 wherein said closure member is pivotable from said closed position to said open position and to a further position where said closure member is swung away from the inlet aperture in order to expose the inlet aperture for insertion of said central vacuum hose end.

15. An inlet and switching device according to claim 14 wherein said base body section includes screw holes formed therein to permit said base body section to be detachably connected to a rough-in bracket mounted in a building wall and said electrical switch mechanism includes two spaced-apart contacts mounted in an upper section of said base body portion and a metal conductor mounted in a top section of said closure member, whereby movement of said closure member from said closed position to said open position brings said metal conductor into contact with both of said contacts and thereby turns on said central vacuum system.

16. An inlet and switching device according to claim 14 wherein said closure member has a gasket member mounted thereon, said gasket member sealingly engaging said back wall around said inlet aperture when the closure member is in said closed position, and said base body section includes a tubular rearward extension located at said inlet aperture and adapted to receive said central vacuum hose end and to be connected to a pipe of said central vacuum system.

17. An inlet and switching device according to claim 14 wherein said switch mechanism includes two pairs of spaced-apart electrical contacts mounted in an upper section of said base body section, two screw holes are formed in said base body section in the region of all four contacts, two metal screws are mounted in said screw holes and are in contact with both said pairs of electrical contacts, said screws being connectible to an electrical circuit for operating said central vacuum system, a metal conductor is mounted in a top section of said closure member whereby movement of said closure member from said closed position to said open position brings said metal conductor into contact with both contacts of one of said pairs in order to turn on said central vacuum system, and the other pair of contacts project slightly into said inlet aperture so that a gap between the contacts of the other pair can be closed for electrical conductance by insertion of the central vacuum hose end into the inlet aperture.

18. An inlet and switching device according to claim 13 wherein said front body section is pivotably mounted on said base body section so that said front body section can be pivoted from said initial position to said another position.

19. An inlet and switching device according to claim 18 wherein said actuator is an engagement structure formed on said front body section for engaging a portion of said closure member and a sliding movement of said front body section from said initial position to an ON position causes said closure member to be pivoted from said closed position to said open position.

20. An inlet and switching device according to claim 19 herein said base body section includes a pivot member forming a horizontal pivot axis for each of said front body section and said closure member, said engagement structure comprises two rails integrally formed on opposite sidewalls of said front body section, and said two rails slidingly engage two projections formed on opposite sides of said closure member in order to pivot said closure member from said closed position to said open position.

21. An inlet and switching device according to claim 13 wherein said front body section includes an actuator for pivoting said closure member from said closed position to said open position.

22. An inlet and switching device according to claim 21 wherein said actuator is a lever connected to said closure member and manually operable from outside said inlet structure.

23. An inlet and switching device according to claim 13 wherein two electrical contacts project slightly into said inlet aperture, a gap formed between said contacts can be closed for electrical conduction by said insertion of said central vacuum hose end, and said base body section includes electrical connectors for connecting an electrical circuit for operating said central vacuum system to said two contacts.

24. An inlet and switching device according to claim 12 wherein said front body section has an adjustable downward extension forming said end portion and having a bottom end which is open.

25. An inlet and switching apparatus for a central vacuum system comprising:

an inlet housing forming a vacuum inlet chamber having a debris receiving bottom opening, and having a back wall with an inlet aperture, said inlet aperture configured for connection to a suction-providing pipe of the central vacuum system, said inlet housing being adapted for mounting to a fixed supporting structure;

a valve device movably mounted in or on said inlet housing for selectively opening and closing said inlet aperture to the passage of air therethrough during operation of the central vacuum system, said inlet housing including a valve operating member for selectively operating the valve device to open and close the inlet aperture;

an electrical switch for activating and de-activating a vacuum cleaner motor of said central vacuum system; and

a downwardly extending inlet extension adjustably connected to said inlet housing and forming a passageway for debris to flow upwards into said vacuum inlet chamber through said bottom opening, wherein a debris-receiving opening is provided at a bottom end of said downward extension and is adapted for positioning adjacent a horizontal surface to be swept.

26. An inlet and switching apparatus according to claim 25 including a support bracket adapted for mounting vertically on said supporting structure, which comprises a wall of a building, and having an opening for receiving a tubular rearward extension of said inlet aperture, wherein screw holes are formed in both the back wall of said inlet housing and said bracket for rigid attachment of said inlet housing to said support bracket.

27. An inlet and switching apparatus according to claim 26 wherein said support bracket comprises a main bracket section and a lower base stopper detachably connectible to a bottom end of said main bracket section, said main bracket section having said opening for the tubular rearward extension formed therein and said base stopper being formed with forwardly projecting tabs on opposite ends thereof for locating a correct position of adjacent ends of a baseboard extending along the building wall.

28. An inlet and switching apparatus according to claim 25 wherein said inlet extension includes a channel-shaped extension member which projects into a bottom end of said inlet housing and is open at upper and lower ends thereof and along a rear side thereof.

29. An inlet and switching apparatus according to claim 28 wherein said back wall of said inlet housing includes a downward extension that is generally planar and has a height selected so that, after installation of said apparatus on said supporting structure, a bottom edge of said downward extension is located close to or at said horizontal surface to be swept while said inlet aperture is located at least a short distance above a horizontal floor plate of said supporting structure, and wherein rear edges of said extension member extend along and contact said downward extension of said back wall in order to form said passageway for debris to flow upwards from said horizontal surface.

30. An inlet and switching apparatus according to claim 29 including a detachable ramp member connected to said bottom edge of the downward extension and projecting forwardly therefrom.

31. An inlet and switching apparatus according to claim 30 wherein the downward extension of said back wall has a number of horizontal grooves extending substantially across its width, said grooves facilitating an adjustment to the height of said downward extension by permitting said downward extension to be cut in order to remove a lower portion thereof before installation of the inlet and switching apparatus.

32. An inlet and switching apparatus according to claim 25 wherein said inlet extension has a substantial length of at least 6 inches in order to permit said inlet housing to be mounted on a building wall, which provides said supporting structure, a substantial distance of at least 6 inches above the horizontal surface to be swept.

33. An inlet and switching apparatus according to claim 32 wherein said inlet extension includes a channel-shaped extension member which projects into a bottom e nd of said inlet housing and is open at upper and lower ends thereof and along a rear side thereof and a generally flat rear extension member adapted for connection to elongate, vertically extending edges of the channel-shape extension member and to an exterior surface of said building wall.

34. An inlet and switching apparatus according to claim 25 including a support bracket for mounting horizontally on said supporting structure, which comprises a horizontal surface of a cabinet or counter and having an opening for receiving a tubular extension of said inlet aperture, wherein fastener holes are formed in both the back wall of said inlet housing and the bracket for rigid attachment of said inlet housing to the support bracket.

35. An inlet and switching apparatus for a central vacuum system comprising:

a central vacuum inlet structure for mounting on a rigid support, said inlet structure including a back wall having an inlet aperture adapted for connection to a central vacuum source and a front wall extending over a forward side of said back wall, said inlet structure capable of forming a vertically extending vacuum passageway leading to said inlet aperture, said inlet structure having a bottom portion adapted to form dirt receiving opening through which dirt can enter said vacuum passageway and also providing a valve structure movable between a first position where a flow of air and debris through said vacuum passageway and said inlet aperture is prevented and a second position where air and debris can flow through said vacuum passageway and out said inlet aperture under a vacuum influence when said apparatus is connected to the central vacuum system and the latter is turned on; and

an electrical switch for activating and de-activating a vacuum cleaner motor of said central vacuum system,

wherein said inlet structure includes a downwardly extending inlet extension adjustably connected to an upper portion of said inlet structure and forming part of said vacuum passageway and said dirt receiving opening, a bottom end of said inlet extension being movable for positioning adjacent a horizontal surface to be swept.

36. An inlet and switching apparatus for a vacuum cleaning system comprising:

a vacuum inlet structure for mounting on a rigid support, said inlet structure including a rear wall having an inlet aperture adapted for connection to a vacuum source and a front wall extending over a forward side of said rear wall, said inlet structure capable of forming a first vacuum passageway leading to said inlet aperture, said inlet structure having an end portion forming a first opening through which dirt can enter said first vacuum passageway and also providing a valve structure movable between a first position where a flow of air and debris through said vacuum passageway and said inlet aperture is prevented and a second position where air and debris can flow through said vacuum passageway and out said inlet aperture under a vacuum influence when said apparatus is connected to the vacuum cleaning system and the latter is turned on;

an electrical switch for activating and de-activating a vacuum cleaner motor of the vacuum cleaning system; and

a relatively rigid inlet extension adjustably connected to said inlet structure and forming a further passageway for dirt and debris to flow into said first passageway through said first opening,

wherein a second opening for receiving debris is provided at an outer end of the inlet extension remote from said inlet structure and can be positioned adjacent a surface to be cleaned.

37. An inlet and switching device according to claim 36 wherein said inlet extension includes an open-ended elbow member having a substantial bend therein whereby said further passageway in the inlet extension also has a substantial bend therein.

38. An inlet and switching device according to claim 37 wherein said inlet extension further includes a channel-shaped extension member, that detachably connects to a downwardly extending leg of said elbow member and is open at upper and lower ends thereof and along a rear side thereof, and a generally flat rear extension member adapted for connection to vertically extending rear edges of the channel-shaped extension member.

39. An inlet and switching device according to claim 36 wherein said valve structure includes a valve member movably mounted in said inlet structure for selectively opening or closing said inlet aperture to the passage of air and debris therethrough, said inlet structure including a valve operating member for moving said valve member to open or close the inlet aperture, and wherein said valve operating member is a slidable front cover of the inlet structure which engages projections formed on said valve member in order to move the valve member and said electrical switch is responsive to sliding movement of said front cover for activating and de-activating the vacuum cleaner motor.

40. An inlet and switching apparatus for a central vacuum system said apparatus being suitable for mounting on a wall of a building and comprising:

a base body section including a back wall having a debris-removing aperture formed therein and a rearwardly extending pipe section rigidly connected to said back wall at said aperture, said pipe section being connectible to a suction providing pipe of said central vacuum system;

a cover section mountable on said base body section and extending over a forward side thereof, said base body section and said cover section together forming an inlet housing defining a vacuum inlet chamber and having a dirt receiving opening at a bottom end thereof;

a valve member movably mounted in said inlet housing for selectively opening and closing said vacuum chamber for passage of air and debris therethrough, said inlet housing including a valve operating member for moving said valve member to open or close the vacuum chamber;

an electrical switch responsive to movement of said valve operating member for activating and de-activating a vacuum cleaner motor of the central vacuum system; and

a mounting bracket for mounting in a wall of a building so as to extend vertically and having a relatively large hole formed therein to snugly receive said pipe section and at least one small fastener-receiving hole.

wherein said base body section is connectible to said mounting bracket by means of at least one fastener extending from said base body section into said at least one fastener receiving hole.

41. An inlet and switching apparatus according to claim 40 wherein said cover section is pivotably mounted on said base body section so that said cover section can be pivoted away from said base body section to thereby expose said debris-removing aperture, and wherein said aperture and said pipe section are capable of receiving an end section of a central vacuum hose when said cover section is pivoted away from said base body section.

42. An inlet and switching apparatus according to claim 40 wherein said cover section includes an upper cover section and an inlet extension member adjustably connected to said upper cover section and forming a passageway for flow of debris and dirt into said vacuum inlet chamber, said inlet extension member having a dirt receiving opening at a bottom end thereof.

43. An inlet and switching apparatus according to claim 42 wherein said mounting bracket has an annular seal mounted in said relatively large hole in order to seal the joint between the mounting bracket and said rearwardly extending pipe section.

44. An inlet and switching apparatus according to claim 40 wherein said mounting bracket has a breakaway connecting section formed along one side edge, said connecting section having fastener-receiving holes formed therein, and said mounting bracket also has two locating flanges that project forwardly from positions adjacent opposite, vertically extending edges of the mounting bracket.

45. An inlet apparatus for a central vacuum system comprising:

a tubular body forming an inlet aperture and adapted for connection to a central vacuum source at a location above floor level;

a front section connected to a front end of said tubular body and forming an enclosed chamber through which air and debris can flow during use of said apparatus, front section having a bottom aperture and a rear aperture, the rear aperture permitting said air and debris to flow into said tubular body;

an elongate inlet extension connectible to said front section at said bottom aperture and forming a downwardly extending substantially vertical passageway for air and debris to flow upwards and through said front section during use of said apparatus, said inlet extension having a debris-receiving bottom opening for positioning adjacent said floor level;

wherein the length of said inlet extension is adjustable in order to permit said debris-receiving bottom opening to be positioned adjacent said floor level.

46. An inlet apparatus according to claim 45 wherein said inlet extension has sufficient length to enable said tubular body to be connected to said central vacuum source at a location about one foot above floor level.

47. An inlet apparatus according to claim 46 wherein said inlet extension is connected to said front section by a telescoping connection.

48. An inlet apparatus according to claim 45 wherein said inlet extension has a substantial length of at least 8 inches.

49. An inlet apparatus according to claim 45 wherein said front section is an elbow member and said enclosed chamber forms an airflow passageway with a substantially 90°

bend.

50. In an inlet apparatus for a central vacuum system comprising a tubular body forming an inlet aperture and adapted for connection to a central vacuum source at a location above floor level and a front section connected to one end of said tubular body and forming an enclosed air passage through which air and debris can flow during use of said apparatus, said front section having an inlet opening and an outlet opening, the outlet opening permitting said air and debris to flow into said tubular body, the improvement comprising an elongate inlet extension connected to said front section at said inlet opening and forming a downwardly extending, substantially vertical passageway for air and debris to flow upwards and through said front section during use of said inlet apparatus, said inlet extension having a debris-receiving bottom opening that can be positioned adjacent said floor level, and said outlet opening of the front section being positioned at a rear end thereof.