Reservoir handle for a cleaning element such as a brush, wiper or similar

1. A reservoir handle for a cleaning element ( 2 ), the reservoir handle comprising:

a handle ( 3 ) comprised of a hollow tube ( 3 ′) that forms a refillable reservoir ( 15 ) for liquid within the hollow tube ( 3 ′), the refillable reservoir ( 15 ) having a reservoir top and a reservoir bottom, the hollow tube ( 3 ′) having a top end and a bottom end, wherein the bottom end is fastenable to the cleaning element ( 2 );

an extension piece ( 7 ) that extends the top end of the hollow tube ( 3 ′);

a lateral filler opening ( 14 ) extending through a wall of the extension piece ( 7 );

an outlet ( 16 , 33 ) located at the reservoir bottom;

an operable valve ( 17 ) that opens and closes the outlet ( 16 , 33 );

an operating button ( 8 ) affixed to the extension piece ( 7 ), the operating button ( 8 ) being connected to the valve ( 17 ), the operating button ( 8 ) being affixed movably in an axial direction on the handle ( 3 ),

wherein pushing the operating button ( 8 ) in the axial direction opens the valve ( 17 ) to let liquid out of the reservoir ( 15 ),

wherein the operating button ( 8 ) comprises a stopper ( 25 ) that is axially movable in the extension piece ( 7 ) between i) a closed position in which the reservoir ( 15 ) is closed off from the environment when the operating button ( 8 ) is not pressed in and ii) a filling position in which the reservoir ( 15 ) is connected to the environment via the filler opening ( 14 ) in order to be able to fill the reservoir ( 15 ).

2. The reservoir handle according to claim 1 , wherein the extension piece ( 7 ) is constructed as a cylindrical tubular form and that the stopper ( 25 ) is provided with a seal ( 26 ) for sealing the stopper ( 25 ) in the extension piece ( 7 ), whereby the stopper ( 25 ) is affixed movably in the axial direction.

3. The reservoir handle according to claim 2 , wherein the operating button is provided with a cap ( 24 ) that fits over a top end of the extension piece ( 7 ) and which is connected to the stopper ( 25 ).

4. The reservoir handle according to claim 3 , further comprising a first screwed connection between the extension piece ( 7 ) and the operating button ( 8 ) to be able to screw the operating button ( 8 ) on the extension piece ( 7 ) during assembly.

5. The reservoir handle according to claim 2 , further comprising a first screwed connection between the extension piece ( 7 ) and the operating button ( 8 ), the first screwed connection allowing the operating button ( 8 ) to be screwed on the extension piece ( 7 ) during assembly.

6. The reservoir handle according to claim 5 , further comprising a second screwed connection between the extension piece ( 7 ) and the operating button ( 8 ), the second screwed connection allowing the stopper ( 25 ) to be moved axially in the extension piece ( 7 ) until the seal ( 26 ) of the stopper ( 25 ) is below a level of the filler opening ( 14 ), corresponding to the closed position.

7. The reservoir handle according to claim 6 , wherein the operating button ( 8 ), or extension piece ( 7 ), is provided with a threaded section ( 30 ) that can mate with a first threaded section ( 9 ) on the extension piece ( 7 ), or operating button ( 8 ), to form the first screwed connection ( 9 - 30 ), and together with a second threaded section ( 10 ) on the extension piece ( 7 ), or operating button ( 8 ), to form the second screwed connection ( 10 - 30 ), whereby the first and second threaded sections ( 9 and 10 ) are at an axial distance (C) from one another.

8. The reservoir handle according to claim 7 , wherein the second threaded section ( 10 ) is located closer to the bottom end of the handle ( 3 ) than the first threaded section ( 9 ).

9. The reservoir handle according to claim 8 , wherein the second threaded section ( 10 ) and the threaded section ( 30 ) mating therewith are positioned on the extension piece ( 7 ) and on the operating button ( 8 ) such that, when the second threaded section ( 10 ) is screwed in the direction of the bottom end of the handle ( 3 ) past the threaded section ( 30 ) mating therewith, the operating button ( 8 ) can be pressed over a certain distance to be able to use this operating button ( 8 ) to open the aforementioned valve ( 17 ) during use for cleaning.

10. The reservoir handle according to claim 7 , wherein the second threaded section ( 10 ) and the threaded section ( 30 ) mating therewith are positioned on the extension piece ( 7 ) and on the operating button ( 8 ) such that, when the second threaded section ( 10 ) is screwed in the direction of the bottom end of the handle ( 3 ) past the threaded section ( 30 ) mating therewith, and the operating button ( 8 ) can be pressed over a certain distance to be able to use the operating button ( 8 ) to open the valve ( 17 ) during use for cleaning.

11. The reservoir handle according to claim 10 , wherein the filler opening ( 14 ) at least partially extends in the axial direction below the second threaded section ( 10 ).

12. The reservoir handle according to claim 7 , wherein the threaded section ( 30 ) and the first and second threaded sections ( 9 , 10 ) are provided on the outside surface of the extension piece ( 7 ) and on the inside surface of the cap ( 24 ).

13. The reservoir handle according to claim 12 , wherein the threaded section ( 30 ) and the first and second threaded sections ( 9 , 10 ) protrude out of the outside surfaces of the extension piece ( 7 ) and the cap ( 24 ).

14. The reservoir handle according to claim 12 , wherein the inside diameter (G) of the threaded sections ( 30 ) on the cap ( 24 ) is equal to or greater than the outside diameter (A) of the outside surface of a cylindrical end of the extension piece ( 7 ) and/or the outside diameter (E) of the threaded sections ( 9 , 10 ) on the handle ( 3 ) is equal to or smaller than the inside diameter (F) of the inside surface of the cap ( 24 ).

15. The reservoir handle according to claim 1 , wherein the operating button ( 8 ) is connected to the valve ( 17 ) by a rod ( 21 ) that extends through the reservoir ( 15 ) and which is movably held by one end in an axial guide ( 22 ) of the operating button ( 8 ).

16. The reservoir handle according to claim 15 , wherein the axial guide ( 22 ) is a close-tolerance bore with a widened conical entrance ( 23 ).

17. The reservoir handle according to claim 16 , wherein the valve ( 17 ) is provided with a disk ( 18 ) that is operated by the rod ( 21 ) and which is pushed against a seat ( 20 ) by a spring ( 19 ) in order to keep the valve ( 17 ) closed, and a length of the rod ( 21 ) and a depth of the guide ( 22 ) are harmonised to one another such that the rod pushes the operating button ( 8 ) upwards due to the action of the spring ( 19 ) up to a position whereby the second threaded section ( 10 ) and the threaded section ( 30 ) mating therewith move towards abutment against one another, and whereby the seal ( 26 ) is below the level of the filler opening ( 14 ).

18. The reservoir handle according to claim 17 , wherein one or more cutaways ( 34 ) are provided in the inside wall of a cylindrical end of the extension piece ( 7 ) below the level of the seal ( 26 ) when the operating button ( 8 ) is not pressed that ensure that when the seal passes such a cutaway, when the operating button ( 8 ) is pressed in to open the valve ( 17 ), the reservoir ( 15 ) is connected to the environment via the filler opening ( 14 ).

19. A reservoir handle for a cleaning element ( 2 ), the reservoir handle comprising:

a hollow cylindrical part ( 3 ′, 7 ) having an upper end, a lower end, and hollow region located between the upper and lower ends, wherein the bottom end is fastenable to the cleaning element ( 2 );

a refillable reservoir ( 15 ) for liquid located within the hollow region, the refillable reservoir ( 15 ) having a reservoir top and a reservoir bottom;

a lateral filler opening ( 14 ) extending through a wall of the upper end of the hollow cylindrical part;

an outlet ( 16 , 33 ) located at the reservoir bottom;

an operable valve ( 17 ) that opens and closes the outlet ( 16 , 33 );

an operating button ( 8 ) affixed to the upper end of the hollow cylindrical part, the operating button ( 8 ) being connected to the valve ( 17 ), the operating button ( 8 ) being affixed movably in an axial direction on the upper end of the hollow cylindrical part,

wherein pushing the operating button ( 8 ) in the axial direction opens the valve ( 17 ) to let liquid out of the reservoir ( 15 ), and

wherein the operating button ( 8 ) comprises a stopper ( 25 ) that is axially movable in the upper end of the hollow cylindrical part between i) a closed position in which the reservoir ( 15 ) is closed off from the environment when the operating button ( 8 ) is not pressed in, and ii) a filling position in which the reservoir ( 15 ) is connected to the environment via the filler opening ( 14 ) in order to be able to fill the reservoir ( 15 ).

20. An extension piece ( 7 ) for use on a reservoir handle ( 3 ) that forms a refillable reservoir ( 15 ), the having a bottom end that is fastenable to a cleaning element ( 2 ), the extension piece ( 7 ) comprising:

a tubular cylindrical body having a cylindrical wall that defines, at cross-sections along a longitudinal length of the tubular cylindrical body, an outside diameter (A) and an inside diameter (B) of the tubular cylindrical body;

a first threaded section ( 9 ) located on an exterior surface of the tubular cylindrical body at an upper end of the tubular cylindrical body, an outside diameter (E) of the first threaded section ( 9 ) being greater than the outside diameter (A) of the tubular cylindrical body;

a second threaded section ( 10 ) located on the exterior surface of the tubular cylindrical body at the upper end of the tubular cylindrical body, the a second threaded section ( 10 ) being spaced apart from the first threaded section ( 9 ), an outside diameter (E) of the second threaded section ( 10 ) being greater than the outside diameter (A) of the tubular cylindrical body;

a lateral filler opening ( 14 ) extending through the tubular cylindrical body, the lateral filler opening ( 14 ) partially overlapping the second threaded section ( 10 );

a handgrip ( 6 ) provided on the exterior surface of the tubular cylindrical body at a lower end of the tubular cylindrical body,

wherein the first and second threaded sections ( 9 , 10 ) divide the upper end of the tubular cylindrical body into a top zone ( 11 ) at the uppermost end of the tubular cylindrical body, an intermediate zone ( 12 ) between the first and second threaded sections ( 9 , 10 ), and a lower zone ( 13 ) between the second threaded section ( 10 ) and the handgrip ( 6 ), each of the top zone, the intermediate zone, and the lower zone being without screw thread, wherein,

the inside diameter (B) of the tubular cylindrical body at the lower zone ( 13 ) is less that the inside diameter (B) of the tubular cylindrical body at the lower end of the tubular cylindrical body comprising the handgrip ( 6 ),

an interior of the lower end of the tubular cylindrical body comprising the handgrip ( 6 ) fits onto a top end of the reservoir handle ( 3 ) that forms the refillable reservoir ( 15 ) to thereby extend the top end of the reservoir handle ( 3 ),

the first threaded section ( 9 ) is engagable to mate with a threaded section ( 30 ) located on an interior surface of a cylindrical shell ( 29 ) of a cap ( 24 ) comprising a stopper ( 25 ) with a base that mounts a seal ( 26 ), such that when threaded on the first threaded section ( 9 ), the lateral filler opening ( 14 ) is exposed for accepting liquid, and

the second threaded section ( 10 ) is engagable to mate with the threaded section ( 30 ) such that when threaded on the second threaded section ( 10 ), the seal ( 26 ) seals against an interior of the tubular cylindrical body at a cross-section that includes the lower zone ( 13 ).