1. Field of the Invention
A ROLLER THE PRESENT INVENTION relates to a roller, and more particularly to a roller capable of storing and dispensing a liquid.
2. Description of Related Art
Rollers have many uses and are often used to smooth or flatten areas such as a lawn. In order to effectively smooth or flatten the ground, such a roller must be of substantial weight. In addition to rollers of fixed weight, rollers have been proposed which may be filled with a liquid such as water in order to increase their effective weight.
In addition, it have been previously proposed to use such a water-filled roller as a container or reservoir of water to be transported to a particular location for dispensing the water. However, such proposed rollers often required external pumping means and other apparatus in order to be used in this way.
There have also been proposed sprayers for use around gardens. However, these are often bulky and weighty items which are not easily transported to desired locations.
It can be appreciated that there exist disadvantages with existing devices such as those discussed above.
The present invention seeks to provide an improved roller.
According to one aspect of the present invention, there is provided a roller comprising a substantially cylindrical body and a handle pivotably attached to the body, the body comprising a chamber for containing a liquid, an outlet in fluid communication with the chamber and pump means for dispensing a liquid from the chamber through the outlet.
Preferably, the handle is detachable from the body.
Conveniently, the handle is attached to one end of the body.
Advantageously, one end of the roller is detachable.
Preferably, the detachable end cap comprises a handle portion.
Conveniently, the body comprises a central shaft.
Advantageously, the roller comprises means for compressing material stored within the chamber.
Preferably, the pump means extend through one end of the body substantially along the axis of the body.
Conveniently, the body comprises a second chamber located within the first chamber.
Advantageously, the roller further comprises a hose which may be stored within the handle.
Preferably, the roller further comprises a plurality of spikes provided on the outer surface of the above.
Conveniently, the roller further comprises edging means attached to one end cap.
The present invention will now be described, by way of example, with reference to the accompanying drawings in which:
Turning to
The body 2 thus comprises a chamber 8 bounded by the tubular wall 4 and the first end cap 5 and the second end cap 6.
The handle 3 is substantially L-shaped and is releasably attached to the body 2 at a point substantially centrally located on the second end cap 6.
The handle 3 is capable of pivoting about the connection to the end cap 6, thus allowing the body to be rolled over the ground whilst pivoting about the connection with the handle 3.
As shown in
When the handle 3 is attached to the body 2, the first portion 27 extends from a socket 28 in the second end cap 6, substantially along the axis of the body 2 for a short distance away from the second end cap 6. From this end of the first portion 27 of the handle 3 the second portion 9 extends substantially perpendicularly away from the first portion 27, i.e. in a direction radially away from the axis of the body 2, for a distance which is slightly longer than the overall length of the body 2. The third portion 10 of the handle 3 extends substantially perpendicularly away from the end of the second portion 9, in a direction substantially coaxial with the axis of the body 2. The third portion 10 extends for a distance slightly longer than the length of body 2. The handle 3 may be taken apart into several separate pieces for convenient storage within the body 2 when not in use. In use, a user may grasp the third portion 10 of the handle 3 in order to trundle the body 2 along the ground.
The body 2 is provided with a pump 11, the operation of which will be discussed in detail below. Briefly, the pump 11 comprises a handle 12 located externally of the chamber 8 and which extends through the first end cap 5 into a pump mechanism 13 located within the shaft 7.
Turning to
The pump 11 comprises the external handle 12 which is connected to the pump mechanism 13 positioned within the hollow shaft 7. The pump mechanism 13 is shorter than the shaft 7 giving a free volume within the end of shaft 7. This area of the shaft 7 is provided with a series of apertures 14 which provide fluid communication between the volume within the shaft 7 and the chamber 8. In use, the handle 12 is pushed towards the body 2 and twisted anticlockwise to unlock it from a locked state. The pump handle 12 may then be moved repeatedly away from and towards the body 2 in order to pump air through the pump mechanism 13 into the free space at the end of the shaft 7, through the apertures 14 and into the chamber 8. The pump 11 may thus be used to pressurise the contents of the chamber 8. For safety purposes there is a pressure valve 15 which releases excess pressure if the chamber 8 is pressurised above a pre-determined level, such as 45 psi (3 bar). The pressure valve 15 is located in the first end cap 5. There is also provided an outlet 16 in the first end cap 5 which allows fluid to be dispensed from the chamber 8. The pump 11 is located centrally through an aperture in the first end cap 5 and the valve 15 and outlet 16 are located diametrically about the pump 11.
A spray 17 may be connected to the outlet 16 for convenient dispensing of a liquid from within the chamber 8. As shown, the various components of the spray 17 may be conveniently stored within the handle 3. To retrieve the spray 17 from this stored state, the third portion 10 may be removed from the remainder of the handle 3 to expose the lance 21. The spray 17 may then be pulled out and the third portion 10 replaced on the remainder of the handle 3. This process may be reversed in order to store the spray 17 within the handle 3 after use.
The spray 17 comprises three major portions. The first portion is for insertion through the outlet 16 and into the chamber 8 and comprises an elongate tube 18 of plastic material which is provided with a weighted filter 19 at its free end. At the other end of the tube 18 there is provided attachment means 20 which engages with the outlet 16 in a liquid-tight manner. In use, the tube 18 is inserted through the outlet 16 into the chamber 8 and is attached by screwing the attachment means 19 onto the outlet 16. The weighted filter 19 ensures that the open end of the tube 18 is located towards the bottom of the chamber 8, with the filter preventing particulate matter from passing into the tube 18 and blocking the spray 17.
The second portion of the spray 17 is a length of flexible plastic hose 21 which is stored in a coiled state when the spray 17 is located within the handle 3. The hose 21 is connected to the tube 18 through the attachment means 20. The hose 21 leads to the third portion of the spray 17 which is a lance 22. The lance 22 comprises a telescopic section 23 leading to an adjustable spray head 24. The lance 22 comprises two trigger switches 25 and 26 which control the flow of liquid through the spray 17. The first trigger 25 allows fluid to flow through the spray 17 only whilst being depressed by the user and automatically shuts off the flow of fluid when pressure on the trigger 25 is released. In contrast, the second trigger 26 may be toggled between an open position, allowing fluid flow through the spray 17, and a closed position. The user may toggle this switch 24 into the open position to allow fluid flow without having to continually depress the switch.
In order to use the roller 1 as a liquid dispensing device, the handle 12 of the pump 11 is twisted anticlockwise without initially depressing the handle in order to unscrew and detach the whole pump means 11 from the body 2. Liquid may then be conveniently poured through the opening left by the removal of the pump 11 into the hollow shaft 7 and then through the apertures 14 into the chamber 8. Once a sufficient level of liquid has been reached, the pump 11 is then reinserted into the aperture in the first end cap 5 of the body 2. The handle 12 is then depressed and turned anticlockwise in order to release it for pumping.
Repeated reciprocal movement of the handle 12 forces air into the chamber 8 as described above. This pressurises the contents of chamber 8 ready for dispensing the liquid. The spray 17 may then be used by depressing one of the triggers 25 and 26 to allow pressurised liquid inside the chamber 8 to be expelled through tube 18 via outlet 16 along the spray 17 and out of the spray head 24. Once the chamber 8 is emptied of liquid, or if no more liquid needs to be dispensed, the pressure valve may be activated to release excess pressure. The pump 11 may then be removed in order to empty any remaining liquid from the chamber 8. The spray 17 may be removed from the outlet 16 and replaced within the handle 3.
In addition to dispensing water, the roller 1 may also be used to transport and dispense other liquids, such a pesticides, herbicides or fertilisers, and also liquids such as wood/shed treatments such as water-proofing agents or preservatives.
The handle 3 may be reversibly detached from the body 2 as described below with reference to
As shown in
The second portion 33 of the mechanism 30 is a compression spring, which is adapted to be received within the third portion 34 of the mechanism 30. The portion 34 has a substantially cylindrical shape with notches adapted to receive the spring 33. Spring 33 is received within portion 34 which in turn is received within portion 31, all of which is mounted on shaft 35 extending from the end of the first portion 27 of handle 3. The three components of the locking mechanism 30 provide a resilient bias to maintain or return the locking portions 32 to their normal radially extended positions.
The locking portions 32 have a chamfered edge proximal the circular end wall to facilitate the easy insertion of the mechanism 30 into the socket 28.
To remove the handle 3, the user clutches and squeezes the release buttons 29 towards each other. This flexes the mechanism 30, bringing the locking portions 32 towards each other, allowing the mechanism 30 to be withdrawn from the socket 28.
As discussed above, the body 2 comprises a tubular wall 4 capped by a first end cap 5 and a second end cap 6 which are connected together via a shaft 7 running substantially along the axis of the body 2. The second end cap 6 may be unscrewed from the shaft 7 and removed from the body 2. This may be achieved by removing the handle 3 from the second end cap 6 as described above, and then unscrewing the end cap 6 from the shaft 7 by turning the handle 37. The walls of the second end cap 6 are provided with apertures 40 for its use as a container. Once removed from the body 2, the end cap 6 may be carried around by the apertures 40 and used as a receptacle for various objects and material. The compression disk 38, which will be described below, can serve as a lid for the end cap 6 when removed from the roller 1.
Removal of the second end cap 6 leaves a large aperture at the end of the body 2 which allows material to be placed into the chamber 8. This material may comprise grass cuttings or other garden refuse. Such material tends to be bulky with a relatively low density. The body 2 may thus be used as a storage or transporting container for such material. In order to make efficient use of the chamber 8, material may be placed into the chamber 8 and then compressed, allowing more material to be added. This is achieved by screwing a compression disk 38 onto the threaded shaft 7. The compression disk 38 is of substantially planar configuration having a central aperture adapted to receive the screw-threaded shaft 7. Towards the periphery of one face of the compression disk 38 there is located a handle 39 for turning the disk about the shaft 7 in order to move the disk 38 along the shaft 7 as desired. Turning the disk by use of the handle 39 allows the disk to be moved towards the first end cap 5, thus effectively compressing the waste. The disk may then be unscrewed from the shaft 7 in order to allow more material to be added. In an alternative embodiment, the compression disk 38 may be adapted to be released from the screw thread of shaft 7 in order to rapidly slide the disk 38 to a desired location before engaging with the screw thread.
As mentioned above, the chamber 8 defines a volume of around 100 litres. In many instances, it would be preferable to have a chamber of smaller volume, for example of around 30 litres. As illustrated in
The volume within the second tubular wall 41 and the first and second end caps 5 and 6 thus defines a second chamber 42 of around 30 litres. As shown in
In addition to using the second chamber 42 as a pressurised container for liquid, it may also be used to contain a smaller volume of liquid that the first chamber 8 for use as a “rolling” weight only. This has advantages in preventing “sloshing” of a small amount of liquid in the larger first chamber 8 and also in that fewer pumps of the pump mechanism are needed to pressurise a smaller volume of liquid.
Aeration of ground may be performed to enhance and improve its properties. This may be done by inserting hollow spikes or tines into the ground in order to reduce compaction. The use of the roller 1 as an aerator is demonstrated in
A further use of the roller 1 is shown in
In use, the roller 1 may be trundled along the ground with the blade 50 adjusted in order to cut the edge of a lawn.
Number | Date | Country | Kind |
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0317019.8 | Jul 2003 | GB | national |
This application is an U.S. national phase application under 35 U.S.C. §371 based upon co-pending International Application No. PCT/GB2004/003167 filed Jul. 21, 2004. Additionally, this U.S. national phase application claims the benefit of priority of co-pending International Application No. PCT/GB2004/003167 filed Jul. 21, 2004, and United Kingdom Application No. GB 0317019.8 filed Jul. 21, 2003. The entire disclosures of the prior applications are incorporated herein by reference. The international application was published in the English language on Feb. 10, 2005 under Publication No. WO 2005/011356 A1.
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/GB04/03167 | 7/21/2004 | WO | 1/19/2006 |