Patent Application
20110265888
1. Field of the Invention
The present invention relates to a sprinkler system and, in particular, to an irrigation sprinkler system provided with a hydraulically powered, hose winding apparatus.
2. Description of the Related Art
Home owners are known to install underground irrigation sprinkler systems which automatically irrigate their lawns. The underground sprinkler system is typically provided with plurality of strategically placed sprinklers to ensure even irrigation of the lawn. The underground sprinkler system may also be provided with timer set to irrigate the lawn at a predetermined time for at a predetermined duration. This is convenient because it does not require that an operator be available during the irrigation process. However, there are circumstances in which an underground sprinkler system may be neither available nor desirable. For example, the home owner may not be able to afford the cost of installing an underground sprinkler system. Alternatively, the cost of installing an underground sprinkler system may be difficult to justify if the house is being rented or sold.
Lawns are therefore frequently irrigated using an oscillating sprinkler. Oscillating sprinklers have a spray arm with a plurality of spaced apart nozzles along a longitudinal extent thereof. Pressurized fluid flowing to the oscillating sprinkler from a pressurized fluid supply is diverted into two streams. A portion of the fluid is diverted to actuate a cam that oscillates the spray arm. The remaining fluid is diverted to the spray arm where it is discharged through the nozzles. This causes a fan-shaped curtain of water to be sprayed over a rectangular area of the lawn. But lawns are often larger than the rectangular area covered by the oscillating sprinkler. The oscillating sprinkler must therefore be periodically moved to ensure even irrigation of the lawn. This is inconvenient because it requires that an operator be available during the irrigation process.
To overcome above disadvantage associated with oscillating sprinklers, it is known to use oscillating sprinklers in irrigation sprinkler systems which further include a hose winding apparatus and, in particular, a hydraulically powered, hose winding apparatus. Typically fluid flowing through the hose winding apparatus actuates a drive mechanism to rotate a hose reel. This draws the sprinkler along a substantially linear path towards the hose winding apparatus. Fluid is continuously discharged by the sprinkler as the sprinkler is drawn towards the hose winding apparatus, thereby allowing a larger area of lawn to be irrigated than would otherwise be possible with a stationary sprinkler.
U.S. Pat. No. 4,186,881 issued on Feb. 5, 2009 to Long discloses an irrigation sprinkler system which includes a portable vehicle having a hose reel connected to a pressurized fluid supply. A hose is carried by the reel and an end of the hose is connected to a travelling carriage having a water gun. The carriage is initially moved away from the vehicle by an external force. Fluid flowing through the system drives a turbine which rotates the hose reel and winds the hose thereon. The carriage and water gun are thereby drawn towards the vehicle at a selected speed so that a large area of earth is irrigated automatically.
U.S. Pat. No. 4,538,761 issued on Sep. 3, 1985 to Ruprechter et al. discloses an irrigation sprinkler system in which a hose reel is rotated by a pressurized fluid supply to wind up a hose. A hose guide is movable back and forth across the hose reel causing the hose to wind in layers on the hose reel. The hose guide is also coupled to a threaded spindle upon which a nut rides. A link connects the nut to a valve which throttles the flow of pressurized fluid to a hydraulically powered motor which progressively decreases the angular velocity of the hose reel as the hose is wound about the hose reel.
Yet, despite the disclosure of the above described systems; there remains a need for an inexpensive, compact hose winding apparatus that may be used in domestic applications.
It is an object of the present invention to provide an improved hose winding apparatus.
It is another object of the present invention to provide an inexpensive and compact hose winding apparatus that may be used in domestic applications.
There is accordingly provided a hydraulically powered, hose winding apparatus comprising a support and a hose reel rotatably mounted on the support. A hose is coupled to the hose reel whereby the hose winds about the hose reel when the hose reel is rotated in a first direction. Rotation of the hose reel is driven by a cooperating valve mechanism and a gear mechanism. The valve mechanism has an inlet port and an outlet port. The inlet port receives pressurized fluid from a pressurized fluid source. The outlet port is in fluid communication with the hose. A main conduit extends between the inlet port and the outlet port. A turbine is disposed along the main conduit between the inlet port and the outlet port. Pressurized fluid flowing through the valve mechanism rotates the turbine. The gear mechanism has a first gear coupled to the valve mechanism and a second gear coupled to the hose reel. The first gear is coupled to the turbine so that rotary motion is transmitted from the turbine to the first gear. The first gear transmits rotary motion from the turbine to the second gear. This causes the hose reel to rotate in the first direction and the hose to wind about the hose reel.
The valve mechanism may further include a bypass conduit that allows fluid to flow around the turbine. First and second valve members are disposed in the main conduit upstream of the turbine. The first valve member is disposed downstream of the bypass conduit and the second valve member is disposed upstream of the bypass conduit. There is a lever for actuating the first valve member to close the main conduit. The lever extends outwardly and upwardly of the support and the first valve member closes the main conduit when the lever is pushed towards the support. The first valve member may be a gate.
The gear mechanism may further include a third gear coupled to both the second gear and the second valve member. The second gear transmits motion to the third gear when the hose reel is rotated in the first direction. The third gear actuates the second valve member to incrementally close the main conduit when the hose reel is rotated in the first direction. The second valve mechanism may be a projection which is reciprocatingly extended into the main conduit to restrict or block the flow of the fluid through the main conduit. The gear mechanism may still further include a gear for ensuring even winding of the hose.
The present invention provides a hydraulically powered, hose winding apparatus that allows for even irrigation of a lawn without the requirement that an operator be available during the irrigation process.
The invention will be more readily understood from the following description of the embodiments thereof given, by way of example only, with reference to the accompanying drawings, in which:
Referring to the drawings and first to
Pressurized fluid flows from the pressurized fluid supply 20 to the hose winding apparatus 12 via the input hose 18. The pressurized fluid flows through the hose winding apparatus 12, and from the hose winding apparatus 12 to the sprinkler 24 via the output hose 22. The pressurized fluid is then discharged through a plurality of nozzles 26a, 26b and 26c on the sprinkler 24. This causes a fan-shaped curtain of fluid 28 to be sprayed over an area of a lawn 30 being irrigated. Simultaneously, pressurized fluid flowing through the hose winding apparatus 12 drives the hose reel 16 to rotate and thereby winds the output hose 22 about the hose reel 16. This causes the sprinkler 24 to be drawn towards the hose winding apparatus 12 and allows a larger area of the lawn 30 to be irrigated than would otherwise be possible if the sprinkler 24 remained stationary. The sprinkler system 10 is conventional as thus far described.
However, the hose winding apparatus 12 of the sprinkler system 10 disclosed herein is provided with an improved mechanism for winding the output hose 22. As best shown in
Referring back to
The projection 52 may be incrementally and reciprocatingly extended into the main conduit 46 to restrict or block the flow of the fluid through the main conduit 46. An O-ring 53 disposed about the projection 52 seals the main conduit 46 with respect to the projection 52. The bypass conduit 50 is positioned to allow fluid to flow from the inlet port 42 to the outlet port 44 when the projection 52 blocks the main conduit 46. However, upstream access to the bypass conduit 50 is blocked when the gate 54 is closed. The gate 54 is actuated by a lever 55 which is movable between a position in which the gate 54 and a position in which the gate 54 is closed. The position of the lever 55 when the gate 54 is closed is shown in ghost in greater detail in
Referring back to
The gear mechanism 60 further includes a gear train 72 which is meshed with the second gear 64. The gear train 72 including gears 73, 75 and 77 functions as an idler between the second gear 64 and a rack gear 74. The rack gear 74 is operatively connected to and reciprocatingly actuates the projection 52 of the valve mechanism 40. In this example, projection 52 of the valve mechanism 40 is a distal end of the rack gear 74. A third gear 76 is also meshed with the second gear 64. It will be understood by a person skilled in the art that the term “gear” as used herein is meant to include any mechanism that performs a specific function in the sprinkler system and is not to be restriction to the pinion gears shown in the drawings.
As shown in
Referring back to
In operation, and with reference to
The second gear 64 also simultaneously actuates the gear train 72 and third gear 74 as the hose reel 16 is being rotated. Actuation of the gear train 72 causes the rack gear 74 to extend the projection 52 of the valve mechanism 40 in the main conduit 46 thereof. This restricts the flow of pressurized fluid past the turbine 48 and thereby slows the rotation of the hose reel 16 as the sprinkler 24 approaches the hose winding apparatus 12. The bypass conduit 50 allows a constant fluid pressure to be provided to the sprinkler 24 so that fluid may be continuously discharged by the sprinkler 24 as it is drawn towards the hose winding apparatus 12. Rotation of the third gear 76 cause the opposing double helical gear 78 to rotate and the hose guide 79 to reciprocatingly travel along the slit 81 in the support 14. This ensures uniform winding of the output hose 22 about the hose reel 16.
The sprinkler 24 pushes the lever 82 into the support 14 of the hose winding apparatus 12 when the sprinkler 24 comes into contact with the hose winding apparatus 12. As best shown in
As shown in
The present invention accordingly provides a hydraulically powered, hose winding apparatus that allows for even irrigation of a lawn without the requirement that an operator be available during the irrigation process.
It will be understood by a person skilled in the art that many of the details provided above, are by way of example only, and are not intended to limit the scope of the invention which is to be determined with reference to following claims.
