Patent Grant
8628427
This disclosure relates to a floor system which has means for varying the contour of the floor vertically, to provide varying undulations as desired. The disclosure is particularly useful and particularly intended for use as an artificial golf putting green, so that the undulations in the floor can mimic the undulations found in typical golf greens. However, the disclosure has many other potential applications, such as any situation where it is or may be desirable to be able to produce a surface with undulations, and to be able to readily vary or reconfigure those undulations.
More particularly, the disclosure involves a floor surface, supported by a number of controllable jacks or like devices at a number of locations. Selectively varying the height of the jacks or other devices produces undulations of the floor surface as desired.
The prior art includes various systems for varying the contour of floors, such as wedges (inclined planes) operable from a side of the floor to raise or lower blocks which support the floor surface. However, to the best of the inventors' present knowledge, there are no prior art systems which employ remotely-controlled jacks or like devices in any configuration as effectively as in the present disclosure.
In view of the preceding, it is an aspect of the disclosure to provide a floor system which has variable contour floor.
In the disclosure, the floor system has a somewhat flexible floor assembly, supported by a matrix of spaced-apart vertically-adjustable devices, such as electrically-operated jacks for example. The devices are centrally individually controlled whereby height of the devices may be individually varied so that the floor surface may have its contour varied as desired.
Preferably but not necessarily, the disclosure further includes the vertically-adjustable devices being controlled by a computer. Preferably but not necessarily, the computer accesses data corresponding to a number of selectable pre-configured contours, such that selection of one of the pre-configured contours causes the height of the devices to vary so as to move the floor surface to a configuration corresponding to the selected pre-configured contour. The pre-configured contour may be, for example, a simulation of an existing “real” golf green.
Throughout this description and in the claims, “golfing surface” normally means a golf green, but may also include golf tee areas, golf fairways, or other golf surfaces, including mini-golf surfaces.
Further aspects of the disclosure will be described or will become apparent in the course of the following detailed description.
In order that the disclosure may be more clearly understood, exemplary embodiments thereof will now be described in detail, as examples only, with reference to the accompanying drawings, in which:
As seen most clearly in
Each joist assembly 2 has at least two joist sections 5, there being three such sections in the illustrated embodiment. Theoretically, there could be an unlimited number of such joist sections, depending on how large a surface is desired.
The adjacent joist sections 5 are offset to overlap each other, and are provided with a slotted aperture 6 adjacent each end. The joist assemblies 2 run parallel to each other, and may be spaced apart by any distance suitable to meet the conflicting requirements of being sufficiently close to each other to adequately support the weight of the floor and people on the floor, and sufficiently far apart to provide a desired degree of flexibility in order for the contour of the floor to be adjusted.
Generally rigid but slightly flexible metal rods 7, such as 1-inch diameter steel rods, extend longitudinally through the slotted apertures 6 of the joist assemblies 2, both where adjacent joist sections 5 overlap, and at outer ends of the joist assemblies. The rods are supported on vertically-adjustable devices such as jacks 8, as described in greater details later. In each case, a single rod could extend the length of the floor assembly, or for larger installations, the total length could be made up from several shorter rods. At each location where adjacent joist sections overlap, the rod acts as a pivot axis, such that the joist sections can rotate about that axis. Furthermore, by virtue of the slotted apertures 6, the joist sections can float longitudinally on the rods, in addition to being able to slide laterally, i.e. in the direction of the length of the rods. This allows the floor assembly to flex.
Looking at
The slotted apertures 6 are thus important. In vertical dimension, they need only accommodate the diameter of the rods 7. However, in horizontal dimension, it is important that the apertures be sufficiently long to allow the joist sections to displace as the contour of the floor system is varied. Otherwise, it can be appreciated that raising one area of the floor system would result in strong tensile forces in the subfloor 3, and lowering an area would result in strong compressive forces; the jacks 8 would be working against those forces. However, with the slotted apertures, the joist sections 5 are in effect floating on the rods, in both horizontal directions, i.e. laterally and longitudinally. Thus although the subfloor and floor assembly is secured to the joists, the joist themselves “float” to allow the necessary amount of flexing.
In the preferred embodiment, the joist sections are lengths of 2×8 lumber, each approximately 6 feet long and spaced 2 feet apart, but obviously different materials could be used, and different dimensions could be employed, as determined by routine engineering and experimentation. Spacing of 16 inches or 19.2 inches could also conveniently be used, for example, to simply accommodate 8-foot sheathing sheets. The metal rod 7 is a 1-inch diameter steel rod, but again a different material and/or different diameter could be selected, as long as the rod is sufficiently strong to support the joist sections and thus the overall floor assembly, yet sufficiently flexible to allow the contour of the floor to be varied.
The subfloor, comprising one or more sheathing layers 3, is secured to the joist sections by screws or nails or other suitable means. For simplicity of illustration, only one layer is shown in
For the smoothest contours, it is preferable that the seams between adjacent sheathing layers 3 do not align with the metal rods 7.
The artificial turf layer 4 preferably but not necessarily is glued to the subfloor 3. For golf green simulations, one or more conventional golf cups 30 may be installed in the floor assembly, as desired. If desired, the cups may have an open bottom, fitted with ball collection tubing leading to a central collection point. This provides the possibility of manual or automatic metering, such that users of the system could be charged a fee based on the number of putts made.
As can be readily appreciated from
The afore-mentioned vertically-adjustable devices such as jacks 8 are positioned at various points under the rods 7. As seen in
In the preferred embodiment, each vertically-adjustable device or jack 8 is provided with a eye-bolt 9 or the like at the top thereof, and the rod 7 is routed through the eye-bolt.
The vertically-adjustable device or jack 8 may be, as illustrated in
Simple up and down controls for the jacks 8 may be connected to the motors 10 via wires 15, and the jacks may be individually controlled in this manner, for example from a panel where the individual controls are conveniently mounted. Conceivably, this function could be carried out wirelessly as well, if desired.
Preferably, however, the motors 10 are servo motors, and are controlled by a servo controller 20. The servo controller may be integrated with a computer 21, or may be a separate unit controlled by the computer.
The specific means by which the raising and lowering is accomplished is not essential to the disclosure as broadly defined. For example, it is conceivable, though likely not practical or cost effective, that hydraulic jacks could be employed, and that a manually operated or computer-controlled hydraulic system could be employed.
Similarly, it is not essential that a scissors-type jack be employed. As just one example, one or two CNC slides 40 could be mounted on the base surface 13, to produce linear movement of wedges (inclined planes) 41 to produce vertical movement. This is illustrated schematically only, in
An installation of the floor system will typically result in the flooring surface being at some height above the surrounding floor or base surface 13. Therefore, it will normally be preferable, though not essential, to provide an elevated platform 35 around the structure, as shown in
The surface of the platform may be covered with artificial turf if desired, and may be extended some distance, to act as a fixed artificial green. In fact, the movable portion of a complete installation may only be a small portion of the total surface covered in artificial turf. It is advantageous, for example, to provide a relatively large area of artificial turf adjacent to the artificial green, as a chipping area. For a chipping area, it may be preferably to use a much rougher turf, to simulate longer grass. One or more steps may be provided up to the platform.
In some installations, the flooring assembly may be recessed into the surrounding floor, or into the ground outdoors, with its upper surface flush with its surroundings. In such cases, for maintenance or repair purposes, it will be necessary to provide an access tunnel along one side of the installation, in case someone needs to have access to one of the jacks, for example. Similarly, in above-ground applications, any platform 35 must be readily removable or provided with access ports, so that someone can crawl underneath the assembly for any necessary maintenance.
Typically but not necessarily, the artificial green will be considerably smaller than the real green, or may have extreme contours which cannot be matched. In that case, the user may be provided with various options, including either scaling down the features of the real green proportionately to fit the artificial green, or maintaining the scale but selecting only a portion of the real green (“back right”, for example). If the artificial green is matched to a golf simulator, such as those manufactured and sold by About Golf, for example, then the approach shot to the green may dictate to the computer which portion of the green is to simulated. Of course if the ball is considered to have landed on the front left of the green, and the pin is on the back right of the green, some compromise will have to be made in simulating the putt. For example, the simulator simply may not permit very long putts to be made. How the marriage of the artificial green to a golf simulator is implemented in practice is beyond the scope of the present disclosure, but certainly the disclosure does offer that capability.
The above embodiments and variations are examples only. Additional embodiments and variations will be apparent or become apparent immediately or in the future to those knowledgeable in the field of the disclosure. The disclosure is not limited to the specific embodiments and variations described herein, but rather is defined by the claims which follow.
This is a formal application based on and claiming the benefit of U.S. Provisional Patent Application No. 61/301,727, filed Feb. 5, 2010, which is hereby incorporated by reference.
| Number | Name | Date | Kind |
|---|---|---|---|
| 3522947 | Anderson et al. | Aug 1970 | A |
| 3595581 | Anderson et al. | Jul 1971 | A |
| 4202547 | Mueller | May 1980 | A |
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| Number | Date | Country | |
|---|---|---|---|
| 20110192096 A1 | Aug 2011 | US |
| Number | Date | Country | |
|---|---|---|---|
| 61301727 | Feb 2010 | US |
