1. Field of the Invention
The present invention relates generally to the field of snowboards, and more particularly, to a snowboard tether device.
2. Description of the Related Art
According to research conducted on behalf of the inventors, seventy-two percent (72%) of snowboarders experience knee and/or ankle pain while on the chairlift because only one foot is attached to the snowboard, and the entire weight of the snowboard is therefore borne by one leg (usually the left leg). Some snowboarders compensate for this discomfort by positioning one side of the snowboard on top of the free foot (i.e., the foot that is not attached to the board).
Market research indicates that there were approximately five million snowboarders in the United States in 2007. If seventy-two percent (72%) of them are experiencing the problem described above, then between three and four million people are suffering on chairlift rides each year. Not only are the chairlift rides uncomfortable for these people, but the pain and discomfort they experience on the chairlift can lead to fatigue, which causes shorter days on the slopes and ultimately contributes to the likelihood of injury.
What is needed is a device that lessens or eliminates the burden placed on the knee and ankle of a snowboarder on the chairlift when the other foot is disengaged from the snowboard. The device must be easy to use and quick to engage and disengage, and it should have built-in safety features so as not to pose additional hazards to the snowboarder. The ideal device would also not be cumbersome or visible when the snowboarder is snowboarding.
Although there have been a few innovations relating to tethering systems for snowboards, none of them possesses the structural and functional advantages of the present invention. Described below are several inventions that deal generally with tether or harness systems, some of which relate to snowboarding.
U.S. Pat. No. 7,389,750 (Rogers et al., 2008) provides a quick connect tether system for a pet in which the leash and collar are magnetically coupled. The coupling has a female section and a male section that interconnect, and a magnet is disposed within the receptacle of the female section. The male section comprises a plunger that is magnetically attracted to the magnet in the female receptacle, and locking elements hold the male plunger in place within the receptacle.
U.S. Pat. No. 7,252,450 (Aguirre et al., 2007) discloses a writing instrument holding and retaining device comprising a wristband/bracelet and a tether/leash with a writing instrument holder. The tether/leash connects the writing instrument holder to the wristband. The writing instrument can be secured to the wristband when the writing instrument is not in use, and the tether/leash can be fastened to the wristband to keep it from dangling. The invention is intended to keep busy people from losing their writing instruments.
U.S. Pat. No. 6,702,328 (Malleis et al., 2004) describes a binding and boot engagement system for use with a snowboard with a step-in binding system. The system comprises a flexible tether, one end of which attaches to the snowboard and the other end of which attaches to the snowboarder. The tether is comprised of two pieces of nylon strap that attach to each other by hook-and-loop fastener in roughly the middle of the tether. The patent expressly contemplates that magnetic couplers may be used in lieu of the hook-and-loop fastener system, although no detail is provided as to how the magnetic couplers would be configured. The top half of the tether attaches to a belt that is worn around the waist of the snowboarder. In one embodiment, the top half of the tether comprises a retractable cable. A clip on one end of the bottom half of the tether attaches to an anchor that is fixedly attached to the snowboard.
U.S. Pat. No. 6,089,592 (Negus, 2000) involves a ski or skateboard harness assembly in which a person's leg and foot are secured to a skateboard or snowboard that does not otherwise have a binding system. A first strap is wrapped around the person's leg beneath the knee and above the calf, and a second strap is attached to the first strap and removably attached to the board. The second strap is held in tension and in sliding communication with the board so that the person's leg can be moved longitudinally along the board.
U.S. Pat. No. 3,931,656 (Thomson, 1976) discloses a surfboard leash for attaching a surfboard to a surfer. The surfboard leash has a tubular outer element made of rubber and a partially resilient inner reinforcement element made from a material that has limited stretching ability (such as braided nylon cord). The leash attaches on one end to a fixing ring or other mounting device on a surfboard. The patent does not describe how the leash attaches to the surfer, although what appears to be a leg band is shown in the figures.
U.S. Patent Application Pub. No. 2008/0108260 (Wiginton) describes a tether system for surfing in which a flexible strap is detachably connected to a surfboard and a surfer. The strap is connected at one end to the surfboard with a leash plug that is inserted into the deck of the surfboard. The other end of the strap has a flared end, and the strap is attached to the surfer with a coarse patch (preferably VELCRO™) that is free to slide up and down the flexible strap but cannot slide over the flared end.
U.S. Patent Application Pub. No. 2006/0113787 (Siebrecht) involves a support device for easing the strain on the legs of the snowboarder by supporting the weight of the board when the snowboarder is on the chair lift or snowboarding. The device comprises a belt worn around the snowboarder's waist, a down strap, a flexible link, and a quick release clip. One end of the strap is attached to the snowboard with the quick release clip, and the other end of the strap is attached to the flexible link, which in turn is attached to the waist belt. The disadvantages of this invention are that it requires the snowboarder to wear a waist belt, and the strap is not retractable, which poses a safety hazard.
The present invention is a snowboard tether device comprising a base and a dome; wherein the base is affixed to a snowboard; wherein the base comprises two finger grips, a thumb grip and a receiving area for the dome; wherein the receiving area comprises a steel plate; wherein the dome comprises a top part, a bottom part, a shaft and a spool; wherein the bottom part of the dome comprises an underside with one or more magnets; wherein the shaft extends vertically through the top and bottom parts of the dome and through the center of the spool; wherein a spring is wound around one part of the spool and a cable is wound around another part of the spool; wherein one end of the spring is fixedly attached to the shaft and another end of the spring is fixedly attached to the spool; wherein one end of the cable is fixedly attached to the spool and another end of the cable is attached to the base; wherein when the dome is pulled away from the base, thereby extending the cable, the spool is rotated in one direction, thereby creating tension in the spring; wherein the shaft comprises a toothed section; wherein the spool and the bottom part of the dome each comprises a tooth receiving area; wherein when the shaft is in a locked position, the toothed section of the shaft is engaged with both the tooth receiving area of the spool and the tooth receiving area of the bottom part of the dome; wherein when the shaft is in an unlocked position, the toothed section of the shaft is engaged with the tooth receiving area of the bottom part of the dome but is not engaged with the tooth receiving area of the spool; wherein when the shaft is in a locked position, the spool does not rotate, and the length of cable from the dome to the base is fixed; and wherein when the shaft is in an unlocked position, the spool is allowed to rotate in a direction that relieves the tension created in the spring, thereby retracting the cable and pulling the dome to the receiving area of the base.
In a preferred embodiment, the shaft comprises two circular recesses; the top part of the dome comprises a ceiling and two fingers that extend downward from the ceiling of the dome; each finger comprises a knob; and the knobs fit into the circular recesses in the shaft to maintain the shaft in a locked or unlocked position.
In a preferred embodiment, the toothed section of the shaft has a height and the tooth receiving area of the bottom part of the dome has a height; and the height of the toothed section of the shaft is roughly equal to the height of the tooth receiving area of the bottom part of the dome.
In a preferred embodiment, the cable exits the dome via an aperture in the dome; the cable enters the base via an aperture in the base; and when the dome is situated on top of the receiving area of the base, the apertures in the dome and in the base are horizontally aligned. Preferably, the aperture in the base is situated between the two finger grips.
In a preferred embodiment, the receiving area has a surface area and the underside of the bottom part of the dome has a surface area; and the surface area of the receiving area on the base is less than the surface area on the underside of the dome.
In one embodiment, when the cable is extended, the magnets on the underside of the dome are coupled to a steel token in a pocket of a snowboarder. In an alternate embodiment, when the cable is extended, the magnets on the underside of the dome are coupled to a steel plate inside a fabric patch on an article of clothing worn by a snowboarder.
In yet another alternate embodiment, when the cable is extended, the magnets on the underside of the dome are coupled to a steel ring of a clothing clip. Preferably, the underside of the dome comprises a recess and the magnets on the underside of the dome surround the recess; the clothing clip comprises a hub surrounded by a steel ring; and the hub of the clothing clip fits into the recess on the underside of the dome. Preferably, the clothing clip comprises a top plate and a bottom plate; a piece of clothing is placed between the top plate and the bottom plate; and the bottom plate comprises a plurality of ridges to facilitate adherence of the clip to the piece of clothing.
In a preferred embodiment, the base is comprised of thermoplastic elastomer. Preferably, the dome is comprised of acrylonitrile-butadiene-styrene.
1 Base
2 Dome
3 Top part (of dome)
4 Bottom part (of dome)
5 Logo
6 Finger grip
7 Thumb grip
8 Shaft
9 Cable
10 Magnet
11 Steel plate
12 Receiving region (of base)
13 Spool
14 Aperture (in dome)
15 Aperture (in base)
16 Plug
17 Vertical slit
18 Circular recess
19 Toothed section (of shaft)
20 Tooth receiving section (of spool)
21 Tooth receiving section (of bottom part of dome)
22 Finger
23 Knob
24 Pocket token
25 Clothing patch
26 Clothing clip
27 Steel ring
28 Top plate (of clothing clip)
29 Bottom plate (of clothing clip)
30 Screw
31 Hub (on top plate of clothing clip)
32 Recess (in underside of bottom part of dome)
33 Hole (in bottom section of spool)
34 Slit (in shaft)
35 Rib
The spool 13 (not shown) is located inside the dome 2 (see
In a preferred embodiment, the surface area of the receiving area 12 on the base 1 is less than the surface area of the underside of the bottom part 4 of the dome 2 such that a portion of the dome 2 extends beyond the base 1 when the dome 2 is resting on the base 1 (see
The shaft 8 comprises two circular recesses 18 around the perimeter of the shaft 8, approximately one-third of the way down the shaft 8 (from the top). The purpose of these circular recesses 18 will become clear in relation to
In operation, the dome 2 rests on the base 1 when the tether system is not in use (for example, when the snowboarder is snowboarding). In this position (with the dome 2 on the base 1), the shaft 8 will be in an unlocked position. To use the tether system, the snowboarder simply lifts the dome 2 from the base 1 and either holds the dome 2 in his hand or, preferably, couples the underside of the bottom part 4 of the dome 2 (with the magnets 10) to a piece of steel (see
In the second embodiment (
In the third embodiment (
The hub 31 is preferably circular in shape and extends outward from the center of the top plate 28. The hub 31 is preferably sized so that it fits within the recess 32 on the underside of the bottom part 4 of the dome 2 that is created when the shaft 8 is in an upward (locked) position (see
The advantages of the present invention are numerous and include the fact that the tether system is not visible when not in use and the fact that no professional installation is required to use the present invention (the base is simply adhered to the snowboard with an adhesive strip). The magnetic connection between the base 1 and the dome 2 ensures that the dome 2 stays securely adhered to the base 1 during the snowboarder's trip down the slope, no matter how aggressive the terrain and regardless of the snowboarder's experience level. The fact that magnets are used rather than clips or other coupling devices and the fact that the cable is fully retracted when not in use are additional safety features of the present invention.
Although the preferred embodiment of the present invention has been shown and described, it will be apparent to those skilled in the art that many changes and modifications may be made without departing from the invention in its broader aspects. The appended claims are therefore intended to cover all such changes and modifications as fall within the true spirit and scope of the invention.