The disclosure generally relates to the field of appliances worn by humans. Exemplary embodiments relate to appliances worn by a first human that enables a second human to help stabilize or balance the first human.
There are many circumstances when a first human will help stabilize a second human's body. For instance, during physical therapy, while learning to ride a bike, etc.
Exemplary embodiments are directed to harnesses worn by a child desiring to learn how to ride a bicycle or other piece of sports equipment. Such sports equipment including, but not limited to, bicycles, scooters, roller skates, inline skates, skis, snowboards, skateboard, and ice skates. The most typical way for a child to learn to ride a bicycle is through use of “training wheels” attached to the rearward portion of the bicycle, these training wheels helping to prevent the bicycle from tipping over as the child loses balance. However, for many children, the training wheels become an impediment to being able to quickly learn how to ride the bicycle as they come to rely on the training wheels as merely additional wheels instead of as a safety means. Another way for child to learn to ride a piece of sports equipment is through a parent jogging along side the sports equipment, helping to balance it as necessary as the child learns how to balance the sports equipment his/herself.
Several exemplary harnesses are described herein, including a harness for wearing by a child, the harness having a handle for grasping by an adult. The harness assisting the child in attaining proficiency and skill by allowing the adult to be positively in control of the child's torso and help to provide balance without interfering with the sports equipment. The harness allowing the parent to have a more appropriate posture while helping to balance the child on the sports equipment. The harness also providing additional safety without being an actual safety harness, helping to prevent injury of both the parent and child (e.g., back injuries, injuries from falling).
An exemplary harness comprises a plate, a handle, a lumbar strap, a chest strap, a first shoulder strap, and a second shoulder strap.
Another exemplary harness comprises a plate, a handle, a lumbar strap, a chest strap, a first shoulder strap, and a second shoulder strap. The plate defines at least one chest strap connector for connecting with the chest strap. The plate defines at least one first shoulder strap connector for connecting with the first shoulder strap. The plate defines at least one second shoulder strap connector for connecting with the second shoulder strap. The plate defines at least one handle connector for connecting with the handle. The handle is for grasping by a non-wearer of the harness. The handle configured for connection with the plate at the handle connector. The lumbar strap is for strapping around the lower back of a wearer of the harness. The lumbar strap has a lumbar strap first end extending to a lumbar strap second end. The lumbar strap has a center portion generally between the lumbar strap first end and the lumbar strap second end. The lumbar strap first end comprises a lumbar strap first buckle. The lumbar strap second end comprises a lumbar strap second buckle. The lumbar strap first buckle and the lumbar strap second buckle can connect with one another. The chest strap is for strapping around the chest of a wearer of the harness. The chest strap has a chest strap first end extending to a chest strap second end. The chest strap first end comprises a chest strap first buckle. The chest strap second end comprises a chest strap second buckle. The chest strap first buckle and the chest strap second buckle can connect with one another. The first shoulder strap is for strapping over a first shoulder a wearer of the harness. The first shoulder strap has a first shoulder strap first end extending to a first shoulder strap second end. The first shoulder strap first end connects with the lumbar strap adjacent the lumbar strap first end. The first shoulder strap second end connects with the lumbar strap adjacent the lumbar strap center portion. The second shoulder strap is for strapping over a second shoulder a wearer of the harness. The second shoulder strap has a second shoulder strap first end extending to a second shoulder second end. The second shoulder first end connects with the lumbar strap adjacent the lumbar strap second end. The second shoulder strap second end connect with the lumbar strap adjacent the lumbar strap center portion.
Another exemplary harness comprises a plate, a handle, a lumbar strap, a chest strap, a first shoulder strap, and a second shoulder strap. The plate defines at least one chest strap connector for connecting with the chest strap. The plate defines at least one first shoulder strap connector for connecting with the first shoulder strap. The plate defines at least one second shoulder strap connector for connecting with the second shoulder strap. The plate defines at least one handle connector for connecting with the handle. The handle is for grasping by a non-wearer of the harness and can connect with the plate at the handle connector. The lumbar strap is for strapping around the lower back of a wearer of the harness. The lumbar strap has a lumbar strap first end extending to a lumbar strap second end. The lumbar strap has a center portion generally between the lumbar strap first end and the lumbar strap second end. The lumbar strap first end has a lumbar strap first buckle. The lumbar strap second end has a lumbar strap second buckle. The lumbar strap first buckle and the lumbar strap second buckle can connect with one another. The lumbar strap first buckle and the lumbar strap second buckle are preferably adjustable buckles. The chest strap is for strapping around the chest of a wearer of the harness. The chest strap has a chest strap first end extending to a chest strap second end. The chest strap first end has a chest strap first buckle, and the chest strap second end has a chest strap second buckle. The chest strap first buckle and the chest strap second buckle can connect with one another. The chest strap first buckle and the chest strap second buckle are preferably adjustable buckles. The first shoulder strap is for strapping over a first shoulder a wearer of the harness. The first shoulder strap has a first shoulder strap first end that extending to a first shoulder strap second end. The first shoulder strap first end connects with the lumbar strap adjacent the lumbar strap first end. The first shoulder strap second end connects with the lumbar strap adjacent the lumbar strap center portion. The second shoulder strap is for strapping over a second shoulder a wearer of the harness. The second shoulder strap has a second shoulder strap first end extending to a second shoulder second end. The second shoulder first end connects with the lumbar strap adjacent the lumbar strap second end. The second shoulder strap second end connects with the lumbar strap adjacent the lumbar strap center portion. A first leg strap is provided for strapping around a first leg of a wearer of the harness, and a second leg strap is provided for strapping around a second leg of a wearer of the harness. The first leg strap and the second leg strap preferably attach to the lumbar strap. The first leg strap has a first leg strap first end extending to a first leg strap second end. The first leg strap first end has a first leg strap first buckle. The first leg strap first buckle and the first leg strap second end can connect with one another. The second leg strap has a second leg strap first end extending to a second leg strap second end. The second leg strap first end has a second leg strap first buckle. The second leg strap first buckle and the second leg strap second end can connect with one another.
Another exemplary harness comprises a plate, a handle, a lumbar strap, a chest strap, a first shoulder strap, and a second shoulder strap. The plate has a center point. The plate has a pair of chest strap connectors for connecting with the chest strap, the chest strap connectors are spaced apart from one another with the center point located there-between. The plate has a pair of first shoulder strap connectors for connecting with the first shoulder strap, the first shoulder strap connectors are spaced apart from one another with the center point located there-between. The plate has a pair of second shoulder strap connectors for connecting with the second shoulder strap, the second shoulder strap connectors are spaced apart from one another with the center point located there-between. The plate has a pair of handle connectors for connecting with the handle, the handle connectors are spaced apart from one another with the center point located there-between. The handle is for grasping by a non-wearer of the harness. The handle has a handle strap. The handle strap connects with the handle connectors. The lumbar strap is for strapping around the lower back of a wearer of the harness. The lumbar strap has a lumbar strap first end extending to a lumbar strap second end. The lumbar strap has a center portion generally between the lumbar strap first end and the lumbar strap second end. The chest strap is for strapping around the chest of a wearer of the harness. The chest strap has a chest strap first end that extends to a chest strap second end, the chest strap connecting with the chest strap connectors. The first shoulder strap is for strapping over a first shoulder a wearer of the harness. The first shoulder strap has a first shoulder strap first end extending to a first shoulder strap second end. The first shoulder strap first end connects with the lumbar strap adjacent the lumbar strap first end. The first shoulder strap second end connects with the lumbar strap adjacent the lumbar strap center portion. The first shoulder strap connects with the first shoulder strap connectors. The second shoulder strap is for strapping over a second shoulder a wearer of the harness. The second shoulder strap has a second shoulder strap first end extending to a second shoulder second end. The second shoulder first end connects with the lumbar strap adjacent the lumbar strap second end. The second shoulder strap second end connects with the lumbar strap adjacent the lumbar strap center portion. The second shoulder strap connects with the second shoulder strap connector. The handle strap, chest strap, first shoulder strap and second shoulder strap cross one another.
Additional understanding of the devices and methods contemplated and/or claimed by the inventor(s) can be gained by reviewing the detailed description of exemplary devices and methods, presented below, and the referenced drawings.
While the presently disclosed inventive concept(s) is susceptible of various modifications and alternative constructions, certain illustrated embodiments thereof have been shown in the drawings and will be described below in detail. It should be understood, however, that there is no intention to limit the inventive concept(s) to the specific forms disclosed. On the contrary, the presently disclosed and claimed inventive concept(s) is to cover all modifications, alternative constructions, and equivalents falling within the spirit and scope of the inventive concept(s) as defined in the claims.
The following description and the referenced drawings provide illustrative examples of that which the inventor regards as his invention. As such, the embodiments discussed herein are merely exemplary in nature and are not intended to limit the scope of the invention, or its protection, in any manner. Rather, the description and illustration of these embodiments serve to enable a person of ordinary skill in the relevant art to practice the invention.
The use of “e.g.,” “etc,” “for instance,” “in example,” and “or” and grammatically related terms indicates non-exclusive alternatives without limitation, unless otherwise noted. The use of “including” and grammatically related terms means “including, but not limited to,” unless otherwise noted. The use of the articles “a,” “an” and “the” are meant to be interpreted as referring to the singular as well as the plural, unless the context clearly dictates otherwise. Thus, for example, reference to “a strap” includes two or more such straps, and the like. The use of “exemplary” means “an example of” and is not intended to convey a meaning of an ideal or preferred embodiment.
The use of “sports equipment” is intended to generally refer to sports equipment worn or ridden by an individual (e.g., bicycles, scooters, roller skates, inline skates, skis, snowboards, skateboard, ice skates).
Referring initially to
The plate 20 preferably has a first side 21 opposite a second side 23 defining a thickness there-between. In the embodiment illustrated in
The plate 20 preferably defines at least one chest strap connector 24 for connecting with the chest strap 70. It is preferred that the chest strap connector 24 comprise at least one slot defined through the thickness of the plate 20. In the embodiment illustrated in
The plate 20 preferably also defines at least one first shoulder strap connector 29 for connecting with the first shoulder strap and at least one second shoulder strap connector 34 for connecting with the second shoulder strap 90.
The first shoulder strap connector 29 having at least one slot defined through the thickness of the plate 20. In the embodiment illustrated in
The second shoulder strap connector 34 having at least one slot defined through the thickness of the plate 20. In the embodiment illustrated in
The plate 20 having a center point 39, shown in
Preferably, the first chest strap slot center 26 and the second chest strap slot center 28 are equidistant from the center point 39. Preferably, the first upper shoulder strap slot center 31 and the first lower shoulder strap slot center 33 are equidistant from the center point 39. Preferably, the second upper shoulder strap slot center 36 and the second lower shoulder strap slot center 33 are equidistant from the center point 39. Preferably, the first chest strap slot center 26, the second chest strap slot center 28, the first upper shoulder strap slot center 31, the first lower shoulder strap slot center 33, the second upper shoulder strap slot center 36, and the second lower shoulder strap slot center 33 are spaced generally sixty degrees apart from one another.
Referring back to the embodiment illustrated in
The handle 41 is configured for grasping by a non-wearer of the harness 10. The handle 41 is configured for connection with the plate 20 at the handle connector 40. In the embodiment illustrated in
The handle strap 44 comprising a hand-hold 48. In the illustrated embodiment, the hand-hold 48 comprising a plastic, rubber or poly-resin tubular portion that may have a foam grip or other gripping material (e.g., rubber) exterior. The handle strap 44 extends through the hand-hold 48. The handle strap 44 having a first end and a second end. The first handle strap end and the second handle strap end are configured for connecting together to form a handle strap loop, e.g., by sewing, bonding, adhesives, welds, fasteners. It is preferred that the handle be oriented vertically, as shown in
The lumbar strap 50 is for strapping around the lower back of a wearer of the harness 10. The lumbar strap 50 has a first end 51 extending to a second end 52. The lumbar strap 50 has a center portion 53 generally between the first end 51 and the second end 52.
The first end 51 has a first buckle 52. The second end 54 comprising a second buckle 55. The first buckle 52 and the second buckle 55 configured for connection with one another, preferably a releasable connection. The preferred buckle style is commonly known as a “side release buckle.” It is preferred that the first buckle 52 and the second buckle 55 are adjustable buckles, able to adjust the length of the lumbar strap 50 for a more secure fit on the wearer. It is preferred that the first buckle 52 and second buckle 55 be made of plastic, e.g., nylon.
In the embodiment illustrated in the drawings, the lumbar strap 50 comprises three segments, namely a first segment 56, a second segment 57 and a third segment 58. The first segment 56 extending between the first buckle 52 and a first loop 59. The loop 59 preferably a loop or ring made of metal or plastic. The third segment 58 extending between the second slide buckle 61 and a second loop 60. The loop 60 preferably a loop or ring made of metal or plastic. The second slide buckle 61 resting against the first loop 59 when tension is applied to the harness 10 and the first slide buckle 62 resting against the second loop 60 when tension is applied to the harness 10.
The second segment 57 extending between a first slide buckle 61 and a second slide buckle 62. The slide buckles are preferably made from plastic (e.g., nylon) or metal. The second segment 57 preferably has a first end that extends through the first loop 59 to the first slide buckle 61, and a second end that extends through the second loop 60 to the second slide buckle 62. In such a configuration, the lumbar strap 50 can have its length changed to accommodate varying sizes of users.
The chest strap 70 is for strapping around the chest of a wearer of the harness 10, providing a firm fit to the chest. The chest strap 70 having a first end 71 extending to a second end 73. The first end 71 has a first buckle 72. The second end 73 comprising a second buckle 74. The first buckle 72 and the second buckle 74 are preferably configured for connection with one another, wherein the first buckle 72 and the second buckle 74 are adjustable buckles.
The first shoulder strap 80 is for strapping over a first shoulder a wearer of the harness 10. The first shoulder strap 80 having a first shoulder strap first end 81 extending to a first shoulder strap second end 82. In the embodiment illustrated in the Figures, the first shoulder strap first end 81 connects with the lumbar strap 50 adjacent the lumbar strap first end 51, and the first shoulder strap second end 82 connects with the lumbar strap 50 adjacent the lumbar strap center portion 53. Preferably, the first shoulder strap first end 81 is fixed to the lumbar strap 50, for instance through use of sewing, fasteners, adhesives, or welds. Preferably, the first shoulder strap second end 82 is slidably connected to the lumbar strap 50, allowing the second end 82 to slide side-to-side to allow for a better more custom fit.
The first shoulder strap 80 preferably comprises two segments, namely a first segment 83, and a second segment 84. The first segment 83 extending between the lumbar strap 50 and loop 87. It is preferred that the first segment 83 be fixed to the lumbar strap 50 adjacent the first end 51, for instance through use of sewing, fasteners, adhesives or welds.
The first segment 83 comprising a double row of webbing sewn together from the connection with the lumbar strap 50 until adjacent the chest strap 70. At the chest strap 70 area, the double row of webbing is not sewn together over a 1.50 inch to 2.00 inch section, thereby defining a first shoulder strap slot 85 there-between configured for the chest strap 70 to pass through.
The second segment 84 extending between the lumbar strap 50 and a slide buckle 86. It is preferred that the second segment 84 connect with the lumbar strap 50 adjacent the center portion 53, as described above. Preferably, the second segment 84 extends through the loop 87 to the slide buckle 86, as particularly shown in
Such a configuration allowing the length of the first shoulder strap 80 to be adjusted to better fit the wearer of the harness 10.
It is further preferred that the chest strap 70 laterally connect with the first shoulder strap 80. For instance, as shown particularly in
The second shoulder strap 90 is for strapping over a second shoulder a wearer of the harness 10. The second shoulder strap 90 having a second shoulder strap first end 91 extending to a second shoulder strap second end 92. In the embodiment illustrated in the Figures, the second shoulder strap first end 91 connects with the lumbar strap 50 adjacent the lumbar strap second end 54, and the second shoulder strap second end 92 connects with the lumbar strap 50 adjacent the lumbar strap center portion 53. Preferably, the second shoulder strap first end 91 is fixed to the lumbar strap 50, for instance through use of sewing, fasteners, adhesives, or welds. Preferably, the second shoulder strap second end 92 is slidably connected to the lumbar strap 50, allowing the second end 92 to slide side-to-side to allow for a better more custom fit.
The second shoulder strap 90 preferably comprises two segments, namely a first segment 93, and a second segment 94. The first segment 93 extending between the lumbar strap 50 and loop 97. It is preferred that the first segment 93 be fixed to the lumbar strap 50 adjacent the second end 54, for instance through use of sewing, fasteners, adhesives or welds.
The second segment 93 comprising a double row of webbing sewn together from the connection with the lumbar strap 50 until adjacent the chest strap 70. At the chest strap 70 area, the double row of webbing is not sewn together over a 1.50 inch to 2.00 inch section, thereby defining a second shoulder strap slot 95 there-between configured for the chest strap 70 to pass through.
The second segment 94 extending between the lumbar strap 50 and a slide buckle 96. It is preferred that the second segment 94 connect with the lumbar strap 50 adjacent the center portion 53, as described above. Preferably, the second segment 94 extends through the loop 97 to the slide buckle 96. Such a configuration allowing the length of the first shoulder strap 90 to be adjusted to better fit the wearer of the harness 10. The slide buckle 96 resting against the loop 97 when tension is applied to the harness 10.
It is further preferred that the chest strap 70 laterally connect with the second shoulder strap 90. For instance, as shown in the Figures, the second shoulder strap 90 defining a slot 87 through which the chest strap 70 passes and is free to slide through. It is preferred that the second shoulder strap 90 be sewn above and below the slot 87 to provide a guide path for the chest strap 70. When worn, the chest strap 70 would encircle the wearer's chest, below the shoulders and above the waist.
Referring particularly to
Referring now to
The first leg strap 100 connects to the harness 10 via a connector 104, whereas the second leg strap 110 connects to the harness 10 via a connector 114. Connector 104 and connector 114 comprising loops of webbing able to slide along the lumbar strap 50. The connectors (104, 114) could otherwise attach to the lumbar strap 50, for instance via sewing, adhesives, welding, fasteners, etc.
In the embodiment shown in the Figure, the connector 104 has a d-ring 105 extending there-from and the connector 114 has a d-ring 115 extending there-from.
It is preferred that the first leg strap 100 comprise a first segment 106 and a second segment 107. The first segment 106 fixedly attached to the d-ring 105, for instance by the first end of the first segment 106 looping through the d-ring and being fixed to itself by sewing, adhesives, welding, fasteners or other means. The first segment 106 can also connect with a buckle 102 at a first segment second end. A preferred buckle 102 is a plastic strap adjuster.
The second segment 107 having a first end 101 attached to the d-ring 105, for instance by the first end 101 of the second segment 107 looping through the d-ring and being fixed to itself by sewing, adhesives, welding, fasteners or other means. The second segment 107 extending to a second end 103 that is configured for engaging the buckle 102 to allow the first leg strap to encircle a first leg of a wearer, and allowing the first leg strap to be adjustable.
It is preferred that the second leg strap 110 comprise a first segment 116 and a second segment 117. The first segment 116 fixedly attached to the d-ring 115, for instance by the first end of the first segment 116 looping through the d-ring and being fixed to itself by sewing, adhesives, welding, fasteners or other means. The first segment 116 can connect with a buckle 112 at a first segment second end. A preferred buckle 112 is a plastic strap adjuster.
The second segment 117 having a first end 111 attached to the d-ring 115, for instance by the first end 111 of the second segment 117 looping through the d-ring and being fixed to itself by sewing, adhesives, welding, fasteners or other means. The second segment 117 extending to a second end 113 that is configured for engaging the buckle 112 to allow the second leg strap to encircle a second leg of a wearer, and allowing the second leg strap to be adjustable.
Attachment of the leg straps can also be accomplished by other types of fasteners and attachment means, including, but not limited to snaps and hook-and-loop (e.g., VELCRO®) fasteners. For instance, in one exemplary embodiment, a hook-and-loop attachment is used, consisting of a triple layer of hook-and-loop with a piece from the left, then a piece from the right, then a piece again on top from the left. The leg straps would consist of a d-ring with the triple layer of hook-and-loop along the flat side of the d-ring and adjustable leg straps coming off the curved portion of the d-ring. A fixed portion with one-half of the plastic buckle, preferably the female portion, could be attached to a strap sewn to the d-ring with an extra piece of nylon or polypropylene material that lays under the buckle along the leg for protection/comfort and to keep a wearer from getting pinched when connecting the buckle. Another strap comes from the d-ring next to the previous one and will end in an adjustable plastic buckle, preferably the male portion, and will have a keeper that the adjustable strap feeds through and the strap will be sewn back onto itself to prevent coming out of the keeper.
It is preferred that the plate 20 be made from a stiff material, e.g. polyurethane or other plastics, rubber, metal, ceramic, wood. Loops and d-rings are preferably made from metal, but other materials, including plastics, can be used. Strap adjusters and slide buckles are preferably made from plastic (e.g., nylon), but other materials, including metals, can be used. All side release buckles are preferably made from plastic (e.g., nylon). All straps can be made from nylon webbing, however, other materials may also be used.
A vertical handle configuration allows more major muscle groups of the person holding the handle to be recruited to control the wearer, such as the lattisimus dorsi, trapezious, rhomboids, and the deltoids, as well as the subscapularis, and teres muscles. This is safer for the wearer as the controller of the handle is less likely to drop them or loose control of them. Handles with horizontal handles utilize more forearm and biceps muscle groups as well as some deltoid involvement. A person holding such a handle is more likely to injure themselves in this position due to the over all weakness of the arm compared to the back muscles.
This overall design allows for the person holding the handle to be in active control of the tension created by the lumbar, chest and shoulder straps crossing and thus allows for control of the person in the harness. The combination of the placement of the handle, plate, and the lumbar, chest and shoulder straps allows for active control of the tension on the straps and allows the person holding the handle to more safely and more effectively, support, manipulate, and maneuver the wearer of the harness with out injury to themselves or the wearer.
The position and location of the handle and plate also allows the controller (handle holder) of the harness to be able to be in a full upright position when walking or running along side the wearer of the harness and still be in control as needed. This prevents the bending over needed with many other harness systems and allows for less back pain in the handle holder.
The foregoing detailed description provides exemplary embodiments of the invention and includes the best mode for practicing the invention. The description and illustration of these embodiments is intended only to provide examples of the invention, and not to limit the scope of the invention, or its protection, in any manner.
This application claims the benefit of U.S. Provisional Application No. 61/307,565, filed Feb. 24, 2010, the disclosure of which is incorporated by reference.
Number | Name | Date | Kind |
---|---|---|---|
1193374 | Gilliam | Aug 1916 | A |
1288170 | Pick | Dec 1918 | A |
1697363 | Losey | Jan 1929 | A |
1749999 | Crocker | Mar 1930 | A |
3301594 | Pukish, Jr. | Jan 1967 | A |
4197816 | Lusch | Apr 1980 | A |
4273215 | Leggett | Jun 1981 | A |
4303041 | Thompson et al. | Dec 1981 | A |
4424040 | Buchheister et al. | Jan 1984 | A |
4537154 | Kay | Aug 1985 | A |
4712513 | Huppertsberg | Dec 1987 | A |
4907972 | Marolda | Mar 1990 | A |
4922860 | Hutchings | May 1990 | A |
4981110 | Llewellyn | Jan 1991 | A |
5074795 | Clark | Dec 1991 | A |
5080191 | Sanchez | Jan 1992 | A |
5120287 | Brown et al. | Jun 1992 | A |
5220976 | Gunter | Jun 1993 | A |
5226820 | Pearson | Jul 1993 | A |
5289896 | Giglio | Mar 1994 | A |
5388551 | Martusciello | Feb 1995 | A |
5435272 | Epstein | Jul 1995 | A |
5476070 | Gwon et al. | Dec 1995 | A |
5540188 | Heinrichs | Jul 1996 | A |
5619955 | Nelson | Apr 1997 | A |
5634439 | O'Brien | Jun 1997 | A |
5699555 | Schunter | Dec 1997 | A |
5766114 | Campbell | Jun 1998 | A |
6125792 | Gee | Oct 2000 | A |
6311884 | Johnson | Nov 2001 | B1 |
6325023 | Elnatan | Dec 2001 | B1 |
6338699 | Veitch | Jan 2002 | B1 |
6361478 | Giancaspro | Mar 2002 | B1 |
6397389 | Schultz | Jun 2002 | B1 |
6827672 | Miceli | Dec 2004 | B2 |
6968809 | Reardon | Nov 2005 | B2 |
7225472 | McDonald, Jr. et al. | Jun 2007 | B2 |
7267080 | Gallo et al. | Sep 2007 | B2 |
7341025 | Streeter et al. | Mar 2008 | B1 |
8147252 | Stanford et al. | Apr 2012 | B1 |
20040058598 | Miller | Mar 2004 | A1 |
20060032703 | Burdet | Feb 2006 | A1 |
20080018163 | Winn et al. | Jan 2008 | A1 |
Number | Date | Country | |
---|---|---|---|
20110203531 A1 | Aug 2011 | US |
Number | Date | Country | |
---|---|---|---|
61307565 | Feb 2010 | US |