COLLAPSIBLE SHADE FOR A MAT

Abstract: A shade (10) including a frame member (34) being formed from a flexible twistable material and a membrane (20) is disclosed. The shade (10) includes an adjustable tension strap (40) coupled to two ends of the membrane (20). A screen (510) including a collapsible frame member (530) having an arcuate member (632), and a strut member (634) extending from the arcuate member (632) such that a substantially three-legged structure (630) is formed is also disclosed. A covering (550) extends between opposite sides of the arcuate member (632) and around the strut member (634).

Description: COLLAPSIBLE SHADE FOR A MAT BACKGROUND OF THE INVENTION [1001] The present invention relates generally to shades, and more particularly to collapsible shades. [1002] Shades for use with chairs and mats are typically used, for example, to protect a person from direct sunlight and/or wind and rain. Difficulty exists, however, in transporting, assembling, and disassembling these items when being used for such purposes. Known shades exist having large frames, which are difficult to assemble, as well as shades having frames with numerous components that present assembly difficulties. [1003] Several attempts have been made to remedy some of the problems existing with known shades. For example, some patents disclose inflatable tents or shades that are integral with the bases over which they extend. Such devices, however, are not as versatile as may be desired by consumers. Also, collapsible sun shades and tents exist with complex frame structures that are difficult to collapse or expand. SUMMARY OF THE INVENTION [1004] An apparatus includes a first collapsible frame being formed from a flexible twistable material. A membrane is removably attachable to the first collapsible frame. A second collapsible frame is provided that is engageable with the first collapsible frame and has a covering coupled thereto, the second collapsible frame and the covering together formable as an enclosure above the membrane. [1005] A screen includes a collapsible frame member having an arcuate member, and a strut member extending from the arcuate member such that a substantially three legged structure is formed. A covering extends between opposite sides of the arcuate member around the strut member. [1006] The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute part of this specification, illustrate several embodiments of the invention and together with the description serve to explain the principles of the invention. BRIEF DESCRIPTION OF THE DRAWINGS [1007] Fig. 1 illustrates a top view of a shade according to an embodiment of the invention. [1008] Fig. 2 illustrates a side view of the shade of Fig. 1. [1009] Fig. 3 illustrates a bottom view of the shade of Figs. 1 and 2. [1010] Fig. 4 illustrates a cross-sectional view of the shade of Fig. 2 along the line 4-4. [1011] Fig. 5 illustrates one manner in which the shade of Fig. 1 can be constructed. [1012] Figs. 6-7 illustrate alternative manners in which shade can be constructed according to the present invention. [1013] Fig. 8 illustrates a top view of an alternative embodiment of a shade according to the present invention. [1014] Fig. 9 illustrates a perspective view of the shade of Fig. 1 in a curved configuration. [1015] Fig. 10 illustrates another perspective view of the shade of Fig. 1 in a curved configuration. [1016] Fig. 11 illustrates a shade in combination with a towel. [1017] Figs. 12-15 illustrate a process, according to an embodiment of the present invention, by which the shade can be transformed from an extended configuration to a curved configuration. [1018] Figs. 16-21 illustrate a process, according to an embodiment of the present invention, by which the shade can be transformed from an extended configuration to a collapsed configuration. [1019] Figs. 22-23 illustrate alternative combinations of a shade, according to an embodiment of the invention, and a towel. [1020] Fig. 24 illustrates an alternative embodiment of a shade according to the present invention. [1021] Fig. 25 illustrates an alternative embodiment of a shade according to the present invention. [1022] Fig. 26 illustrates an alternative embodiment of a shade according to the present invention. [1023] Figs. 27-28 illustrate an alternative embodiment of a shade according to the present invention in an extended configuration and a curved configuration, respectively. [1024] Fig. 29 shows a perspective view of the apparatus according to an embodiment of the present invention. [1025] Fig. 30 shows a perspective view of a shade of the apparatus shown in Fig. 29. [1026] Fig. 31 shows a perspective view of the shade of Fig. 30 in a collapsed configuration. [1027] Fig. 32 shows a perspective view of the apparatus according to another embodiment of the present invention. [1028] Fig. 33 shows a perspective view of the apparatus according to a further embodiment of the present invention. [1029] Fig. 34 shows a perspective view of an apparatus shown in Fig. 33 with a shade in the collapsed configuration. [1030] Fig. 35 shows a perspective view of the apparatus according to yet another embodiment of the present invention. [1031] Fig. 36 shows a perspective view of a shade of the apparatus shown in Fig. 35 in a collapsed configuration. [1032] Fig. 37 shows a perspective view of the apparatus according to a further embodiment of the present invention. [1033] Fig. 38 illustrates a perspective view of an apparatus according to another embodiment of the present invention. [1034] Fig. 39 shows a perspective view of the apparatus shown in Fig. 38. [1035] Fig. 40 shows a top view of an apparatus according to another embodiment of the present invention. [1036] Fig. 41 shows a perspective view of the shade shown in Fig. 40 used in combination with a beach towel. [1037] Fig. 42 shows a side view of the shade shown in Fig. 40 in a cylindrical configuration. [1038] Fig. 43 shows a perspective view of an apparatus, according to yet another embodiment of the present invention. [1039] Fig. 44 shows a perspective view of an apparatus according to yet another embodiment of the present invention. [1040] Fig. 45 shows the shade of Fig. 44 in a shade configuration with a towel mat. DETAILED DESCRIPTION [1041] A shade includes a flexible twistable material, a membrane, and a tension member. The flexible twistable material forms a frame member. The membrane has a perimeter portion to which the frame member is fixedly attached. [1042] The term "membrane" is used herein to include, but is not limited to, a layer of material. For example, the member can be a piece of fabric such as nylon or neoprene. The term "perimeter portion" is used herein to include an area substantially about the perimeter of a membrane. The perimeter portion can be, for example, twenty percent of the membrane area nearest to the membrane perimeter. [1043] A shade according to an embodiment of the invention is illustrated in Figs. 1-3. Fig. 1 illustrates a bottom view of the shade 10 while in an extended configuration. The shade 10 includes a membrane 20 and a tension member 40 that is connected to the membrane 20. The membrane 20 has a perimeter edge 22 and two ends 24, 26. The tension member 40 is connected to the ends 24, 26 of the membrane 20. The tension member 40 holds the membrane 20 in a particular configuration. [1044] The membrane 20 includes an outer surface 28 and an inner surface 30 as shown in Fig. 2. A company logo or other indicia can be provided, for example, on the outer and/or inner surfaces. [1045] In conventional devices, a large mat with wire frames is coupled to the ends of an upstanding frame. The wire frames and the amount of material in the mat provide a lot of bulk when the device is folded. Accordingly, the devices cannot be collapsed into a small, compact article. [1046] In the illustrated embodiment, the tension member 40 is an elongated fabric strap. Alternatively, the strap can be a rope, cord, webbing, or any other structure that can provide a tensile force. A tension member according to an embodiment of the invention is elongated and narrow, thereby reducing the amount of material that is folded when the shade 10 is collapsed. A tension member according to an embodiment of the invention does not have a wire frame or other supporting structure. Accordingly, the tension member is flexible and easily collapsible. [1047] The strap 40 includes ends 42, 44 which are coupled to membrane ends 24, 26, respectively. The strap 40 also has coupling mechanisms 50, 52 mounted thereto. Coupling mechanisms 50, 52 can be connected together to change the length of the strap 40, as described in greater detail below. [1048] In the illustrated embodiment, the coupling mechanisms 50, 52 are mating hook and loop fasteners. Alternatively, buckles, clips, hooks, or any other coupling mechanisms can be used to vary the length of the strap. Coupling mechanisms 50, 52 may be fixedly or removably coupled to the strap 40. For example, an adhesive, stitching, or any other method of fixedly coupling two articles together can be used to secure the coupling mechanisms in place along the strap 40. Alternatively, the coupling mechanisms 50, 52 can be located on members that are variably locatable along the strap 40. For example, the mechanisms 50, 52 may be secured to spring clips, the position of which along the strap 40 can be adjusted. [1049] The shade 10 is illustrated in its extended configuration in Figs. 1-3. In this configuration, the shade 10 is substantially planar (an infinite radius of curvature) and the frame member 34 is in an extended configuration as well. [1050] In the illustrated embodiment, the membrane 20 has a substantially oblong shape. The shape of the membrane can be a circle, a rectangle, a square or any other shape that provides protection to the user of the shade. While in one embodiment the material for membrane 20 is nylon or neoprene, any suitable material that provides some shade from a light can be used. [1051] As shown in Figs. 1-2, the ends 42, 44 of the strap 40 include apertures 46, 48, respectively. In an alternative embodiment of the strap 40, the strap 40 can be formed as a solid piece without any apertures. [1052] Fig. 4 illustrates a cross-sectional view of the membrane as shown in Fig. 2 along line 4-4. As shown in Fig. 4, a frame member 34 and a portion of the membrane 20 are placed within a pocket formed by a binder member 36. Fig. 4 illustrates the flexible material of frame member 34 being located along the perimeter of membrane 20. [1053] The frame member can be, for example, a thin section of steel coil. The dimensions of the steel coil can be pre-selected to permit the steel coil to be collapsible as well as self-opening. As a result, the shade 10 is collapsible and self-opening. [1054] Fig. 5 illustrates an exploded view of the end portion of the cross-sectional view illustrated in Fig. 4. One manner in which the membrane of the shade illustrated in Figs. 1-4 can be constructed, according to an embodiment of the present invention, is illustrated in Fig. 5. Membrane 20 can be folded over frame member 34 and sewn along the inner perimeter of the membrane 20. A binder member 36 can be placed around the edge of the membrane 20 and sewn as illustrated in Fig. 5. The binder member 36 can be any type of fabric. [1055] In an alternative manner of construction, illustrated in Fig. 6, the frame member 34 can be placed proximate to an edge of membrane 20. As shown, the frame member 34 is encapsulated by the binder member 36, the ends of which are sewn to the membrane 20. [1056] Fig. 7 illustrates another manner in which the membrane of a shade can be constructed. As illustrated, the binder member 36 is formed using two separate pieces, which are sewn together to encapsulate the end of the membrane 20 with frame member 34. [1057] An alternative embodiment of a shade is illustrated in Fig. 8. The membrane 20 includes a retaining member 32 that is connected, for example, to the inner surface 30 of the membrane 20. The retaining member 32 is positioned proximate to a perimeter edge 22 of the membrane 20. The retaining member can be loop 32 formed with two ends, each of which is connected to the membrane 20. The retaining member 32 is herein referred to as loop 32. While the loop ends can be sewn to the membrane 20, the loop ends may be connected using other methods that securely connect the loop ends to the membrane. [1058] Shade 10 also includes a first extension member 60 that is connected to the membrane 20 proximate to the perimeter edge 22. The extension member or flap 60 can be connected, for example, to an edge of the membrane 20 that is opposite to the connection of loop 32. The first extension member 60 is herein referred to as flap 60. [1059] The flap 60 can include two tapered or curved side edges and two ends 62, 64. End 62 is connected to the membrane 20 using, for example, sewing, knitting, stitching, or any other known method of connecting multiple pieces of material. [1060] The other end 64 of the flap 60 includes a second extension member 68 connected thereto. In the illustrated embodiment, the second extension member 68 is a strand. The strand 68 is threaded through an eyelet 66 formed in the flap 60. The second extension member 68 is herein referred to as strand 68. One end of a strand 68 is coupled to the flap 60 in a conventional manner. [1061] A retention or anchor member 70 is connected to the other end of the strand 68. In the illustrated embodiment, the retention or anchor member 70 is a bar. The retention member 70 is herein referred to as bar 70. [1062] The flap 60 also includes retaining members 72, 74 connected on a surface thereof. Retaining members 72, 74 are sized to retain the bar 70 in position. In the illustrated embodiment, the retaining members 72, 74 are formed as loops. The retaining members 72, 74 are herein referred to as loops 72, 74. While loops 72, 74 can be elastic members, they can also be non-elastic members. [1063] To position the flap 60 in its stored position as illustrated in Fig. 8, the bar 70 is fed and pulled through loop 32 so that the strand 68 and flap end 64 pass under the loop 32. The flap end 64 is then folded over loop 32. The bar 70 is then inserted into loops 72, 74, and the flap 60 is secured in its stored position. In the illustrated embodiment, the shape of bar 70 resembles the overall shape of the membrane 20. Alternatively, the bar 70 may be any shape or configuration. [1064] Figs. 9-10 illustrate different views of a shade in its curved configuration. To change the configuration of the shade 10 from its extended configuration to its curved configuration, the coupling mechanisms 50, 52 are coupled together to change the length of strap 40. [1065] As the strap 40 is manipulated to couple the coupling mechanisms 50, 52 together, the membrane ends 24, 26 are moved closer together and the membrane 20 is moved into a curved configuration as illustrated in Figs. 9-10. Once the coupling mechanisms 50, 52 are connected, the length of the strap 40 between them becomes excess material and forms loop 54 as shown. [1066] When the shade 10 is in its extended configuration, the coupling mechanisms 50, 52 are spaced apart along the length of the strap 40. In an alternative embodiment, the distance between the coupling mechanisms can be varied depending on the desired curvature of the shade. For example, if the coupling mechanisms 50, 52 are mounted on variably locatable members, the distance between the coupling mechanisms 50, 52 can be changed, thereby enabling the shade 10 to have a range of curved configurations. As the distance between the coupling mechanisms 50, 52 is decreased, the radius of curvature of the shade 10 in its curved configuration increases. Similarly, as the distance increases, the radius of curvature of the shade 10 in its curved configuration decreases. [1067] A use of the shade 10 is illustrated in Fig. 11. The shade 10 is illustrated in its curved configuration. The flap 60 is maintained in its stored position on the shade 10. In the curved configuration, the shade 10 is free-standing. [1068] In the illustrated arrangement, the strap 40 is positioned beneath a towel 100. The illustrated towel 100 includes a perimeter edge 102, a head portion 104, and a body portion 106. Any type or shape of towel or article on which a person may lie can be used with the shade. An example of a towel that may be utilized with the present invention is disclosed in U.S. Patent Application Serial No. 09/229,968, entitled "Towel-Mat With a Frame Member and Removably Attached Membranes", filed January 14, 1999, and which is incorporated by reference herein. [1069] A method of using a shade is illustrated in Figs. 12-15. As shown in Fig. 12, the shade 10 is initially positioned in a generally opened or planar configuration. The user identifies the coupling mechanisms 50, 52 and pulls them together as shown in Fig. 13. As a result, the ends 24, 26 of the membrane 20 are moved closer together and the membrane 20 takes on a curved configuration. At this point, the membrane 20 resembles a U-shaped article. The user couples the coupling mechanisms 50, 52 and turns the shade 10 over. [1070] Next, the user lifts an end of a towel 100 and slides the strap 40 of the shade 10 beneath the towel 100 as shown in Fig. 14. The distance that the strap 40 is slid under the towel 100 depends on the user's preference as well as the distance between the ends 24, 26 of the membrane 20. [1071] For example, the strap 40 may be slid a small distance under the towel 100. If the distance between the ends 24, 26 is greater than the width of the towel 100 at the location of the strap 40, a space may exist between the membrane 10 and the towel 100 on one or both sides of the towel 100. Alternatively, the strap 40 may be slid under the towel 100 as far as it can go, at which point the distance between the membrane ends 24, 26 is substantially the same as the width of the towel 100. [1072] When the towel 100 is positioned on the strap 40, the weight of the towel biases the shade 10 into a substantially vertical position. Because the towel 100 holds the strap 40 in a generally flat or horizontal position, the membrane 20 of the shade 10 is also biased into a generally vertical position. In this arrangement, the membrane 20 is generally oriented substantially perpendicular to the support surface on which the shade 10 is placed. [1073] Next, the shade 10 can be tilted to a desired angle as shown in Fig. 15. Many times, the sun is not directly above a person laying in it. Usually the sun is at an angle which continuously changes. Accordingly, the user of the shade 10 may want to mount - l i ¬ the shade 10 at an angle to provide the desired amount of protection and shade from the sunlight. [1074] The user removes the flap 60 from the loop 32 on the membrane 20 and pulls the flap 60 rearwardly of the shade 10 as illustrated in Fig. 15. The pulling of the flap 60 and the bar 70 rearwardly counters the effect of the towel 100 on the tension strap 40. In other words, the flap 60 and bar 70 are pulled with a sufficient force to overcome the tendency of the shade 10 to remain in a vertical position due to the weight of the towel on the strap 40. [1075] In one arrangement, the bar 70 can be forced into the sand by the user. The user can drive bar 70 into the sand as far as necessary to secure the bar 70 in place. In this arrangement, no stake is used to anchor the shade 10 in position. When the flap 60 is extended, no slack should exist on the radiused edges of the flap 60. [1076] In an alternative arrangement, the user can use a stake (not shown) to anchor bar 70 relative to the ground or sand. Once a stake is driven into the ground or sand, the bar 70 is pulled beyond the stake to engage strand 68 with a hook or other mechanism on the stake. Because the bar 70 is wider than the strand 68, the bar 70 engages the stake and limits the movement of the strand 68 relative to the stake. [1077] The angle at which the shade 10 is oriented with respect to a support surface is related to the distance from the strap 40 at which the bar 70 is secured to the ground. For example, as the distance between the strap 40 and the bar 70 increases, the angle at which the shade 10 is tilted relative to a free-standing configuration as shown, for example, in Fig. 11, increases. Similarly, as the distance between the strap 40 and the bar 70 decreases, the angle at which the shade 10 is tilted decreases. [1078] In its curved configuration, the membrane 20 has a non-twisted, natural orientation. When the flap 60 is pulled rearwardly of the membrane 20, the orientation of the membrane 20 changes. The orientation of the membrane 20 changes from a non- twisted orientation to a rotated orientation, which is offset from the non-twisted orientation. The extent of the rotated orientation is determined by the distance that the flap 60 is pulled. A slight torque or twisting of the membrane 20 occurs as the flap 60 is pulled rearwardly. [1079] The extent to which the inner surface 28 of the membrane 20 engages the perimeter edge 102 of the towel 100 relates to the angle at which the shade 10 is tilted and the shape of the towel 100. For example, if the shade 10 is in a vertical position and the towel is substantially oval, the shade 10 may contact the towel 100 along a narrow range on each side of the towel 100. As the flap 60 on the shade 10 is pulled rearwardly, however, the inner surfaces 28 of the membrane 20 becomes increasingly similar to the curvature of the towel 100. [1080] Figs. 16-21 illustrate a process, in ascending order, according to an embodiment of the present invention, by which a self-opening shade can be transformed from an extended configuration to a collapsed configuration. Of course, the process can be reversed to illustrate the process of transforming self-opening shade 10 from a collapsed configuration to an extended configuration by following Figs. 16-21 in descending order. [1081] As shown in Fig. 16, where the longer side of the shade 10 lies across from 3 o'clock to 9 o'clock, a person can hold the edge of the shade 10 at approximately 2 o'clock and 10 o'clock. As shown in Fig. 17, the ends of the shade 10 along the longer side can then be folded towards the center, away from the person. As shown in Fig. 18, one end of the shade 10 can be further brought towards the center. As shown in Fig. 19, the remaining end of shade 10 can then be folded over so that shade 10 is folded into a substantially circular shape approximately one-third the area of the shade 10 when in an extended configuration as illustrated in Fig. 16. [1082] A self-opening shade 10 in a collapsed configuration is approximately or substantially planar in shape although it does have a thickness approximately greater than the thickness of the shade as illustrated in an extended configuration. The term "substantially planar" merely indicates that the shade is approximately flat although not exactly lying within a plane in a purely geometric sense. When the shade 10 is in a collapsed configuration, the frame member 34 is in a collapsed configuration as well. [1083] As shown in Figs. 20-21, the flap 60 can be wrapped around the collapsed shade 10 and the bar 70 can be placed in loops 72, 74 to secure the shade 10 in its collapsed configuration. [1084] In an alternative embodiment, the shade 10 can be placed into a carrying case (not shown) for storage and/or transport. The carrying case can include a strap and a zipper that can provide an opening to the interior portion of the case. The carrying case can be made of, for example, the same materials as the shade 10. [1085] An alternative use of the shade of the present invention is illustrated in Fig. 22. In the illustrated arrangement, the shade 10 is positioned in its extended configuration and laid on a supporting surface, such as ground, sand, etc. The shade 10 is slid beneath a towel 100 so that its outer surface 28 provides additional surface area for supporting articles. The. shade 10 can be positioned, for example, at the head end of the towel, the foot end of the towel, or any location therebetween. [1086] Another use of the shade is illustrated in Fig. 23. In this arrangement, the shade 10 is positioned proximate to, but distanced from, the towel 100. In its extended configuration, shade 10 provides additional surface area to support articles and maintain them free of sand, dirt, etc. In one embodiment, towel 100 can include a frame member mounted in a membrane. In an alternative embodiment, the towel 100 can be a conventional towel without any frame member. [1087] An alternative embodiment of a shade is illustrated in Fig. 24. In this embodiment, the shade 10 includes a holder 90 for holding articles such as a drink, cup, sunglasses, etc. [1088] In one embodiment, holder 90 is a piece of mesh material that is coupled on three sides to the inner surface 30 of the shade 90. The holder 90 is sewn to the membrane 20 and the open end 92 of the holder 90 is open to enable articles to be inserted therein. The open end 92 of the holder 90 may include an elastic material that secures the articles in the holder 90. While the holder can be sewn on the membrane, the holder can be coupled to the membrane using any other conventional method. [1089] In an alternative embodiment, the holder 90 may be an insulating material that insulates a drink or other temperature sensitive article from the environmental elements. Alternatively, the shade 10 may also include multiple holders 90. Moreover, each holder 90 can be coupled to the shade 10 at any location, including the inner surface 30, the outer surface 28, and the strap 40. [1090] An alternative embodiment of a shade is illustrated in Fig. 25. Shade 200 includes a tension member 210. In the illustrated embodiment, the tension member 210 does not have any coupling mechanisms. Since the length of the tension member 210 does not change, the shade 200 is continuously maintained in a curved configuration as illustrated. The curvature of the shade 200 is determined by the length of the tension member 210. In this embodiment, the substantially planar configuration is not necessary as the shade 10 is in either the curved configuration or the collapsed configuration. The shade 10 can be collapsed from the extended configuration by skipping the initial bending illustrated in Fig. 16. [1091] Another embodiment of a shade is illustrated in Fig. 26. Shade 300 includes additional extension members 310, 312 and retention or anchor members 314, 316. Extension members 310, 312 are coupled to strap 40. The retention members or bars 314, 316 may be utilized as anchors similar to bar 70 as described above. [1092] Because this arrangement does not utilize a towel or other article to provide weight on the strap 40, bars 314, 316 are pulled forward of the shade 10 and anchored in the sand as illustrated in Fig. 26. The anchoring effect of bars 314, 316 counteracts the effect of bar 70, which pulls the shade 10 in a rearward direction. [1093] A head element 320 may be used with the shade 300. In one embodiment, the head element 320 is tethered to the strap 40. Alternatively, the head element 320 is releasably coupled to the strap 40 using mating hook and loop fasteners or snaps. In yet another embodiment, the head element 320 is loosely placed on the strap 40. [1094] The head element 320 may be any shape and size. Also, the head element 320 may be formed from any material, such as foam, stuffing, etc. or may include an inflatable member. [1095] Another embodiment of a shade is illustrated in Figs. 27-28. Shade 400 is illustrated in an extended configuration in Fig. 27 and in a curved configuration in Fig. 28. [1096] Shade 400 includes two straps 410, 420. An end 414 of the strap 410 is connected to the membrane 20. The other end 412 of the strap 410 has a coupling mechanism 50 coupled thereto. Similarly, end 424 of strap 420 is connected to the membrane 20. The other end 422 of the strap 420 has a coupling mechanism 52 coupled thereto. i [1097] As the strands 410, 420 are pulled together, the ends 24, 26 of the membrane 20 are moved closer to each other. The coupling mechanisms 50, 52 can be coupled together to hold the membrane 20 and frame member 34 in a curved configuration. [1098] Many possible variations on the particular embodiments described above that would be consistent with the principles of the invention. Several additional variations are described below. [1099] The strap can include more than two coupling mechanisms. For example, two pairs of coupling mechanisms can be provided on the strap to provide a user with an option between two different curved configurations of the shade. [1100] While the flap described above includes a strand and a bar coupled thereto, the anchoring of the flap can be accomplished using a variety of other mechanisms. For example, the strand may include a loop at its free end through which a stake can be driven. Alternatively, a stake may be driven through the eyelet of the flap, thereby eliminating the need for the strand and/or bar. [1101] In another embodiment, the shade may include a plurality of parallel straps that are mounted to the ends of the membrane. The straps may include coupling mechanisms that enable different amounts of adjustment between the straps. As a result, the straps may have different lengths, thereby imparting an inherent twist to the shade. [1102] In the embodiments described above, the straps function as tension members between two ends of the membrane. Anything that performs the function of tensioning two ends of the membrane is acceptable, as long as the strap and/or tension member can collapse down. [1103] In the embodiments described above, the adjustable strap includes coupling mechanisms that are connected together to adjust the distance between the ends of the strap. The adjustable strap can include any type of adjusting mechanism or mechanisms to vary the length of the strap. For example, a buckle arrangement similar to a vehicle seat belt may be used. [1104] Reference will now be made in detail to further embodiments of the invention, examples of which are illustrated in the accompanying drawings. Referring to Figs. 29- 31, a screen or shade 510 is removably attachable to a ground cover 520 such as a towel or a mat and includes a collapsible frame 530 having pivotable connectors 532 coupleable with the ground cover 520. The collapsible frame 530 has a first frame member 534 having a substantially arcuate shape, and a second frame member 536 that is pivotally coupled with the first frame member 534 at a pair of pivot points 540. The pivot points 540 are separate from the pivotable connectors 532. A covering 550 surrounds a portion of the collapsible frame 530 such that the collapsible frame 530 and covering 550 together are formable as an enclosure. Covering 550 can be substantially opaque, but can include a portion of covering 550 that is vented to allow air to pass through. Such a configuration, for example, prevents the shade 510 from being carried away by a strong wind. The material comprising the covering 550 may include, for example, mesh, vinyl, cloth, or the like. The covering 550 may also be dimensioned such that it is slidably engageable with the first collapsible frame 590 to secure the second collapsible frame 530 thereto. [1105] As illustrated in Figs. 30 and 31, the first frame member 534 and the second frame member 536 are arrangeable in at least one of a collapsed configuration (Fig. 31) and an expanded configuration (Fig. 30) (and intermediate configurations between the collapsed and expanded configurations). In the collapsed configuration, the first frame member 534 and the second frame member 536 are substantially coplanar. In the expanded configuration, the first frame member 534, and the second frame member 536 are offset from each other. In the collapsed configuration, the second frame member 536 is elongated such that it is essentially concentric with the first frame member 534. In the expanded configuration, the second frame member 536 becomes substantially circular in configuration. The shape of the second frame member 536 is primarily defined by the covering 550 that surrounds the collapsible frame 530. The covering 550 can be securely fit around the collapsible frame 530 such that a taut configuration is provided to maintain the shape of the structure. [1106] It can be desirable to provide a pillow 517, or similar cushion to be used with the shade 510 of the present invention. The pillow 517 can be removably attached to the shade 510 via a tether (not shown) or other such construction. For example, where the shade 510 is attached to a mat 520, the pillow 517 can be coupled to the mat 520 and/or the shade 510. The pillow 517 may also serve as the sole attachment point for the shade 510 to the mat 520. For example, the pillow 517 may be tethered to the shade 510 and also removably coupled to the mat 520 by, for example, a hook and pile attachment. [1107] A first collapsible frame 590 can be formed from a flexible twistable material. Examples of such frames are disclosed in U.S. Applications Serial Nos. 09/081,134, now U.S. Patent No. 6,170,100; 09/229,968; and 09/390,317, all of which are incorporated herein by reference. The first collapsible frame 590 can have a plurality of attachment points 570 to which a second collapsible frame 530 may attach. A membrane 592 can be removably attachable to the first collapsible frame 590. [1108] The second collapsible frame 530 can have connectors 532 that are removably attachable to the plurality of attachment points 570. A covering 550 can be coupled with the second collapsible frame 530, such that the second collapsible frame 530 and the covering 550 together are formable as an enclosure above the membrane 592. [1109] The second collapsible frame 530 that can be coupled to the first collapsible frame 590 has a first frame member 534 having a substantially arcuate shape, and a second frame member 536 that is pivotally coupled with the first frame member 534 at a pair of pivot points 540. The pivot points 540 are separate from the pivotable connectors 532. [1110] Referring to Figs. 33-34, in another embodiment of the present invention, the second collapsible frame 530 comprises at least one support element 538 coupled to opposite sides of the first collapsible frame 590, such that the second collapsible frame 530 is arrangeable in one of a collapsed configuration (Fig. 34) and an expanded configuration (Fig. 33). In the collapsed configuration, the support element 538 substantially engages, or is coplanar with, the membrane 592 that surrounds the first collapsible frame 590. In the expanded configuration, the support element 538 is substantially displaced from the membrane 592. [1111] To maintain the support element 538 in the expanded configuration, a retainer 560 can be coupled to the support element 538. For example, in one embodiment of the present invention, the retainer 560 may include a detent mechanism (not shown) in pivotable connectors 532. Such a mechanism can allow the support element 538 to be maintained at various heights above the ground or ground cover, thus varying the amount of shade provided by the apparatus 510. [1112] In another embodiment of the invention (see e.g., Fig. 32), the retainer 560 may be straps, or elastic bands or hinges coupled between the support element 538 and the first collapsible frame 590. The straps or elastic bands 560 could either be permanently attached to the membrane 592 or first collapsible frame 590 or, alternatively, removably coupled thereto. The straps 560 could be adjustable by virtue of their physical characteristics (e.g., elastic) or by virtue of their attachment point along the first collapsible frame 590. [1113] In yet another embodiment of the invention (see, e.g., Fig. 33), the retainer 560 may include an inflatable member coupled between the support element 538 and the first collapsible frame 590. When the inflatable member 560 is inflated, it displaces the support element 538, thereby expanding the covering 550 and creating an enclosed space above the membrane 592. More than one inflatable member acting as a retainer 560 is possible. Moreover, the entire covering may be inflatable, thereby serving a dual purpose as a retainer 560 and a covering 550. , [1114] It also can be desirable to have a fastener 588 coupled to the support element 538 and the first collapsible frame 590 so the support element 538 is securely fastened to the first collapsible frame 590 when in the collapsed configuration. The fastener 588 may include such devices such as VELCRO®, buttons, snaps, zippers, hooks, temporary adhesive, and the like. [1115] It is also possible for the pivotable connectors 532 on the support element 538 to be provided with ground anchors (not shown) so that the second collapsible frame 530 may be freestanding without being coupled to the first collapsible frame 590. In such a configuration, a ground anchor (not shown) may also be coupled to the covering 550 to ensure that the covering is securely fastened to the ground. Retainers 560 may also be coupled to the support element 538 to provide a more rigid attachment to the ground. [1116] Referring, for example, to Fig. 35, a further embodiment of the invention is illustrated in which a first collapsible frame 590 can be formed from a flexible twistable material. A membrane 590, or covering, can be removably attachable to first collapsible frame 590. A second collapsible frame 530 can be engageable with the first collapsible frame 590. While the second collapsible frame 530 can be slidably engageable with the first collapsible frame 590, the second collapsible frame 530 can be coupled to the first collapsible frame 590 in other fashions. For example, the first collapsible frame 590 and second collapsible frame 530 could be provided with mating fasteners (not shown) to couple the two frames 590, 530 together. A covering 550 can be coupled to the second collapsible frame 530. The covering 550 and the second collapsible frame 530 together can be formable as an enclosure above the membrane 592. [1117] It can be desirable for the second collapsible frame 530 to be formed from an inflatable construction such that the second collapsible frame 530 is arrangeable in at least one of either a collapsed configuration and an expanded configuration. When the inflatable construction 530 is in the collapsed configuration (see, e.g., Fig. 36) it can be substantially deflated and substantially flat. In such a configuration, the second collapsible frame 530 can be easily foldable and easily stored. When the inflatable construction 530 is in the expanded configuration, it is substantially inflated and it extends above the membrane 592 covering the first collapsible frame 590 (see, e.g., Fig. 35). [1118] In a configuration where the second collapsible frame 530 slidably engages the first collapsible frame 590, it can be desirable to have a retention member 600 coupled to the second collapsible frame 530. The retention member 600 may be dimensioned such that it slidably engages the first collapsible frame 590. The retention member 600 may include, for example, a strap extending between opposite ends of the second collapsible frame 530. The strap may be elastic or may otherwise be adjustable to accommodate mats 520, 590 of various dimension while providing, for example, a snug friction fit between the two collapsible frames 590, 530. [1119] Referring to Figs. 36 and 37, the second collapsible frame 530 may be configured to be free standing from the first collapsible frame 590. In such a configuration, the apparatus 510, or shade, includes a collapsible frame member 630 having an arcuate member 632, and a strut member 634 extending from the arcuate member 632 such that a substantially three-legged structure is formed 630. The non- joined ends of the three-legged structure 630 can terminate substantially in a plane such that the collapsible frame member 630 is configured to rest upon a surface and thereby form a substantially half parabaloid-like structure. A covering 550 extends between opposite sides of the arcuate member 632 around the strut member 634. The shape of the strut member 634 dictates the shape the covering 550 will take around the collapsible frame 630. The opposing legs of the arcuate member 632 define an opening. [1120] It can be desirable to have a retention member 600 coupled to the arcuate member 632 and the strut member 634 opposite the covering 550 such that the collapsible frame member 630 may be removably coupled to mats or towels or the like. The retention member 600, as described above, may include elastic, or some other sort of adjustable strap so that the retention member 600 is expandable or contractible to fit mats and towels of various dimensions. The collapsible frame member 630 can be coupled at opposite sides of a first end 602 of the retention member 600. Also, the collapsible frame member 630 can be further coupled at a second end 604 of the retention member 600. [1121] The collapsible frame member 630 can be inflatable such that it is arranged in either at least one of a collapsed configuration and an expandable configuration. In the collapsed configuration, the collapsible frame member 630 is substantially deflated and can be substantially flat. In such a configuration, the collapsible frame member 630 is easily folded into a small dimension and stored. In the expanded configuration, the collapsible frame member 630 defines a substantially three-legged structure that extends above a surface such as the ground, a towel, or a mat. [1122] Referring to Figs. 36 and 37, the apparatus 510 can include a first leg 635, a second leg 637, and a third leg 639. The first leg 635, second leg 637, and third leg 639 each have an end 650 adjacent to one another and a covering 550 can extend between at least two adjacent legs such that at least one opening is defined between two adjacent legs. Each of the legs 635, 637, 639 has a first end 650 and a second end 652, with each of the legs 635, 637, 639 being coupled to the others at the first end 650. The legs 635, 637, 639 may either be integrally formed or removably coupled. A retention member 600 can be coupled to the second end 652 of each of the legs 635, 637, 639. The retention member 600 may be, for example, a set of straps or a continuous sheet extending between the legs 635, 637, 639. The retention member 600 may also be integrally formed with the covering 550. [1123] It can be desirable for the collapsible frame 630 to be inflatable as described above such that it is arranged in either at least one of a collapsed configuration and an expandable configuration. In the collapsed configuration, the collapsible frame member 630 is substantially deflated and can be substantially flat. In such a configuration, the collapsible frame member 630 can be easily folded into a small dimension and stored. In the expanded configuration, the collapsible frame member can define a substantially three- legged structure that extends above a surface such as the ground, a towel, or a mat. [1124] Alternatively, one or more of the legs 635, 637, 639 can be filled with ballast such as sand or water to maintain the frame member 530 in position. The legs 635, 637, 639 for example, can be substantially hollow to accommodate ballast therein and may be either partially or completely fillable with ballast. Moreover, separate ballast tanks (not shown) can be coupled to the collapsible frame member 630 to maintain it in place. [1125] Fig. 38 illustrates a perspective view of an apparatus according to another embodiment of the present invention. FIG. 39 shows a perspective view of the apparatus shown in FIG. 38 in a collapsed configuration. Shade 700 shown in Fig. 38 includes a strap 710 shown in FIG. 39. Strap 710 includes a tab 711 that is disposed through a slot 601 in retention member 600. By pulling the tab 711 through slot 601, strap 710 is pulled through slot 601 thereby automatically deflating the inflatable members 735, 737 and 739 and thereby collapsing shade 700. [1126] Fig. 40 shows a top view of an apparatus according to another embodiment of the present invention. Shade 800 includes straps 810, top portion 820, central portion 830 and extended portions 840 and 850. The shade 800 can be made for example, of a corrugated plastic and can be scored where the central portion 830 meets the top portion 820 and meets the extended portions 840 and 850. Consequently, the top portion 820 can be folded towards the central portion 830 at the scoring, and the extending portions 840 and 850 can be folded towards the central portion 830 at the respectively scoring. Thus, shade 800 can be converted from a planar configuration into an upright configuration. [1127] When shade 800 is in an upright configuration, shade 800 can be used in conjunction with, for example, a blanket or mat. More specifically, top portion 820 can be folded over and onto central portion 830 and extended portions 840 and 850 can be folded towards central portion 830 thereby forming a canopy-like structure. In other words, the central portion 830 and the folded over top portion 820 can be elevated by the extended portions 840 and 850. The straps 810 can be connected to maintain the canopy-like structure of shade 800. [1128] Fig. 41 shows a perspective view of the shade used in combination with a mat (e.g., a beach towel). More specifically, shade 800 is shown in use with a mat 592 where the straps are attached together and the mat 592 disposed on top of the connected straps 810 and below the shade central portion 830 the folded over top portion 820. [1129] Fig. 42 shows a side view of the shade shown in Fig. 40 in a cylindrical configuration. More specifically, shade 800 can be rolled into a cylinder like shape and then held together by the straps 810, which can also be used as a handle while in the cylindrical configuration. Again, because shade 800 is corrugated, it is possible that the shade 800 can be rolled up into a cylindrical configuration shown, for example, in Fig. 42. [1130] Fig. 43 shows a perspective view of an apparatus, according to yet another embodiment of the present invention. Shade 900 includes carrying case 910, strap 920 and collapsible pole 930. Towel 592 can be stored, for example, in a storage apparatus 910 and contained within case 910, for example, by a zipper on a perimeter portion of carrying case 910. The pole 930 can be collapsible, for example, having hollowed tubelike portions connected by an elastic center band. Such a pole 930 can then be collapsed to a small configuration and contained within the carrying bag 910, or pole 930 can be extended and then prop up carrying bag 910 to thereby provide shade from the sun for mat 592. [1131] Fig. 44 shows a perspective view of an apparatus according to yet another embodiment of the present invention. Sunshade 1000 includes an end portion 1010, center portion 1020 and end portion 1030. End portion 1010 can include an attachment device so that it attaches to one end of center portion 1020. Similarly, end portion 1030 can include an attachment device so that it attaches to the other end of center portion 1020. The attachment device can be, for example, a zipper set or VELCRO® attachment where the end portions 1010 and 1030 can be removably attached to the respective ends of center portion 1020. [1132] Center portion 1020 can be easily laterally collapsed (i.e., collapsed towards attached end portions 1010 and 1030) to a substantially planar shape so that the entire structure (i.e., center portion 1020 and attached end portions 1010 and 1030) are in a substantially planar shape for easy transport. In fact, in such a configuration a towel mat, such as towel mat 592 described above, can be inserted into center portion 1020 and contained within the substantially planar configuration of center portion 1020 and attached end portions 1010 and 1030. End portions 1010 and 1030 can have a relatively rigid shape so that they can be placed for example, on a sandy beach. End portions 1010 and 1030 can each include, for example, a rigid frame member fixedly attached to the perimeter of end portions 1010, 1030. [1133] Fig. 45 shows the shade of Fig. 44 in a shade configuration with a towel mat. As Fig. 45 shows, center portions 1020 can be removably attached along a portion of end portions 1010 and 1030. The portion of center portion 1020 which is not attached to end portions 1010 and 1030 can be rolled into a relatively compact cylindrical space such that the portion of central portion 1020 which is attached to end portions 1010 and 1030 acts as a shade. The portion of central portion 1020 not attached to end portions 1010 and 1030 allows an opening for a person to lay on mat 592 inside the volume created by sunshade 1000. Note that end portions 1010 and 1030 can be located in a stable manner with respect to mat 592 by placing a portion of the end portions 1010 and 1030 into the ground, for example, on a sandy beach. Such inserted portions of end portions 1010 and 1030 are shown in Fig. 45 for illustration purposes with the dotted outline. [1134] It will be apparent to those skilled in the art that various modifications and variations can be made in the shape of the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. For example, any of the shades of the present invention can be used as free standing shades or together with a towel as described above.

Claims: What is claimed is: 1. A sunshade, comprising: a membrane having a first end, a second end, and a perimeter; a frame member being formed from a flexible twistable material, said frame member coupled to said membrane along said membrane perimeter, said frame member having a first shape being substantially curved when said frame member is in a curved configuration and a second shape being substantially planar and having an area less than an area of said first shape when said frame member is in a collapsed configuration; and a strap coupled proximate to said first end and said second end of said membrane to hold said frame member in a curved configuration . 2. The sunshade of claim 1, wherein said strap has first and second coupling mechanisms coupled thereto, wherein said first and second coupling mechanisms are coupled together when said frame member is in a curved configuration and separate from each other when said frame member is in a collapsed configuration 3. The sunshade of claim 1, wherein said frame member has a third shape being substantially planar when said frame member is in an extended configuration. 4. The sunshade of claim 1, further comprising: an extension member coupled to said membrane, said extension member including an anchor member, the anchor member being configured to anchor said extension member relative to said membrane. 5. The sunshade of claim 1, further comprising: a first extension member coupled to said membrane, said first extension member including a first anchor member, said first anchor member being configured to anchor said first extension member relative to said membrane; a second extension member coupled to said strap; and a second anchor member coupled to said second extension member, wherein said second extension member and said second anchor member are anchorable in a different direction relative to said membrane than said first anchor member. 6. The combination of the sunshade of claim 1 and a pillow removably attachable to said sunshade, said sunshade including an extension member coupled to said strap, and an anchor member coupled to said extension. 7. The sunshade of claim 1, further comprising: a pocket coupled to said membrane, said pocket being coupled to an inner surface of said membrane. 8. The sunshade of claim 4, wherein said membrane includes a retaining member coupled to said membrane, and said extension member passes through said retaining member when said extension member is positioned in a stored configuration. 9. A method of installing a sunshade relative to an article, the method comprising: opening a sunshade into an extended configuration, said sunshade including a membrane, a frame member coupled to said membrane, and a tension member coupled to said membrane, said tension member including first and second coupling mechanisms coupled thereto; coupling said first coupling mechanism and said second coupling mechanism together, said coupling of said first and second coupling mechanisms disposing said tension member in a state in which it has a length sufficiently short to urge said sunshade into a curved configuration; and positioning said strap beneath a portion of the article. 10. The method of claim 9, further comprising: anchoring said sunshade relative to a support surface on which said sunshade is placed. 11. The method of claim 21, wherein said anchoring said sunshade includes extending an extension member coupled to said membrane rearwardly of said sunshade and anchoring said extension member relative to said sunshade to vary the angle between said sunshade and the support surface. 12. The method of claim 10, wherein said membrane is oriented in a non-twisted orientation when said strap is positioned beneath a portion of the article, and said membrane is oriented in a rotated orientation when said sunshade is anchored relative to a support surface. 13. A screen removably attachable to a ground cover, comprising: a collapsible frame having pivotable connectors coupleable with a ground cover; said collapsible frame having a first frame member having a substantially arcuate shape; and a second frame member pivotally coupled with said first frame member at a pair of pivot points separate from said pivotable connectors; a covering surrounding a portion of said collapsible frame, said collapsible frame and said covering together formable as an enclosure. 14. The screen of claim 13, wherein said first frame member and said second frame member are arrangeable in one of a collapsed configuration and an expanded configuration, wherein in the collapsed configuration, said first frame member and said second frame member are substantially coplanar; and in the expanded configuration, said frame member, and said second frame member are offset from each other. 15. An apparatus, comprising: a first collapsible frame being formed from a flexible twistable material; a membrane being removably attachable to said first collapsible frame; a second collapsible frame engageable with said first collapsible frame; and a covering coupled with said second collapsible frame, said second collapsible frame and said covering together formable as an enclosure above said membrane. 16. The apparatus of claim 15, wherein said second collapsible frame comprises an inflatable construction such that said second collapsible frame is arrangeable in one of a collapsed configuration and an expanded configuration, wherein in the collapsed configuration, said inflatable configuration extends above said membrane. 17. The apparatus of claim 16, further comprising a retention assembly coupled to said second collapsible frame. 18. The apparatus of claim 17, wherein said retention assembly slidably engages said first collapsible frame. 19. The apparatus of claim 15 wherein said first collapsible frame has a plurality of attachment points. 20. The apparatus of claim 19, wherein said second collapsible frame includes: connections being removably attachable to the plurality of attachment points; a first frame member having a substantially arcuate shape; a second frame member pivotally coupled with said first frame member at a pair of pivot points such that said second frame member is arrangeable in one of a collapsed configuration and an expanded configuration, wherein in the collapsed configuration, said first frame member and said second frame member are substantially coplanar; and in the expanded configuration, said first frame member, and said second frame member are offset from each other. 21. The apparatus of claim 19, wherein said second collapsible frame comprises at least one support element coupled to opposite sides of said first collapsible frame, such that said second collapsible frame is arrangeable in one of a collapsed configuration and an expanded configuration, wherein in the collapsed configuration, said support element substantially engages said membrane; and in the expanded configuration, said support element is substantially displaced from said membrane. 22. The apparatus of claim 21 , further comprising: a retainer coupled to said support element. 23. The apparatus of claim 22, wherein said retainer comprises a detent mechansim in said connectors. 24. The apparatus of claim 22, wherein said retainer comprises an elastic hinge coupled between said support element and said first collapsible frame. 25. The apparatus of claim 21, further comprising: a fastener for coupling said support element to said first collapsible frame when in said collapsed configuration. 26. An apparatus, comprising: a collapsible frame member having an arcuate member; and a strut member extending from said arcuate member such that a substantially three-legged structure is formed; and a covering extending between opposite sides of said arcuate member around said strut member. 27. The apparatus of claim 26, further comprising: a retention member coupled to said arcuate member and said strut member opposite said covering. 28. The apparatus of claim 26, wherein said collapsible frame member is arrangeable in one of a collapsed configuration and an expanded configuration, wherein in the collapsed configuration, said collapsible frame member is substantially flat; and in the expanded configuration, said collapsible frame member defines a substantially three-legged structure. 29. An apparatus comprising: a collapsible frame having a first leg; a second leg; and a third leg; said first leg, said second leg and said third leg each having an end adjacent to one another; and a covering extending between at least two adjacent legs such that at least one opening is defined between two adjacent legs.

Inventors: LE GETTE BRIAN EDWARD, TIPP ALAN, WERNER JUSTIN SAUL, WILSON RONALD L II, LE GETTE, BRIAN, EDWARD, TIPP, ALAN, WERNER, JUSTIN, SAUL, WILSON, RONALD, L., II
Applicants: GRAY MATTER HOLDINGS LLC, GRAY MATTER HOLDINGS, LLC
Application year: 2001
Main classification: E04H
IPC codes: E04H15