Abstract:
A rolling information display system includes a heated roller grill having at least a first coated, heated roller positioned adjacent a second coated, heated roller, said at least first and second coated, heated rollers rotating together; and a tube comprising a plastic material resistant to temperatures at which the heated roller grill operates, the tube being open on both ends and further comprising rolling surfaces at opposing ends of the tube for rolling in contact with heated rolling surfaces of the heated roller grill and one or more recessed surfaces for bearing information about products provided on the heated roller grill. Information is printed in the one or more recessed surfaces, or is applied directly to or molded directly into the recessed surfaces. The rolling surface at opposing ends of the tube are integral with the tube. The products provided on the heated roller grill are food items.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    Pursuant to 35 U.S.C. §120, this continuation application claims priority from co-pending U.S. patent application Ser. No. 14/257,680, entitled Rolling Information Display for Roller Grill, naming Paula Sanders Fenton as inventor, filed Apr. 21, 2014, which pursuant to 35 U.S.C. §120, claims priority from U.S. patent application Ser. No. 13/344,734, entitled Rolling Information Display for Roller Grill, naming Paula Sanders Fenton as inventor, filed Jan. 6, 2012, which pursuant to 35 U.S.C. §120, claims priority from U.S. patent application Ser. No. 12/497,430, entitled Rolling Information Display for Roller Grill, naming Paula Sanders Fenton as inventor, filed Jul. 2, 2009, which pursuant to 35 U.S.C. §119 (e), claims the benefit of U.S. Provisional Patent Application Ser. No. 61/077,995, entitled Rolling Information Display for Roller Grill, naming Paula Sanders Fenton as inventor, and filed Jul. 3, 2008. The contents of these aforementioned United States patent applications are incorporated by reference herein in their entirety for any and all purposes. 
     
    
     TECHNICAL FIELD OF THE INVENTION 
       [0002]    The present invention relates generally to a rolling information display apparatus for use with a roller grill. 
       BACKGROUND OF THE INVENTION 
       [0003]    Roller grills are often used at today&#39;s convenience stores and concession stands. These roller grills are employed to heat food items such as hot dogs and taquitos. The food items rest on heated rollers that rotate and cause the food items to roll while absorbing heat from the roller surfaces. These roller surfaces are typically made of chrome and/or coated with a non-stick material, such as knurreled TEFLON™. An example type of roller grill is available from Star Manufacturing, Inc. 
         [0004]    Customers interested in the food items need to receive information about the items, such as prices. However, food items on the roller grill cannot be labeled by conventional means. One way to provide this information is to have a menu mounted to a wall, but space in retail locations is at a premium, and food items often change throughout the day. 
         [0005]    One other way of providing information to customers about the food items relates to encasements for the roller grills. The roller grills are typically encased in glass cases, under sneeze guards, or otherwise shielded to prevent contamination of food, and to prevent injuries. Placing information about the food items on the encasements for the roller grills is one way of informing customers. However, the tops of the cases are often employed as counter space or oriented away from the customers. Additionally, placing information on the fronts of the cases blocks customers&#39; views of the food items. 
         [0006]    An alternative way of providing information about food items to customers is to provide a display inside the encasements that avoids obscuring view of the food items. In one example, rails are mounted inside the encasements in proximity to the rollers and oriented perpendicular to the rollers, and displays are mounted to the rails. However, these rails and displays prevent food items from being easily removed from the case or moved around on the grill, and the displays block customer views of the food items to some degree. Further, these rails and displays are expensive and are often difficult to clean. 
         [0007]    Some attempts at supplying the information have also involved inserting stationary items on and/or between the rollers. These items have obstructed views and hamper removal and rearrangement of food items. Perhaps more importantly, these items often make contact with the rollers causing damage to the surface of the rollers of the grill due to friction when contacting with the rolling surfaces. 
       SUMMARY OF THE INVENTION 
       [0008]    In one aspect, a rolling information display apparatus for use with a roller grill includes an elongated envelope that is at least partially non-opaque or clear and that contains at least one offering. A cap is removably engagable with the envelope to cover at least one opening of the envelope. An information bearing medium is removably positioned inside the envelope through the opening. In some embodiments, a sealing member is disposed over the opening to create a seal, such as a substantially water-tight seal. In certain embodiments this seal may be positioned between the envelope and the cap when the cap is engaged with the envelope. In another aspect, a rolling information display apparatus for use with a roller grill is a cylindrical rolling member having one or more rolling surfaces rolling in contact with heated rolling surfaces of the grill. The cylindrical rolling member also has one or more recessed surfaces bearing information about food items offered for sale on the grill. The recessed surfaces are provided in regions of the rolling member that are of diameter less than regions of the rolling member in which the rolling surfaces are provided. 
         [0009]    Also described herein is a rolling information display apparatus operable to rotate on a roller grill, the apparatus including an elongated envelope defined by a surface that is at least partially non-opaque and having at least one opening; a cap removably positioned over the at least one opening of the envelope; and an information bearing medium removably positioned inside the envelope through the at least one opening of the envelope. The envelope is substantially cylindrical in shape. The apparatus further comprises a sealing member disposed to create a substantially water-tight seal over the at least one opening of the envelope. The seal created by the sealing member is substantially air-tight and water-tight. The apparatus further comprises a sealing member disposed to create a seal between the envelope and the cap when the cap is engaged with the envelope. 
         [0010]    Further, described herein is a rolling information display apparatus operable to rotate on a roller grill, the apparatus including a cylindrical rolling member having: (a) one or more rolling surfaces for rolling in contact with heated rolling surfaces of the roller grill; and (b) one or more recessed surfaces bearing information about food items offered for sale on the roller grill, wherein the recessed surfaces are provided in regions of the rolling member that are of diameter less than regions of the rolling member in which the rolling surfaces are provided. The apparatus further comprises an information bearing medium attached to at least a portion of the recessed surfaces. The information bearing medium is formed as a sheet of material that is wrapped around the cylindrical rolling member. The information bearing medium is formed as a tube of material that is positioned onto the cylindrical rolling member. At least one of the one or more rolling surfaces of the cylindrical rolling member is removably attachable. The apparatus of claim  6 , wherein the information is disposed by direct application onto the recessed surfaces. The information is formed directly into the recessed surfaces. 
         [0011]    Moreover, described herein is a rolling information display apparatus operable to rotate on a roller grill, the apparatus including a heat resistant, cylindrical tube bearing information about food products placed on the roller grill; and a pair of tires at or near either end of the tube for rolling on surfaces of the roller grill, wherein: (a) the tires are of substantially equal diameter and are situated in parallel planes orthogonal to a longitudinal axis of the cylindrical tube; and (b) the tires are soft and heat resistant to ensure that the tires will not slip on the roller grill surfaces, will not immediately damage the roller grill surfaces, and will not be immediately damaged by placement on the roller grill. The information is molded directly into the surface of the heat resistant, cylindrical tube. The information is at least one of printed or painted directly onto the heat resistant, cylindrical tube surface. The information bearing medium is attached to the exterior of the heat resistant, cylindrical tube. 
         [0012]    Still further described herein is a rolling information display apparatus operable to rotate on a heated roller grill having at least a first coated, heated roller positioned adjacent a second coated, heated roller, the rolling information display apparatus including a substantially symmetrical cylindrical and open tubular rolling member including a first rolling surface having a first diameter and operable to roll in contact with the first coated, heated roller and the adjacent second coated, heated roller of the heated roller grill; a second rolling surface having a second diameter and operable to roll in contact with the first coated, heated roller and the adjacent second coated, heated roller of the heated roller grill; and a recessed surface of a heat resistant material having a third diameter and including information about a food item operable to be offered for sale on the heated roller grill, and the information positioned adjacent the recessed surface of the substantially symmetrical cylindrical and open tubular rolling member. The recessed surface is provided between the first rolling surface and the second rolling surface in a region of the substantially symmetrical cylindrical and open tubular rolling member. The third diameter of the recessed surface is less than both the first diameter of the first rolling surface and the second diameter of the second rolling surface of the substantially symmetrical cylindrical and open tubular rolling member. The first diameter of the first rolling surface and the second diameter of the second rolling surface are substantially the same. The first rolling surface and the second rolling surface of the tubular rolling member are: (a) configured to roll when in contact with the first coated, heated roller of the heated roller grill and the adjacent second coated, heated roller of the heated roller grill while the first coated, heated roller and the adjacent second coated, heated roller of the heated roller grill rotate, and (b) comprised of a material that is (i) sufficiently heat resistant with respect to the first coated, heated roller and the adjacent second coated, heated roller of the heated roller grill, and (ii) operable to roll at least partially between the first coated, heated roller and the adjacent second coated, heated roller of the heated roller grill and on the coated surfaces of the first coated, heated roller and the adjacent second coated, heated roller of the heated roller grill during operation. The information is disposed onto the recessed surfaces. The first and second rolling surfaces are integral with the recessed surface. 
         [0013]    Also described herein is a rolling information display system including a heated roller grill having at least a first coated, heated roller positioned adjacent a second coated, heated roller, said at least first coated, heated roller and the second coated, heated roller rotating together when in operation; and a tube comprising a plastic material resistant to temperatures at which the heated roller grill operates, the tube being open on both ends and further comprising rolling surfaces at opposing ends of the tube for rolling in contact with heated rolling surfaces of the heated roller grill and one or more recessed surfaces for bearing information about products provided on the heated roller grill. The information is printed in the one or more recessed surfaces. The information is painted in the one or more recessed surfaces. The information is applied directly to the one or more recessed surfaces. The information is molded directly into the recessed surfaces. The tube is substantially symmetrical and cylindrical. The rolling surface at opposing ends of the tube are integral with the tube. The products provided on the heated roller grill are food items. 
         [0014]    In addition, described herein is rolling information display apparatus operable to rotate on a heated roller grill having rotating rollers that include at least a first heated roller positioned adjacent a second heated roller, the rolling information display apparatus including a tube comprising a plastic material resistant to temperatures at which the heated roller grill operates, the tube being open on both ends and further comprising rolling surfaces at opposing ends of the tube for rolling in contact with heated rolling surfaces of the heated roller grill and one or more recessed surfaces on the exterior of the tube for bearing information about food products provided on the heated roller grill, the plastic material being one that is reusable and washable the rolling surface of the type that do not wear the heated roller grill surfaces of the rotating rollers upon placement on the heated roller grill surfaces of the rotating rollers. The information is printed in the one or more recessed surfaces. The information is painted in the one or more recessed surfaces. The information is applied directly to the one or more recessed surfaces. The information is molded directly into the recessed surfaces. The tube is substantially symmetrical and cylindrical. The rolling surface at opposing ends of the tube are integral with the tube. 
         [0015]    Still further is described a rolling information display apparatus operable to rotate on a roller grill, the apparatus including a heat resistant, cylindrical tube bearing information about products placed on the roller grill; rolling surfaces at or near either end of the tube for rolling on surfaces of the roller grill, wherein: (a) the rolling surfaces are of substantially equal diameter; and (b) the rolling surface are heat resistant to ensure they will not sufficiently slip on the roller grill surfaces, will not wear the roller grill surfaces upon placement on the roller grill surfaces, and will not be damaged by placement on the roller grill; and an information bearing medium disposed in or about the heat resistant, cylindrical tube. The rolling surface may be removable and releasable from the heat resistant, cylindrical tube. The heat resistant cylindrical tube is primarily composed of a material that is at least partially transparent. The rolling surfaces are of substantially equal diameter and are situated in parallel planes orthogonal to a longitudinal axis of the cylindrical tube. The heat resistant cylindrical tube is substantially water resistant. 
         [0016]    Depending on the particular embodiment, various other aspects and embodiments may be provided. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0017]      FIG. 1  is a block diagram illustrating a rolling information display apparatus employed in a retail environment with a roller grill. 
           [0018]      FIG. 2A  and  FIG. 2B  provide perspective views illustrating a rolling information display apparatus disposed on a roller grill together with food items. 
           [0019]      FIG. 3A  and  FIG. 3B  provide perspective views illustrating a first embodiment of a rolling information display apparatus for use with a roller grill. 
           [0020]      FIG. 4A ,  FIG. 4B , and  FIG. 4C  provide perspective views illustrating a second embodiment of a rolling information display apparatus for use with a roller grill. 
           [0021]      FIG. 5A ,  FIG. 5B , and  FIG. 5C  provide perspective views illustrating a third embodiment of a rolling information display apparatus for use with a roller grill. 
           [0022]      FIG. 6A  and  FIG. 6B  provide perspective views illustrating a fourth embodiment of a rolling information display apparatus for use with a roller grill. 
           [0023]      FIG. 7  is a flow diagram illustrating a rolling information display method for use with a roller grill. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0024]    In the following description, like numbers refer to like elements. 
         [0025]    The following disclosure is directed toward a rolling information display apparatus and method. Starting with  FIG. 1 , the apparatus  100  is partly composed of an information bearing medium  102  on which information about food items  104  is printed. An example of the medium  102  is PROPRINT™, which is a synthetic printed material, such as plastic paper made of talc-filled polyethylene. This medium  102  in certain embodiments is heat resistant up to three-hundred fifty degrees Fahrenheit. 
         [0026]    An example of the information or messages provided on medium  102  may include the prices of food item. For example, a name and price of one food item is printed on a top half of a page of plastic paper, and a name and price of the same or another food item is printed on a bottom half of the same side of the page. Then the page is rolled into a tube with the printed side facing outwards and the food item names and prices oriented to face opposite one another. The information or message is then visible through a portion of area of the apparatus  100  that is at least non-opaque, clear, or transparent in the visible light spectrum. 
         [0027]    The apparatus  100  in certain embodiments may be composed of an elongated envelope  106  that is generally cylindrical in shape. In some embodiments, the envelope  106  is a length of high heat resistant polycarbonate tubing. In some embodiments, the tubing is clear tubing and is open on one or both ends. Any of a variety of materials are suitable for use in the present invention. In a preferred embodiment, these materials are heat resistant at temperatures at which roller grills operate, and are safe for use with food equipment. In certain embodiments, the materials are regulatory approved, such as FDA approved and/or NSF approved. 
         [0028]    The rolled page of medium  102  is placed into the envelope  106 . In some embodiments, the page is sized to fit in the envelope  106  with the outer surface of the page resting against the inner surface of the envelope and with the food item names and prices revealed. In other words, the page is not so large or the tube so small that the page, in order to fit into the tube, must be rolled so as to obscure any part of the information. In some embodiments, the height of the page is equal to the circumference of the tubing, or is not significantly larger than the circumference of the tubing. In other embodiments, the medium  102  is placed around the exterior of the outer surface of the envelope. In such a case, the envelope may not include a non-opaque or clear portion. 
         [0029]    The apparatus  100  may, in certain embodiments, include a cap  108  that removably engages with the envelope  106 . In some embodiments, the cap  108  is made of high heat resistant polycarbonate. In some embodiments, the cap  108  is made of high heat resistant silicon. In some embodiments, the cap  108  engages with an open end of a tubular envelope. In some embodiments, two caps engage with two openings of a tubular envelope. 
         [0030]    In some embodiments, the cap  108  is engaged with the envelope  106  to seal the medium  102  in the envelope  106  and thereby create a low humidity environment for the medium  102 . In other words, there is little or no moisture present in the sealed apparatus  100 . As a result, the interior surface of the envelope  106  does not fog over when placed on rolling, heated surfaces of a roller grill during a grilling operation of the roller grill, and the medium does not degrade. This feature, in a preferred embodiment, provides a water-tight seal during a dish washing or dish washer cycle. This allows the apparatus  100  to be cleaned and sanitized, while ensuring that the inside of the envelope  106  and the medium  102  stays dry. In some embodiments, the cap  108  is engaged with the envelope  106  in a humidity controlled environment in which the humidity is controlled to be low. In some embodiments, personnel at a retail location  110  engage the cap  108  with the envelope in a humidity controlled environment at the retail location  110 . In some embodiments, the cap  108  is engaged with the envelope  106  before the apparatus  100  is shipped to the retail location  110 . 
         [0031]    Turning now also to  FIG. 2  and referring generally to  FIG. 1 ,  FIG. 2A , and  FIG. 2B , the rolling information display apparatus  100  is placed on rolling, heated surfaces of a roller grill  112  together with food items  104  about which information is provided on the information bearing medium  102 . The rolling display apparatus  100  is configured to roll on the roller grill  112  together with the food items. In some embodiments, names and prices of different food items  104  are alternately revealed by the rolling action of the rolling display apparatus  100 . In some embodiments, these prices constitute unilateral contractual offers to customers in a retail environment  110 , such as a convenience store. In some embodiments, customers purchase the food items  104  at a cash register  114  in the retail environment  110 , and the contractual terms are honored by personnel in the retail environment. 
         [0032]    In some embodiments, personnel in the retail environment  110  periodically remove the rolling display apparatus  100  from the roller grill  112  and wash it. The rolling display apparatus  100 , in a preferred embodiment, is substantially airtight and watertight to prevent moisture from entering the apparatus  100  during washing by hand or machine  116 . In additional or alternative embodiments, personnel in the retail environment periodically remove the rolling display apparatus  100  from the roller grill  112  and send it offsite for cleaning. 
         [0033]    In some embodiments, personnel in the retail environment periodically disengage the cap  108  from the envelope  106  and replace the medium  102  with a new medium  102  having new information or messages about new food items  104 , additional food items  104 , new contractual terms, and/or additional contractual terms or other messages. The personnel then reseal the envelope and replace the apparatus  100  on the grill  112 . In additional or alternative embodiments, personnel in the retail environment  110  receive a new apparatus  100  and replace an old apparatus  100  with the new apparatus  100 , which can have new and/or additional information printed on its medium  102 . 
         [0034]    Turning now to  FIG. 3A  and  FIG. 3B  and referring generally thereto, a first embodiment of the rolling display apparatus is composed in part of an envelope  106  made of a tube of clear material, such as a heat resistant polymer such as a polycarbonate. In this embodiment the tube is open on both ends. A pair of caps  108  are configured to engage the tube by slipping onto the exposed ends of the tube and adhering by friction to the tube. These caps  108  are made, for example, from polycarbonate or silicone rubber. The caps  108  each have a circular wheel section  300  formed to contact the rolling heated surfaces of the roller grill. The diameters of the wheel section of the caps  108  are larger than the other diameters of the apparatus. Therefore, it is ensured that only the wheel regions of the caps  108  contact the grill during rolling operation, which avoids transfer of grease and other material from the surface of the grill to the surface of the envelope  106 , and minimizes wear to and from the caps  108 , such as wear to the roller grill roller surfaces, which may include a TEFLON coating. In other embodiments, the portions of the caps  108  that contact the roller grill are not positioned at the far ends of the apparatus  100 . 
         [0035]    Turning now to  FIG. 4A ,  FIG. 4B , and  FIG. 4C  and referring generally thereto, an alternative embodiment of the apparatus is composed in part of an envelope  106  made of a tube of clear material, such as polycarbonate. This tube is open on both ends and the ends of the tube are threaded on the inside. In other embodiments the threads are on the outside. A pair of caps  108  each have a threaded insert section  402  that is configured to engage the tube by slipping into the exposed ends of the tube and engaging the threads on the inside of the tube. These caps  108  are made, for example, from polycarbonate or silicon. A pair of sealing members in the form of O-rings  400  are configured to slip over the threaded insert sections  402  and create a substantially airtight and watertight seal when the caps  108  are engaged with the envelope  106 . The O-rings are made, for example, from a high heat resistant silicon with a designated or desired hardness/softness. These O-rings are circular and have a diameter greater than the diameters of the envelope  106  and caps  108 . Therefore, the O-rings  400  are configured to continuously contact the rolling, heated surfaces of a roller grill during a grilling operation while lifting the envelope  106  and caps  108  away from the grill surfaces. As a result, transfer of grease and other material from the surface of the grill to the surfaces of the envelope  106  and caps  108  is avoided, and wear to and from the envelope  106  and caps  108  is avoided or minimized. In other embodiments, the O-rings  400  are integrated as part of the caps  108 . 
         [0036]    Turning now to  FIG. 5A ,  FIG. 5B , and  FIG. 5C  and referring generally thereto, yet another embodiment of the apparatus is composed in part of an envelope  106  made of a tube of clear material, such as polycarbonate. This tube is open on both ends and the ends of the tube are threaded on the outside. A pair of caps  108  are threaded on the inside and configured to engage the tube by screwing onto the exposed ends of the tube and engaging the threads on the outside of the tube of envelope  106 . These caps  108  are made, for example, from polycarbonate or silicon. A pair of sealing members in the form of O-rings  400  are configured to slip over the externally threaded ends of the tube and create a substantially airtight and watertight seal when the caps  108  are engaged with the envelope  106 . The O-rings are made, for example, from high heat resistant silicon. An additional pair of sealing members in the form of stoppers  500  that fit between the ends of the tube  106  and the cap  108  to assist in creating the airtight and watertight seal. The stoppers  500  are made, for example, from high heat resistant silicon. In some embodiments, the stoppers  500  can instead be formed O-rings. 
         [0037]    The O-rings  400  are circular and have a diameter greater than the diameters of the envelope  106  and caps  108 . Therefore, the O-rings  400  are configured to continuously contact the rolling, heated surfaces of a roller grill during a grilling operation while lifting the envelope  106  and caps  108  away from the grill surfaces. As a result, transfer of grease and other material from the surface of the grill to the surfaces of the envelope  106  and caps  108  is avoided, and wear to and from the envelope  106  and caps  108  is avoided or minimized. In other embodiments, the O-rings  400  may be positioned over the tube of the envelope  106  closer to the middle of the apparatus  100 . In such an embodiment, the O-rings  400  may not serve to seal the ends or openings of the apparatus  400 . 
         [0038]    Turning now to  FIG. 6A  and  FIG. 6B  and referring generally thereto, a further embodiment of the apparatus is composed in part of a cylindrical rolling member having one or more rolling surfaces  600  for rolling in contact with heated rolling surfaces of a roller grill. The cylindrical rolling member also has one or more recessed surfaces  602  for bearing information, such as about the food items offered for sale on the roller grill. The recessed surfaces  602  are provided in regions of the rolling member that are of diameter less than regions of the rolling member in which the rolling surfaces are provided. The rolling member can be formed of polycarbonate, glass, metal, rubber, plastic, or any other suitable or desirable materials. 
         [0039]    The information will preferably concern the food items and can be disposed or positioned in and/or on the recessed surfaces  602  in numerous ways. For example, the information bearing medium  102  can be attached to the recessed surfaces  602  by glue, adhesive or other suitable attachment mechanism, such as shrink wrap, friction fit, bonded, and the like. The information bearing medium  102  can be a sheet that is wrapped around the member, such as recessed surfaces  602 . Alternatively or additionally, the medium  102  can be a tube that slides onto the member. In this case, one or more of the rolling surfaces  600  may be detached so that the tube can slide onto the recessed surfaces, and the rolling surfaces  600  can be reattached or attached directly to the medium. Alternatively or additionally, the information can be printed, painted, or otherwise directly applied to the recessed surfaces  602 . In this case, the recessed surfaces  602  serve as the information bearing medium  102 . Alternatively or additionally, the information can be written into the recessed surfaces  602  by etching, molding, carving, embossing, or any other means. In this case, also, the recessed surfaces  602  serve as the information bearing medium  102 . When the recessed surfaces  602  serve as the information bearing medium  102 , it is envisioned that the rolling surfaces  600  can be detachable in certain embodiments. Thus, an entirely new rolling member can be sent to a retail location to replace an existing rolling member, or a new information bearing medium can be sent to replace an existing information bearing medium. This information bearing medium can be a sheet or a tube. The tube can be configured to slidingly engage with a reusable recessed surface region of the rolling member, or the tube can serve as a new recessed surface region and engage with disengagable, reusable rolling surface regions of the rolling member. 
         [0040]    Turning now to  FIG. 7 , a rolling display method for use with a roller grill includes resting or positioning an elongated, light transmissive envelope on rolling heated surfaces of a roller grill at block  700 . At  700 , the envelope is placed to rest on the grill together with food items about which information is provided on an information bearing medium disposed in the light transmissive envelope. For example, taquitos and hot dogs are placed on the grill, and the information displayed by the information bearing medium includes prices for purchasing the hot dogs and taquitos. 
         [0041]    At  702 , the food items are sold to customers who have viewed the information. Block  702  constitutes honoring the contractual terms printed on the information bearing medium, such as prices of food items. One skilled in the art will readily appreciate alternative or additional contractual terms that can be printed on the information bearing medium and honored at  702 . 
         [0042]    In some embodiments, the information bearing medium is disposed in the elongated envelope at step  704 , in which the elongated envelope includes portions that are non-opaque or clear so that the information bearing medium is visible. For example, a page of plastic paper bearing food item prices can be rolled up and placed inside the tube. Then the envelope is sealed at block  706  by engaging one or more disengagable caps or covers with the envelope. In some embodiments,  706  includes screwing threaded caps onto threaded ends of the envelope with an O-ring or other sealing member disposed to create an airtight and watertight seal. In some embodiments,  706  includes creating a low humidity environment for the medium. In other words, there is little or no moisture and no source of moisture present in the envelope when the envelope is sealed at step  706 . As a result, the interior surface of the envelope does not fog or become opaque when placed on rolling, heated surfaces of a roller grill during a grilling operation of the roller grill, and the medium does not quickly degrade. In some embodiments, the cap is engaged with the envelope in a humidity controlled environment in which the humidity is controlled to be low. 
         [0043]    In some embodiments, the envelope is periodically removed from the roller grill and washed at block  708 . The washing can occur by hand or machine. A decision to wash the envelope can be made at decision block  710  whenever the envelope is dirty. Alternatively or additionally, the decision to wash can be made at predetermined time intervals. 
         [0044]    In some embodiments, a new information bearing medium arrives periodically, which prompts a decision at decision block  712  to remove the envelope from the grill at block  714 , disengage or remove the cap from the envelope at block  716 , remove the old medium from the envelope at block  718 , and dispose or position the new information bearing medium in the envelope at block  720 . The envelope is then resealed at block  722 , washed at block  708 , and replaced on the grill at  700 . One or more identical or different messages may be included or placed on the information bearing medium. 
         [0045]    It should be readily understood that the method can be modified for use with the cylindrical rolling member of  FIG. 6 . In this case, the rolling member is placed on the grill with the information already present on the recessed surfaces. When a new rolling member arrives, the old rolling member can be disposed of or set aside. Washing of the rolling member can be performed in some embodiments. In the case that the information is to be changed, but all or part of the rolling member reused, then the information bearing medium is discarded when a new one arrives. 
         [0046]    It is envisioned that the example materials listed above can be replaced with various other types of materials. For example, it is envisioned that components of the apparatus can be made of metal, stone, rubber, plastic, wood, paper, or other organic products, glass or other crystals, polyester or other fabrics, paper, etc. One skilled in the art will readily recognize many suitable candidate materials having the requisite heat resistance, appearance, and desired qualities. 
         [0047]    In summary, in the embodiments described above, the apparatus is a heat resistant, cylindrical tube, which may include circular, triangular, square, or other polygonal cross-sections, that bears information, and that has at least two tires at or near either end of the tube for rolling on the roller grill. These tires are of substantially equal diameter and are situated in parallel planes orthogonal to a longitudinal axis of the cylinder. The tires are preferably soft and heat resistant to ensure that the tires will not slip on the roller grill surfaces, will not damage the roller grill surfaces, and will not be damaged by placement on the roller grill. The heat resistant, cylindrical tube bears information, for example, by encapsulating an information bearing medium within the non-opaque, air tight, water tight tube in certain embodiments. Alternatively, the information is molded directly into the tube surface, or printed, painted, or placed directly onto the tube surface. As another alternative, the information bearing medium is attached to the tube exterior. 
         [0048]    The foregoing description is of exemplary and preferred embodiments of a rolling information display apparatus and method. The invention is not limited to the described examples or embodiments. Alterations and modifications to the disclosed embodiments may be made without departing from the invention. The meaning of the terms used in this specification are, unless expressly stated otherwise, intended to have ordinary and customary meaning and are not intended to be limited to the details of the illustrated structures or the disclosed embodiments. None of the foregoing description is to be read as implying that any particular element, step, or function is an essential element which must be included in the claim scope. 
         [0049]    The scope of patented subject matter is defined by the issued claims.