Abstract:
A rollable paint tray which will be maneuvered on a floor by the painter manipulating an extended handle of a paint roller assembly is disclosed. The tray will have a body, a plurality of rolling members and a structural configuration which permits placement of the paint roller on the tray where it will remain in contact during maneuvering of the tray by the painter. The body has a paint containment area, a paint roller containment area and a rolling surface area. The painter may easily replenish fresh paint on the paint roller and roll the paint roller to obtain a desired quantity and uniformity of coverage on the paint roller. The tray permits the painter to paint a large area, along a great distance, while remaining standing straight. This eliminates the conventional need for the painter to manually move their supply of fresh paint which often involves bending or squatting.

Description:
CROSS-REFERENCE 
     This application is a continuation-in-part of Ser. No. 13/647,446 filed Oct. 9, 2012, entitled “Rollable paint bucket”, currently pending. The original application is incorporated herein by this reference. 
    
    
     BACKGROUND 
     1. Field of the Invention 
     Generally, the invention relates to containers to contain paint during a painting procedure. More specifically, the invention relates to such containers having a paint rolling surface slightly offset from horizontal and capable of being easily moved about the floor by the painter during the painting procedure. 
     2. Description of the Prior Art 
     Various methods are known to apply paint to a wall surface. It may be mechanically sprayed on the wall surface without any paint retaining structure actually touching the wall surface. This method is not directly applicable to the present invention and will not be discussed further. Typically a paint retaining structural element will have paint placed on the paint retaining structural element with transfer of such paint occurring by wiping or rolling the paint retaining structural element on the wall surface. The two most common painting tools having applicable paint retaining structural elements are the paint brush and the paint roller. The present invention may be utilized with paint brushes to significantly enhance the painting experience during use of the paint brush. The present invention is generally related to use of the paint roller, and more particularly, to use with the paint roller deployed with a long handle. Paint rollers have a cylindrical portion with a paint retaining surface, such as a mat material, rotationally mounted to a manipulation part, typically in the form of a handle. Most modern paint roller handles have means to attach a long extension handle thereto, such as a female threaded cavity in the end of the handle to receive threads on a male end of the long extension handle. During use paint is gathered on the paint retaining surface of the cylindrical portion to a desired uniformity and density and then the paint retaining surface is rolled along the wall surface to transfer the paint to the wall surface. 
     Painters of wall surfaces have personal preferences for painting equipment utilized and the orientation of, and interaction with, that painting equipment during their respective painting. The following description depicts a typical conventional painting procedure performed on a large interior or exterior wall surface of a structure. The three most common methods of containment of the paint utilized for such a project are used during this description. 
     The first method is use of a bulk paint container, such as a round five gallon bulk paint bucket, and working directly from the round bulk paint container. Such use of round bulk paint buckets typically require use of an insert having a planar rolling surface positioned thereon with the insert placed partially into the round bulk bucket. In order to utilize the planar rolling surface for the intended use the bulk bucket will contain well less than the containment capacity of paint where a large portion of the insert is above the level of the paint. In use the paint roller will be placed in contact with the paint and then rolled along the planar surface of the insert to uniformly distribute the paint on the roller. 
     The second method is use of a large dedicated paint bucket designed to hold a relatively large quantity of paint, such as several gallons, while allowing use of a conventional paint roller. Such bulk paint buckets will typically either have a flat surface on them to roll the paint roller on above the paint contained in the bucket or will accept an insert having a planar rolling surface positioned thereon with the dedicated paint bucket. 
     The third method is use of a paint roller pan with an upward sloped rolling surface extending from a deeper paint containment end. Typically these paint roller pans contain no more than a gallon of paint at a time and are rectangular in shape, with slightly rounded corners, when viewed from above. Such paint roller pans will often have structures thereon to position the pan in a stable and secure manner on a ladder at an elevated position above the floor. This ladder placement method permits the painter to stand on the ladder during painting. This orientation is more often used with a handheld paint brush than with a paint roller. When a paint roller pan is used with a paint roller with long handle assembly, the paint roller pan will often rest on the floor adjacent the wall surface being painted. It is known in the art to provide wheels on conventional paint roller pans where they may be moved about by the painter during the painting procedure. Such conventionally known wheeled paint roller pans typically do not have a dedicated area for placement of the paint roller of a paint roller assembly fitted with an elongated handle for easy manipulation of the painter. 
     Each of these three methods of paint containment, bulk paint container, large dedicated paint bucket and paint roller pan, suffer from various deficiencies. When used with a paint roller having an extension handle they are all most often used while the respective paint container is resting on the floor. This floor positioning allows the painter to easily use the long extension handle to manipulate the paint roller portion to deposit a desired amount of paint, and to a uniform manner, on the paint roller while the painter remains standing straight without bending over or stooping. The painter will then manipulate the extension handle to transfer the paint from the paint roller to the wall surface. With the extension handle this may be done from near floor level to near ceiling level while the painter remains standing straight without bending over or stooping. The main problem occurs when the painter has painted an area of the wall surface and moves to start painting the next adjacent portion of the wall surface. It then becomes necessary to physically move the paint container a similar distance or for the painter to move over to the paint container each time replenishment of a fresh supply of paint on the paint roller is required. Each of these options is time consuming. Eventually the paint container will be moved to a new location during a painting procedure. It being understood that bending, stooping or squatting to physically engage a paint container has been known to cause injury to painters. Additionally, such activities, even in the absence of injury, tend to tire and fatigue the painter. It is also understood that such displacement of paint containers occasionally result in the spillage of paint onto the floor, or onto any protective covering placed on the floor during the painting procedure. Such spillage is expensive as it always wastes some paint and occasionally causes damages to objects not intended to have paint applied to. When the conventionally known paint trays having wheels are utilized the painter does not have a safe position to place the paint roller in where inadvertent spillage of paint is eliminated. 
     As can be seen there remains a need for a paint tray which will retain paint, allow easy and uniform placement of the paint on a paint roller having an extension handle and which can be easily moved about during the painting procedure as desired by the painter, all while the painter remains standing straight without bending or stooping. The present invention substantially fulfills these needs. 
     SUMMARY 
     In view of the foregoing disadvantages inherent in the known methods of containing paint during painting procedures, your applicant has devised a rollable paint tray to retain paint during a painting procedure. The painting procedure is performed with a paint roller assembly having a paint roller, a paint roller retention assembly and an elongated handle. The paint roller retention assembly provides for axial rotation of the paint roller while the elongated handle provides for a significant spacing of a painter from the paint roller during the painting procedure. The rollable paint tray has a body having a usage orientation during the painting procedure which is relative to a generally flat support surface. The body has a workpiece paint containment area, a rolling surface area and a paint roller containment area. The workpiece paint containment area provides for containment of a quantity of the workpiece paint and ready access for transfer of a portion of the workpiece paint contained in the workpiece paint containment area to the workpiece paint roller assembly during the painting procedure. The rolling surface area provides for distribution of workpiece paint onto the workpiece paint roller assembly during the painting procedure. The rolling surface area has an angular offset from horizontal when the rollable paint tray is positioned in the usage orientation and an angular offset from vertical when the rollable paint tray is positioned in the usage orientation. The angular offset of the rolling surface area from horizontal is significantly less than the angular offset of the rolling surface area from vertical. The paint roller containment area provides for the workpiece paint roller of the workpiece paint roller assembly to be placed relative to the rollable paint tray where the user may manipulate the elongated workpiece handle of the workpiece paint roller assembly to easily move the rollable paint tray about on the generally flat support surface during the painting procedure. The rollable paint tray also has a plurality of rolling members attached relative to the body of the rollable paint tray. The rolling members provide for ready movement of the rollable paint tray over the generally flat support surface during the painting procedure. 
     My invention resides not in any one of these features per se, but rather in the particular combinations of them herein disclosed and it is distinguished from the prior art in these particular combinations of these structures for the functions specified. 
     There has thus been outlined, rather broadly, the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. There are, of course, additional features of the invention that will be described hereinafter and which will form the subject matter of the claims appended hereto. Those skilled in the art will appreciate that the conception, upon which this disclosure is based, may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention. 
     It is therefore a primary object of the present invention to provide for a rollable paint tray which will be easily moved about the floor while the painter remains standing upright while painting with a paint roller with an extension handle. 
     Other objects include; 
     a) to provide for the rollable paint tray to have a paint containment area and rolling surface area positioned adjacent the paint containment area. 
     b) to provide for the rollable paint tray to have a paint roller containment area, which is generally behind rolling surface area, for placement of the paint roller during manipulated movement of the rollable paint tray where the painter will be able to easily manipulate movement of the rollable paint tray about the floor. 
     c) to provide for the rolling surface area for rolling of the paint roller to be angularly offset between horizontal and vertical while being significantly nearer to horizontal than to vertical. 
     d) to provide for the rollable paint tray to have attachable/detachable rolling members where the remainder of the rollable paint tray is stackable for storage and transport when the rolling members are removed. 
     e) to provide for drainage of paint from the paint roller containment area to the workpiece paint containment area across the rolling surface area. 
     f) to provide for angularly offset channels to cross the rolling surface area to provide for the drainage of paint from the paint roller containment area to the paint containment area. 
     g) to provide for the paint roller containment area to have a curved base complementary to a shape of the paint roller. 
     h) to provide for the paint containment area to be relatively deep and relatively short in width where an adequate supply of paint may be stored. 
     i) to provide for a plurality of elevated strips to be positioned on the rolling surface area which are linear and angularly offset relative to the rolling orientation of the workpiece paint roller. 
     j) to provide for opposing drainage channels across the rolling surface area which start at opposing ends of the paint roller containment area and converge to a common drainage point in the center of the edge of the paint containment area. 
     These together with other objects of the invention, along with the various features of novelty which characterize the invention, are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and the specific objects attained by its uses, reference should be had to the accompanying drawings and descriptive matter in which there is illustrated the preferred embodiments of the invention. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention will be better understood and objects other than those set forth above will become apparent when consideration is given to the following detailed description thereof. Such description makes reference to the annexed drawings wherein; 
         FIG. 1  is a perspective view of a rollable paint tray, with workpiece paint therein. 
         FIG. 2  is a side elevational view of the rollable paint tray depicted in  FIG. 1 . 
         FIG. 3  is a top plan view of the rollable paint tray depicted in  FIG. 1 . 
         FIG. 4  is a bottom plan view rollable paint tray depicted in  FIG. 1 . 
         FIG. 5  is a side elevational view of the rollable paint tray depicted in  FIG. 1  with portions of a workpiece paint roller assembly and select portions of the rollable paint tray depicted with dashed ‘hidden lines’ to depict placement and orientation of various components. 
         FIG. 6  is a side elevational view of a workpiece paint roller assembly and labeled as ‘Prior Art’. 
     
    
    
     DESCRIPTION 
     Many different devices having features of the present invention are possible. The following description describes the preferred embodiment of select features of those devices and various combinations thereof. These features may be deployed in various combinations to arrive at various desired working configurations of devices. 
     Reference is hereafter made to the drawings where like reference numerals refer to like parts throughout the various views. 
     The invention is a rollable paint tray capable of retaining paint and being easily moved about as desired by the painter during a painting procedure. Such movement will typically be on the floor of the area being painted. As is conventionally known for painting, the floor area will typically be covered with some temporary covering, such as plastic sheet material or a canvas tarp. It being understood that applicable rollable paint trays will be on top of such coverings and will roll about on those coverings. 
     In order to avoid repetitive bending over and standing up, applicable rollable paint trays will provide for the painter to utilize a conventional paint roller, with a conventional elongated handle extending therefrom, during the painting procedure. This combination of the rollable paint tray with the paint roller on a long handle permits the painter to stand upright during painting of a relatively large area. The painter will gather paint on the paint roller, apply that paint to a surface being painted in a repetitive manner and move the rollable paint tray to a new position all without moving significantly from the standing posture. When the painter moves slightly to position at a new unpainted area of the surface being painted, the painter will move the rollable paint tray a generally equal distance as their move utilizing manipulation of the handle of the paint roller. This eliminates stooping to move the paint tray and eliminate having to lift the paint tray off of the floor. It being understood that such lifting of conventional paint trays occasionally results in a spilling of paint from the paint tray. This also provides for the painter retain the paint roller assembly during an entire painting session from the time of placement of paint in the rollable paint tray until either the paint supply is depleted or until the area to be painted with the paint rolling is painted. In this manner a large surface area may be painted without requiring the painter to bend over even once or having to pick up the paint tray even once or to set down, or otherwise release, the paint roller assembly. 
     The term painting procedure as used herein refers generally to the gathering of workpiece paint from a rollable paint tray having features of the present invention onto a workpiece paint roller assembly for some useful purpose. It is only necessary that the comparative rollable paint tray being considered have the ability to perform those functions. It is envisioned that painters will utilize a rollable paint tray having features of the present invention with a workpiece paint brush without utilizing the workpiece paint roller assembly. Such possible exclusion of utilization of the workpiece paint roller assembly with an applicable rollable paint tray should not be viewed as limiting the scope of the present invention. 
     Overview 
     A rollable paint tray  20  retains workpiece paint  22 , shown in  FIG. 1 , during a painting procedure performed with a workpiece paint roller assembly  24 , shown in  FIG. 5  and  FIG. 6 . It being understood that the various workpieces, and their respective parts, are not part of the present invention. 
     Certain workpieces will be utilized with the present invention and are recited within the claims as workpieces. Such workpieces are recited in the claims and in this specification to give meaning to the various claimed features of the present invention. Again, it is noted that the workpieces form no part of the present invention. 
     Workpiece Paint Roller Assembly 
     The present invention utilizes a workpiece paint roller assembly having an elongated handle. While various styles are commercially available, and even more in the prior art, generally all such known paint roller assemblies are applicable for use with the present invention. 
       FIG. 6  depicts workpiece paint roller assembly  24  having various components, all conventionally known in the art, and labeled as ‘Prior Art’. A workpiece paint roller  26 , a workpiece paint roller retention assembly  28  and an elongated workpiece handle  30  form workpiece paint roller assembly  24 . Workpiece paint roller retention assembly  28  provides for axial rotation of workpiece paint roller  26  on workpiece paint roller assembly  24 . Elongated workpiece handle  30  is attached to workpiece paint roller retention assembly  28  and provides for significant spacing of the user, no shown in any of the views, from workpiece paint roller  26  during the painting procedure. 
     Rollable Paint Tray 
     Rollable paint tray  20  has a body  32  and a plurality of rolling members  34  attached relative to body  32 . Body  32  has a usage orientation during the painting procedure relative to a generally flat support surface  36 . As further described below body  32  has a paint containment area  38 , a rolling surface area  40  and a paint roller containment area  42 . Rollable paint tray  20  has a user accessible end  44  where the user would routinely stand during use of rollable paint tray  20  during the painting procedure. 
     Body  32  has a first end  46  and a second end  48 . Workpiece paint containment area  38  is positioned at first end  46  of body  32 . Paint roller containment area  42  is positioned at second end  48  of body  32 . Body  32  preferably is a one piece molded member  50 . Body  32  has a plurality of rolling member attachment positions  52 . Each rolling members  34  is detachably attachable to a respective rolling member attachment position  52 . 
     Paint containment area  38  provides for containing a quantity of workpiece paint  22 . Paint containment area  38  is readily accessible for transfer of a portion of workpiece paint  22  contained in paint containment area  38  to workpiece paint roller assembly  24  during the painting procedure. Paint roller containment area  42  has opposing ends  54  and  56 . Preferably paint roller containment area  42  is positioned on body  32  at user accessible end  44  of rollable paint tray  20 . Paint containment area  38  has a base  58  having an elevational height  60 . Paint containment area  38  has a width  62  and a depth  64 . Width  62  extends forward from a terminal edge  66  of rolling surface area  40 . Depth  64  extends downward from terminal edge  66  of rolling surface area  40 . Width  62  and depth  64  of workpiece paint containment area  38  are generally equal. 
     Rolling surface area  40  provides for distribution of workpiece paint  22  onto workpiece paint roller assembly  24  during the painting procedure. Rolling surface area  40  has an angular offset  68  from horizontal  70  when rollable paint tray  20  is positioned in a usage orientation  72  and angular offset  74  from vertical  76  when rollable paint tray  20  is positioned in usage orientation  72 . Angular offset  68  from horizontal  70  is significantly less than angular offset  74  from vertical  76 . Rolling surface area  40  further comprises a rolling orientation  78  where workpiece paint roller  26  is routinely moved during the painting procedure. Rolling surface area  40  has a lowest elevational extent  80 . 
     Paint roller containment area  42  provides for workpiece paint roller  26  of workpiece paint roller assembly  24  to be placed relative to rollable paint tray  20  where the user, not shown in any of the views, may manipulate elongated workpiece handle  30  of workpiece paint roller assembly  24  to easily move rollable paint tray  20  about on generally flat support surface  36  during the painting procedure. Paint roller containment area  42  has a base  82  having a curved contour  84 . Curved contour  84  is generally complementary to the shape of workpiece paint roller  26 . Base  83  of paint roller containment area  42  has an elevational height  86 . 
     Elevational height  86  of base  82  of paint roller containment area  42  is significantly elevated above elevational height  60  of base  58  of workpiece paint containment area  38 . 
     Base  82  of paint roller containment area  42  is higher that lowest elevational extent  80  of rolling surface area  40 . 
     Rolling members  34  are attached relative to body  32  of rollable paint tray  20 . Rolling members  34  provide for ready movement of rollable paint tray  20  over generally flat support surface  36  during the painting procedure. 
     Drainage Means 
     Some structural configuration will be provided where at least a portion of workpiece paint deposited in the paint roller containment area will be transferred to the workpiece paint containment area. It being understood that the structural members providing for the drainage means could take many configurations and orientations. Such structures preferably will be exposed but they may be actual closed ducts which are not visible. Preferably they will extend across the rolling surface area but that is dependant on placement of the various elements and, even when the workpiece paint containment area and the paint roller containment area are positioned at opposing ends of the body with the rolling surface area therebetween, the drainage structures can be positioned beyond the usable surface of the rolling surface area. 
     Paint roller containment area  42  has drainage means, depicted in the preferred embodiment as drainage channels  88  and  90 , to provide for at least a portion of workpiece paint  22  deposited in paint roller containment area  42  to drain into workpiece paint containment area  38  of body  32  of rollable paint tray  20 . Drainage channels  88  and  90  have a directional orientation  92  and  94  respectively. Directional orientation  92  and  94  of drainage channels  88  and  90  are each offset relative to rolling orientation  78  of rolling surface area  40 . Drainage channels  88  and  90  each extend across rolling surface area  40  from paint roller containment area  42  to workpiece paint containment area  38 . Drainage channels  88  and  90  converge toward paint containment area  38 . Drainage channels  88  and  90  are positioned respectively at opposing ends  54  and  56  of paint roller containment area  42 . Drainage channels  88  and  90  each have a first depth  96  relative to rolling surface area  40  and a second depth  98  relative to rolling surface area  40 . First depth  96  is positioned adjacent paint roller containment area  42  while second depth  98  is positioned adjacent workpiece paint containment area  38 . First depth  96  is greater than second depth  98 . 
     Elevated Strips 
     Rolling surface area  40  further has a plurality of elevated strips  100  positioned thereon. Elevated strips  100  act to enhance the distribution of workpiece paint  22  onto workpiece paint roller  26 . Each elevated strip  100  has a generally linear orientation  102 . It being understood that many variously in configuration are possible, including curved, wavy, zigzag and many others. Each elevated strip  100  has a directional orientation  104  which is offset relative to rolling orientation  78  of rolling surface area  40 . Each elevated strip  100  of rolling surface area  40  is preferably aligned with either drainage channel  88  or  90 . 
     Rollable paint trays having features of the present invention may have a fairly wide range of workpiece paint capacities. Preferable rollable paint trays will have a usage limit of one ( 1 ) US gallons, or slightly less. This capacity provides for the rollable paint tray to be small enough to be readily handled, stored and transported. 
     The user will have the ability to place a workpiece paint roller of a workpiece paint roller assembly relative to an applicable rollable paint tray and for the user to manipulate an elongated workpiece handle of the workpiece paint roller assembly to move the rollable paint tray about a surface. Preferably this will take the form of a specific structural configuration on the applicable rollable paint tray where the workpiece paint roller will make contact, such as a paint roller containment area. Ideally, the deployed paint roller containment area will accept placement of the workpiece paint roller during user controlled movement of the rollable paint tray as well as during times that the user merely desires to release the workpiece paint roller assembly in order to rest or to perform some other task where the workpiece paint roller assembly will remain and not fall. This resting may be accomplished by having structures on the body which contact some portion of the workpiece paint roller assembly or, more preferably, will involve some attachable assembly or piece which is the positioned on the body to provide this feature. This attachable nature provides for applicable rollable paint trays to be compact for shipping, transport and storage. 
     Rollable paint trays having features of the present invention will have some rolling members which will permit movement of the rollable paint tray across a generally flat surface. The art is rich with rolling members, including wheeled embodiments, which may be utilized to provide this required feature. In the most preferred embodiments the rolling members will be attachable relative to the body of such embodiments. Ideally such attachment to the body utilizes an attachment method which permits removal of the rolling members by the user and reattachment of the rolling members by the user. This arrangement is useful during storage or transport, but is also useful during cleaning of the applicable rollable paint tray. 
     It is preferred that any deployed rolling members be capable of permitting the applicable rollable paint tray to be turned easily and rolled in any desired direction. A class of rolling members conventionally known in the art provides this feature without requiring swiveling of the rolling member, and such rolling members may be utilized. Alternatively, rolling members conventionally known in the art swivel about a vertical axis and it is preferred that such rolling members be utilized for the present invention. 
     It is rare to have a sloped surface where painting is occurring and where it is desired to place the rollable paint tray. For those occasions it is a desire that applicable rollable paint trays having at least one rolling member with locking means to prevent rotation of the rolling member. This locking of a select wheel will prevent significant movement of the rollable paint tray. Various locking assemblies for applicable rolling members are known in the art and many of these may be utilized with the present invention. When deployed, it is preferred that the user be able to manipulate the locking of the rolling member and the unlocking of the rolling member while standing at the user accessible end of the respective rollable paint tray. Ideally such locking and unlocking will be performed while the user stands upright without requiring the user to bend, stoop or squat. This is easily provided for by having the structural components of the locking mechanism operational using a portion of the foot of the user, not shown in any of the views. Such foot operated locking mechanisms for rolling members are well known in the art and many of these may be utilized with the present invention. 
     In a less preferred embodiment of rollable paint tray the deployed rolling members may be permanently attached to the rollable paint tray. Similarly in a less preferred embodiment to that depicted in the drawings, the deployed rolling member may be attached, removably or permanently, to a separate structural component from the body of the rollable paint tray. This separate structural component would then be attached to, or positioned relative to, the body of an applicable rollable paint tray. 
     Rollable paint trays having features of the present invention can be fitted with a workpiece liner to contact the workpiece paint. Workpiece liners can protect many of the surfaces of the rollable paint tray to which is fitted from contact with, and accumulation thereon of, workpiece paint. A workpiece liner also will make cleanup of the rollable paint tray fitted with a workpiece liner much easier and far less time consuming. If desired the workpiece liner can be left on the rollable paint tray for extended periods of time spanning multiple painting sessions, including allowing remaining workpiece paint to dry. After an unacceptable accumulation of residual paint, or when changing to use another type or color of paint in the rollable paint tray, the used workpiece liner can be removed and a fresh liner installed. 
     The workpiece liner preferably will be configured to fit any of the various structural configurations of the specific embodiment of the rollable paint tray upon which it will be deployed. Rollable paint trays having features of the present invention will preferably be formed of a plastic within molds using an injection molding process. Due to the limitation that such rollable paint trays will have to be releasable from the mold during the injection molding process, workpiece liners can be formed which will slip into, and snugly fit, a respective embodiment of rollable paint tray. 
     Preferably the workpiece liner will fit within the rollable paint tray covering all surfaces upon which workpiece paint will routinely make contact. This will include the workpiece paint containment area and the paint roller containment area, including the opposing paint drainage channels, and the rolling surface area preferably positioned between these two areas. Preferably, the workpiece liner will overlap any of the radially disposed upper edges of the rollable paint tray. 
     The workpiece liner will be formed of a suitable paint impermeable material. The workpiece liner can be formed of a plastic sheet material in a vacuum molding process. Alternatively, the workpiece liner can be formed of a plastic using an injection molding process. Other applicable construction methods may be utilized. Both the vacuum molding and the injection molding options are capable of creating a relatively rigid, free standing, workpiece liner which will be easier to install and remove than a flexible workpiece liner. It is possible to form the workpiece liner from a much more pliant material having the desired shape and configuration. This type would have the advantage of being foldable for easy packaging, transport and storage. This type, while more time consuming to install and remove from applicable rollable paint trays than the rigid or semi-rigid type, would be easier to dispose of as it can more readily be gathered from the edges and may be gathered into a smaller area for subsequent disposal. 
     With either the rigid or semi-rigid workpiece liner or the more pliant foldable workpiece liner various securement methods can be utilized to ensure that the workpiece liner remains in a deployed orientation on the rollable paint tray. Preferably such securement methods utilize the upper radial edge of the workpiece liner, and corresponding contacting portions of the rollable paint tray, to secure the workpiece liner relative to the rollable paint tray. Of course, the simplest securement method involves taping of the workpiece liner to the exterior upper and/or side surfaces of the rollable paint tray. More complicated securing devices, such as pressure bearing clips, positioned on the rollable paint tray may be utilized. Yet another applicable option involves a series of snap type couplings having male and female portions. One set of members would be positioned on the rollable paint tray while corresponding, and opposing, members would be positioned on the workpiece liner. Once the workpiece liner is positioned relative to the rollable paint tray each set of the snap type couplings on the workpiece liner and the rollable paint tray would be fastened to secure the workpiece liner to the rollable paint tray. Other applicable securement methods, conventionally known in the art, can be used. 
     A lid, either completely removable or hinged, preferably will be provided with rollable paint trays having features of the present invention. This will provide for leaving the rollable paint tray for brief breaks from painting without undue concern that the condition of paint contained within the rollable paint tray will deteriorate. 
     With respect to the above description then, it is to be realized that the optimum dimensional relationships for the parts of the invention, to include variations in size, material, shape, form, function and manner of operation, assembly and use, are deemed readily apparent and obvious to one skilled in the art, and all equivalent relationships to those illustrated in the drawings and described in the specification are intended to be encompassed by the present invention. 
     Therefore, the foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.