US20030186015A1 - Paint masking for corners - Google Patents

Abstract

A paint mask particularly adapted for masking comer areas of a demarcation zone to facilitate painting of an area of a workpiece disposed on the other side of the demarcation zone is formed of a thin, flexible sheet having opposite faces. The paint mask includes a first leg and a second leg that are generally rectangular in shape, and the legs intersect to form a right angle adapted for masking a corner and adjacent area. The bottom side of the paint mask which contacts the surface to be masked includes an adhesive for adhering the mask to the workpiece. The top side has release means for releasing stacked paint masks from each other.

Description

• The present invention relates to masking products for use by painters, and more specifically, to a corner masking product to mask the corner of a window or other surface to be protected during painting.[0001]
• While the present invention finds particular utility in connection with a masking product for use by painters and, accordingly, will be described in detail herein in connection with such use, those skilled in the art will recognize that the invention may have other applications and could be utilized, for example, for arts and crafts and other paint and design related purposes.[0002]
BACKGROUND OF THE INVENTION
• Masking products and other covers are widely used in modern day painting. In many instances, painting is conducted in conjunction with the use of masking products, paint masks, and other paint covers which facilitate protecting surfaces and areas from unwanted paint during the painting operation. The following patents are incorporated herein by reference as background information with regard to such masking products: U.S. Pat. No. 5,468,538 to Nameche; and, U.S. Pat. No. 5,441,769 to Ross.[0003]
• Wood, non-wood, metal and plastic materials are used to construct framed windows typically found in homes and other buildings to provide a mechanism which allows light and air to be received into the interior space of the buildings. In addition, windows provide an ornamental value to structures. In particular, windows are used to improve the aesthetic appearance of the interior and exterior walls of buildings. Although the number of different window arrangements is infinite, the majority of window configurations are rectilinear structures.[0004]
• Many common types of windows in use involve the use of a window frame with a number of individual panes of glass. The glass typically is separated by dividers commonly referred to as mullions. The mullion is a slender member which divides the panes of glass and provides structural support to the panes of glass in conjunction with the window frame. The panes of glass are positioned in association with the mullions and window frame by glass pointers. In addition, window glazing or putty compound is used along the perimeter of the window pane to further support the glass in the frame and also to prevent air and moisture from passing around the circumference of the window pane.[0005]
• Periodically, the window frames and associated mullions need repainting. Also, windows are painted to change the color and decor of interior and exterior surfaces of a room and/or building. Painting window frames and mullions requires the painter to very carefully apply paint to the frames and mullions while at the same time attempting to prevent the window panes from receiving paint. Typical solutions attempt to shield the window panes from the painter's brush and accompanying paint. These shields may take on the form of masking tape, which is cumbersome to apply in corners. Another approach is to not shield the window panes and allow the paint to inadvertently be applied to the window panes. This approach requires the painter to remove the unwanted paint with a razor blade. The resulting additional step of scraping adds time, effort, and clean up to an already laborious activity.[0006]
• One example of a paint masking kit for windows is shown in the aforementioned patent to Nameche and, generally, comprises a container having a plurality of reusable window balance covers having predetermined sizes and shapes for covering a header and balance portions of a window and a predetermined amount of a plastic sheet material for covering the glass portions of the window. The plastic sheet material for covering the glass portion is a transparent, vinylic sheet material provided in a roll or sheet form to be cut to fit any size and shape window glass. The plastic sheet material includes an adhesive on one side for removably attaching the material to the window glass before painting. This paint masking kit requires the user to measure the window dimensions, cut the sheet material, and install the cut sheet over the entire window glass area. The user must carefully cut straight edges and right angle corners without any margin for error. The adhesive on the entire bottom side makes handling and positioning difficult. Here, the effectiveness of the paint mask is dependent upon the time expended, accuracy, and skill of the user. This method is time consuming, cumbersome, and wasteful. Also, the paint mask does not conform or adjust to window applications with non-uniform or missing window glazing around the perimeter of the window pane.[0007]
• Another example of a paint masking kit for windows is shown in the aforementioned patent to Ross and, generally, comprises predetermined sized plastic sheets for covering an entire pane of glass secured to mullions of a window. The flexible material has an attractiveness for holding to glass. The sheet is sized for covering an entire pane of glass and is designed to seal against the window to resist dislodgement and to receive the overlapping paint while the mullion is painted. Ross's window masks are limited due to their predetermined sizes for applications with standard window sizes. In applications where the windows are of non-standard size, the window masks are not effective. In addition, the overlapping paint which adheres to the paint mask will remain on the paint mask and diminish the effectiveness of this masking technique with each subsequent application. Any clean-up of these reusable paint masks adds additional time and effort. Similarly, as described above, a paint mask of this type does not conform or adjust to window applications with non-uniform or missing window glazing around the perimeter of the window pane.[0008]
• Painting of floors, walls, and ceilings also involves painting of corners and demarcating an area to be painted from an area not to be painted. The aforementioned situations arise, for example, when painting baseboard molding, walls, and crown molding. In these situations, the molding, which is to be painted, must be demarcated from the floor and/or walls, which are to be protected. Demarcating the area not to be painted is critical in situations such as when painting the baseboard molding which typically runs adjacent the floor surface. Inadvertently painting the floor surface causes an additional problem due to the fact that paint cannot easily be removed from the floor surface. The references cited above are ineffective for such paint operations not involving windows.[0009]
SUMMARY OF THE INVENTION
• The present invention provides an improvement for paint masking of the type described which overcomes the above referred-to difficulties and others, and is easy to use. More particularly in this respect, a paint mask is provided which is particularly adapted for masking corner areas of a demarcation zone to facilitate painting of an area of a workpiece which is disposed on the other side of the demarcation zone. The paint mask is comprised of a thin, flexible sheet material (i.e. masking tape, paper, etc.) having top and bottom faces and, preferably, first and second legs that intersect to form a right angle. The paint mask sheet includes an adhesive on the bottom face which is adapted to engage and hold the mask sheet in the demarcation zone. The adhesive is pressure sensitive which allows for easy installation and removal from the surface without leaving any of the pressure-sensitive adhesive on the demarcation zone. Preferably, the paint mask sheet includes a non-adhesive area on the bottom face which allows the user to easily grasp, install, and remove the paint mask sheet from the window surface, floor surface, ceiling surface, etc. The paint mask includes flexible material which can be manipulated and oriented on the demarcation zone which allows adjusting of the mask to accommodate for variability in the edges and corners. Additionally, the handling and positioning of the paint mask can be accomplished with one hand by applying pressure to the top face once the paint mask has been positioned. The user's grip is subsequently removed from the non-adhesive top and bottom faces without disturbing the position of the paint mask. Subsequent to painting, the paint mask is pulled from, for example, the window pane and disposed of without any additional clean up.[0010]
• It is preferred to provide the top faces of the paint mask sheets with a release coating or paper so that a plurality of the paint mask sheets are stackable upon each other to form a pad, which is easy to store, carry, and handle, and from which individual paint mask sheets can readily be removed for application to the demarcation zone. Further, a pair of paint mask pads can be nestled so as to allow the pads to be efficiently packaged, displayed, and sold.[0011]
• Advantageously, the use of the paint mask during a painting operation allows the user to efficiently and effectively mask the corner of a window, floor, ceiling, wall, etc. to prevent paint from inadvertently being applied to the protected surface. The paint mask enables the user to mask the corner without utilizing other tools (i.e. knife or scissors), which increases the efficiency of the painting operation and results in higher quality, and enables the masking operation to be completed more quickly and efficiently than heretofore possible. In this respect, for example, once the paint masks are applied to the corners of a window pane, the user needs simply to apply straight pieces of masking tape therebetween to complete the masking operation.[0012]
• It is accordingly an outstanding object of the present invention to provide an improved paint mask which is economical to produce and use and which enables a user to complete a masking operation more efficiently and more economically than heretofore possible.[0013]
• Another object is the provision of a paint mask of the foregoing character that has an adhesive face which easily adheres to a window, floor, ceiling, wall, etc. to removably secure the paint mask in place.[0014]
• Still another object of the present invention is to provide a paint mask of the foregoing character including a non-adhesive zone for assisting the user in handling, installing, and removing the paint mask sheet.[0015]
• Yet another object of the invention is the provision of a paint mask which includes an adhesive zone that quickly and cleanly disengages from the window, floor, ceiling, wall, etc.[0016]
• A further object of the invention is the provision of a corner paint mask which is simple in construction, economical to manufacture and package, and easy to install and use.[0017]
• Still a further object is the provision of a paint mask of the foregoing character which includes a pressure-sensitive adhesive which can be cleanly and easily manually removed from the surface portion without leaving any of the layer of pressure-sensitive adhesive on a surface portion.[0018]
• Yet a further object is the provision of a paint mask of the foregoing character which allows the user to install the paint mask with a single hand.[0019]
• Another object is the provision of a paint mask of the foregoing character which adheres flatly to the glass pane with the edges of the paint mask sheet abutted against the putty, caulk, or wood trim holding the glass pane to the mullion, and which allows for a certain degree of adjustment to account for irregular edges along a window pane.[0020]
• A further object is the provision of a paint mask of the foregoing character which adheres flatly to a floor, ceiling, and/or wall with the edges of the paint mask sheet abutted against the edge of a baseboard molding, crown molding, etc., and which allows for a certain degree of adjustment to account for irregular edges along the line of demarcation.[0021]
BRIEF DESCRIPTION OF THE DRAWINGS
• The invention may take physical form in certain parts and arrangements of parts, preferred embodiments of which will be described in detail in the specification, and are illustrated in the accompanying drawings, which form a part hereof and wherein:[0022]
• FIG. 1 is a perspective view of a paint mask in accordance with the present invention installed in the corner of a window pane;[0023]
• FIG. 2 is a bottom plan view of the paint mask of FIG. 1;[0024]
• FIG. 3 is a perspective view of a paint mask pad formed in accordance with the present invention;[0025]
• FIG. 4 is a top view of a paint mask package;[0026]
• FIG. 5 is a perspective view showing an alternative paint mask installation in accordance with the present invention; and,[0027]
• FIG. 6 is a plan view showing another alternative paint mask installation in accordance with the present invention.[0028]
DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION
• Referring now in greater detail to the drawings, wherein the showings are for the purpose of illustrating preferred embodiments of the invention only, and not for the purpose of limiting the invention, FIG. 1 illustrates a[0029]paint mask6, in accordance with the present invention secured towindow pane15, as will be described more fully herein.Paint mask6, as shown in FIG. 1, is L-shaped and comprised of a first leg11 and asecond leg12. First leg11 includes anouter edge13, aninner edge16 and aterminal edge38, andsecond leg12 includes anouter edge14, aninner edge18 and aterminal edge40.Legs11 and12 intersect foredges13 and14 to form aright angle36. As shown in FIG. 1, the demarcation zone onpane15 is generally identified along the perimeter ofpaint mask6 as defined byedges13,14,40,18,16, and38 oflegs11 and12.Paint mask6 protects the corners ofwindow pane15 from inadvertently being painted as paint is applied towindow frame20 alongedges13 and14 ofmask6. In use, it will be appreciated that masking tape would be applied towindow pane15 alongwindow frame20 fromedges38 and40 ofmask6 to a similar mask in each of the corners offrame20.
• [0030]Paint mask6, as shown in FIG. 1, includes a non-adhesivetop face30 on first leg11 and a non-adhesivetop face32 onsecond leg12. As shown in FIG. 2, the bottom face ofpaint mask6 includes anadhesive zone22 on first leg11 and anadhesive zone24 onsecond leg12. The twoadhesive zones22 and24 are defined by a suitable pressure sensitive adhesive and engage the surface to be protected along the edges offrame20 corresponding toedges13 and14 ofmask6. The bottom face ofpaint mask6 also includes anon-adhesive zone26 on first leg11 and anon-adhesive zone28 onsecond leg12.Non-adhesive zones26 and28 do not adhere to the surface to be protected and allow the user to easily grasp, install, and removepaint mask6 from the work surface. In this respect, the user holdspaint mask6 with one hand by placing his/her thumb on one side ofpaint mask6 and his/her fingers on the opposing side. The thumb and fingers do not come into contact withadhesive zones22 and24, whereby the user can easily position and install paint mask into its desired orientation. Once in position, the user can release his/her grip frompaint mask6 without disturbing the positioning, because the finger(s) are not adhered to the adhesive portions ofpaint mask6. After the painting operation is completed, the user can easily removepaint mask6 by graspingnon-adhesive zones26 or28 and the respective opposing non-adhesivetop face30 or32 and pullingpaint mask6 frompane15.
• As will be appreciated from FIG. 3 of the drawings, and the foregoing description, a plurality of[0031]paint masks6 can be releasably stacked one on top of another to form apad42 of stacked paint masks.Adhesive zones22 and24 of first leg11 andsecond leg12, respectively, engage the precedingunderlying paint mask6 on its non-adhesive faces30 and32, respectively. Depending on the material of the substrate and the pressure sensitive adhesive, faces30 and32 may be provided with a release coating to facilitate peeling the adjacent masks apart. The formation of a paint mask pad allows the user to easily store, carry, handle, and separate individual paint mask sheets.Non-adhesive zones26 and28 of first leg11 andsecond leg12, respectively, allow the user to easily remove anindividual paint mask6 frompaint mask pad42 and applypaint mask6 to the demarcation zone. It will be appreciated that the user can grasp and remove eachpaint mask6 frompaint mask pad42 and installpaint mask6 upon the demarcation zone with one hand.
• In a preferred method of packaging,[0032]paint mask pads42 are oriented and nestled to form asingle package44 which comprises twopaint mask pads42. The nestling ofpaint mask pads42 inpackage44 allowspaint masks6 to be efficiently packaged, displayed, and sold. More particularly in this respect, as shown in FIG. 4 of the drawings, twopaint mask pads42 are rotated 180° relative to each other and are nestled together to form apaint mask package44 of two paint mask pads. It will be appreciated that the packaging of the twopaint mask pads42 in the aforementioned manner provides an economical and effective means for packaging and displaying the paint mask sheets.
• As will be appreciated from FIG. 5 of the drawings, and the foregoing description,[0033]paint mask6 can be utilized in a number of different applications. Specifically, FIG. 5 shows paintmask6 being utilized to protectfloor62 as the user paints the corner betweenbaseboards60, which are affixed towalls64. In this embodiment, the demarcation zone is generally defined as the area betweenfloor62 and baseboard moldings60. Similarly, FIG. 6 displays paintmask6 in yet another application. Specifically, paintmask6 is utilized to protectceiling70 as the user paints, for example, the corner between crown moldings72 which are affixed towalls64. As such, the demarcation zone is generally defined as the line betweenceiling70 and crown molding72. As mentioned above, it will be appreciated that straight sections of masking tape will be applied to extend from the ends ofmasks6 in the embodiments of FIGS. 5 and 6.
• While considerable emphasis has been placed herein on the structures and configuration of the preferred embodiments of the invention, it will be appreciated that other embodiments, as well as modifications of the embodiments disclosed herein, can be made without departing from the principles of the invention. In this respect, it will be appreciated that the paint mask can be used in other kinds of applications. Likewise, it will be appreciated that a paint mask according to the invention can be secured to the work surface in any number of different ways. These and other modifications of the preferred embodiments, as well as other embodiments of the invention (e.g. the packaging of the paint mask could be in the form of a roll or sheet), will be obvious and suggested to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the present invention and not as a limitation thereof.[0034]

Claims (14)

Having thus described the invention, it is claimed:

1. A paint mask for masking a corner area adjacent workpieces to be painted, comprising:

a thin, flexible sheet having opposite bottom and top faces, said sheet being L-shaped and having first and second legs that are generally rectangular in shape and at right angles to one another.

2. The paint mask as defined inclaim 1, wherein said sheet includes an adhesive on said bottom face.

3. The paint mask as defined inclaim 2, wherein said sheet includes a non-adhesive area on said bottom face.

4. The paint mask as defined inclaim 2, wherein said top face includes release means and a plurality of said paint mask sheets are stacked upon each other with the adhesive on one sheet engaging the top face of the underlying sheet.

5. The paint mask as defined inclaim 2, wherein a plurality of said paint mask sheets are stacked upon one another to form a paint mask pad.

6. The paint mask as defined inclaim 5, wherein said top surface of each sheet includes release means and said adhesive on the bottom face of each paint mask sheet releasably engages the top face of the adjacent underlying paint mask sheet.

7. The paint mask as defined inclaim 6, wherein each said sheet includes a non-adhesive area on said bottom face.

8. The paint mask as defined inclaim 6, wherein a pair of said paint mask pads are oriented relative to each other and nestled together to provide a package in which the L-shaped sheets are in a square configuration.

9. The paint mask as defined inclaim 1, wherein said first leg has a first width and said second leg has a second width equal to said first width.

10. A paint mask for masking a corner area adjacent workpieces to be painted, comprising:

a thin, flexible sheet having opposite bottom and top faces and a first and a second outer edge, said first and second outer edges intersecting at an angle of 90°.

11. The paint mask as defined inclaim 10, wherein said sheet includes a first and a second inner edge, said first and said second inner edges intersecting at an angle of 90°.

12. The paint mask as defined inclaim 11, wherein said sheet includes adhesive disposed on said bottom face extending from said outer edges toward said inner edges.

13. The paint mask as defined inclaim 12, wherein said sheet includes non-adhesive area on said bottom face between said adhesive and said inner edges.

14. A method for masking an area adjacent workpieces to be painted, said workpieces providing at least two opposite right angle corners therebetween, comprising the steps of:

providing a plurality of thin, flexible sheets each having opposite bottom and top and a first and a second outer edge intersecting at 90°;

adhering one of said sheets in the area of each of the opposite corners between the workpieces and adhering strips of masking tape in the area between the sheets in the opposite corners.

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