U.S. patent number 3,757,990 [Application Number 05/056,922] was granted by the patent office on 1973-09-11 for disposable flexible liner for paint trays.
Invention is credited to Wallace R. Buth.
United States Patent |
3,757,990 |
Buth |
September 11, 1973 |
DISPOSABLE FLEXIBLE LINER FOR PAINT TRAYS
Abstract
Assembly including a flexible liner for protecting a paint tray
and mechanical means for removably attaching the flexible liner to
the tray. The mechanical means includes a plurality of clips for
clamping the liner to the walls of the tray, a resilient band or
drawstring for clamping the liner to the outside of the tray, and
adhesive means for attaching the liner to the tray. A disposable
bag is provided for disposing of used liners.
Inventors: |
Buth; Wallace R. (San
Francisco, CA) |
Family
ID: |
22007376 |
Appl.
No.: |
05/056,922 |
Filed: |
July 21, 1970 |
Current U.S.
Class: |
220/570; 206/223;
24/561; 248/101; 220/495.02; 220/495.11 |
Current CPC
Class: |
B44D
3/126 (20130101); Y10T 24/44906 (20150115) |
Current International
Class: |
B44D
3/12 (20060101); B65d 025/16 (); A44b 021/00 ();
B65b 067/12 () |
Field of
Search: |
;220/63,65,1T ;15/257.06
;248/101 ;24/255TC ;206/15.1 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Summer; Leonard
Claims
I claim:
1. In combination with a paint tray having a well defined by side
and bottom walls, a disposable protective liner removably disposed
in the tray to prevent paint in the well from directly contacting
the walls of the tray, and a plurality of clips clamping the liner
to the side walls, each of said clips having a body fabricated of
resilient material formed to include a large tab portion and a
small tab portion, a rounded connecting portion joining the tab
portions together along one edge thereof, and a beaded portion
extending along the junction of the large tab portion and the
rounded connecting portion.
2. In combination with a paint tray having a well defined by bottom
and side walls, said well being open at the top and adapted for
holding a volume of paint for application to the roller, a flexible
liner removably disposed in said well and covering said bottom and
side walls, said liner generally conforming to the contour of said
walls, and a plurality of clips engaging the liner at spaced apart
locations along the upper margin of the side walls and clamping
said liner to said walls, each of the clips including a pair of
generally planar tab portions, a resilient connecting portion
joining the tab portions together along one edge thereof, and an
elongated bead extending along the junction of the connecting
portion and one of the tab portions, the other of said tab portions
extending from the connecting portion at an angle on the order of
90.degree..
Description
BACKGROUND OF THE INVENTION
This invention pertains generally to painting supplies and more
particularly to a disposable flexible liner for protecting paint
containers of the type commonly known as paint trays.
In recent years, rollers have come into wide use for applying paint
and like coatings and coverings to large areas such as walls,
ceilings, floors and the like. These rollers generally include a
handle and a rotatably mounted cylindrical member which is covered
with a paint absorbent material. Paint is transferred from the
rollers to the surface to be painted by rolling the cylindrical
member across the surface. Because rollers are typically larger
than brushes and capable of holding more paint, they permit a given
area to be painted in substantially less time than if painted with
a brush. Also, rollers facilitate the application of paint in
substantially uniform layers.
Paint is generally applied to a roller from a shallow pan or tray.
The tray generally has a well for holding the paint, with one wall
of the well being elongated and inclined to permit rolling of the
roller in the tray. This rolling action assures even distribution
of the paint throughout the roller and provides means for wringing
excessive paint out of the roller before it is removed from the
tray.
A problem exists with the paint trays commonly used today. These
trays are typically used for relatively short periods of time,
following which they must be cleaned if they are to be reused. With
almost all paints and like coatings and coverings, including water
based paints, this cleaning is a messy and time consuming process.
In addition, it involves water pollution when water is used in the
cleaning and air pollution when solvents are used.
SUMMARY AND OBJECTS OF THE INVENTION
The present invention provides a disposable flexible liner kit
which enables paint trays to be used repeatedly without having to
be cleaned. This kit includes a flexible liner for covering the
walls of the tray and mechanical means for holding the liner to the
walls. In one embodiment, the mechanical means comprises a
plurality of plastic clips for clamping the liner to the tray
walls. In other embodiments, a resilient band, drawstring, and
adhesive means are provided for attaching the liner to the tray. A
non-porous disposable bag is provided for disposing of the liner
after it has been used in the paint tray.
It is in general an object of the present invention to provide a
protective flexible liner for paint trays.
Another object of the invention is to provide a protective liner
assembly for paint trays.
Another object of the invention is to provide an assembly of the
above character which includes a flexible liner and mechanical
means for holding the liner to the general contour of the paint
tray.
Another object of the invention is to provide a flexible liner of
the above character which is disposable.
Additional objects and features of the invention will be apparent
from the following description in which the preferred embodiment is
set forth in detail in conjunction with accompanying drawing.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is a perspective view of a paint tray with one embodiment of
a protective liner incorporating the present invention.
FIG. 2 is an enlarged cross-sectional view taken along line 2--2 in
FIG. 1.
FIG. 3 is an exploded perspective view of the paint tray and
protective liner illustrated in FIG. 1.
FIG. 4 is a cross-sectional view illustrating the present invention
with another type of paint tray.
FIG. 5 is a cross-sectional view illustrating the present invention
with yet another type of paint tray.
FIG. 6 is a perspective view illustrating one embodiment of a
disposable receptacle for disposing of a used liner.
FIG. 7 is a perspective view of one embodiment of a paint tray
liner incorporating the present invention and having a drawstring
for securing the liner to a paint tray.
FIG. 8 is a perspective view of one embodiment of a paint tray
liner incorporating the present invention and having a resilient
band for securing the liner to the tray.
FIG. 9 is a perspective view of one embodiment of a paint tray
liner incorporating the present invention and having an adhesive
material for securing the liner to the paint tray.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The protective flexible liner of the present invention is
illustrated in conjunction with a conventional paint tray 10. This
paint tray includes a bottom wall 11 and side walls 12-15 which
cooperate with the bottom wall to form a paint well 17.
The bottom wall 11 is formed to include a horizontal portion 11a
and an inclined portion 11b. The horizontal portion 11a forms the
bottom for the paint well, and inclined portion 11b provides a
surface upon which a paint roller can be rolled to assure even
distribution of paint without excessive dripping. The inclined
portion is formed to include a plurality of raised ribs 18 which
extend transversely thereof. These ribs facilitate the rolling of
the roller on the inclined portion, and they add structural
rigidity to the tray. The tray rests at one end upon the horizontal
portion of the bottom wall, and at the other end a pair of feet 19
are provided for maintaining the tray in a level position.
The side walls 12-15 extend vertically upward from the bottom wall
11. Each of these side walls is formed to include a beaded portion,
designated by the suffix "a", extending along its upper
extremity.
The protective liner includes a sheet of flexible material 21 which
can be almost any non-porous material. In the preferred embodiment,
this sheet is fabricated of polyethylene film and has a thickness
on the order of 0.002 inches. Other suitable materials for the
liner include plastic coated paper and metallic foil. The
protective liner is adapted to be placed in the paint well 17 in
such manner that it covers the bottom wall 11 and side walls 12-15
and adheres closely to the contour of these walls.
Means is provided for retaining the protective liner in and to the
tray. As illustrated in FIG. 1-3, this means includes a plurality
of clips 22 which clamp the liner to the upper portions of the
walls 12-15. In the preferred embodiment, the clips 22 are
fabricated of a resilient plastic material and are formed to
include a large tab portion 23, a small tab portion 24, and a
rounded bulb portion 26 intermediate the tab portions. The tab
portion 24 is disposed at an angle on the order of 90.degree. with
respect to the bulb portion 26 to facilitate placement of the clip
over the beaded portion 15a of the tray wall. The clip is formed to
include a bead portion 27 intermediate the large tab portion 23 and
the bulb portion 26. This bead portion cooperates with the beaded
portion 15a for retaining the clip on the tray wall. It will be
noted that the bulb portion of the clip extends through a generally
circular arc of somewhat less than 360.degree.. When the clip is in
its rest condition, that is when it is not mounted on a paint tray,
the spacing between the bead portion 27 in the junction of the bulb
portion and small tab portion is on the order of 0.030 inches.
Alternatively, if desired, the clips can be fabricated of other
resilient materials such as metal or wire.
Because of its unique construction, the clip 22 is also suitable
for use with paint trays of different constructions. Thus, in FIG.
4, the clip is shown mounted on a paint tray having a generally
flat lip 28 at the top of the side wall 13. With this type of wall,
the clip clamps the liner at the junction between the small tab
portion 24 and the bulb portion 26, the upper portion of the beam
portion 27, and the lower portion of the large tab portion 23.
Again, the small tab portion 24 facilities placement of the clip on
the wall, and the beaded portion 27 retains the clip on the wall.
In FIG. 5, the clip is illustrated in connection with a paint tray
having a double side wall 31 with an angular upper portion.
Means is provided for disposing of the liner after it has been
used. This means includes flexible, non-porous bag 32 fabricated of
a material such as thin plastic. A tie strip 33 is provided for
sealing the bag 32 to prevent leakage or dripping when a used liner
has been placed therein. Like the protective liner, the bag 32 is
disposable.
Operation and use of the flexible liner of the present invention
can be described briefly. The protective sheet 21 is placed in the
well 17 of the paint tray 10. It is smoothed by hand to conform to
the contour of the side and bottom walls. The edges of this liner
extend beyond the side walls of the tray, and the clips 22 are
snapped over the beaded portions of the side walls to retain the
flexible liner in place. When in place, the flexible liner conforms
closely to the contour of the bottom and side walls of the tray.
Paint is poured into the lined tray and applied to the paint roller
in the conventional manner. When the painting is completed, the
liner is removed from the tray and placed in the disposable bag 26.
The bag is sealed by means of the tie strip 33 and thrown away. In
the drawing, the disposable bag is shown being inserted in a
conventional trash receptacle 34. Once the protective liner has
been removed from the tray, the tray is ready to be put away or to
be used again without the need for cleaning. It is to be noted that
the clips 22 are reusable.
Alternative embodiments of the liner and means for attaching it to
the paint tray are illustrated in FIGS. 7-9. The embodiment shown
in FIG. 7 includes a drawstring 36 for attaching the liner to the
tray. In this embodiment, the liner 37 is formed to include passage
ways 38 for receiving the drawstring. These passage ways are
conveniently formed by folding the edge portions of the liner back
and seaming them to the remainder of the liner. The drawstring can
be fabricated of any conventional material such as cloth, string,
or wire. This embodiment is used by placing the central portion of
the liner in the well of the paint tray, with the drawstring and
edges of the liner outside the well. The drawstring is then pulled
tight, drawing the edges of the liner against the outer portion of
the tray, and the string is tied to retain the liner in place.
In the embodiment shown in FIG. 8, the liner 41 is formed to
include a tab portion 42 at one end thereof. This tab portion is
folded back and secured to the remainder of the liner to form a
passage way 43 through which a resilient band 44 extends. In the
preferred embodiment, the tab portion 42 is secured to the
remainder of the liner by seaming, and the resilient band is a
rubber band. In use, this liner is placed in the well of the tray,
with the tab portion 42 and edges of the liner extending beyond the
side walls of the tray. The rubber band is placed over the edges of
the liner to retain the liner on the tray.
The embodiment shown in FIG. 9 is generally similar to that shown
in FIG. 1, except that the edges of the liner 21 are attached to
the outer side walls of the tray by strips of an adhesive material
46, such as tape.
The components of the present invention are conveniently packaged
in a kit containing a plurality of flexible liners, a disposable
bag, and a means for attaching the liner to the tray. The kit can
also contain additional disposable bags for holding the roller or
paint brush during periods of non-use.
It is apparent from the foregoing that a new and improved
protective liner for paint trays has been provided. While only the
presently preferred embodiment of the invention has been disclosed,
as will be apparent to those familiar with the art, certain changes
and modifications can be made without departing from the scope of
the invention as defined by the following claims.
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