Apparatus for applying coatings to planar and non-planar surfaces

Information

  • Patent Grant
  • 6272715
  • Patent Number
    6,272,715
  • Date Filed
    Friday, August 21, 1998
    25 years ago
  • Date Issued
    Tuesday, August 14, 2001
    22 years ago
Abstract
A replaceable coating applicating pad having, as the paint applicating medium, a velour fabric with a short nap is disclosed. In one embodiment, the pad includes a winged handle and a conforming pad which is suitable for large surfaces; in a second embodiment the pad is small with sharp corners for work in confined spaces; and in a third embodiment the pad is mounted on a sponge rubber-like handle for use on curved and other non-planar surfaces. A method of coating application is also disclosed.
Description




FIELD OF THE INVENTION




This invention relates generally to apparatus and methods for applying coatings to planar and non-planar surfaces, and specifically to pad-type applicators especially well adapted to apply thin coatings, such as stains and varnishes, to flat surfaces such as table tops, and contoured surfaces, such as chair spindles, which eliminates the use of rags or brushes and the mess and wastefulness inherent in the use of rags and brushes.




BACKGROUND OF THE INVENTION




Rags and brushes have, to the present time, been almost exclusively used for the applications of thin coatings. By “thin coatings” is meant coatings having generally lower viscosities than the viscosities characteristic of interior and exterior paints and specifically coating materials which may be described, for purposes of ready reference, as stains and varnishes.




In coating stains for example, the most commonly used procedure is to saturate a rag, or a portion of a rag, with the stain, apply the stain containing portion of the rag to the surface to be stained and thereafter wiping the just-applied stained surface with a second rag for the purposes of removing the excess and smoothing the coated layer of stain uniformly and evenly over the surface being treated so as to avoid a final blotchy or uneven appearance. An alternative method is to apply a stain with a brush, and thereafter wipe the applied stain with a rag. The purpose of the rag is, again, to wipe off excess stain just applied by the brush, and to smooth the coated layer of stain uniformly and evenly over the surface being treated to avoid a blotchy or uneven appearance. The brush-rag process is less efficacious than the two-rag system in several respects, one being that a brush may not apply the coating to a thick enough depth, particularly when a non-planar surface is being treated such as a chair spindle, due to the separation of the filaments during the application strokes. If insufficient coating is initially applied by a brush, the insufficiency usually cannot be remedied by the subsequent wipe of a rag. And a third generally inefficient method of applying stain, which is usually used only on large flat surfaces, is to flood coat the surface area to be stained with the stain and thereafter wipe off the excess with a rag or rags. Although the possibility of insufficiency application of stain may not be great in flood-coating, this process is very wasteful of stained material and exceedingly messy.




The applicator of choice for varnish is a brush, though a combination of a brush and a rag and even, in rare occasion, flood-coating has been used. The disadvantage of using a brush to apply varnish is that brush strokes are frequently seen in the final finish, particularly when the varnish has been applied by the occasional user, such as a do-it-yourself consumer who is not skilled with a brush. Loose filaments are often shed from the brush and, if not noticed and removed while the varnish is still fresh, remain as an unsightly discontinuity in an otherwise smooth surface. Lint from a rag produces a similar undesirable result, and bubbles frequently appear in the final surface. In addition, considerable effort must be made to apply varnish uniformly a task which is more difficult than application of conventional paints for example, since varnishes are almost uniformly stickier and harder to work than paint. Both foam and brush filament brushes are prone to pump air into the applied coating, thereby creating undesirable bubbles in the final surface, though foam brushes are more apt to do so than filament brushes.




In summary, all of the above-described applicators and application methods are messy and wasteful. They are messy in that the user's hands invariably come in contact with the coating and this is true even when varnish is brushed on since invariably the user must pick up a loosened filament or a piece of lint, which has come loose from the applicator during use, and alighted on the coated surface where it is not desired. Said methods are wasteful in that the rag used to apply such coatings, at the end of a coating session, are loaded with coating which is of no further use and must be thrown away along with the rag. The greater the number of small jobs separated by a time span in which the coating-filled rags are fully or partially dried, the more wasteful is the rag or foam brush application process. Further, job requirements often dictate that the operator be confined to only one type of applicator and that specific need-dictated applicator may be undesirable for reasons peculiar to the user, such as an aversion to messy operations, or cost. Brushes for example, are not generally suitable for rounded curved surfaces, such as the spindles in a chair back or a round chair leg. Thus, the user is forced to use a flood-coating or, more likely, the rag application system with respect, particularly, to stains and varnishes.




Thus, there is an existing need for a type of applicator and method of application which is not messy, is not wasteful of coating material, which is applicable to both planar and non-planar surfaces, and which always results in a neat, smooth, uniform depth of coating.




SUMMARY OF THE INVENTION




The invention is a stain and a varnish applicator which overcomes all the operational disadvantages of currently used applicators in that it does not create a mess during or after application, is not wasteful of the stain or varnish coating material (hereafter usually referred to simply as “coating material”), is usable on all planar and non-planar surfaces, lends itself to mass production fabrication methods, and is economically competitive with, and often less expensive for the consumer than, conventional rag and brush coating systems.




Specifically, the invention includes an applicator having a velour or velvet fabric with a directional filament which has the ability to reach all surface contours and to apply, spread evenly and remove excess coating material in a single operation and which does not bring the coating into contact with the user and wastes none or only a minimum amount of the coating material.




In one embodiment, which is particularly well-adapted for large surface area application, a pad of convenient size having said directional fabric is formed with edges which are upwardly angled with respect to the surface to be coated so that the applicator may be pulled over the surface to be coated as many times as necessary without scraping off the coating already applied, and, also, to feather finishing strokes so as to remove any undesirable bubbles which may have appeared before the final stroke.




In another embodiment, which is particularly well-adapted for non-planar surfaces, such as chair back spindles, a pad having said directional fabric is formed with an interior portion which is mounted to freely flex and thereby conform to the contour of a non-planar surface with a pressure which is substantially uniform over the non-planar area so that coating can be uniformly applied, the flexing action mimicking a human hand wrapping around or along the non-planar surfaces. The foregoing is accomplished without the creation of a drainage channel within the applicator which would permit the coating to run out.




In yet another embodiment which is particularly well-adapted for small spaces, such as the surfaces of individual slats or louvers in a louver blind or window sash trimming, a pad having said directional fabric is formed with a very thin, flat contour and acute angles which results in a configuration having all of the characteristics above-mentioned and, also, the ability to apply coatings evenly and efficiently in very small spaces such as on the surfaces of individual slats or louvers or on surfaces defined by acute angles.




Other features and advantages of the invention will become apparent from the following detailed description of the invention when taken in conjunction with the foregoing.











BRIEF DESCRIPTION OF THE DRAWING




The invention is illustrated more or less diagrammatically in the accompanying drawing in which





FIG. 1

is a perspective view of a large surface pad applicator;





FIG. 2

is a top, plan view of the large surface pad applicator of

FIG. 1

;





FIG. 3

is a left end view of the large surface pad applicator;





FIG. 4

is a right-end view of the large surface pad applicator;





FIG. 5

is a front elevation of the large surface pad applicator;





FIG. 6

is a section view taken substantially along the line


6





6


of

FIG. 2

;





FIG. 7

is a section view taken substantially along the line


7





7


of

FIG. 5

;





FIG. 8

is a top, plan view of the continuously formed pad prior to separation and trimming;





FIG. 9

is a top plan view of a replaceable large surface pad applicator of

FIG. 1

;





FIG. 10

is a right-end view of the applicator pad of

FIG. 9

;





FIG. 11

is a detail view to an enlarged scale of the leading edge of the applicator pad of

FIG. 9

illustrating the directionality of the fiber;





FIG. 12

is a perspective view of a second embodiment of the invention especially adapted for coating application to non-planar surfaces;





FIG. 13

is a side elevation view of the applicator of

FIG. 12

;





FIG. 14

is a top, plan view of the applicator of

FIG. 12

;





FIG. 15

is an end view of the applicator of

FIG. 12

;





FIG. 16

is a top, plan view of a third embodiment of the invention especially adapted for small, relatively inaccessible areas and acute angled junctions;





FIG. 17

is a side elevation of the third embodiment;





FIG. 18

is a view taken substantially along the line


18





18


with the pad removed and with portions omitted for clarity;





FIG. 19

is a bottom, plan view of the applicator of the third embodiment;





FIG. 20

is a section view taken substantially along the line


20





20


of

FIG. 16

;





FIG. 21

is a top, plan view of the pad of the third embodiment;





FIG. 22

is a side view of the pad of the third embodiment;





FIG. 23

is a detail view to an enlarged scale showing the directionality of the fabric of the pad of the third embodiment; and





FIG. 24

is a section view taken substantially along the line


24





24


of FIG.


16


.











DETAILED DESCRIPTION OF THE INVENTION




In the following description of the invention, like reference numerals will be used to refer to like or similar parts from Figure to Figure in the drawing.




The large surface pad applicator embodiment of the invention is indicated generally at


10


in FIG.


1


. The applicator includes a handle, indicated generally at


11


, to which a replacement pad, indicated generally at


12


, is assembled or dis-assembed as required. The handle


11


includes a centrally located finger-grip, indicated generally at


13


, having an upper wall


14


flanked by a right side wall


15


and left side wall


16


, and closed by front wall


17


and rear wall


18


. The side walls


17


and


18


curve outwardly at their front and rear ends, as best seen in

FIGS. 1

,


2


, and


7


, and meld into bottom sections


19


and


20


. A ledge


22


is formed at the front end of the applicator and another ledge


23


is formed at the rear end thereof. A front wall is indicated at


24


, and a rear wall at


25


. A pair of trim guides are indicated at


26


,


27


, on the front wall


24


. The trim guides enable a user to apply a coating to one surface and trim up to an adjacent surface in a uniform and straight line. A pair of stop dogs are indicated at


28


,


29


, on rear wall


25


. As best seen in

FIGS. 4

,


5


, and


6


, but also in

FIG. 3

, the stop dogs project downwardly beneath the plane


30


of the bottom of bottom sections


19


and


20


, a distance sufficient to preclude rearward sliding movement of the replaceable wear element after said wear element has been assembled to the handle, as will be described in further detail hereinafter.




The left side wall


33


extends upwardly from left bottom section


20


, and right side wall


34


extends upwardly from right bottom section


19


, all as best seen in FIG.


4


. The upper end of left side wall


33


rises to a height at which it is substantially flush with the front ledge


22


, and then bends downwardly and outwardly at


36


, and terminates in outwardly extending left flange


37


. In similar fashion, the upper end of right wall


34


rises to a height at which it is substantially flush with the front ledge


22


and then bends downwardly and outwardly at


38


, and terminates in outwardly extending right flange


39


. A left abutment wall is indicated at


40


, see

FIGS. 1

,


2


,


5


, and


7


, and a right abutment wall is indicated at


41


.




The replacement wear element of the pad applicator, here a fabric pad, is indicated generally at


45


in

FIGS. 9 and 10

. Fabric pad


45


includes a solid yet flexible backing member indicated generally at


46


which includes a flat, center section


47


and left and right side sections


48


and


49


respectively, best seen in

FIGS. 7 and 10

, which are inclined upwardly and outwardly from the center section


47


. Left side section


48


terminates in an upwardly and inwardly curved portion


50


which then extends downwardly and inwardly at


51


, and finally outwardly at


52


. Right pad section


49


is similarly contoured. As best seen in

FIG. 9

the front ends


54


,


55


, of left and right side sections


48


and


49


terminate well behind the front edge


56


of center section


47


. Preferably, the rear walls


58


,


59


of the left and right sections


48


,


49


terminate just short of rear edge


60


of center section


47


.




A directional fabric indicated generally at


62


is carried by and projects downwardly from the pad backing


46


. The directional fabric (hereafter usually simply called “fabric”) is a velour which is a closely napped velvet like fabric in the sense that velvet is understood to mean a synthetic fabric such as rayon, having a smooth, dense pile, and a plain back. The individual filaments


63


of the fabric may and usually will have a flexible fabric backing which is secured, as by an adhesive, to the pad backing


46


. Since the particular means by which the fabric is secured to the backing


46


s conventional, it is not further described. Since the backing


46


may advantageously be formed from stiff polyvinyl chloride which may be on the order of about 0.020 inches thick, it will be appreciated that the pad


45


, though a nominally rigid and self-sustaining structure, may be easily flexed by hand-applied pressure to assemble and dis-assemble a pad


45


from the handle


11


. From

FIG. 6

it will be noted that, after assembly of pad


45


to handle


11


, stop dogs


28


and


29


extend beneath the plane


30


of the bottom of the handle a distance sufficient to form a stop, or abutment, against which the backing


46


of pad


45


abuts, yet the stop dogs do not extend downwardly far enough to interfere with the functioning of the individual filaments


63


in fabric


62


.




Several types and forms of fabric are feasible. The fabric construction can be made using a number of commercially available processes such as weaving, sliver knitting, spring needle knitting, tufting, or continuous non-woven filament construction, or even other modes. The fabric pile can be made using a variety of materials, such as Acrylic, Modacrylic, cotton, wool polyester, other polyolofins, nylon, rayon, mohair, and others. The fabric pile heights may vary from 0.03 inches up to 1+ inch, though the latter will be used very infrequently. The pile density can vary from light to heavy as those terms are currently understood in the art.




In the currently most preferred embodiment of the invention the velour fabric has the following characteristics:




1. Woven construction has the benefits of better uniformity in pile, the ability to use finer, softer pile fibers, and it locks the pile fibers into the backing better thereby reducing or eliminating loose fibers from coming out during use.




2. Pile materials: Acrylic fibers have the ability to be fine and soft, resistant to both water base and solvent-based coatings. The color exists throughout the fabric when it was made, resulting in a color fast fabric when exposed to various solvent systems. Some synthetics and natural fibers, like cotton, are post-dyed only on the surface and do not become color fast when exposed to some solvent systems. Some fibers such as Modacrylic do not have solvent resistance to certain solvents such as acetone. Some fibers will change characteristics depending upon what solvent system they are exposed to such as wool which will lose its resiliency and matt down in water systems, but not in solvent systems. The coarseness of some fibers such as wool will not give as smooth a coating film as a fine fiber.




3. Pile height: A short pile will not carry as much coating material as a longer pile, but it will apply a smoother film. Preferably, a pile height of about 0.110 inches is used (including the 0.025 inches backing).




4. A relatively dense pile will allow the pad to pick up more stain or varnish which generally has a very low viscosity without running out and dripping. The higher the density, the smoother and more uniform the coating film will be. A typical density range should be on the order of about 15 to 25 ends per inch. Preferably 21 ends per inch are used.




To assemble pad


45


to the handle


11


, the original manufacturer, or the do-it-yourself user if a replacement pad is desired to be installed, merely pushes the curled portion


50


,


51


,


52


of the pad


45


over the flange


37


at the outer edge of the handle at a location such that the front ends


54


,


55


of the curled portions


50


,


51


,


52


, will lie just behind abutment walls


40


and


41


at the outside edge portions of handle


11


. After assembly, the abutment walls


40


,


41


will preclude movement of pad


46


in a forward direction relative to the handle


11


, and they align the directional filaments of the fabric with the trim guides


26


,


27


on the front of the handle. The stop dogs


28


,


29


will preclude movement of pad


46


in a rearward direction relative to handle


11


.




It will be noted that the handle


11


has a smooth contour and no undercuts. These features combined with its one piece design makes feasible mass production methods, and hence, low cost manufacture of the handle which can conveniently be done by injection molding.




The pad


45


is also extremely well-adapted for mass production techniques. By reference to

FIG. 8

it will be seen that pad


45


is preferably made in a continuous strip indicated generally at


66


. Score lines are indicated at


67


,


68


, said score lines marking the junctions between center section


47


and side sections


48


,


49


of the pad. Cut-off lines are indicated at


70


, the rear edge


60


of one pad being formed on a preceding pad and the front edge


66


of a trailing pad being formed as the continuous strip is cut along line


70


. Here, triangular sections


71


,


72


are cut off as waste when the continuous strip is cut off at


70


by sidecuts at


73


,


74


. It will be noted that the front corners of handle


11


are formed with cutback corners, see

FIG. 2

, and thus, the final shape of pad


45


will conform to the front outline of the handle. The cutback corners of the front edge of the handle and pad allow the user to coat a surface while trimming next to an adjacent surface and not wiping the coating on the adjacent surface.




It is essential however, that, for proper functioning, the pad, and hence the velour, always be so oriented that the working ends of the individual filaments always project forwardly from the nominal or front end of the applicator. Referring to

FIG. 11

for example, the filaments are so arranged as to project forwardly ahead of the front edge


56


of the center section.




The upwardly inclined side sections


48


,


49


of the pad, and the complementary configuration of side wall structures,


33


,


36


,


37


of the handle


11


, allow the pad during use to be pulled over the wood surface repeatedly without scraping the coating already applied off, much like the curled-up end of a toboggan rides up and over snow. The configuration also allows the user to roll the pad during the finishing stroke to feather off the stroke thereby eliminating any undesirable bubbles. The trim guides on the front edge of the handle permit the user to apply a stain or varnish to one surface and trim up to an adjacent surface in a uniform and straight line.




An alternative embodiment of the invention is demonstrated in

FIGS. 12-15

, this embodiment being especially well adapted to apply coating to non-planar surfaces, and particularly round surfaces such as, for example, the spindles in a chair back. It will be understood however, that the embodiment will also trim acceptably on flat surfaces so that, for example, a user who desires to coat an object such as a chair having round surfaces such as spindles, and flat surfaces such as a seat, need not change applicators to work from one coating-receiving surface to another.




The non-planar applicators, which for ease of reference will hereafter be referred to as a spindle pad, is indicated generally at


75


. The spindle pad includes a handle, indicated generally at


76


, and a fabric pad, indicated generally at


77


. In this instance, the fabric pad


77


is preferably integrally formed with the handle.




The handle


76


has an upwardly projecting hand-grip


78


which includes a top


79


, a left side wall


80


, and a right side wall


81


. A left wing or extension which is integral with handle


76


is indicated generally at


82


, and a similar right wing is indicated generally at


83


. The bottom surfaces of left and right extensions,


82


,


83


, lie in a common plane as best seen in

FIGS. 13 and 15

. Hand-grip


78


does not extend downwardly so as to lie in the plane of the bottoms of extensions


82


and


83


, as best seen in

FIGS. 12 and 15

. Rather, a void


84


is formed beneath the upper portion of hand-grip


78


and between the extensions


82


and


83


so that a configuration resembling a yoke is formed. The material from which the handle is formed is deformable and preferably it is soft, compressible and resilient; it may have the characteristics of sponge rubber. A suitable material is 2 pound cross-link polyethylene, bun cast.




The fabric pad


77


is similar in material and structure to the pad


45


of the embodiment of

FIGS. 1-11

. Thus, the fabric pad


77


includes a stiff, yet bendable backing


85


which carries a fabric


86


composed of individual filaments. It will be noted that in this embodiment the front corners of the pad


77


are not cut back, the pad thereby having a rectangular outline which coincides with the outline of the handle


76


. However, except for this structural difference, the material of fabric pad


77


, including the fabric which consists of the backing


85


and filament


86


, is preferably identical to the corresponding elements of the embodiment of

FIGS. 1-11

.




In use on the exterior surface of a round object, the fabric pad


77


, after being loaded with coating, is placed against to the object to be coated, and gentle hand pressure applied to the sides and wings, and particularly the wings, to cause the pad


77


to wrap around said object in snug, substantially even pressure engagement therewith. No sharp trough is formed which would permit coating carried by the directional fabric


86


to run out of the pad


75


. A user then merely slides the pad up, down and around the spindle to apply coating evenly at all locations.




By the same token, if it is desired to apply a coating to a depression or a trough area, the user need merely squeeze the left and right side walls


80


,


81


, and the fabric pad


77


will assume a convex configuration which will tend to adapt to the configuration of the trough area, such as would be found in crown molding. The angled front


87


and angled back


88


of the handle


76


allows the user to use the front edge of the pad to get into tight hard-to-reach places such as grooves on a spindle.




A further embodiment of the invention is shown in

FIGS. 16-24

, this embodiment being especially well-adapted to apply to coating in tight areas such as louvers or awkward areas such as window sash where a brush or rag either cannot effectively reach, or can only do so with considerable difficulty. It will be understood however, that this embodiment will also function on flat surfaces of a size which can be suitably treated by either of the previously described embodiments. However, the coating efficiency of the embodiment of

FIG. 16-24

will be considerably lower than the coating efficiency of the earlier embodiments in view of the generally smaller size of the applicator and the lack of inclined edges for feathering.




This embodiment, which for convenience of reference will be referred to as a louver pad, is indicated generally at


90


. The louver pad


90


includes a handle indicated generally at


91


and a fabric pad indicated generally at


92


; see particularly FIG.


21


.




Handle


91


includes a shank


93


which may have an aperture


94


at its tail or proximal end


95


for purposes of display at the point of sale. In this instance the shank


93


tapers outwardly toward the distal end


96


and it may have a contoured surface to facilitate grasping in the hands of the user, such surface being a series of projections, knurling, grooves, etc.




The head portion of the shank


93


is indicated generally at


97


. The head portion is a flat plate indicated generally at


98


which lies beneath the distal end of the shank


93


by reason of downwardly and forwardly extending rear offset


99


. The front end of plate


98


blends into an upwardly and forwardly extending front offset


100


which in turn terminates, at its upper edge, in a curved lip


101


. L-shaped flange members, indicated generally at


103


,


104


, project downwardly beneath the flat plate


98


as best seen in FIG.


18


. L-shaped flange


103


includes a downwardly extending portion


105


which terminates in an inwardly extending lip


106


, see particularly FIG.


24


. L-shaped flange


104


includes a downwardly extending portion


107


, see

FIG. 18

, which terminates in an inwardly extending lip


108


. The edges of the flat plate


98


which are aligned with the L-shaped flanges are cut away as at


109


,


110


. The fabric pad


92


, when viewed from the top as in

FIG. 21

, has a roughly trapezoidal shape with a base facing to the right. The fabric pad includes a rigid, plastic backing


112


which carries a directional fabric


113


of the type above described in connection with the embodiments of

FIGS. 1-15

. As best seen in

FIG. 23

, the individual filaments


114


of the fabric are oriented in a frontward or forward direction relative to the front edge


115


of the backing


112


. Cut-outs are indicated at


117


and


118


, said cut-outs being located opposite the lips


106


,


108


of the handle head. The distance between the long sides


119


,


120


of the cut-outs


117


,


118


, is slightly greater than the distance between the inner edges, one of which is indicated at


121


in

FIG. 24

, of the lips


106


,


108


. As a result, when the fabric ad


92


is assembled to the handle


91


, the edge portions of the fabric pad


92


at the edges of cut-outs


17


,


118


are slid into the space formed between the under side of flat plate


98


, and the top of lips


106


,


108


, as best seen in FIG.


24


. It will be noted that the filaments in the area of overlap between the flat plate


98


and the lips


106


,


108


, will be slightly skewed, but this will not affect the operation of the louver pad. The backing


112


may be made of any suitable material so long as it is rigid, yet flexible in thin sections. As in the embodiments of

FIGS. 1-11

, a suitable backing material is rigid polyvinyl chloride having a thickness on the order of about 0.020 inches.




To initially assemble a fabric pad


92


to the louver pad


90


which will usually occur at the factory, a pressure is exerted on the edges of the fabric pad


92


to bow it up to an extent such that the distance between the long sides


119


and


120


of the cut-outs


117


,


118


, is less than the distance between the edges


121


of the lips


106


,


108


. In this condition, the fabric pad


92


may be worked into the position of

FIGS. 16

,


17


,


19


,


20


, and


24


.




To remove a used pad, as when a new color is to be applied, the reverse procedure is followed. Thus, pressure is applied to the edge portion of the fabric pad


92


to cause the distance between long sides


119


and


120


of cut-outs


117


,


118


to be less than the distance between the edges


121


, and the fabric pad


92


is lifted out.




A particular advantage of this third embodiment of the invention is that the angled backsides of the pads permit the user to get into multi-plane corners or trim up to the glass around windows. The acute angles of the front end of fabric pad


92


are very adapt at placing coating in small, inaccessible areas.




Benefits of the above-described fabric tools maybe summarized as follows:




1. The high-density short locked-in pile (because of the woven construction) eliminates loose bristles from brushes or lint from rags that might come out because of the tacky nature of stains, varnish, bubbles, non-uniform application and brush strokes.




2. The fabric has the ability to pick up any excess stain or varnish when going over the wood a second time, thereby eliminating the need to wipe up excess coating with a rag. This eliminates the waste which occurs in the conventional method of flood-coating and wiping off the excess.




3. The first and third embodiments have a replaceable wear element which may be changed for different coatings such as color change, change from stain to varnish, and changing from solvent base to water base coatings.




4. The fabric holds considerable more coating than conventional or foam brushes.




5. The fabric meters out a more uniform discharge of coating than a brush or rag.




6. The fabric does not discharge lint like a rag, or lose brush filaments.




7. The fabric applies a more uniform coating and does not leave brush marks.




8. The fabric does not induce air into the coatings to produce undesirable bubbles as brushes and rags do.




9. The fabric performs two roles, namely, application of coating and, on subsequent passes, removal of excess coating, all in one operation.




10. The tools reduce the mess associated with brushes and rags in that they do not drip and do not require the user to get his hands into coatings when the excess is wiped up.




11. All pads and handles are solvent resistant and can be used in both solvent and water based stain, varnish, and other wood-finishing systems.




12. The large flat pad of the first embodiment allows trimming up to adjacent surfaces without getting the coating on the adjacent surface.




13. The large flat pad of the first embodiment has raised sides which prevent scraping off of the coating on subsequent passes and permits feathering during finishing strokes.




14. The pad of the third embodiment permits trimming of closely adjacent surfaces such as windows, and facilitates access to hard-to-reach places, like louver blinds, which brushes and rags either cannot achieve, or can achieve only with great difficulty.




15. The second embodiment simulates the human hand in that it bends around irregular surfaces such as spindles while providing a semi-rigid pad which will not crease sharply to discharge carried coating.




Although preferred embodiments of the invention have been illustrated and described, it will at once be apparent to those skilled in the art that variations may be made within the spirit and scope of the invention. Accordingly, it is intended that the scope of the invention be limited solely by the scope of the hereafter appended claims, when interpreted in light of the relevant prior art, and not by the foregoing description.



Claims
  • 1. A pad for use in a liquid coating applicator, the pad comprising:an elongate handle defining a major longitudinally extending dimension and a minor transversely extending dimension, the handle including a longitudinal extending central portion and first and second wings extending from opposite sides to the central portion to form first and second force application surfaces configured to receive a user's fingers and thumb, respectively, and spaced from one another by an elongate void longitudinally extending between the wings, wherein the wings pivot relative to the central portion, wherein the central portion and the first and second wings are integrally formed as a single unitary body, wherein the first and second wings and the central portion are compressible and resiliently flexible; and a flexible liquid applying medium coupled to an underside of the first and second wings and extending across the void, wherein the medium is configured to deform along a plurality of longitudinally extending axes into the void so as to wrap about an elongate object.
  • 2. The pad of claim 1, wherein the liquid applying medium deforms from a first integrally flat configuration to a second generally arcuate configuration.
  • 3. The pad of claim 2, wherein the medium extends in a plane across the void prior to deformation and wherein the first and second shoulders include surfaces extending substantially parallel to the plane.
  • 4. The pad of claim 1, wherein the flexible liquid applying medium includes:a flexible backing coupled to the first and second wings; and a liquid applying fabric coupled to the backing.
  • 5. The pad of claim 1, wherein the first and second wings and the central portion are made from a material having the characteristics of sponge rubber.
  • 6. The pad of claim 1, wherein the void has a semi-cylindrical shape.
  • 7. The pad of claim 1, wherein the first and second force application surfaces comprise first and second shoulders, respectively.
  • 8. The pad of claim 1, wherein the first and second wings and the central portion are compressible and resiliently flexible.
  • 9. The pad of claim 1, wherein the handle has first and second ends and wherein the first end upwardly slopes from the medium towards the second end.
  • 10. A liquid coating applicator comprising:an integrally formed compressible and resiliently flexible handle having a central portion extending along a longitudinal axis and first and second oppositely extending wings spaced from one another by an elongate longitudinally extending void between the wings; and a flexible liquid applying medium coupled to an underside of the first and second wings and extending across the void, wherein the medium is configured to deform along a plurality of axes into the void so as to wrap about an elongate object.
  • 11. The applicator of claim 10, wherein the handle has a transversely extending angled front, the angled front and the liquid applying medium forming a front edge for accessing hard-to-reach places.
  • 12. The applicator of claim 10, wherein the liquid applying medium has a generally rectangular shape.
  • 13. The applicator of claim 10, wherein the handle is made of a deformable, compressible, and resilient material having the characteristics of sponge rubber.
  • 14. The applicator of claim 10, wherein the first and second wings extend non-parallel from the central portion to form first and second shoulders, respectively, wherein the first and second shoulders separate a user's hand from the liquid applying medium.
  • 15. The applicator of claim 10 wherein the liquid applying medium includes:a flexible backing coupled to the first and second wings; and a directional liquid applying fabric coupled to the backing.
  • 16. The applicator of claim 10 wherein the longitudinally extending void is semi-cylindrical.
  • 17. The applicator of claim 10 wherein the handle is configured to extend between a user's hand and the void.
  • 18. A pad for use in a liquid coating applicator, the pad comprising:a handle including an upwardly projecting central portion having a top surface and first and second side walls, and first and second wings extending from the first and second side walls, respectively, to form first and second force application surfaces configured to receive a user's fingers and thumb, respectively, the first and second wings spaced from one another by an elongate void longitudinally extending between the wings and terminating along an upper boundary, wherein the void extends toward the top surface of the central portion, wherein the first and second force application surfaces extend above the upper boundary of the void, and wherein the wings pivot relative to the central portion; and a flexible liquid applying medium coupled to the first and second wings and extending across the void, wherein the medium is configured to deform along a plurality of longitudinally extending axes into the void so as to wrap about an elongate object.
  • 19. A pad for use in a liquid coating applicator, the pad comprising:a handle having first and second ends defining first and second transverse planes, respectively, the handle including a central portion and first and second wings extending from opposite sides of the central portion, respectively, to form first and second force application surfaces configured to receive a user's fingers and thumb, respectively, the first and second wings and the central portion longitudinally extending from the first end to the second end, and the first and second wings spaced from one another by an elongate void longitudinally extending between the wings, wherein the wings pivot relative to the central portion; and a flexible liquid applying medium coupled to an underside of the first and second wings and extending across the void, wherein the medium is configured to deform along a plurality of longitudinally extending axes into the void so as to wrap about an elongate object, wherein the first transverse plane is angled from the medium towards the second end.
  • 20. A pad for use in a liquid coating applicator, the pad comprising:an elongate handle defining a major longitudinally extending dimension and a minor transversely extending dimension, the handle including a longitudinal extending central portion and first and second wings extending from opposite sides to the central portion to form first and second force application surfaces configured to receive a user's fingers and thumb, respectively, and spaced from one another by an elongate void longitudinally extending between the wings, wherein the wings pivot relative to the central portion and wherein the void has a semi-cylindrical shape; and a flexible liquid applying medium bonded to an underside of the first and second wings and extending across the void, wherein the medium is configured to deform along a plurality of longitudinally extending axes into the void so as to wrap about an elongate object.
Parent Case Info

The present application is a divisional of U.S. patent application Ser. No. 08/514,489, Polzin et al., filed on Aug. 11, 1995, now U.S. Pat. No. 5,822,823.

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