US3409929A

US3409929A - Paint roller spray shield and leveller

Info

Publication number: US3409929A
Application number: US682426A
Authority: US
Inventors: Fisher Sandor
Original assignee: Individual
Current assignee: Individual
Priority date: 1967-11-13
Filing date: 1967-11-13
Publication date: 1968-11-12
Anticipated expiration: 1985-11-12

Description

Nov. 12, 1968 s. FISHER 3,409,929

PAINT ROLLER SPRAY SHIELD AND LEVELLER Filed Nov. 13, 1967 2 Sheets-Sheet l INVENTOR. SANDOR FISHER Agent Nov. 12, 1968 s. FISHER PAINT ROLLER SPRAY SHIELD AND LEVELLER 2 Sheets-Sheet 2' Filed Nov. 15, 1967 INVENTOR. SANDOR FISHER Agent United States 3,409,929 PAINT ROLLER SPRAY SHIELD AND LEVELLER Sandor Fisher, 589 Palmerston Ave.,

Toronto, Ontario, Canada Filed Nov. 13, 1967, Ser. No. 682,426

8 Claims. (Cl. 15-248) ABSTRACT 'OF THE DISCLOSURE BACKGROUND OF THE INVENTION The present invention relates to a spray shield and paint-levelling accessory for paint roller applicators. The invention also relates to improved paint roller applicators incorporating such accessories.

The use of roller applicators for the application of paint or other liquid coating materials to surfaces has become widely accepted in recent years. Although such roller applicators have many advantages compared to the use of brushes particularly with respect to the speed of application and to the uniformity of the coating applied to a surface, they have several disadvantages.

One well known disadvantage of such roller applicators is that they have a tendency to spray paint in a rearward direction due to the effects of centrifugal force. It will be appreciated that this problem is most serious at high application rates or if the applicator roller is excessively heavily loaded with paint and particularly if the paint is one having a thin consistency.

A primary object of the present invention is to provide a spray shield accessory for use with a paint roller applicator, by the use of which the extent to which paint is sprayed in a rearward direction is substantially reduced.

A further object of the present invention is to provide a paint-levelling accessory for use with a paint roller applicator in order to provide improved uniformity of paint application to a surface being painted.

SUMMARY OF THE INVENTION These and other objects are achieved in accordance with the invention by the use of a spray shield and paintlevelling accessory which comprises (a) two co-operating and overlapping cover portions, each of which has an open front face defined by two side walls and an end wall, said cover portions being provided in their side walls with axially aligned openings for receiving the roller shaft of a paint applicator roller and about which roller shaft said cover portions are relatively rotatable,

(b) two paint spreading and levelling rollers, each of which is mounted in a separate one of said cover portions for rotation about an axis parallel to said roller shaft, said axes of said paint-spreading and levelling rollers being so disposed that the peripheral surfaces of said paint-spreading and levelling rollers project through said open front faces of said cover portions and (c) spring bias means by means of which said cover portions are normally disposed so that said paint applicator roller is normally disposed completely rearwardly of a plane defined by the forwardmost peripheral surfaces of said paint-spreading and levelling rollers except that, on the application of a forwardly directed force to said roller shaft, said cover portions are relatively rotated so that said paint applicator roller moves relatively forwardly against the action of said spring bias means at least to the extent that its forwardmost peripheral surface is disposed in said plane defined by said forwardmost periphatnt eral surfaces of said paint-spreading and levelling rollers.

In accordance with a preferred construction, an accessory in accordance with the invention is constructed with its cover portions interconnected across at least one corresponding pair of their side walls by a helical tension spring so as to provide a snap-action double-toggle type linkage therebetween whereby said cover portions are normally biased into one of two relative positions, namely either into said rearward position in which said paint applicator roller is disposed completely rearwardly' of said plane defined by the forwardmost peripheral surfaces of said paint-spreading and levelling rollers, or into a forward position in which the forwardmost peripheral surface of said paint applicator roller is disposed forwardly of said plane defined by said forwardmost peripheral surfaces of said paint-spreading and levelling rollers.

In accordance with yet another preferred constructional feature, one of said cover portions contains in at least one of its side walls a two-ended arcuate slot adapted to receive a co-operating pin provided on the corresponding side wall of the other of said cover portions, engagement of said pin with the ends of said slot determining limits for the relative rotation of said cover portions.

In order to facilitate application of paint or other coating liquid to the paint applicator roller, at least one of the cover portions can be provided with a releasable locking means for releasably securing said cover portion to a handle shaft of said paint roller applicator.

So as to facilitate insertion and removal of the paintspreading and levelling rollers for the purpose of cleaning and replacement, the latter are preferably removably mounted in the respective cover portions, for example, the paint spreading and levelling rollers can be provided with stub shafts which are received in pivot openings provided in the side walls of said cover portions, at least one of said pivot openings in each of said cover portions being in the form of an open-ended slot provided with a pivoted closure member.

In accordance with yet another preferred feature of the invention, an accessory according to the invention is usefully provided internally with a drip shield integral with one of said cover portions intermediate said paint applicator roller and the respective paint-spreading and levelling roller for the purpose of directing paint dripping downwardly from said paint applicator roller onto the respective paint-spreading and levelling roller.

As hereinbefore stated, the invention also embraces improved paint roller applicators which incorporate the aforementioned accessories. In its broadest scope, such an improved paint roller applicator comprises (a) a paint applicator roller carried by a roller shaft connected by a handle shaft to a handle, (b) two co-operating and overlapping cover portions, each of which has an open front face defined by two side walls and an end wall, said cover portions being provided in their side walls with axially aligned openings receiving said roller shaft and about which said cover portions are relatively rotatable (0) two paint-spreading and levelling rollers, each of which is mounted in a separate one of said cover portions for rotation about an axis parallel to said roller shaft, said axes of said paint-spreading and levelling rollers being so disposed that the peripheral surfaces of said paint-spreading and levelling rollers project through said open front faces of said cover portions, and ((1) spring bias means by means of which said cover portions are normally dis posed so that said paint applicator foller is normally disposed completely rearwardly of a plane defined by the forwardmost peripheral surfaces of said paint-spreading and levelling rollers except that, on the application of a forwardly directed force to said roller shaft, said cover portions are relatively rotated so that said paint applicator roller moves relatively forwardly against the action of BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described merely by way of illustration with reference to the accompanying drawings, in which:

' FIGURE 1 is a perspective view generally from the rear of an improved paint roller applicator incorporating a spray shield and paint-levelling accessory in accordance with' the present invention;

FIGURE 2 is a partial front perspective view of the paint roller applicator of FIGURE 1;

FIGURE 3 is a side elevation of the paint roller applicator of FIGURE 1 with the paint applicator roller in its forward position;

FIGURE 4 is a partial vertical section through the paint roller applicator of FIGURE 1 with the paint applicator roller in the paint-applying position; and

FIGURE 5 is a section similar to that of FIGURE 4 with the paint applicator roller in its rearward position.

DESCRIPTION OF THE PREFERRED EMBODIMENT In order to simplify the description, the face of the applicator which is applied to the surface to he painted is referred to herein and in the appended claims as the front surface and the direction perpendicularly from such face towards the surface to be painted will be considered to be the forward direction. Similarly, the opposite direction will be referred to as the rearward direction. It will be appreciated that the adoption of this terminology is in no way intended to introduce any restriction into the description of the claims.

Referring now to the drawings and particularly to FIG- URES 1 to 3 thereof, it will be seen that the paint roller applicator illustrated comprises a paint applicator roller generally indicated at mounted for free rotation on a roller shaft 12 integrally formed with a handle shaft 14 to which a handle 16 is secured in any convenient manner.

The paint applicator roller 10 may be of any suitable construction and may, for example, comprise a fleece-like sleeve 18 secured to a spirally wound cardboard tube former (not shown). In such a construction, the tube former is provided at each end with a male boss 20 and these bosses are provided with axial openings through which the roller shaft 12 passes. The roller shaft 12 is provided at its free end with a suitable clip 22 for retaining the roller 10 thereon and, at its opposite end, with a radial projection 24 for preventing undesirable axial movement of the roller 10 on the roller shaft 12.

It should here be noted that the paint roller applicator hereinbefore specifically described does not differ significantly from well known commercially successful paint roller applicators. One important difference concerns the relative lengths of the roller 10 and the shaft 12. As will be more readily understood as the description proceeds, the roller 10 will be shorter than in conventional paint roller applicators in order to permit the cover portions to be mounted on the roller shaft 12 in a manner now to be described.

It will further be seen that the paint roller. applicator is provided with two overlapping

cover portions

26 and 28. These

cover portions

26 and 28 are provided with axially aligned openings 30 in which the roller shaft 12 is received. It should here be noted that the openings 30 should be sufficiently large to permit free rotation of the

cover portions

26 and 28 about the roller shaft 12.

It should further be noted that the cover portion 26 is generally larger than the cover portion 28 and that these

cover portions

26 and 28 are dimensioned and shaped so that they overlap and are free to rotate relative to each other about roller shaft 12 without interfering with each other. Each of the

cover portions

26 and 28 comprises an open front face defined by two side walls 32 and an end wall 34 integrally formed with a rear wall Two paint-spreading and levelling rollers 38 and are also provided. Each of these is mounted in a separate one of said cover portions 26 and 28'respectively for free rotation about an axis generally parallel to the roller shaft 12. It should be noted that the

rollers

38 and 40 are disposed so that their peripheral surfaces project through the open front faces of the

cover portions

26 and 28 respectively. The preferred manner for

mountingthe rollers

38 and 40 will be described in greater detail hereinafter.

The paint-spreading and levelling

rollers

38 and 40 can be formed of any suitable material and, in the embodiment illustrated, each of these rollers comprises a spirally wound cardboard tube former (not shown) covered with a heavy-nap suede-like material.

As hereinbefore indicated, the

cover portions

26 and 28 are spring-biased so that the paint applicator roller 10 is normally disposed completely rearwardly of a plane PP' defined by the forwardmost peripheral surfaces of the paint-spreading and

levelling rollers

38 and 40, as particularly shown in FIGURES 2 and 5. If, however, a forwardly directed force is applied to the roller shaft 12, as will be explained in greater detail hereinafter, the

cover portions

26 and 28 are relatively rotated so that the paint applicator roller 10 moves relatively forwardly against the action of the spring bias means at least to the extent that its forwardmost peripheral surface is disposed in the plane P'-P defined by the forwardmost peripheral surfaces of the paint-spreading and

levelling rollers

38 and 40 as shown in FIGURE 4.

One suitable form of spring bias means comprises, as shown in the drawings, a helical tension spring 42 interconnecting the

cover portions

26 and 28. The spring 42 is stretched between studs 44 and 46 provided on the side walls 32 of the

cover portions

26 and 28 respectively. It will be appreciated that the spring 42 can serve to maintain the paint applicator roller 10 normally in its rearward position as shown in FIGURES 2 and 5.

In the preferred embodiment of the invention shown in the drawings, the

cover portions

26 and 28 are interconnected to provide a snap-action double-toggle type linkage therebetween, whereby the

cover portions

26 and 28 are normally biased into either of two relative positions, namely into the positions shown in FIGURES 3 and 5. This operation will be more fully described here inafter with reference to the use of the paint roller applicator.

Relative rotation of the two

cover portions

26 and 28 is restricted by the engagement of a pin 48 provided in at least one side wall 32 of the cover portion 26 with the two ends of a co-operating arcuate slot 50 provided in the corresponding wall 32 of the cover portion 28 and in which the pin 48 is free to move on relative rotation of the

cover portions

26 and 28.

Reference to FIGURES l and 3 will show that the cover portion 28 is provided with a releasable locking means for releasably securing the cover portion 28 to the handle shaft 14 of the paint roller applicator. In the embodiment illustrated, the releasable locking means comprises a pair of co-operating resilient tongues 52 which snap partially around the section 54 of the handle shaft 14.

As previously indicated, the paint-spreading and

levelling rollers

38 and 40 are preferably removable for the purpose of facilitating cleaning and replacement. One particularly convenient way of doing this is shown in the drawings. It will be noticed that each of the

rollers

38 and 40 is provided with axial stub shafts 56. The'first stub shaft 56 of each roller is received in a pivot opening in the side wall 32 of the respective cover portion and the second stub shaft 56 of each roller is received in an openended slot 58 in which it is removably retained by a pivoted closure member indicated at 60.

A drip shield 62 preferably integrally formed with the cover portion 26 is provided intermediate the paint applicator roller and the paint-spreading and levelling roller 38 for a purpose which will become more apparent as the specific description proceeds.

It should be borne in mind that the present invention embraces improved paint roller applicators as well as spray shield and paint-levelling accessories for use with existing paint roller applicators. For instance, the accessory comprising the

cover portions

26 and 28, the paintspreading and levelling

rollers

38 and 40 and the spring 42 may be used with an existing paint roller applicator. It will be appreciated that such an accessory is fitted to an existing paint roller applicator merely by passing the roller shaft of the existing applicator first through the holes 30 in one pair of side walls 32 of the

cover portions

26 and 28, then through the applicator roller of the existing applicator, and finally through the holes 30 in the second pair of side walls 32 of the

cover portions

26 and 28. A suitable clip 22 is then secured to the free end of the roller shaft 12 to prevent accidental disassembly.

In use, the

cover portions

26 and 28 are first snapped to the relative positions shown in FIGURE 3, being held in this position by the toggle action of the spring 42. The paint applicator roller 10 is now in its forward position, i.e. it is disposed forwardly of the plane PP (FIGURE 3) defined by the forwardmost peripheral surfaces of the paint-spreading and levelling

rollers

38 and 40. With the paint applicator rollers 10 in this forward position, paint may readily be applied thereto by rolling it in an appropriate container 64 containing a suitable depth of paint 66 (FIGURE 3). In order to prevent the

cover members

26 and 28 rotating about the roller shaft 12 and so coming into contact with the paint 66 in the container 64, the cover portions are preferably temporarily secured to the handle shaft 14 by means of the locking tongues 52 as previously described and as shown in FIGURE 3.

As soon as sufiicient paint has been picked up by the paint applicator roller 10, the applicator roller 10 is removed from the container 64 and the handle shaft 14 is released from the locking tongues 52. The

cover portions

26 and 28 are next snapped forwardly by pivoting them about the roller shaft 12 against the action of the spring 42 so that the paint applicator roller 10 is in its rearward position as shown in FIGURE 5. The paint roller applicator is then pressed against the surface to be painted, such as wall 68 (FIGURES 4 and 5). By the application of sufiicient forward force to the handle 16, the spring bias from the tension spring 42 is overcome and the

cover portions

26 and 28 rotate relative to each other until the paint applicator roller 10 comes into contact with the wall 68 as shown in FIGURE 4. Vertical movement of the applicator then effects the desired transfer of the paint from the roller 10 to the wall or surface 68 in the conventional manner.

It will readily be seen from FIGURE 4 that the paint spreading and levelling

rollers

38 and 40 are always in contact with the wall 68 and so serve to reduce irregularities in the paint film applied to the wall. This in turn ensures that a smoother and more complete coating of the surface 68 is obtained. It will also be appreciated that, by reducing the forward pressure on the handle 16, the

cover portions

26 and 28 may be allowed to rotate relatively to each other so that the paint applicator roller 10 is rearwardly retracted under the influence of the tension spring 42 so that only the paint-spreading and levelling

rollers

38 and 40 are in contact with the wall 68 (FIGURE 5). This is particularly useful, if sufficient paint has been applied to the surface 68 but it is still desired to effect further spreading and levelling by means of the

rollers

38 and 40.

62 from which it overflows onto the paint-spreading and levelling roller 38. It will be appreciated that the major proportion of such lost paint will originate from the paint applicator roller 10 and that the paint lost by dripping from the paint-spreading and levelling roller 38 will be negligible.

In practice, it has been found that, provided paint applicator roller 10 is not excessively loaded with paint, the amount of paint dripping from the lower paint-spreading and levelling roller 38 is negligible and that, with sensible utilization of the applicator, surfaces such as walls can be painted at a high speed with minimal risk of splashing adjacent areas to give an excellent surface finish.

It will be understood, of course, that modifications can be made in the preferred embodiments of the invention described and illustrated herein without departing from the scope and purview of the appended claims.

What I claim as new and desire to protect by Letters Patent of the United States is:

1. A spray shield and paint-levelling accessory for a paint roller applicator which comprises (a) two co-operating and overlapping cover portions, each of which has an open front face defined by two side walls and an end wall, said cover portions being provided in their side walls with axially aligned openings for receiving the roller shaft of a paint applicator roller and about which roller shaft said cover portions are relatively rotatable, (b) two paint-spreading and levelling rollers, each of which is mounted in a separate one of said cover portions for rotation about an axis parallel to said roller shaft, said axes of said paint-spreading and levelling rollers being so disposed that the peripheral surfaces of said paint-spreading and levelling rollers project through said open front faces of said cover portions and (c) spring bias means by means of which said cover portions are normally disposed so that said paint applicator roller is normally disposed completely rearwardly of a plane defined by the forwardmost peripheral surfaces of said paint-spreading and levellin rollers except that, on the application of a forwardly directed force to said roller shaft, said cover portions are relatively rotated so that said paint applicator roller moves relatively forwardly against the action of said spring bias means at least to the extent that its forwardmost peripheral surface is disposed in said plane defined by said forwardmost peripheral surfaces of said paint-spreading and leveling rollers.

2. A spray shield and paint-leveling accessory as claimed in claim 1 in which said cover portions are interconnected across at least one corresponding pair of their side walls by a helical tension spring so as to provide a snap-action double-toggle type linkage therebetween whereby said cover portions are normally biased into one of two relative positions, namely either into said rearward position in which said paint applicator roller is disposed completely rearwardly of said plane defined by the forwardmost peripheral surfaces of said paintspreading and levelling rollers, or into a forward position in which the forwardmost peripheral surface of said paint applicator roller is disposed forwardly of said plane defined by said forwardmost peripheral surfaces of said paint-spreading and levelling rollers.

3. A spray shield and paint-levelling accessory as claimed in claim 1 in which one of said cover portions contains in at least one of its side walls a two-ended arcuate slot adapted to receive a co-operating pin provided 7 on the corresponding side wall of the other of said cover portions, engagement of said pin with the ends of said slot determining limits for the relative rotation of said cover portions.

4. A spray shield and paint-levelling accessory as claimed in claim 2 in which one of said cover portions contains in at least one of its side walls a two-ended arcuate slot adopted to receive a co-operating pin provided on the corresponding side wall of the other of said cover portions, engagement of said pin with the ends of said slot determining limits for the relative rotation of said cover portions.

5. A spray shield and paint-levelling accessory as claimed in claim 2 in which at least one of said cover portions is provided with a releasable locking means for releasably securing said cover portion to a handle shaft of said paint roller applicator.

6. A spray shield and paint-levelling accessory as claimed in claim 1 in which said paint-spreading and levelling rollers are removably mounted in said cover portions.

7. A spray shield and paint-levellin accessory as claimed in claim 6 in which said paint-spreading and levelling rollers are provided with stub shafts which 8 are received in pivot openings in the side walls of said cover portions, at least one of said pivot openings in each of said cover portions being in the form of an open ended slot provided with a pivoted closure to facilitate insertion and removal of said paint-spreading and level ling rollers.

8. A spray shield and paint-levelling accessory as claimed in claim 1 in which a 'drip shield is internally provided integral with one. of said, cover portions intermediate said paint applicator roller and the respective paint-spreading and levelling roller for the purpose'of directing paint dripping downwardly from said paint' 574,401 5/1956 Belgium. 822,067 11/1951 Germany.

DANIEL BLUM; Primary Examiner. 7