The present invention relates to paint applicators. The invention has particular relevance to paint applicators in the form of paint rollers, but it also has relevance to other types of applicators, for example pad or sponge applicators. Additionally, the applicators according to the invention may generally be used to apply other coating materials, for example stains, inks, preservers, and the like, and the term “paint” as used herein is intended to include such coating materials, and similar coating materials.
The invention seeks to provide an improved paint applicator. A first aspect of the invention provides a paint applicator, comprising:
(a) an applicator head for carrying an applicator attachment;
(b) a substantially rigid elongate support having a hollow interior for supplying paint to the applicator head;
(c) a pivot mechanism interconnecting the elongate support and the applicator head; and
(d) a flexible conduit interconnecting the hollow interior of the elongate support and the applicator head;
wherein the pivot mechanism includes a detent arranged such that it releasably secures the applicator head in any of a plurality of discrete preset orientations with respect to the elongate support.
In some embodiments of the invention, the applicator attachment is a roller applicator, but other types of applicator may be used, for example a pad or a sponge. For embodiments in which the applicator attachment is a roller applicator, the applicator head may comprise a hollow tubular support on which the applicator attachment may be rotatably mounted. The applicator head may include one or more (preferably a plurality of) apertures interconnecting the interior thereof with the applicator attachment, to supply paint to the applicator attachment.
The pivot mechanism may comprise first and second corresponding profiles, and the detent may comprise a profile arranged to engage with both the first and second profiles to prevent their rotation with respect to each other, thereby securing the applicator head in a said discrete preset orientation with respect to the elongate support. The detent may be arranged to allow the applicator head to be released from said discrete preset orientation with respect to the elongate support by being movable, for example along the axis of rotation of the first and second profiles, out of engagement with at least one of the first and second profiles. The detent is resiliently biased, for example by means of a spring, to engage with both the first and second profiles. The movement of the detent out of engagement with at least one of the first and second profiles may need to be against the resilient bias.
The first and second profiles may, for example, each comprise a plurality of circumferentially arranged protrusions and recesses (i.e. circumferentially around their axis of rotation). The discrete preset orientations of the applicator head with respect to the elongate support may correspond to relative orientations of the first and second profiles in which their respective protrusions and their respective recesses are substantially aligned. The detent may, for example, comprise one or more protrusions, but may comprise a plurality of circumferentially arranged protrusions and recesses, the recesses of the detent being arranged to engage with the protrusions of the first and second profiles, and the protrusions of the detent being arranged to engage with the recesses of the first and second profiles.
In some embodiments of the invention, the pivot mechanism is arranged such that it releasably secures the applicator head, or the roller applicator attachment, in an orientation substantially perpendicular to the elongate support, and in at least one orientation at an acute angle to the elongate support.
The flexible conduit may be arranged to flex to allow the applicator head (and the roller applicator attachment, if present) to adopt the plurality of discrete preset orientations with respect to the elongate support while maintaining the connection between the hollow interior of the elongate support and the applicator head.
The flexible conduit may be arranged such that it bypasses the pivot mechanism. The flexible conduit may be arranged such that it bypasses the pivot mechanism on an opposite side of the pivot mechanism to the acute angle that the applicator head or the roller applicator attachment may adopt with respect to the elongate support. This has been found to enable a compact and kink-free arrangement of the flexible conduit. For this reason, the applicator head or the roller applicator attachment may adopt an acute angle with respect to the elongate support in only one rotational direction (i.e. only to the left, or only to the right, of perpendicular).
A second aspect of the invention provides a paint applicator, comprising:
(a) an applicator head;
(b) a roller applicator attachment attached to the applicator head;
(c) a substantially rigid elongate support having a hollow interior for supplying paint to the applicator head;
(d) a pivot mechanism interconnecting the elongate support and the applicator head; and
(e) a flexible conduit interconnecting the hollow interior of the elongate support and the applicator head;
wherein the pivot mechanism is arranged such that it releasably secures the roller applicator attachment in an orientation substantially perpendicular to the elongate support, and in at least one orientation at an acute angle to the elongate support, and wherein the flexible conduit is arranged such that it bypasses the pivot mechanism substantially on an opposite side of the pivot mechanism to said acute angle.
It is to be understood that any feature of any aspect of the invention may be a feature of any other aspect of the invention.
The paint applicator according to the invention may further comprises a plunger, at least part of which is located within the hollow substantially rigid elongate support and is arranged to push paint from the hollow substantially rigid elongate support to the applicator head via the flexible conduit. The hollow substantially rigid elongate support may be in the form of a cylinder. In use, paint is drawn into the elongate hollow support through an inlet part of the paint applicator, by the plunger being pulled backwards in a direction away from the elongate hollow support, in the manner of a syringe. The inlet part may comprise a protrusion, for example a generally cylindrical protrusion, protruding with respect to the remainder of the paint applicator.
Some embodiments of the invention may include a supply part for attachment to a paint container, through which paint may be supplied to the paint applicator via the inlet part. The inlet part and the supply part may be arranged to fit together such that paint may be drawn through them and into the hollow elongate support. The inlet part and/or the supply part may include an indicator arranged to indicate when they are fully fitted together for use.
The supply part may comprise a receptacle part arranged to receive at least a portion of the inlet part therein when the inlet part and the supply part are fitted together in use. The portion of the inlet part may comprise the indicator, and the portion may be arranged such that, in use, its receipt in the receptacle part indicates that the inlet part and the supply part are fully fitted together for use. For example, the receipt of the indicator in the receptacle such that the indicator is substantially hidden from view, may indicate that the inlet part and the supply part are fully fitted together for use. The portion of the inlet part may comprise a cap having an opening extending therethrough.
Additionally or alternatively, the supply part may comprise an insertion part, at least a portion of which is arranged to be inserted into the inlet part when the inlet part and the supply part are fitted together in use. The portion of the insertion part may comprise the indicator, and the portion may be arranged such that, in use, its insertion into the inlet part indicates that the inlet part and the supply part are fully fitted together for use. For example, the insertion of the indicator into the inlet part such that the indicator is substantially hidden from view, may indicate that the inlet part and the supply part are fully fitted together for use.
The indicator may be visibly distinctive in relation to the remainder of the inlet part and/or the supply part. For example, the indicator may be brightly coloured and/or may comprise distinctive markings.
In some embodiments of the invention, the supply part includes a clip for attaching the supply part to a paint container. For example, the clip may be attached to, or may be part of, the receptacle part (if present).
Additionally or alternatively, the supply part may include a lid for attaching the supply part to a paint container and substantially closing the paint container. For example, the receptacle part may be attached to, or may be part of, the lid (if present).
The insertion part may be arranged to extend through the receptacle part. The insertion part and the receptacle part may be separate parts that are arranged to be connected together for use.
In some embodiments, the paint applicator according to the invention further comprises a stand for supporting the paint applicator on a horizontal surface, the stand may be arranged such that the applicator head is thereby spaced apart from the horizontal surface. At least part of the stand may be movable (e.g. rotatable) with respect to the remainder of the paint applicator, between an operational position in which it is arranged to provide support for the paint applicator, and a non-operational position.
At least part of the stand, in a said non-operational position, is located adjacent to the flexible conduit and/or the substantially rigid elongate support. The stand may be pivotably mounted to a part of the paint applicator.
The applicator head, the pivot mechanism and the flexible conduit together may comprise a sub-assembly that is releasably connected to the substantially rigid elongate support.
A third aspect of the invention provides a paint applicator, comprising:
(a) a hollow applicator head assembly for carrying an applicator attachment and for supplying paint thereto; and
(b) a substantially rigid elongate support attached to the applicator head assembly, comprising a hollow cylinder for holding paint, and a plunger, at least part of which is located within the hollow cylinder and arranged to push paint from the cylinder and into the applicator head;
wherein the applicator head assembly includes a closable aperture through which paint may be drawn into the cylinder, and the applicator head assembly and the cylinder include interconnecting parts by which the applicator head assembly is releasably attachable to the cylinder.
The third aspect of the invention has an advantage in that making the elongate hollow support removable from the applicator head assembly can enable the applicator head assembly and the front end (piston part) of the plunger to be cleaned more easily after use.
In some embodiments of the invention, the interconnecting parts by which the applicator head assembly is releasably attachable to the cylinder comprise a screw thread on the applicator head assembly or the cylinder, and a screw threaded rotatable collar on the cylinder or the applicator head assembly, respectively. A retaining part may be provided on an end region of the cylinder or the applicator head assembly, to retain the screw threaded rotatable collar thereon such that when the two screw threads are screwed together the cylinder and the applicator head assembly are securely attached to each other. The retaining part may be attached to the cylinder or the applicator head assembly by a solvent weld. The retaining part may comprise a flange part.
Embodiments of the invention will now be described, by way of example, with reference to the accompanying drawings, of which:
a) and 8(b) show the fitting together of a paint inlet part of the paint applicator of
a) and 9(b) are schematic illustrations also showing the fitting together of a paint inlet part of a paint applicator with a paint supply part attached to a paint container;
a), 10(b) and 10(c) are sectional views showing three embodiments of paint supply part for attachment to a paint container;
a) and 14(b) are part sectional illustrations showing a ratcheting feed mechanism of a plunger of the paint applicator of
Also shown in
The pivot mechanism 9 comprises a first profile 47 and a corresponding second profile 49. The first profile 47 is on a first part 51 of the applicator head assembly 7 which connects with the substantially rigid elongate cylinder 17, and the second profile 49 is on a second part 53 of the applicator head assembly 7 which carries the applicator head 23. Thus, rotation of the first and second parts 51 and 53 of the applicator head assembly 7 with respect to each other results in a rotation (or pivoting) of the applicator head with respect to the substantially rigid elongate cylinder 17. The first and second profiles 47 and 49 each comprise a plurality of protrusions 55 and recesses 57 circumferentially and radially inwardly arranged around the axis of rotation of the first and second parts 51 and 53. The first and second profiles 47 and 49 are substantially identical to each other, such that their respective protrusions 55 and their respective recesses 57 may be substantially aligned. A detent 59 comprises a part arranged to be located inside the first and second profiles 47 and 49 and to engage with both of the first and second profiles to prevent their rotation with respect to each other. The detent has a profile 60 comprising a plurality of protrusions 61 and recesses 63 circumferentially and radially outwardly arranged around the axis of rotation, the recesses 63 of the detent being arranged to engage with the protrusions 55 of the first and second profiles, and the protrusions 61 of the detent being arranged to engage with the recesses 57 of the first and second profiles.
The detent 59 is resiliently biased by means of a compression spring 65 (which itself is retained between washers 67 and 69) such that its profile 60 is normally engaged with both of the profiles 47 and 49 of the first and second parts 51 and 53, to prevent their relative rotation. In order to allow the first and second parts 51 and 53 to rotate relative to each other, and thus to allow the rotation of the applicator head 23 with respect to the elongate cylinder 17, the detent 59 must be pushed axially by the user against the resilient bias of the compression spring 65 (i.e. downwardly against the upper washer 67 as drawn in
Underneath the cap 73, the detent is retained in its normal resiliently biased position (in engagement with both first and second profiles 47 and 49) by means of a screw threaded fastener 76 and an associated washer 77 (which may alternatively be a single part) which are secured to an axially central part 79 (not shown in
The supply part 41 shown in
Alternatively, as shown in
Located adjacent to each opening 111 is a plurality (three, in the embodiment shown) of recesses 113. The recesses 113 are provided in a surface 115 oriented substantially perpendicular to the axis of rotation A-A of the stand 15. The axis of rotation A-A of the stand 15 is substantially perpendicular to the pivot axis P-P of the pivot mechanism 9 (see
The recesses 113 are arranged to provide two non-operational positions for the stand 15, in which the stand lies adjacent to (e.g. substantially flush with, or substantially parallel to) the main body of the paint applicator (i.e. the cylinder 17 and the applicator head assembly 7).
The recesses 113 are also arranged to provide an operational position for the stand 15, in which the stand projects from the main body of the paint applicator 1, e.g. in a direction substantially perpendicular to the axis of the cylinder 17, as shown in
a) and 14(b) are part sectional illustrations showing a ratcheting feed mechanism 117 for the plunger 19 of the paint applicator 1 of
Although exemplary embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents
Number | Date | Country | Kind |
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1016817.7 | Oct 2010 | GB | national |
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