The present invention relates to plaster taping apparatus and attachments therefor. In particular, although not exclusively, the present invention relates to hand tools and attachments for coating tape with plaster mix or the like and applying such coated tape to joints between plasterboard, drywall and the like.
Drywall taping tools are used to simultaneously apply tape and plaster mix or the like over drywall joints when finishing the wall surface. Such tools are commonly referred to as banjo taping machines, plaster taping banjos or mud boxes. Such taping tools typically comprise a compartment for storing the plaster mix, a holder for holding a roll of the tape and a blade or wheel arrangement comprising one or more wheels at a front end which presses the tape comprising the plaster mixture dispensed from the tool over the joint.
In some taping tools, the wheel arrangement comprises one or more serrated rollers which are limited to applying tape to a joint over a flat surface and cannot be used to access and apply the tape to internal corner joints. Therefore, a tradesman must apply the tape and plaster to the internal corner joints by hand which is awkward and laborious.
There have been many hand-held tools developed with angled surfaces or rollers for facilitating the smoothing of the plaster tape along an internal corner joint. However, these tools must be used as a secondary tool after the plaster tape has been applied to the wall, which is time consuming.
With reference to U.S. Pat. No. 8,955,573, the inventor for the present application addressed these issues by developing an attachment for connecting to taping tools, which facilitates the smoothing of the plaster tape along an internal corner joint. The attachment can be used with the same taping tool used for taping flat joints. Two attachments are still however required for applying tape to flat joints and to internal joints. Therefore, an attachment for applying tape to flat joints must be typically unscrewed and removed from the plaster taping device and the attachment for applying tape along an internal corner joint screwed into place.
Other plaster taping banjos are heavy and/or cumbersome to use and/or can be difficult to clean after use, which can impair the operation during subsequent use.
One object of the present disclosure is to provide an improved plaster taping apparatus and/or accessory therefor that addresses or at least ameliorates one or more of the aforementioned problems and/or provides a useful commercial alternative.
Generally, embodiments of the present invention relate to plaster taping apparatus and accessories therefor. In particular, embodiments of the present invention relate to a plaster taping apparatus comprising a removable attachment comprising a first wheel arrangement for applying tape to flat joints and a second wheel arrangement for applying tape to internal joints.
In one form, although not necessarily the broadest or only form, the present invention resides in a plaster taping apparatus comprising:
a compartment for holding plaster taping mix and receiving a supply of tape;
a removable attachment attachable to the plaster taping apparatus for applying the tape comprising the plaster taping mix exiting the compartment to a surface;
wherein the removable attachment comprises a first wheel arrangement for applying the tape comprising the plaster taping mix to flat joints and a second wheel arrangement for applying the tape comprising the plaster taping mix to internal joints.
In another form, although not necessarily the broadest form, the present invention resides in a removable attachment for a plaster taping apparatus, the attachment comprising:
a first wheel arrangement for applying tape to flat joints and a second wheel arrangement for applying tape to internal joints.
Preferably, the plaster taping apparatus comprises a tape holder for holding a supply of tape. Suitably, the tape holder is coupled to the compartment. Preferably, the tape holder comprises a hub for receiving a roll of tape and the hub is rotatably mounted on an axle.
Preferably, the compartment comprises a first aperture for receiving the tape and a second aperture for dispensing tape comprising the plaster taping mix.
Preferably, a size of the second aperture is adjustable to vary a thickness of plaster taping mix coating the tape.
Suitably, the size of the second aperture is adjustable by movement of a blade. Suitably, a position of the blade is adjustable within a predetermined range of positions. Suitably, the position of the blade is adjustable between a plurality of discrete predetermined positions.
Preferably, the size of the second aperture is adjustable by movement of an adjustment lever or dial coupled to the blade, wherein the adjustment lever or dial is accessible when the removable attachment is attached to the plaster taping apparatus.
Preferably, the plaster taping apparatus comprises a cover hingedly attached to one or more walls of the compartment for providing access to and for sealing the compartment.
Suitably, at least one of the one or more walls of the compartment and/or the cover comprises one or more handles for using and/or carrying the plaster taping apparatus.
Preferably, at least one of the one or more walls of the compartment comprises a clip arrangement for slidably receiving the removable attachment and securing the removable attachment in position relative to the plaster taping apparatus.
Preferably, the removable attachment comprises a body with the first wheel arrangement at or towards a first end of the body and the second wheel arrangement at or towards a second end of the body.
Suitably, the body comprises a mounting member which is slidably received in the clip arrangement of the plaster taping apparatus.
Suitably, the removable attachment is attached to the plaster taping apparatus in a first orientation for applying tape to flat joints and attached to the plaster taping apparatus in a second orientation for applying tape to internal joints. Suitably, the second orientation is 180 degrees relative to the first orientation.
Suitably, the body comprises a first elongate portion and a second elongate portion, wherein the first elongate portion is angled relative to the second elongate portion.
Preferably, the first wheel arrangement for applying tape to flat joints comprises an axle rotatably mounted at or towards the first end of the body, the axle supporting a central disc and a serrated disc on either side of the central disc and spaced apart therefrom, the serrated discs of the first wheel arrangement being of the same or a similar diameter as the central disc.
Preferably, the second wheel arrangement for applying tape to internal corner joints comprises an axle rotatably mounted at or towards the first end of the body, the axle supporting a central disc and a serrated disc on either side of the central disc and spaced apart therefrom, the serrated discs of the second wheel arrangement being of a smaller diameter than the central disc.
Preferably, a periphery of the central disc of the second wheel arrangement comprises a v-shaped profile.
Preferably, the serrated discs of the first and second wheel arrangements are mounted external of the body.
Preferably, the central discs of the first and second wheel arrangements are mounted at least partially internally of the body.
Further forms and/or features of the present invention will become apparent from the following detailed description.
In order that the invention may be readily understood and put into practical effect, reference will now be made to preferred embodiments of the present invention with reference to the accompanying drawings, wherein like reference numbers refer to identical elements. The drawings are provided by way of example only, wherein:
Skilled addressees will appreciate that elements in the drawings are illustrated for simplicity and clarity and have not necessarily been drawn to scale. For example, the relative dimensions of some of the elements in the drawings may be distorted to help improve understanding of embodiments of the present invention.
Embodiments of the present invention relate to plaster taping apparatus and accessories therefor. In particular, embodiments of the present invention relate to a plaster taping apparatus comprising a removable attachment comprising a first wheel arrangement for applying tape to flat joints and a second wheel arrangement for applying tape to internal joints such that only a single attachment is required to apply tape comprising plaster mix to both flat joints and internal joints.
With reference to
The plaster taping apparatus 10 comprises a body 20 having the cavity or compartment 12 for holding plaster taping mix or plaster taping mud. A cover 22 is hingedly attached to one or more walls of the compartment for providing access to and for sealing the compartment 12. In some embodiments, the cover 22 is hingedly attached to an inwardly curved lower wall 24 of the compartment 12 via two spaced apart hinges 26. The cover 22 is secured in a closed position via a hinged clip 28 which releasably engages with a ridge 30 extending from a sloping upper wall 32 of the compartment 12.
Sloping upper wall 32 extends from near the lower wall 24 and joins with a second outwardly curved upper wall 34. An inwardly curved end wall 36 extends from the second upper wall 34 toward the lower wall 24. A side wall 38 opposite the cover 22 abuts the lower wall 24, sloping upper wall 32, second upper wall 34 and curved end wall 36 thus forming the open compartment 12 that is sealed by the cover 22.
The plaster taping apparatus 10 comprises a tape holder 40 for holding a supply of tape, which is typically provided in the form of a roll of tape. According to some embodiments, the tape holder 40 is coupled to the compartment 12, for example via an extension of the body 20 in the form of a tape supporting arm 42. In preferred embodiments, the tape holder 40 comprises a hub 44 for receiving the roll of tape and the hub 44 is rotatably mounted on a hollow axle 46. The hub 44 is rotatably secured on the axle 46 via a fastener, such as a thread cap screw 48 which passes through the hollow axle 46, a washer 50 and a cap nut 52. The tape supporting arm 42 can comprise one or more webs or gussets 54 extending between the axle 46 and the curved end wall 36 and/or between the axle 46 and the perimeter of tape supporting arm 42 for added strength and integrity of the tape supporting arm 42.
The curved end wall 36 extends from the second upper wall 34 toward the lower wall 24, but does not join the lower wall 24 such that the compartment 12 comprises a first aperture 56 for receiving the tape from the tape holder 40. Sloping upper wall 32 extends to but does not join the lower wall 24 such that the compartment 12 comprises a second aperture 58 for dispensing the tape comprising the plaster taping mix. Tape is fed through the first aperture 56 into the compartment 12 and is placed adjacent or substantially adjacent the inner faces of the curved end wall 36, the second upper wall 34 and the sloping upper wall 32 and is fed out through the second aperture 58.
The plaster taping mix is typically of a pourable consistency and the desired volume of mix can be simply poured into the compartment 12 once the tape is at least approximately in place in the compartment 12. According to some embodiments, the compartment 12 can accommodate about 2.2 litres or about 2.5 kg of plaster taping mix, but the invention is not limited to this volume/amount. The flowable plaster taping mix pushes the tape against the inner faces of the curved end wall 36, the second upper wall 34 and the sloping upper wall 32 such that the tape is coated with the plaster taping mix when it exits the second aperture 58. The plaster taping mix coats the tape on a side facing the surface to which the tape will be applied.
A size of the second aperture 58 is adjustable to vary a thickness of the plaster taping mix coating the tape. According to some embodiments, the size of the second aperture 58 is adjustable by movement of a blade 60, shown in
In some embodiments, the blade 60 comprises an inclined edge 72 at each end such that the blade 60 is reversible. In such embodiments, the slot or cut-out 68 is provided centrally on the blade 60.
The adjustment lever or dial 62 is accessible when the removable attachment 14 is attached to the plaster taping apparatus 10. Therefore, the thickness of the plaster taping mix coating the tape can be adjusted when the removable attachment 14 is attached and the plaster taping apparatus 10 is in use.
With additional reference to
With particular reference to
The first seat 98 and the second seat 108 are separated by a space 110 of sufficient size to accommodate the aperture 66 in the surface of the sloping upper wall 32 and to accommodate the adjustment lever or dial 62. The adjustment lever or dial 62 extends laterally sufficiently such that it is easily accessible by a user when the removable attachment 14 is secured in position and retained by the clip arrangement 88. The surface of the sloping upper wall 32 can comprise a plurality of graduations or markings 112 indicating different predetermined positions for the adjustment lever or dial 62 which adjusts the thickness of plaster mix that will coat the tape.
With additional reference to
The mounting member 120 comprises a ridge 126 extending transversely along a periphery at each end thereof, transverse to inclined surfaces 122, 124. The ridges 126 and respective edges 128 of the mounting member 120 are slidingly received within respective recesses 92, 102 of the first and second hooks 90, 100 until a side of the mounting member 120 abuts end walls 96, 106. A portion of the inclined surface 122 of the mounting member 120 is supported by the first seat 98 and a portion of the inclined surface 124 is supported by the second seat 108. A height of the seats 98, 108 are such that they provide sufficient clearance between the surface of the sloping upper wall 32 and the inclined surfaces 122, 124 of the mounting member 120 to accommodate the adjustment lever or dial 62.
In preferred embodiments, the clip arrangement 88 includes a bump or projection 160 on the v-shaped side wall 109 at an apex thereof, as shown in
The removable attachment 14 is attached to the plaster taping apparatus 10 in a first orientation for applying tape to flat joints and is attached to the plaster taping apparatus in a second orientation for applying tape to internal joints. In preferred embodiments, it will be appreciated that the second orientation is 180 degrees relative to the first orientation. In other words, the attachment 14 is reversible and the orientation of attachment to the plaster taping apparatus 10 is selected according to the type of joint being taped—flat or a corner joint.
The body 114 of the removable attachment 14 comprises a first elongate portion 130 and a second elongate portion 132, wherein the first elongate portion 130 is angled relative to the second elongate portion 132. In a preferred embodiment, the angle between the first and second elongate portions 130, 132 is about 155 degrees.
The first wheel arrangement 16 for applying tape to flat joints comprises an axle 134 rotatably mounted at or towards the first end 116 of the body 114 through apertures 136 in arms 138. The axle 134 supports a central disc 140 and a serrated disc 142 on either side of the central disc 140 and spaced apart from central disc 140. The serrated discs 142 of the first wheel arrangement 16 are of the same or a similar diameter as the central disc 140 for the even application of tape coated with plaster mix to flat joints.
The second wheel arrangement 18 for applying tape to internal corner joints comprises an axle 144 rotatably mounted at or towards the second end 118 of the body 114 through apertures 146 in arms 148. The axle 144 supports a central disc 150 and a serrated disc 152 on either side of the central disc 150 and spaced apart from the central disc 150. The serrated discs 152 of the second wheel arrangement 18 are of a smaller diameter than the central disc 150. The serrated discs 152 of the second wheel arrangement 18 are of a larger diameter than the serrated discs 142 of the first wheel arrangement 16.
A periphery of the central disc 150 of the second wheel arrangement 18 comprises a v-shaped profile to facilitate application of tape coated in plaster taping mix to internal corner joints. The v-shaped profile comprises angled edges 153, which in some embodiments are at 90 degrees to each other. Serrated discs 152 are of a diameter to align with the angled edges 153.
The first and second wheel arrangements 16, 18 are rotatably mounted to the body 114 through apertures 136, 146 in arms 138, 148 via a respective threaded cap screw 154, cap nut 156 and one or more washers or spacers 158.
According to preferred embodiments, the serrated discs 142, 152 of the first and second wheel arrangements 16, 18 are mounted external of the body 114 and in particular outside the arms 138, 148. The central discs 140, 150 of the first and second wheel arrangements 16, 18 are mounted at least partially internally of the body 114 and in particular inside or between the arms 138, 148.
According to preferred embodiments, the body 20, compartment 12 and cover 22 of the plaster taping apparatus 10 are molded from plastics material, such as nylon and in particular glass filed nylon, such as nylon 30 GF+TPE 70A. Components of the plaster taping apparatus 10, such as the hub 44, blade 60, adjustment lever or dial 62 and adjustment pin 70, are also molded from plastics material, such as Acrylonitrile Butadiene Styrene (ABS). However, it will be appreciated that the present invention is not limited to these specific plastics materials and other plastics materials and other materials may also be suitable.
Hence, the plaster taping apparatus 10 and attachment according to embodiments of the present invention address or at least ameliorate at least some of the aforementioned problems of the prior art. For example, the removable attachment 14 provides users with a single attachment that can apply tape coated in plaster taping mix to flat joints and to internal corner joints simply by reversing the orientation of the attachment 14. The attachment 14 easily clips into, and is easily removed from the clip arrangement 88 of the plaster taping apparatus 10 via the mounting member 120 of the attachment 14. The corresponding inclined surfaces 122, 124 and ridges 126 of the mounting member 120 and the seats 98, 108, hooks 90, 100 and recesses 92, 102 of the clip arrangement 88 and the angled portions 130, 132 of the removable attachment 14, ensure that the removable attachment 14 is suitably mounted to the plaster taping apparatus 10 irrespective of whether tape is being applied to flat joints or to internal corner joints. The thickness of plaster mix applied to the tape can be accurately controlled via the blade 60 and the adjustment lever or dial 62. Also, the adjustment lever or dial 62 is easily accessible when the removable attachment 14 is attached to the plaster taping apparatus 10. The plaster taping apparatus 10 and the attachment 14 are lightweight and easy to use, which facilitate the efficient application of tape. The hinged cover 22 allows complete and easy access to the compartment 12 for accurate and easy positioning of the tape through the first and second apertures 56, 58 and within the compartment and for the addition of the plaster taping mix, which reduces spillages and wastage. The cover 22 is also detachable from compartment 12 for easy cleaning of the whole apparatus.
In this specification, the terms “comprise”, “comprises”, “comprising” or similar terms are intended to mean a non-exclusive inclusion, such that a system, method or apparatus that comprises a list of elements does not include those elements solely, but may well include other elements not listed.
The reference to any prior art in this specification is not, and should not be taken as, an acknowledgement or any form of suggestion that the prior art forms part of the common general knowledge.
Throughout the specification the aim has been to describe the preferred embodiments of the invention without limiting the invention to any one embodiment or specific collection of features. It is to be appreciated by those of skill in the art that various modifications and changes can be made in the particular embodiments exemplified without departing from the scope of the present invention.
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Number | Date | Country | |
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20190119931 A1 | Apr 2019 | US |