Patent Application
20190316288
The present invention relates to plastic clips and methods of constructing such plastic clips. The plastic clips are particularly intended to be useful as clothes-pegs for hanging articles on a washing line, although other applications such as pegging sailing lines are envisioned.
Clothes-pegs for hanging articles, such as clothes, from a washing line have conventionally had a wooden body with two spaced apart legs which wedge articles to the washing line. Another commonly used clothes-peg includes interlocking wooden or plastic jaws mounted on a coil spring which urges the jaws to their closed position for clamping the article on the washing line. Both of these conventional types of clothes-pegs, considering the large number normally required, are relatively expensive to produce and are also relatively bulky to store.
There have been attempts to decrease the size of clothes-pegs and simplify the manufacturing procedure. In particular, U.S. Pat. No. 4,876,771 (A) in the name of Givati provides a plastic clip constructed from a strip of elastic plastic material for acting as a clothes-peg. The strip of elastic plastic material has one or more openings extending therethrough for receiving washing line(s), and a slot extending from each opening to an edge of the strip. The slots have a zigzag configuration to define two or three jaws for gripping the article to be hung from the washing line. In particular, the jaws are roughened to define non-slip surfaces for gripping clothing positioned between the jaws in a friction fit arrangement. In use, the clothes and washing line etc. have to be fed all the way through the slot such that the washing line can be received in the opening. This means that the slot has to be sufficiently wide or elastic along its entire length. As a result, the friction fit arrangement between the jaws and the clothing is weak and can easily be disrupted, such as due to wind.
It is an object of the present invention to obviate or mitigate the problems of existing plastic clips for use as clothes-pegs.
Accordingly, the present invention provides a plastic clip comprising a strip of plastic material defining a tapered slot, the tapered slot extending from an inlet at the edge of the strip to an internal terminal position in the strip, the width of the tapered slot at the inlet being wider than the width of the tapered slot at the internal terminal position, the tapered slot providing a clamping surface for clamping articles positioned within the tapered slot and holding them in place.
Advantageously, the tapered slot of the present invention tapers from a wide inlet at the edge of the strip of plastic material to a narrow internal terminal position. As the articles, such as clothing positioned on a washing line, are fed through the inlet of the tapered slot, they are subject to a clamping force. The clamping force increases as the articles are advanced through the tapered slot towards to the internal terminal position. In use, articles will be advanced through the tapered slot until the clamping force is sufficient to hold them in place, and they cannot easily be advanced any further due to the decreasing width of the tapered slot. The clamping surface of the present invention is provided along the length of the tapered slot, such that articles can be clamped in place anywhere along the tapered slot. The width of the inlet and the internal terminal position, and the gradient of the taper can be appropriately selected such that a wide range of different sizes of articles can be received in the inlet and securely clamped in place at different positions along the tapered slot.
Preferably, the plastic material being a rigid plastic material.
Ideally, the plastic material being one of polyethylene, polypropylene, polyethylene terephthalate or a combination thereof.
Most preferably, the plastic material being polypropylene.
Advantageously, by using polypropylene, the plastic clip has a level of rigidity/springiness, thereby returning to its original shape more easily after objects have been inserted into the inlet of the tapered slot. It will be appreciated that the majority of grades of polypropylene which give the plastic clip the desired level of rigidity/springiness will be useable for the present plastic clip. In addition, the plastic material could be constructed from a copolymer of polypropylene, such as a random copolymer polypropylene or a block copolymer polypropylene.
Preferably, the width of the tapered slot continuously decreases from the inlet to the internal terminal position. Advantageously, the clamping force provided by the tapered slot continuously increases as the articles are fed through the tapered slot.
Ideally, the width of the tapered slot at the internal terminal position is greater than 0 mm, and is preferably between 1 and 5 mm, most preferably in the range of 2 to 4 mm.
Alternatively, the tapered slot tapers substantially to a point at the internal terminal position.
Ideally, the width of the tapered slot at the inlet is between 5 and 30 mm, and most preferably in the range of about 15 to about 25 mm.
Ideally, the tapered slot having a serpentine path from the inlet to the internal terminal position. Advantageously, the serpentine path, and in particular the one or more bends which make up the serpentine path, obstructs the path from the internal terminal position to the inlet, thereby increasing the difficulty with which the articles clamped between the clamping surface of the tapered slot can be inadvertently removed from the plastic clip.
Preferably, the serpentine path has at least two bends, or alternatively at least three bends, or alternatively still at least four bends.
Ideally, the strip is an elongate strip.
Preferably, the elongate strip comprises a first end portion, second end portion, and side surfaces extending between the first end portion and second end portion.
Ideally, the inlet being in one of the side surfaces.
Preferably, the first end portion defining an opening, and most preferably a circular opening. Advantageously, the opening can be threaded with a string or similar to allow it to be conveniently carried and manipulated. The opening could be used to conveniently tie and carry around multiple plastic clips. In addition, the opening can be used to securely attach the plastic clip, eg via string, to a washing line. Such an arrangement not only facilitates suspending a plurality of clips from the washing line to enable them to be conveniently used for hanging clothes on the line, but also prevents loss of the clips should they accidentally become detached from the washing line.
Ideally, the opening is spaced apart from and separate to the tapered slot.
Preferably, the strip is reinforced around the opening.
Preferably, the inlet being proximal to the first end portion.
Ideally, the internal terminal position being proximal to the second end portion.
Ideally, the second end portion comprising a tool implement. Example tool implements include a spoon, fork, knife and comb. Advantageously, the tool implement provides an additional level of functionality to the plastic clip and makes it particularly suited for outdoor pursuits such as camping and orienteering.
Preferably, the strip comprises one or more reinforcing sections.
Ideally, the outer edge of the strip is reinforced.
Preferably, the strip is of unitary construction.
In one arrangement, the plastic clip being adapted for hanging articles of clothing from a washing line, the inlet being sized to receive the articles and the washing line.
In another arrangement, the plastic clip being used for clipping to sailing lines. In this arrangement, the plastic clip, and in particular the inlet of the tapered section is substantially larger than the plastic clip for hanging articles of clothing.
In another arrangement, the strip defines two or more tapered slots, each tapered slot extending from an inlet at the edge of the strip to an internal terminal position in the strip, the width of the tapered slot at the inlet being wider than the width of the tapered slot at the internal terminal position, and each tapered slot providing a clamping surface for clamping articles positioned within the tapered slot and holding them in place.
Ideally, the two or more tapered slots are spaced longitudinally apart on the strip.
Preferably, the plastic clip is formed by injection moulding.
Alternatively, the plastic clip is formed using 3D printing.
Accordingly, the present invention further provides a method of producing a plastic clip by: producing a digital model of a strip of plastic material defining a tapered slot having a serpentine path extending from an inlet at the edge of the strip to an internal terminal position in the strip, the width of the tapered slot at the inlet being wider than the width of the tapered slot at the internal terminal position, the tapered slot providing a clamping surface for clamping articles positioned within the tapered slot and holding them in place, and using the digital model of the plastic clip for controlling a 3D printing apparatus to perform a 3D printing process to produce the plastic clip as specified by the digital model, thereby producing the plastic clip.
Preferably, the plastic material being a rigid plastic material.
Ideally, the plastic material being one of polyethylene, polypropylene, polyethylene terephthalate or a combination thereof.
Most preferably, the plastic material being polypropylene.
Preferably, the width of the tapered slot continuously decreases from the inlet to the internal terminal position.
Ideally, the width of the tapered slot at the internal terminal position is greater than 0 mm, and is preferably between 1 and 5 mm, most preferably in the range of 2 to 4 mm.
Alternatively, the tapered slot tapers substantially to a point at the internal terminal position.
Ideally, the width of the tapered slot at the inlet is between 5 and 30 mm, and most preferably in the range of about 15 to about 25 mm.
Ideally, the tapered slot having a serpentine path from the inlet to the internal terminal position.
Preferably, the serpentine path has at least two bends, or alternatively at least three bends, or alternatively still at least four bends.
Ideally, the strip is an elongate strip.
Preferably, the elongate strip comprises a first end portion, second end portion, and side surfaces extending between the first end portion and second end portion.
Ideally, the inlet being in one of the side surfaces.
Preferably, the first end portion defining an opening, and most preferably a circular opening.
Ideally, the opening is spaced apart from and separate to the tapered slot.
Preferably, the strip is reinforced around the opening.
Preferably, the inlet being proximal to the first end portion.
Ideally, the internal terminal position being proximal to the second end portion.
Ideally, the second end portion comprising a tool implement. Example tool implements include a spoon, fork, knife and comb.
Preferably, the strip comprises one or more reinforcing sections.
Ideally, the outer edge of the strip is reinforced.
Preferably, the strip is of unitary construction.
In one arrangement, the plastic clip being adapted for hanging articles of clothing from a washing line, the inlet being sized to receive the articles and the washing line.
In another arrangement, the plastic clip being used for clipping to sailing lines. In this arrangement, the plastic clip, and in particular the inlet of the tapered section is substantially larger than the plastic clip for hanging articles of clothing.
In another arrangement, the strip defines two or more tapered slots, each tapered slot extending from an inlet at the edge of the strip to an internal terminal position in the strip, the width of the tapered slot at the inlet being wider than the width of the tapered slot at the internal terminal position, and each tapered slot providing a clamping surface for clamping articles positioned within the tapered slot and holding them in place.
Ideally, the two or more tapered slots are spaced longitudinally apart on the strip.
Accordingly, the present invention further provides a computer-readable storage medium having computer executable instructions recorded thereon which, when executed by at least one processor, cause the at least one processor to perform operations for controlling a 3D printing apparatus to perform a 3D printing process to produce a plastic clip as specified by the computer executable instructions, thereby producing the plastic clip, the plastic clip comprising a strip of plastic material defining a tapered slot having a serpentine path extending from an inlet at the edge of the strip to an internal terminal position in the strip, the width of the tapered slot at the inlet being wider than the width of the tapered slot at the internal terminal position, the tapered slot providing a clamping surface for clamping articles positioned within the tapered slot and holding them in place.
Preferably, the plastic material being a rigid plastic material.
Ideally, the plastic material being one of polyethylene, polypropylene, polyethylene terephthalate or a combination thereof.
Most preferably, the plastic material being polypropylene.
Preferably, the width of the tapered slot continuously decreases from the inlet to the internal terminal position.
Ideally, the width of the tapered slot at the internal terminal position is greater than 0 mm, and is preferably between 1 and 5 mm, most preferably in the range of 2 to 4 mm.
Alternatively, the tapered slot tapers substantially to a point at the internal terminal position.
Ideally, the width of the tapered slot at the inlet is between 5 and 30 mm, and most preferably in the range of about 15 to about 25 mm.
Ideally, the tapered slot having a serpentine path from the inlet to the internal terminal position.
Preferably, the serpentine path has at least two bends, or alternatively at least three bends, or alternatively still at least four bends.
Ideally, the strip is an elongate strip.
Preferably, the elongate strip comprises a first end portion, second end portion, and side surfaces extending between the first end portion and second end portion.
Ideally, the inlet being in one of the side surfaces.
Preferably, the first end portion defining an opening, and most preferably a circular opening.
Ideally, the opening is spaced apart from and separate to the tapered slot.
Preferably, the strip is reinforced around the opening.
Preferably, the inlet being proximal to the first end portion.
Ideally, the internal terminal position being proximal to the second end portion.
Ideally, the second end portion comprising a tool implement. Example tool implements include a spoon, fork, knife and comb.
Preferably, the strip comprises one or more reinforcing sections.
Ideally, the outer edge of the strip is reinforced.
Preferably, the strip is of unitary construction.
In one arrangement, the plastic clip being adapted for hanging articles of clothing from a washing line, the inlet being sized to receive the articles and the washing line.
In another arrangement, the plastic clip being used for clipping to sailing lines. In this arrangement, the plastic clip, and in particular the inlet of the tapered section is substantially larger than the plastic clip for hanging articles of clothing.
In another arrangement, the strip defines two or more tapered slots, each tapered slot extending from an inlet at the edge of the strip to an internal terminal position in the strip, the width of the tapered slot at the inlet being wider than the width of the tapered slot at the internal terminal position, and each tapered slot providing a clamping surface for clamping articles positioned within the tapered slot and holding them in place.
Ideally, the two or more tapered slots are spaced longitudinally apart on the strip.
The skilled man will appreciate that all preferred or optional features of the invention described with reference to only some aspects or embodiments of the invention may be applied to all aspects of the invention.
It will be appreciated that optional features applicable to one aspect of the invention can be used in any combination, and in any number. Moreover, they can also be used with any of the other aspects of the invention in any combination and in any number. This includes, but is not limited to, the dependent claims from any claim being used as dependent claims for any other claim in the claims of this application.
The invention will now be described with reference to the accompanying drawings which shows by way of example only one embodiment of an apparatus in accordance with the invention.
In the drawings:
In
The plastic clip 1 comprises a strip of plastic material 2 defining a tapered slot 3 extending from an inlet 4 at the edge of the strip 2 to an internal terminal position 5 in the strip 2. The width of the tapered slot 3 at the inlet 4 is wider than the width of the tapered slot 3 at the internal terminal position 5. The tapered slot 3 provides a clamping surface for clamping articles positioned within the tapered slot 3 and holding them in place.
In use, articles, such as clothing positioned on a washing line, are fed through the inlet 4 of the tapered slot 3. The inlet 4 is wide enough to allow the articles to pass through relatively easily, but as they are advanced the width of the tapered slot 3 narrows, and as a result the clamping force provided by the tapered slot 3 increases. The articles will be advanced through the tapered slot 3 until the clamping force is sufficient to hold the articles in place, and the articles cannot easily be advanced any further due to the decreasing width of the tapered slot 3. As a result of the above construction, the entire length of the tapered slot 3 acts as a clamping surface such that articles can be clamped in place anywhere along the tapered slot 3. The width of the inlet 4 and the internal terminal position 5, and the gradient of the taper can be appropriately selected such that a wide range of different sizes of articles can be received in the inlet 4 and securely clamped in place at different positions along the tapered slot 3.
The width of the tapered slot 3 continuously decreases from the inlet 4 to the internal terminal position 5 so that the clamping force provided by the tapered slot 3 continuously increases as the articles are fed through the tapered slot 3. Of course other arrangements, such as where the tapered slot 3 intermittently decreases in width are envisioned.
Strip 2 is constructed from a rigid plastic material. Example plastic materials include polyethylene, polypropylene, polyethylene terephthalate, and it can be appreciated that the strip 2 can be constructed from a combination of the above materials. In most expected arrangements, the plastic material will be polypropylene or a copolymer thereof. Polypropylene provides the plastic clip 1 with a level of rigidity/springiness such that it can return to its original shape more easily after objects have been inserted into the inlet 4 of the tapered slot 3. Suitable grades of polypropylene can be selected as appropriate to give the plastic clip 1 the desired level of rigidity/springiness. In addition, copolymer of polypropylene, such as a random copolymer polypropylene or a block copolymer polypropylene, is envisioned. Larger or smaller weights of polypropylene can be used based on the intended size and application of the plastic clip 1.
Tapered slot 3 has a serpentine path from the inlet 4 to the internal terminal position 5. Within the serpentine path there are four bends 6a, 6b, 6c, 6d therein, although other numbers of bends such as one bend, two bends, three bends, or more than four bends are also envisioned. The serpentine path, and in particular the bends 6a, 6b, 6c, 6d which make up the serpentine path, obstructs the path from the internal terminal position 5 to the inlet 4, thereby increasing the difficulty with which the articles clamped between the clamping surface of the tapered slot 3 can be inadvertently removed from the plastic clip 1.
Strip 2 of the plastic clip 1 is an elongate strip 2 with a first end portion 7, second end portion 8, and side surfaces 9 extending between the first end portion 7 and second end portion 8. The inlet 4 is arranged in one of the side surfaces 9 and is proximal to the first end portion 7 while the internal terminal position 5 is proximal to the second end portion 8. Of course, in other arrangements the inlet 4 could be arranged in the first end portion 7 or the second end portion 8. In addition, the inlet 4 could be proximal to the second end portion 8 and the internal terminal position 5 could be proximal to the first end portion 7.
First end portion 7 defines an opening 10 that is circular, although other shapes such as elliptical are envisioned. The opening 10 is spaced apart from and separate to the tapered slot 3, and the strip 2 can be reinforced around the opening 10. The opening 10 can be threaded with a string to allow it to be conveniently carried and manipulated. The opening 10 could be used to conveniently tie and carry around multiple plastic clips 1. In addition, the opening 10 can be used to securely attach the plastic clip 1, eg via string, to a washing line.
Strip 2 can comprise one or more reinforcing sections, and in the arrangement shown in the figures the outer edge of the strip is reinforced. In particular, the first end portion 7, second end portion 8, and side surfaces 9 are reinforced such that they are of thicker construction than the main body of the strip 2. Of course, in other arrangements, only part or none of the strip 2 will be reinforced.
In some arrangements not shown in the figures, the second end portion 8 comprises a tool implement 11, such as a spoon, fork, knife or comb to provide the plastic clip 1 with an additional level of functionality. This arrangement would be expected to be useful for outdoor pursuits such as camping and orienteering where carrying space is limited and weight is desired to be kept to a minimum.
The width of the tapered slot at the inlet 4 is between 5 and 30 mm, and most likely in the range of about 15 to about 25 mm.
The width of the tapered slot 3 at the internal terminal position 5 is greater than 0 mm, more likely between 1 and 5 mm, most likely in the range of 2 to 4 mm. Although, in another expected arrangement not shown in the figures, the tapered slot 3 tapers substantially to a point at the internal terminal position 5.
In one expected arrangement, the plastic clip 1 is adapted for hanging articles of clothing on a washing line. In this arrangement, the inlet 4 is sized to receive articles of clothing and the washing line together. In another expected arrangement, the plastic clip 1 is used for clipping sailing lines. In this arrangement, the plastic clip 1, and in particular the inlet 4 of the tapered section 3 is expected to be substantially larger than the plastic clip 1 for hanging articles of clothing.
In one expected arrangement not shown in the figures, the strip 2 defines two or more tapered slots 3. Each tapered slot 3 extends from an inlet 4 at the edge of the strip 2 to an internal terminal position 5 in the strip 2. The width of the tapered slot 3 at the inlet 4 being wider than the width of the tapered slot 3 at the internal terminal position 5. Each tapered slot 3 provides a clamping surface for clamping articles positioned within the tapered slot and holding them in place. The two or more tapered slots 3 are spaced longitudinally apart on the strip 2.
The strip 2 is of unitary construction. The plastic clip 1 is formed by injection moulding, or alternatively, is formed using 3D printing.
3D printing is a process that may be used to produce objects, layer by layer, without moulds or dies. Typically, such processes include providing material (e.g. plastic) in the form of a powder or a wire, and, using a heat source such as a laser beam, electron beam or an electric, or plasma welding arc, melting an amount of that material and depositing the melted material (e.g. on a base plate of a work piece). Subsequent layers are then built up upon each preceding layer.
In
In
In step 401, the digital design model for the plastic clip 1 is specified and subsequently stored by a computer 301.
In step 402, the digital design model for the plastic clip 1 is processed into computer executable instructions.
In step 402, the one or more processors of the 3D printing apparatus perform operations for controlling the 3D printing apparatus 300 to perform a 3D printing process to produce the plastic clip 1 as specified by the digital model, thereby producing the plastic clip 1.
In order to provide additional context for various aspects of the invention,
Generally, however, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular data types. The operating environment is only one example of a suitable operating environment and is not intended to suggest any limitation as to the scope of use or functionality of the invention. Other well-known computer systems, environments, and/or configurations that may be suitable for use with the invention include but are not limited to, personal computers, hand-held or laptop devices, multiprocessor systems, microprocessor-based systems, programmable consumer electronics, network PCs, minicomputers, mainframe computers, distributed computing environments that include the above systems or devices, and the like.
With reference to
The computer system 500 includes a main memory 525, such as a random access memory or other dynamic storage device, is for storing instructions and information to be executed by the processing unit 505. The computer system 500 may also include a read only memory (ROM) or other static storage device coupled to the data bus 520 for storing static instructions and information to be executed by the CPU 505. The computer system 500 may also have a storage device 535, such as a solid state device, magnetic disc, or optical disc, coupled to the data bus 520 for persistently storing instructions and information.
The computer system 500 may also include an input device 515 coupled to the data bus 520 for communicating user commands or information to the programming unit 505. Input device 515 can comprise, for example, a pointing device such as a mouse, trackball, stylus, touch screen, keyboard, microphone, joystick, game pad and the like. The computer system 500 may also include a display 510, such as a liquid crystal display or active matrix display, coupled to the data bus 520 for conveying information to a user.
The computer system 500 may also comprise a communications adapter 540 coupled to the bus 520 to allow the computer system 520 to enable communications with a network 545 and/or other remote computers. Any type of networking configuration may be achieved using communications adapter 540 including, but not limited to, wired (e.g., via Ethernet), wireless (e.g., via Wi-Fi, Bluetooth, etc), pre-configured, ad-hoc, LAN, WAN, etc.
According to various implementations, aspects of the present invention can be achieved by the computer system 500 in response to the processing unit 505 executing an arrangement of instructions contained in main memory 525. Such instructions can be read into the main memory 525 from another computer-readable medium, such as storage device 535.
In relation to the detailed description of the different embodiments of the invention, it will be understood that one or more technical features of one embodiment can be used in combination with one or more technical features of any other embodiment where the transferred use of the one or more technical features would be immediately apparent to a person of ordinary skill in the art to carry out a similar function in a similar way on the other embodiment.
In the preceding discussion of the invention, unless stated to the contrary, the disclosure of alternative values for the upper or lower limit of the permitted range of a parameter, coupled with an indication that one of the said values is more highly preferred than the other, is to be construed as an implied statement that each intermediate value of said parameter, lying between the more preferred and the less preferred of said alternatives, is itself preferred to said less preferred value and also to each value lying between said less preferred value and said intermediate value.
The features disclosed in the foregoing description or the following drawings, expressed in their specific forms or in terms of a means for performing a disclosed function, or a method or a process of attaining the disclosed result, as appropriate, may separately, or in any combination of such features be utilised for realising the invention in diverse forms thereof.
| Number | Date | Country | Kind |
|---|---|---|---|
| 1611379.7 | Jun 2016 | GB | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2017/066322 | 6/30/2017 | WO | 00 |
