CA2066032A1 - Material and operability optimizing paper clip - Google Patents
Material and operability optimizing paper clipInfo
- Publication number
- CA2066032A1 CA2066032A1 CA002066032A CA2066032A CA2066032A1 CA 2066032 A1 CA2066032 A1 CA 2066032A1 CA 002066032 A CA002066032 A CA 002066032A CA 2066032 A CA2066032 A CA 2066032A CA 2066032 A1 CA2066032 A1 CA 2066032A1
- Authority
- CA
- Canada
- Prior art keywords
- portions
- pair
- paper
- torsion
- inner clamping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42F—SHEETS TEMPORARILY ATTACHED TOGETHER; FILING APPLIANCES; FILE CARDS; INDEXING
- B42F1/00—Sheets temporarily attached together without perforating; Means therefor
- B42F1/02—Paper-clips or like fasteners
Landscapes
- Sheet Holders (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A paper clip is formed of a continuous band of material, and comprises an outer clamping frame, an inner clamping frame, and a pair of torsion members. The outer clamping frame is of a substantially triangular gross geometry and has a pair of transverse bridge members and outer clamping portions which extend from the respective transverse bridge members and converge at an outer reinforced tip. The inner clamping frame is also of a substantially triangular gross geometry and has inner clamping portions which converge at an inner reinforced tip. Each torsion member extends substantially perpendicularly from a respective transverse bridge member and continues into a respective contoured section. Each contoured section initially diverges in the direction of a respective outer clamping portion and then converges in a direction towards the inner reinforced tip and continues into a respective inner clamping portion.
A paper clip is formed of a continuous band of material, and comprises an outer clamping frame, an inner clamping frame, and a pair of torsion members. The outer clamping frame is of a substantially triangular gross geometry and has a pair of transverse bridge members and outer clamping portions which extend from the respective transverse bridge members and converge at an outer reinforced tip. The inner clamping frame is also of a substantially triangular gross geometry and has inner clamping portions which converge at an inner reinforced tip. Each torsion member extends substantially perpendicularly from a respective transverse bridge member and continues into a respective contoured section. Each contoured section initially diverges in the direction of a respective outer clamping portion and then converges in a direction towards the inner reinforced tip and continues into a respective inner clamping portion.
Description
- 2~6~32 ``'O ~/0~8~0 PCT/US9OtO5722 (1) Title: ~TERIAL AND OP~RABILITY OPTIMI~ING PAPER CLIP
Field of Invention The present invention relates generally tp the field of paper clips that are often made of plastic wherein an inner clamping member is displaced from the plane of outer clamping limbs in order to grip a volume o~ paper therebe~ween and relates, more particularly, to certain new and UseLUl improvements in such paper clips .
Brief Description of the Prior Art Figure 1 shows a prior art plastic paper clip of very simple design which operates by transverse bending of its inner clamping mber 10 in response to a volume of paper. The design limitations in this apparatus are readily apparent.
One reason that this apparatus is not satisfactorily operable is that the differences between the base/width dimensions of the inner clamping member 10 and the outer clamping limbs 12 are relatively great~ It is believed that this promotes instability~infirmness of the grip of the paper clip on the volume of paper.
Second, this apparatus employs a combination of triangular and rectangular geometry in the outer clamping limbs 12. This results in ~ waste of material with no corresponding gain in utility.
~-"~ionally, this paper clip wastes material at ~ip 14 and .rana-~erse bridg~ members 16. This waste of material is especially damaging to the operability thereof at transverse bridge mem~ers 16 where it is believed to render the paper clip critical: less flexible and to promote breakagè the~eof at or about pivot points 18 and 20.
Furt~er, the cross-secti~n of this paper clip is rectangular.
This inhibits ro~ation of the inner clampi~g portions 22 which occurs during stressing of the paper clip in order to accommodate a volume of paper. It is believed that the rectanqular cross-sectional shape causes a critical resistance to rotation and promotes breakage of the inner clamping portions 22 at or about pivot points 18.
Additionally, this paper clip tends to stand off from the volume o~ paper for the reason that it contains no means to maintain contact of the inner clamping member tip 24 with the volume o~ paper.
2~6~
``~9l/04870 PCT/U~90/~22 (2) Finally, the rectangular geomPtry of this paper clip imposes a severe limitation on the volume of paper that may be held relative to the size of thP paper clip. Since the maximum amount of paper that may be so held is absolutely determined by the distance between inner clamping portions 22 and outer clamping limbs 12 the triangular shape of Fig. 2 is optimal.
Figure 2 shows a prior ar~ plastic paper clip of improved design. Although this apparatus requires approximately the same amount of materi~l to manufacture and is only 20% wider at the base than the apparatus of Fig. 1 it has twice the paper holding capacity. This improved paper clip f atures a gap between the inne~- clamping limbs 30 and the outer clamping limbs 32 that is re` _,vely small~
As will be seen, the primary disadvantage of this paper clip lS due to its design which requires the use of a superfluity of material in order to achieve operability. This, in turn causes limitations on its operability and susceptibility to breakage.
In order to maintain contact of the inner clamping member 34 with the volume of paper the paper clip o~ FIG~ 2 employs inner clamping limbs 30 that axe not supported at one end 36. The unsupported ends 36 impact the volume of paper and transmit a longitudinally inward force to the supported ends 38 which assists the inner clamping member 34 in maintain~hg its grip on the volume of paper and in preventing the support member 40 from "standing-off" from the volume of paper.
However, this prior art scheme of using clamping limbs 30 tha~ not supported at their ends 36 is wasteful, limits ope~ y and at the same time creates a weakness that is vulnerable to snagging and to breakage.
It is wasteful because extra material must be used in order to support the clamping limbs 30 at a location 38 that is distant from the transverse bridge members 42. More importantly, the extra material limits operability by preventing the torsion members ~4 ~rom responding torsionally in a grip enhancing manner to the stress of accommodating a volume of paper. This is because the support member 40 contains more material, is more resistant to bending and therefore, during stress, e~fectively interrupts the transmission o~ the torsional forces formed on the torsion members 44 to the inner clamping limbs 30.
Because support member 40 interrupts the transmission of the torsional forces, junctures 46 are highly stressed and vulnerable to breakaqe. In addition, the supporte-d ends 38 are less flexible than the clamping limbs 30 themselves and are therefore, similarly susceptible to breakage.
2~603~
"'O ~0~8~ PC~/US90/05722 (3~
As will be seen, the preferred embodiment solves these problems by making t~e torsion members 44 continuous with the inner clamping limbs 30 and forming a substantially closed, reinforced, inner clamping frame (see Fig. 3). If the inner clamping limbs 30 are supported a~ a location that is relatively close to the transverse bridge members 42 rather ~han distant thereto, a surprising result occurs. Material is cofiserved and operability is increased. Thus the preferred embodiment accomplishes its object of saving material, resisting snagging and breaking and in assisting the inner clamping limbs ~0 to bend torsionally as well as longitudinally toward the volume of paper to give a better grip thereon.
Representative examples of known, prior art plastic paper clips are illustrated in drawing figures 1 and 2.
These known examples of prior art plastic paper clips are disadvantageous for several reasons. Principally, however th~y are disadvantageous because they do not employ a material/utility opti~izing design. This results in low operability, high cost and/or breakability problems.
It is, therefore, desirable to provide a plastic paper clip that neither imposes a trade-off between utility and economy nor breaks under normal use conditions.
In accordance with the present invention, an improved paper clip is provided which costs substantially less to manufacture than the prior art while offering superior operability and resistance to breakage.
Summary of Invention In general the present invention concerns a paper clip which is f~;ed of a continuous band of material, and comprises an outer cl_- ~ng frame, an inner clamping frame, and a pair of torsion members. The outer clamping frame is of a substantially triangular gross geometry and has a pair of transverse bridge members and outer clamping portions which extend from the respective trar verse bridge members and converge at an outer reinforced tip.
The ~nner clamping frame is also of a substantially triangular gross geometry and has inner clamping portions which converge at an inner reinforced tip. Each of the torsion members e~tends substantially perpendicularly from a respective transverse bridge member and continues into a respective contoured section. Each contoured section initially diverges in the direction of a respective outer clamping portion and then converges in a ~irection towards the inner reinforced tip and continues into the r~::pective inner clamping portion.--2 ~ 3 2 Ogl/04870 ' PCT/~S9~/~722 (4) Brief Description of the Drawings ~ igure 1 is a pictorial representa~ion of a prior art pap~rclip .
~ igure 2 is a pictorial representation of a ano~her prior art paper clip.
Figure 3 is a pictorial representation o~ ~he preferred embodiment of the present invention.
Figure 4 is a side view of the preferred embodiment as it would appear if it were holding a volume of paper.
Figure 5 is a rear view 5f the preferred embodiment as it would appear if it were holdinq a volume of paper.
Figure 6 is a frontal view of the preferred embodiment as it ~uld appear if it were holding a volume of paper.
Datailed Description of the Preferred Embodiment Fig 3 shows a paper-clip 49 which is constructed in accordance with the present invention and preferably mad~ ~rom plastic. The paper-clip is manu~actured in the form of a predominantly closed ~rame of substantially triangular configuration.
An inner clamping frame 50 that is continuous with inner torsion members 52 solves the problems of breakage, of excess use of material and of the interruption of the transmission of torsional force that are present in the prior art. Thus the presént invention actually uses less material than the prior art to achieve superior operability and resistance to breakage. This is both a surprising and remarkable result. When the paper clip 49 is in its stressed state torsional forces are thereby set up in torsion members 52 that act directly on an inner clamping frame 50 via contour areas 5~ and urge the contour areas in an inward di~ection and thus enhance the grip of the paper clip 49 on the volume of paper.
Consistent with the material minimizing object of the present invention, the paper clip 49 of the present embodiment is constructed of one continuous band of material. In addition, material that is needed to achieve an operable result is conserved b~ dispensing with the inner support member 40 of Fig. 2 entirely.
It is believed that this saving in material will result in a reduction in manufacturing cost of between 25 to 35%, a si~nificant ~igure.
2~6~32 `~O ~/04870 PCT/~S90/0~722 (5) In detail, the paper clip 49 has two outer clamping limbs 56 which converge in the center at a reinforced junction 57. The ends of the outer clamping limbs which are remote from the reinforced junction 57 merge into transyerse bridge members 58 which are likewise reinforced.
The torsion members 52 extend at right angles to the transverse bridge members 58 into the interior space formed in the paper-clip 49 between ~he outer clamping limbs 56 and the transverse bridge members 58. The transverse bridge members 58 are in alignment with each other when in the unstressed state and are separated by a slot 59 which is formed by the torsion members 52 in the center thereof, so that an inner clamping member 61 is comprised of two torsion members 52 which are initially, substantially parallel but which then alternately diverge and converge to form an inner clamping frame 50 which is reinforced at its tip 6~.
The ends of the two tQrsion members 64 directed towards the junction 57 form contoured sections 54 which initially diverge in the direction of the outer clamping limbs 56 and then converge, forming vertices 66 thereby, to maet at the tip 62 that is reinforced and therefore resistant to bending. T~e inner clamping frame 5a, formed thereby, is relatively long in the direction of inner clamping limbs f~ and, at-its widest is almost the ~ull width of the two transver: bridge members 58. Although the inner clamping frame 50 is resistant to bending, so that its shape is not impaired by the torsional forces acting upon the torsion members 52, it is still able to transmit the torsional forces in a ~rip enhancing manner. In other words, the inner clamping frame 50, forms a substantially closed V which ~ies in the same position within the ~ formed by the outer clamping limbs 56 and subtends a substantially identical angle.
Figs. 4 to 6 show the paper-clip 49 after it has been applied to a volume of paper. The outer clamping limbs 56 and the torsion members S2 thus act as combined torsion and bending srrings by virtue of the fact that they endeavor to return f~m their displaced position, shown in Fig. 5 to the position in which all parts of the paper-clip are in one plane. Thus, as may be seen in Fig. 6, the torsion members 52 are greatly torsiQned. The inner clamping frame 50 does not hinder the torsion, but rather allows the ~rip-enhancing transmission thereof in the region of the contoured sections 54. In addition, the contoured sections 54 are located in the vicinity of the edge 70 of the volume of paper (~ig.
4 ), so that "standing off" o~ the inner clamping frame 50 is also prevented. ~`~e longitudina` bending resistance of the clamping frame 50, thu achieves a gc.~ clamping effect on the top of the volume of paper and at th~ same time ensures that the outer clamping limbs 56 abut satisfactorily against the bottom uf the volume of paper.
Field of Invention The present invention relates generally tp the field of paper clips that are often made of plastic wherein an inner clamping member is displaced from the plane of outer clamping limbs in order to grip a volume o~ paper therebe~ween and relates, more particularly, to certain new and UseLUl improvements in such paper clips .
Brief Description of the Prior Art Figure 1 shows a prior art plastic paper clip of very simple design which operates by transverse bending of its inner clamping mber 10 in response to a volume of paper. The design limitations in this apparatus are readily apparent.
One reason that this apparatus is not satisfactorily operable is that the differences between the base/width dimensions of the inner clamping member 10 and the outer clamping limbs 12 are relatively great~ It is believed that this promotes instability~infirmness of the grip of the paper clip on the volume of paper.
Second, this apparatus employs a combination of triangular and rectangular geometry in the outer clamping limbs 12. This results in ~ waste of material with no corresponding gain in utility.
~-"~ionally, this paper clip wastes material at ~ip 14 and .rana-~erse bridg~ members 16. This waste of material is especially damaging to the operability thereof at transverse bridge mem~ers 16 where it is believed to render the paper clip critical: less flexible and to promote breakagè the~eof at or about pivot points 18 and 20.
Furt~er, the cross-secti~n of this paper clip is rectangular.
This inhibits ro~ation of the inner clampi~g portions 22 which occurs during stressing of the paper clip in order to accommodate a volume of paper. It is believed that the rectanqular cross-sectional shape causes a critical resistance to rotation and promotes breakage of the inner clamping portions 22 at or about pivot points 18.
Additionally, this paper clip tends to stand off from the volume o~ paper for the reason that it contains no means to maintain contact of the inner clamping member tip 24 with the volume o~ paper.
2~6~
``~9l/04870 PCT/U~90/~22 (2) Finally, the rectangular geomPtry of this paper clip imposes a severe limitation on the volume of paper that may be held relative to the size of thP paper clip. Since the maximum amount of paper that may be so held is absolutely determined by the distance between inner clamping portions 22 and outer clamping limbs 12 the triangular shape of Fig. 2 is optimal.
Figure 2 shows a prior ar~ plastic paper clip of improved design. Although this apparatus requires approximately the same amount of materi~l to manufacture and is only 20% wider at the base than the apparatus of Fig. 1 it has twice the paper holding capacity. This improved paper clip f atures a gap between the inne~- clamping limbs 30 and the outer clamping limbs 32 that is re` _,vely small~
As will be seen, the primary disadvantage of this paper clip lS due to its design which requires the use of a superfluity of material in order to achieve operability. This, in turn causes limitations on its operability and susceptibility to breakage.
In order to maintain contact of the inner clamping member 34 with the volume of paper the paper clip o~ FIG~ 2 employs inner clamping limbs 30 that axe not supported at one end 36. The unsupported ends 36 impact the volume of paper and transmit a longitudinally inward force to the supported ends 38 which assists the inner clamping member 34 in maintain~hg its grip on the volume of paper and in preventing the support member 40 from "standing-off" from the volume of paper.
However, this prior art scheme of using clamping limbs 30 tha~ not supported at their ends 36 is wasteful, limits ope~ y and at the same time creates a weakness that is vulnerable to snagging and to breakage.
It is wasteful because extra material must be used in order to support the clamping limbs 30 at a location 38 that is distant from the transverse bridge members 42. More importantly, the extra material limits operability by preventing the torsion members ~4 ~rom responding torsionally in a grip enhancing manner to the stress of accommodating a volume of paper. This is because the support member 40 contains more material, is more resistant to bending and therefore, during stress, e~fectively interrupts the transmission o~ the torsional forces formed on the torsion members 44 to the inner clamping limbs 30.
Because support member 40 interrupts the transmission of the torsional forces, junctures 46 are highly stressed and vulnerable to breakaqe. In addition, the supporte-d ends 38 are less flexible than the clamping limbs 30 themselves and are therefore, similarly susceptible to breakage.
2~603~
"'O ~0~8~ PC~/US90/05722 (3~
As will be seen, the preferred embodiment solves these problems by making t~e torsion members 44 continuous with the inner clamping limbs 30 and forming a substantially closed, reinforced, inner clamping frame (see Fig. 3). If the inner clamping limbs 30 are supported a~ a location that is relatively close to the transverse bridge members 42 rather ~han distant thereto, a surprising result occurs. Material is cofiserved and operability is increased. Thus the preferred embodiment accomplishes its object of saving material, resisting snagging and breaking and in assisting the inner clamping limbs ~0 to bend torsionally as well as longitudinally toward the volume of paper to give a better grip thereon.
Representative examples of known, prior art plastic paper clips are illustrated in drawing figures 1 and 2.
These known examples of prior art plastic paper clips are disadvantageous for several reasons. Principally, however th~y are disadvantageous because they do not employ a material/utility opti~izing design. This results in low operability, high cost and/or breakability problems.
It is, therefore, desirable to provide a plastic paper clip that neither imposes a trade-off between utility and economy nor breaks under normal use conditions.
In accordance with the present invention, an improved paper clip is provided which costs substantially less to manufacture than the prior art while offering superior operability and resistance to breakage.
Summary of Invention In general the present invention concerns a paper clip which is f~;ed of a continuous band of material, and comprises an outer cl_- ~ng frame, an inner clamping frame, and a pair of torsion members. The outer clamping frame is of a substantially triangular gross geometry and has a pair of transverse bridge members and outer clamping portions which extend from the respective trar verse bridge members and converge at an outer reinforced tip.
The ~nner clamping frame is also of a substantially triangular gross geometry and has inner clamping portions which converge at an inner reinforced tip. Each of the torsion members e~tends substantially perpendicularly from a respective transverse bridge member and continues into a respective contoured section. Each contoured section initially diverges in the direction of a respective outer clamping portion and then converges in a ~irection towards the inner reinforced tip and continues into the r~::pective inner clamping portion.--2 ~ 3 2 Ogl/04870 ' PCT/~S9~/~722 (4) Brief Description of the Drawings ~ igure 1 is a pictorial representa~ion of a prior art pap~rclip .
~ igure 2 is a pictorial representation of a ano~her prior art paper clip.
Figure 3 is a pictorial representation o~ ~he preferred embodiment of the present invention.
Figure 4 is a side view of the preferred embodiment as it would appear if it were holding a volume of paper.
Figure 5 is a rear view 5f the preferred embodiment as it would appear if it were holdinq a volume of paper.
Figure 6 is a frontal view of the preferred embodiment as it ~uld appear if it were holding a volume of paper.
Datailed Description of the Preferred Embodiment Fig 3 shows a paper-clip 49 which is constructed in accordance with the present invention and preferably mad~ ~rom plastic. The paper-clip is manu~actured in the form of a predominantly closed ~rame of substantially triangular configuration.
An inner clamping frame 50 that is continuous with inner torsion members 52 solves the problems of breakage, of excess use of material and of the interruption of the transmission of torsional force that are present in the prior art. Thus the presént invention actually uses less material than the prior art to achieve superior operability and resistance to breakage. This is both a surprising and remarkable result. When the paper clip 49 is in its stressed state torsional forces are thereby set up in torsion members 52 that act directly on an inner clamping frame 50 via contour areas 5~ and urge the contour areas in an inward di~ection and thus enhance the grip of the paper clip 49 on the volume of paper.
Consistent with the material minimizing object of the present invention, the paper clip 49 of the present embodiment is constructed of one continuous band of material. In addition, material that is needed to achieve an operable result is conserved b~ dispensing with the inner support member 40 of Fig. 2 entirely.
It is believed that this saving in material will result in a reduction in manufacturing cost of between 25 to 35%, a si~nificant ~igure.
2~6~32 `~O ~/04870 PCT/~S90/0~722 (5) In detail, the paper clip 49 has two outer clamping limbs 56 which converge in the center at a reinforced junction 57. The ends of the outer clamping limbs which are remote from the reinforced junction 57 merge into transyerse bridge members 58 which are likewise reinforced.
The torsion members 52 extend at right angles to the transverse bridge members 58 into the interior space formed in the paper-clip 49 between ~he outer clamping limbs 56 and the transverse bridge members 58. The transverse bridge members 58 are in alignment with each other when in the unstressed state and are separated by a slot 59 which is formed by the torsion members 52 in the center thereof, so that an inner clamping member 61 is comprised of two torsion members 52 which are initially, substantially parallel but which then alternately diverge and converge to form an inner clamping frame 50 which is reinforced at its tip 6~.
The ends of the two tQrsion members 64 directed towards the junction 57 form contoured sections 54 which initially diverge in the direction of the outer clamping limbs 56 and then converge, forming vertices 66 thereby, to maet at the tip 62 that is reinforced and therefore resistant to bending. T~e inner clamping frame 5a, formed thereby, is relatively long in the direction of inner clamping limbs f~ and, at-its widest is almost the ~ull width of the two transver: bridge members 58. Although the inner clamping frame 50 is resistant to bending, so that its shape is not impaired by the torsional forces acting upon the torsion members 52, it is still able to transmit the torsional forces in a ~rip enhancing manner. In other words, the inner clamping frame 50, forms a substantially closed V which ~ies in the same position within the ~ formed by the outer clamping limbs 56 and subtends a substantially identical angle.
Figs. 4 to 6 show the paper-clip 49 after it has been applied to a volume of paper. The outer clamping limbs 56 and the torsion members S2 thus act as combined torsion and bending srrings by virtue of the fact that they endeavor to return f~m their displaced position, shown in Fig. 5 to the position in which all parts of the paper-clip are in one plane. Thus, as may be seen in Fig. 6, the torsion members 52 are greatly torsiQned. The inner clamping frame 50 does not hinder the torsion, but rather allows the ~rip-enhancing transmission thereof in the region of the contoured sections 54. In addition, the contoured sections 54 are located in the vicinity of the edge 70 of the volume of paper (~ig.
4 ), so that "standing off" o~ the inner clamping frame 50 is also prevented. ~`~e longitudina` bending resistance of the clamping frame 50, thu achieves a gc.~ clamping effect on the top of the volume of paper and at th~ same time ensures that the outer clamping limbs 56 abut satisfactorily against the bottom uf the volume of paper.
Claims (2)
1. A paper clip formed of a continuous band of plastic material, comprising:
a pair of outer bridge portions, each said outer bridge portion being substantially rectilinear and having a length of equal magnitude;
an outer clamping frame having a pair of outer clamping portions, each said outer clamping portion being substantially rectilinear and extending from said respective outer bridge portion, and said pair of outer clamping portions converging at an outer reinforced tip portion;
a pair of torsion-generating portions, each said torsion-generating portion being substantially rectilinear and extending substantially perpendicularly from said respective outer bridge portion for a distance no greater than the length of each said respective outer bridge portion;
an inner clamping frame having a pair of inner clamping portions, each said inner clamping portion being rectilinear and extending substantially parallel to said respective outer clamping portion, said pair of inner clamping portions converging at an inner reinforced tip portion; and a pair of contoured inner portions, each said contoured inner portion being disposed between said respective torsion-generating portion and said respective inner clamping portion, and extending continuously- from said respective torsion-generating portion and further extending continuously into said respective inner clamping portion.
a pair of outer bridge portions, each said outer bridge portion being substantially rectilinear and having a length of equal magnitude;
an outer clamping frame having a pair of outer clamping portions, each said outer clamping portion being substantially rectilinear and extending from said respective outer bridge portion, and said pair of outer clamping portions converging at an outer reinforced tip portion;
a pair of torsion-generating portions, each said torsion-generating portion being substantially rectilinear and extending substantially perpendicularly from said respective outer bridge portion for a distance no greater than the length of each said respective outer bridge portion;
an inner clamping frame having a pair of inner clamping portions, each said inner clamping portion being rectilinear and extending substantially parallel to said respective outer clamping portion, said pair of inner clamping portions converging at an inner reinforced tip portion; and a pair of contoured inner portions, each said contoured inner portion being disposed between said respective torsion-generating portion and said respective inner clamping portion, and extending continuously- from said respective torsion-generating portion and further extending continuously into said respective inner clamping portion.
2. The paper clip of claim 1, wherein the cross-sectional diameter of said torsion-generating portions, said contoured inner portions and said inner clamping portions are each substantially equal and circumferentially uniform over their respective lengths.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US41755689A | 1989-10-05 | 1989-10-05 | |
| US417,556 | 1989-10-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2066032A1 true CA2066032A1 (en) | 1991-04-06 |
Family
ID=23654460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002066032A Abandoned CA2066032A1 (en) | 1989-10-05 | 1990-10-05 | Material and operability optimizing paper clip |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0494953A1 (en) |
| JP (1) | JPH05500007U (en) |
| CA (1) | CA2066032A1 (en) |
| WO (1) | WO1991004870A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9423513D0 (en) * | 1994-11-22 | 1995-01-11 | Bridport Aviat Prod | Cargo nets |
| US5655266A (en) * | 1996-06-17 | 1997-08-12 | Gish; Donald A. | Paper clip |
| GB2379712B (en) * | 2001-09-18 | 2003-11-12 | Peter Michael Woodworth | Retaining clip |
| US20170055903A1 (en) * | 2015-08-31 | 2017-03-02 | Stichting Imec Nederland | Electrode Holding Arrangement and Manufacturing Method Thereof |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US57028A (en) * | 1866-08-07 | Peters | ||
| US764719A (en) * | 1903-07-01 | 1904-07-12 | Robert Gorton | Paper-clip. |
| US779522A (en) * | 1904-04-18 | 1905-01-10 | Cornelius J Brosnan | Paper-clip. |
| DE1536639C3 (en) * | 1966-05-17 | 1975-07-24 | Kurt 7301 Aichelberg Lorber | Staples, in particular made of plastic |
| US3564674A (en) * | 1969-02-24 | 1971-02-23 | Albin Chaplin | Paper clip |
| DE1925260A1 (en) * | 1969-05-17 | 1970-12-23 | Ungerer Geb Dollinger | Straightening, especially stretch straightening processes |
| DE2037708A1 (en) * | 1970-07-29 | 1972-02-17 | Lorber, Kurt, 7301 Aichelberg | Staples, especially made of plastic |
| JPS5512397B2 (en) * | 1971-10-13 | 1980-04-01 | ||
| FR2574344A1 (en) * | 1984-12-11 | 1986-06-13 | Deperraz Jean Luc | Detachable plastic clip for sheets |
| DE3700322C1 (en) * | 1987-01-08 | 1988-02-25 | Kurt Lorber | Plastic staple |
-
1990
- 1990-10-05 WO PCT/US1990/005722 patent/WO1991004870A1/en not_active Application Discontinuation
- 1990-10-05 EP EP19900915559 patent/EP0494953A1/en not_active Withdrawn
- 1990-10-05 CA CA002066032A patent/CA2066032A1/en not_active Abandoned
- 1990-10-05 JP JP1992600011U patent/JPH05500007U/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0494953A1 (en) | 1992-07-22 |
| WO1991004870A1 (en) | 1991-04-18 |
| JPH05500007U (en) | 1993-07-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued | ||
| FZDE | Discontinued |
Effective date: 19971006 |