WO1988000516A2 - Crimp tool and dies therefor for use in attaching fiber optic cable to fiber optic connectors - Google Patents
Crimp tool and dies therefor for use in attaching fiber optic cable to fiber optic connectors Download PDFInfo
- Publication number
- WO1988000516A2 WO1988000516A2 PCT/US1987/001638 US8701638W WO8800516A2 WO 1988000516 A2 WO1988000516 A2 WO 1988000516A2 US 8701638 W US8701638 W US 8701638W WO 8800516 A2 WO8800516 A2 WO 8800516A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- crimp
- dies
- star
- fiber optic
- tool
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
- H01R43/042—Hand tools for crimping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
- B25B27/146—Clip clamping hand tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
- B25B7/02—Jaws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
- B25B7/02—Jaws
- B25B7/04—Jaws adjustable
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3887—Anchoring optical cables to connector housings, e.g. strain relief features
- G02B6/3888—Protection from over-extension or over-compression
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3898—Tools, e.g. handheld; Tuning wrenches; Jigs used with connectors, e.g. for extracting, removing or inserting in a panel, for engaging or coupling connectors, for assembling or disassembling components within the connector, for applying clips to hold two connectors together or for crimping
Definitions
- This invention relates to a crimping tool for use in securing fiber optic cables to fiber optic connectors in a secure manner wherein little or no stresses are placed on the terminated fiber of the cable.
- the invention also relates to an improvement in a fiber optic connector assembly having had a fiber optic cable secured thereto by means of the crimp tool with improved dies of the invention.
- fiber optic connectors are designed to secure a fiber optic cable, for termination purposes, at least at two different portions thereof. More specifically, fiber optic cables are generally a concentric arrangement, described from the outside in, comprised of an outer protective sheath covering a layer of strength fibers which cover the fiber extending through the center of the cable. In addition, this fiber is itself often covered by what is known as a buffer layer, typically silicone or some other soft material as is well known to those of ordinary skill in the art.
- the termination of the fiber optic cable generally involves seizing the fiber directly within the body of a connector in a manner such that the end of the fiber is held within a mating ferrule of the connector with the end thereof.
- the cable is also secured to the non-mating end of the connector at the outer sheath and strength layer thereof.
- a sleeve is received within the cable in a manner surrounding the buffer covered fiber. and such that the strength layer and the outer sheath concentrically overlie the sleeve.
- a crimp extension of the back end of the connector coextends with the sleeve in a manner such that the strength layer and outer sheath are received between the sleeve and the crimp extension.
- the cable is then secured by crimping the crimp extension.
- an improved crimping tool with an improved die structure which obviates the above-discussed disadvantages. More specifically, securing of fiber optic cables is difficult because the depth of the required crimp must typically be much greater than the crimping required for standard electrical cable. This is because the depth of the portion of the cable being secured, i.e., the outer sheath and strength layer r is significantly greater than in the case with electrical cables which have only a thin insulating coating or covering immediately adjacent the wire conductors thereof. Moreover, in electrical cables the conductors themselves may be subjected to crimping.
- the invention comprises an improvement in a crimp tool used for crimping with fiber optic connectors of the type wherein removable crimp dies are provided which determine the shape and configuration of the resulting crimp when the tool is used.
- the improvement resides in the configuration of the dies which comprise two parts which when the two parts are brought together define a star shape, having at least six points, within the inner clamping surface thereof.
- the star defined has 6 or 8 points with the angles at the transitions between points and at the point ends falling within
- the dies are employed in a crimp tool of the type having two jaws
- the improvement in the dies further comprises, preferably in the top die, a vertically extending channel which guides the bottom die in an aligned manner into engagement with the top half. This channel ensures that the final crimping movements of the dies are substantially linear in nature. Moreover, as crimping commences, material creep
- the invention resides in the above-described dies themselves.
- Figure 1 is a perspective view of an assembled crimp tool for use with the crimp dies in accordance with the invention, and shown with the crimp dies mounted therein;
- Figure 2 is a view as in Figure 1, showing the dies in accordance with the invention disassembled from the tool;
- Figure 3 is a side view, in enlarged form, showing the crimp dies, and the various features thereof, in accordance with the invention
- Figure 4 is a partial front cross-sectional view of the dies in accordance with the invention.
- Figure 5 is a schematic view from the side, illustrating the two dies brought together to define the interior configuration defining a six-pointed star illustrating the specific features of the preferred embodiment invention.
- Figure 1 there is shown a crimp tool 1 assembled with the improved crimp dies 9 and 11 in accordance with the invention.
- the tool 1 includes two handles 3a, 3b which cause two jaws 13a, 13b to pivot about a pivot axis 5 to clamp the two dies 9,11 together onto the back of a fiber optic connector in a conventional manner to effect crimping thereof to secure a fiber optic cable thereto.
- the dies 9,11 are held on the jaws 13a, 13b by screws 15a and 15b.
- a ratchet mechanism 7 conventional in nature and not shown in detail, serves to permit the tool 1 to be clamped without permitting reverse motion until the full range of movement into a clamping position has been followed, at which time the conventional ratchet mechanism 7 will 5 release and permit the tool to be opened again.
- FIG. 1 shows the dies 9, 11 in accordance with the invention brought together such that the crimping region is constructed in a manner to define a star shape cavity
- the star shape cavity 17 is made up by two half star shape configured die regions 18a and 18b as shown in Figure 2.
- This passage 27 corresponds in depth to the height A of crimp region 18b of lower die 11.
- the width of the lower die crimp region 18b is of a predetermined width E which is slightly smaller than the width of passage 27 which is of predetermined width
- a cutout portion more clearly shown as 25 at an angle ⁇ , which is typically of about 45 degrees, is provided to ensure centering of the lower crimp region 18b with the upper crimp region 18a.
- the angle ⁇ provides for a tolerance region of predetermined width C, the dimensions of all of these portions being determined conventionally in accordance with the size of the crimp dies employed for crimping predetermined sized connectors.
- the dies 9 and 11 include the star shape crimp region 17 in the center thereof, but towards the outer edges there is a non- crimp configured region of predetermined depth G and A which facilitates centering on the connector and ensures that portions of the connector which are not to be crimped are not inadvertently crimped by use of the tool 10 1.
- FIG. 5 is a partial view showing various features of the invention with the two dies brought together.
- the crimp region 17 is shaped to define a six-pointed star in a preferred embodiment.
- an ' eight-pointed star configuration can also be employed depending on the desired crimping 2° effect and the size of the connector upon which it is being employed. Anything less than six points or greater than eight points would result in an unsatisfactory crimp inasmuch as greater than eight points approaches a circular configuration and does not
- optimum angles are shown wherein the angle defined by the center of the crimp region and extending through the points of two adjacent stars, shown as ⁇ is 60 degrees. On the other hand, limiting this angle ⁇ to 60 degrees is not necessary 5 and the angle ⁇ can fall within a range of about 40 degrees to 70 degrees.
- the other angles illustrated of course will vary in accordance with the variation in the above-variation in angle « .
- the angle made up by each star point on the inside thereof is preferably a 90 degree angle ⁇ ⁇ with the half angle ⁇ being a 45 degree angle.
- the corresponding half angle ⁇ as defined from the center of the star through a point of the star and the transition zone between two points of the stars is, in the case when ⁇ equals 60 degrees, equal to about 30 degrees.
- angle ⁇ can be as large as 150 degrees although as previously indicated, 90 degrees is an optimum.
- the materials employed to make up the die typically steel, brass or bronze can be employed. These materials will be of a hardness range selected in accordance to the specific crimp sleeve with which it is to be employed. The selection of the hardness range and materials is conventional and well known to those of ordinary skill in the art.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Abstract
Crimping tool (1) and improved dies (9, 11) for use in securing fiber optic connectors to cables. The dies include a crimping region (18a, 18b) which when the two dies are brought together, define a star shape space having six or eight points. The longitudinal passage (27) in one of the dies leads into the crimping region and serves to prevent material creep of the material being crimped when the two dies are brought into crimping engagement.
Description
DESCRIPTION
CRIMP TOOL AND DIES THEREFOR FOR USE IN ATTACHING FIBER OPTIC CABLE TO FIBER OPTIC CONNECTORS
BACKGROUND OF THE INVENTION This invention relates to a crimping tool for use in securing fiber optic cables to fiber optic connectors in a secure manner wherein little or no stresses are placed on the terminated fiber of the cable. The invention also relates to an improvement in a fiber optic connector assembly having had a fiber optic cable secured thereto by means of the crimp tool with improved dies of the invention.
Tyically, fiber optic connectors are designed to secure a fiber optic cable, for termination purposes, at least at two different portions thereof. More specifically, fiber optic cables are generally a concentric arrangement, described from the outside in, comprised of an outer protective sheath covering a layer of strength fibers which cover the fiber extending through the center of the cable. In addition, this fiber is itself often covered by what is known as a buffer layer, typically silicone or some other soft material as is well known to those of ordinary skill in the art.
The termination of the fiber optic cable generally involves seizing the fiber directly within the body of a connector in a manner such that the end of the fiber is held within a mating ferrule of the connector with the end thereof. In addition, in order to prevent stresses from being applied to the held fiber, and to ensure a secure fastening to and within the connector, the cable is also secured to the non-mating end of the connector at the outer sheath and strength layer thereof.
In one prior art connector, in order to secure the cable to the connector, a sleeve is received within the cable in a manner surrounding the buffer covered fiber.
and such that the strength layer and the outer sheath concentrically overlie the sleeve. A crimp extension of the back end of the connector coextends with the sleeve in a manner such that the strength layer and outer sheath are received between the sleeve and the crimp extension. The cable is then secured by crimping the crimp extension. Such an arrangement is disclosed, for example, in copending U.S. application Serial No. 766,743 filed August 16, 1985 which names inventors in common with this application, and which disclosure is specifically incorporated by reference herein.
In the past, in order to effect the crimping operation, standard crimp tools and dies of the type employed with conventional electrical cables and electrical connectors have been employed. The crimp surfaces of such dies generally define a hexagonal surface. However, it has been found that often when employed with fiber optic cables and connectors, the crimp made by such a die is non-uniform and fails to securely fix the cable to the connector. More often than not, the fiber itself is displaced from a central position causing alignment difficulties when siezed within the connector.
SUMMARY OF THE INVENTION in accordance with the invention there is provided an improved crimping tool with an improved die structure which obviates the above-discussed disadvantages. More specifically, securing of fiber optic cables is difficult because the depth of the required crimp must typically be much greater than the crimping required for standard electrical cable. This is because the depth of the portion of the cable being secured, i.e., the outer sheath and strength layerr is significantly greater than in the case with electrical cables which have only a thin insulating coating or covering immediately adjacent the wire conductors thereof. Moreover, in electrical cables the conductors themselves may be subjected to
crimping. However, this is not possible in the case of a fiber of a fiber optic cable since the fiber would become damaged and inoperative. Accordingly, it is essential to provide a much deeper crimp when attaching ι fiber optic cables to connectors, which crimp must be uniform, provide sufficient holding power, centrally c position the fiber and must not stress the portion being crimped beyond its breaking point.
The invention comprises an improvement in a crimp tool used for crimping with fiber optic connectors of the type wherein removable crimp dies are provided which determine the shape and configuration of the resulting crimp when the tool is used. The improvement resides in the configuration of the dies which comprise two parts which when the two parts are brought together define a star shape, having at least six points, within the inner clamping surface thereof.
In a more specific aspect the star defined has 6 or 8 points with the angles at the transitions between points and at the point ends falling within
20 predetermined values sufficient to ensure a uniform and secure crimp when employed to attach fiber optic cables to fiber optic connectors.
Further, in a still more specific aspect, the dies are employed in a crimp tool of the type having two jaws
25 which come together by pivoting about an axis to which they are attached. The pivoting is caused by exerting a force on two handles extending from the axis away from the jaws. In this type of tool the improvement in the dies further comprises, preferably in the top die, a vertically extending channel which guides the bottom die in an aligned manner into engagement with the top half. This channel ensures that the final crimping movements of the dies are substantially linear in nature. Moreover, as crimping commences, material creep
3 of the object being crimped is avoided since the channel serves to confine all material within the dies surfaces.
In another aspect the invention resides in the above-described dies themselves.
BRIEF DESCRIPTION OF THE DRAWINGS
Having briefly described the invention, the same will become better understood from the following detailed discussion thereof, made with reference to the attached drawings wherein:
Figure 1 is a perspective view of an assembled crimp tool for use with the crimp dies in accordance with the invention, and shown with the crimp dies mounted therein;
Figure 2 is a view as in Figure 1, showing the dies in accordance with the invention disassembled from the tool;
Figure 3 is a side view, in enlarged form, showing the crimp dies, and the various features thereof, in accordance with the invention;
Figure 4 is a partial front cross-sectional view of the dies in accordance with the invention; and
Figure 5 is a schematic view from the side, illustrating the two dies brought together to define the interior configuration defining a six-pointed star illustrating the specific features of the preferred embodiment invention.
DETAILED DISCUSSION OF THE INVENTION
In Figure 1 there is shown a crimp tool 1 assembled with the improved crimp dies 9 and 11 in accordance with the invention. Generally speaking, the tool 1 includes two handles 3a, 3b which cause two jaws 13a, 13b to pivot about a pivot axis 5 to clamp the two dies 9,11 together onto the back of a fiber optic connector in a conventional manner to effect crimping thereof to secure a fiber optic cable thereto. AS more clearly shown in Figure 2, the dies 9,11 are held on the jaws 13a, 13b by screws 15a and 15b. The operation of the tool is such that a ratchet
mechanism 7, conventional in nature and not shown in detail, serves to permit the tool 1 to be clamped without permitting reverse motion until the full range of movement into a clamping position has been followed, at which time the conventional ratchet mechanism 7 will 5 release and permit the tool to be opened again. Figure
1 shows the dies 9, 11 in accordance with the invention brought together such that the crimping region is constructed in a manner to define a star shape cavity
17. The star shape cavity 17 is made up by two half star shape configured die regions 18a and 18b as shown in Figure 2.
In Figure 3 the dies 9, 11 in accordance with the invention are more clearly shown. More specifically, an upper die 9 is shown which includes star shape region
18a from which extends a passage 27 of a predetermined depth B. This passage 27 corresponds in depth to the height A of crimp region 18b of lower die 11.
Accordingly, when the dies 9, 11 are brought together, the engagement of die region 18b as shown by a raised 0 portion 21 terminating at edge 23 is received within passage 27 so that upon the end of clamping movement, which at this point is almost substantially vertical, as the material being crimped is engaged by the walls of the dies 9, 11 at the crimping regions thereof, the ^ passage 27 prevents any material creep outside of the die crimp region 17 ensuring a substantially uniform crimp configured in accordance with the regions 18a and
18b. The width of the lower die crimp region 18b is of a predetermined width E which is slightly smaller than the width of passage 27 which is of predetermined width
D. In order to account for any slight variations in tolerances, a cutout portion, more clearly shown as 25 at an angle α , which is typically of about 45 degrees, is provided to ensure centering of the lower crimp region 18b with the upper crimp region 18a. The angle α provides for a tolerance region of predetermined width C, the dimensions of all of these
portions being determined conventionally in accordance with the size of the crimp dies employed for crimping predetermined sized connectors.
As further shown in Figure 4, the dies 9 and 11 include the star shape crimp region 17 in the center thereof, but towards the outer edges there is a non- crimp configured region of predetermined depth G and A which facilitates centering on the connector and ensures that portions of the connector which are not to be crimped are not inadvertently crimped by use of the tool 10 1.
The novel configuration of the dies in accordance with the invention is more clearly shown in Figure 5 which is a partial view showing various features of the invention with the two dies brought together. As can be seen from said figure, the crimp region 17 is shaped to define a six-pointed star in a preferred embodiment. In this regard, it is noted that although a six-pointed star is shown, an' eight-pointed star configuration can also be employed depending on the desired crimping 2° effect and the size of the connector upon which it is being employed. Anything less than six points or greater than eight points would result in an unsatisfactory crimp inasmuch as greater than eight points approaches a circular configuration and does not
" 2ζ provide sufficient depth of crimping in connection with fiber optic cable, and anything less than six points provides for too deep a crimp possibly tearing the material being crimped, or if configured not sufficiently deep, resulting in an inadequate crimp.
30 As shown in Figure 5, optimum angles are shown wherein the angle defined by the center of the crimp region and extending through the points of two adjacent stars, shown as θ is 60 degrees. On the other hand, limiting this angle θ to 60 degrees is not necessary 5 and the angle θ can fall within a range of about 40 degrees to 70 degrees. The other angles illustrated of course will vary in accordance with the variation in the
above-variation in angle « . As shown also in Figure 5, preferably the angle made up by each star point on the inside thereof is preferably a 90 degree angle θ θ with the half angle β being a 45 degree angle. The corresponding half angle ζ as defined from the center of the star through a point of the star and the transition zone between two points of the stars is, in the case when θ equals 60 degrees, equal to about 30 degrees.
As noted previously, all these angles will vary in accordance with the variation in the angle θ . It is noted however in this regard, that the angle θ can be as large as 150 degrees although as previously indicated, 90 degrees is an optimum.
In another aspect of the invention, it is noted that it is essential that the number of stars points be kept at an even number to provide a symmetrical crimp which is essential in fiber optic cables. Thus, a five or seven pointed star is not desireable.
With respect to the materials employed to make up the die, typically steel, brass or bronze can be employed. These materials will be of a hardness range selected in accordance to the specific crimp sleeve with which it is to be employed. The selection of the hardness range and materials is conventional and well known to those of ordinary skill in the art.
Having described the invention, the same is broadly defined in the appended claims in a manner intended to be non-limitative.
Claims
1. In a crimp tool of the type comprising two jaw members actuatable by two handles, the jaw members being adapted for having two crimp dies respectively secured therein, and the crimp dies secured within the jaw member having a crimping region of predetermined configuration, the improvement wherein the crimp regions of the dies are configured such that when the jaw members are brought together for crimping, the crimp regions define a star shaped space having one of six or eight points.
2. A crimp member in accordance with claim 1 wherein said crimp regions are configured to define a star having six points.
3. A crimp tool in accordance with claim 2 wherein said star shape of the crimp regions of the die members is configured such that an angle θ defined by lines extending from the center of the star through two adjacent points of the star is equal to about 40-70 degrees.
4. A crimp tool as in claim 3 wherein said angle θ is equal to about 60 degrees.
5. A crimp tool as in claim 1 wherein one of said dies further comprises a longitudinally extending passage of predetermined depth leading into the crimp region thereof.
6. A pair of dies for use in a fiber optic connector crimp tool, said dies having crimp regions respectively which regions are configured such that when the dies are brought together for crimping, the crimp regions define a star shaped space having one of six or eight points.
7. A pair of dies as in claim 6 wherein said crimp regions are configured to define a star having six points.
8. A pair of dies as in claim 7 wherein said star shape of the crimp regions of the die members is configured such that an angle θ defined by lines extending from the center of the star through two adjacent points of the star is equal to about 40-70 degrees.
9. A pair of dies as in claim 8 wherein said angle θ is equal to about 60 degrees.
10. A pair of dies as in claim 6 wherein one of said dies further comprises a longitudinally extending passage of predetermined depth leading into the crimp region thereof.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US88658286A | 1986-07-16 | 1986-07-16 | |
US886,582 | 1986-07-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1988000516A2 true WO1988000516A2 (en) | 1988-01-28 |
WO1988000516A3 WO1988000516A3 (en) | 1988-02-11 |
Family
ID=25389306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1987/001638 WO1988000516A2 (en) | 1986-07-16 | 1987-07-15 | Crimp tool and dies therefor for use in attaching fiber optic cable to fiber optic connectors |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU7800387A (en) |
WO (1) | WO1988000516A2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2268113A (en) * | 1992-06-24 | 1994-01-05 | Liu Lien Huang | Multipurpose pliers |
US5509291A (en) * | 1992-04-06 | 1996-04-23 | Pressmaster Tool Ab | Crimping tool |
EP1053832A2 (en) * | 1999-05-13 | 2000-11-22 | Framatome Connectors International | Cooperating die for crimping tool having a rotatable die wheel |
EP1645367A1 (en) * | 2004-10-07 | 2006-04-12 | Zeropiu' S.p.a. | Connector closing and reopening device for hair extensions |
US7784358B2 (en) | 2004-11-12 | 2010-08-31 | Vfs Technologies Limited | Flow metering device for a plurality of fluid carriers |
TWI836981B (en) * | 2023-05-09 | 2024-03-21 | 李有信 | Parallel type crimping pliers with replaceable mouth assembly |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1085461A (en) * | 1913-05-22 | 1914-01-27 | Nuernberger Metall & Lackierwarenfabrik Vorm Gebrueder Bing A G | Pliers. |
US3154981A (en) * | 1961-06-08 | 1964-11-03 | Anderson Electric Corp | Compression tool |
US3487524A (en) * | 1967-11-16 | 1970-01-06 | Sargent & Co | Locator and holder in a crimping tool for an electrical connector |
US4067224A (en) * | 1975-08-04 | 1978-01-10 | Cedric Gwilliam Birks | Swaging dies |
US4654478A (en) * | 1978-03-02 | 1987-03-31 | Ngk Insulators, Ltd. | Electrical insulator including metal sleeve compressed onto a fiber reinforced plastic rod and method of assembling the same |
-
1987
- 1987-07-15 WO PCT/US1987/001638 patent/WO1988000516A2/en unknown
- 1987-07-15 AU AU78003/87A patent/AU7800387A/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1085461A (en) * | 1913-05-22 | 1914-01-27 | Nuernberger Metall & Lackierwarenfabrik Vorm Gebrueder Bing A G | Pliers. |
US3154981A (en) * | 1961-06-08 | 1964-11-03 | Anderson Electric Corp | Compression tool |
US3487524A (en) * | 1967-11-16 | 1970-01-06 | Sargent & Co | Locator and holder in a crimping tool for an electrical connector |
US4067224A (en) * | 1975-08-04 | 1978-01-10 | Cedric Gwilliam Birks | Swaging dies |
US4654478A (en) * | 1978-03-02 | 1987-03-31 | Ngk Insulators, Ltd. | Electrical insulator including metal sleeve compressed onto a fiber reinforced plastic rod and method of assembling the same |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5509291A (en) * | 1992-04-06 | 1996-04-23 | Pressmaster Tool Ab | Crimping tool |
GB2268113A (en) * | 1992-06-24 | 1994-01-05 | Liu Lien Huang | Multipurpose pliers |
GB2268113B (en) * | 1992-06-24 | 1996-01-03 | Liu Lien Huang | Multipurpose pliers |
EP1053832A2 (en) * | 1999-05-13 | 2000-11-22 | Framatome Connectors International | Cooperating die for crimping tool having a rotatable die wheel |
EP1053832A3 (en) * | 1999-05-13 | 2003-05-28 | Framatome Connectors International | Cooperating die for crimping tool having a rotatable die wheel |
EP1645367A1 (en) * | 2004-10-07 | 2006-04-12 | Zeropiu' S.p.a. | Connector closing and reopening device for hair extensions |
US7784358B2 (en) | 2004-11-12 | 2010-08-31 | Vfs Technologies Limited | Flow metering device for a plurality of fluid carriers |
TWI836981B (en) * | 2023-05-09 | 2024-03-21 | 李有信 | Parallel type crimping pliers with replaceable mouth assembly |
Also Published As
Publication number | Publication date |
---|---|
WO1988000516A3 (en) | 1988-02-11 |
AU7800387A (en) | 1988-02-10 |
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