US20100287994A1 - Strand-Feeder - Google Patents
Strand-Feeder Download PDFInfo
- Publication number
- US20100287994A1 US20100287994A1 US12/454,167 US45416709A US2010287994A1 US 20100287994 A1 US20100287994 A1 US 20100287994A1 US 45416709 A US45416709 A US 45416709A US 2010287994 A1 US2010287994 A1 US 2010287994A1
- Authority
- US
- United States
- Prior art keywords
- strand
- teeth
- disks
- rotatable
- feeding device
- 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
- 239000000463 material Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 239000006263 elastomeric foam Substances 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 description 9
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000006261 foam material Substances 0.000 description 3
- 210000001114 tooth apex Anatomy 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 238000000429 assembly Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- -1 filaments Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H51/00—Forwarding filamentary material
- B65H51/02—Rotary devices, e.g. with helical forwarding surfaces
- B65H51/04—Rollers, pulleys, capstans, or intermeshing rotary elements
- B65H51/06—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate singly
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
Definitions
- This invention relates to an apparatus and method for slip-free feeding of yarn strands. It is especially useful where tension force is applied in order to increase or decrease the strand tension.
- the invention relates to an apparatus and method of controlling the movement of a strand. More specifically, it transmits tension and/or velocity from a control mechanism to a moving strand.
- Strand materials such as filaments, fiberglass, textile yarns and the like are frequently guided around at least a portion of a pulley or sheave in order to add or reduce the strand tension by means of driving or breaking the pulley or sheave.
- One common problem with these systems is that the frictional forces between the strand and the pulley are insufficient to prevent slippage.
- some sheaves are equipped with a waving groove on their periphery which forces the strand to follow its path and through this undulated path increases the friction between the sheave and the strand.
- Yet a further object of the present invention is to freely release the downstream strand from the feeding sheaves without the need to forcefully pull the downstream strand out of the feeding sheaves.
- Another object of the invention is to provide a feeding system without the possibility of the strand or individual fibers from wrapping themselves around rotating mechanical elements.
- Yet another object of the invention is to use flexible means to control the amount of undulation in the transported strand in order to limit the stress in the transported strand during it's engagement with the transporting sheaves.
- An additional object of the invention is to be able to adjust the force of the flexible means to control the amount of undulation in the transported strand in order to limit the stress in the transported strand during it's engagement with the transporting sheaves to a desirable level.
- Yet another object of the invention is the provision to adjust the clamping force exerted by the feeding disks on the passing strand.
- FIG. 1 is a perspective view of the strand feeder with the strand wrapped around the two tooth wheels;
- FIG. 2 is a side view of the strand feeder and demonstrates the open throat of the unit on the right side and the intermeshing teeth on the left;
- FIG. 3 shows the back side of the strand feeder with the undulated configuration of the clamped strand between by the tooth wheels;
- FIG. 4 gives a top view of the strand feeder
- FIG. 5 gives a cross section of the strand feeder showing the interior parts of the unit
- FIG. 6 shows the major elements of the strand feeder in exploded view and indicates how the parts are fitted together
- FIG. 7 the two tooth wheels are shown separated with the strand shown between them;
- FIG. 8 gives a variance of the strand feeder in a cross sectional view with an adjustable spring to controlling the clamping force of the strand between the two tooth wheels;
- FIG. 9 shows another variance where the strand is held against an elastomer or foam material on the bottom wheel by the tooth apex of the upper wheel;
- FIG. 10 is a cross section with a disk brake holding the upper tooth wheel 3 back through which means the strand is clamped between the teeth of the two opposing tooth wheels.
- FIG. 11 is a cross-section through both wheels showing the various tooth portions.
- FIG. 1 shows in a perspective overall view the strand feeder. It consists of a tension control body 1 with a rotatable lower tooth wheel 2 on top. An upper tooth wheel 3 is located at a slanted angle above the lower tooth wheel 2 and intermeshes with it's teeth 19 on one side with the teeth 19 of the lower tooth wheel 2 . The upper tooth wheel 3 is rotatably mounted on the upper bearing housing 4 , which is stationary and being held through the mounting bracket 5 onto the tension control body 1 . The upstream strand 6 is wrapped around the teeth 19 of the lower tooth wheel 2 and the upper tooth wheel 3 and the downstream strand 7 exits the feeder-system “A” after approximately 270 degree.
- FIG. 2 the side shows the skewed axis 30 of the upper tooth wheel 3 which is biased in relation to the main axis 29 . This results in an open throat 28 of the lower tooth wheel 2 and the upper tooth wheel 3 into which the upstream strand 6 is laid.
- the rear view shows how the undulated strand 8 is held between the teeth 19 for a positive downstream feeding of the downstream strand 7 .
- the upper bearing housing 4 is mounted onto the tension control body 1 by means of the mounting bracket 5
- the top of the feeder-system “A” is revealed in FIG. 4 . It also shows the upstream strand 6 entering the feeder-system “A” and the downstream strand 7 leaving it. It reveals the top side of the mounting bracket 5 to which is fastened the upper bearing housing 4 .
- the cross section of the feeder-system “A” in FIG. 5 details the inside of the unit.
- the control rotor 9 is firmly mounted over the bottom shaft 12 .
- the rotational velocity of the control rotor 9 with lower tooth wheel 2 firmly connected control the feed rate of the unit by electromagnetic means (not shown).
- the effect of this is a control of the tension in the downstream strand 7 in relation to the upstream strand 6 . It also can be used to control the velocity of the downstream strand 7 .
- the bottom shaft 12 is mounted in two body bearings 10 which also maintain its axial position.
- the top shaft 13 is mounted in two top wheel bearings 11 which in turn are mounted in the adjustment hub 18 .
- the adjustment hub 18 is provided with an external adjustment thread 14 .
- this adjustment hub 18 By turning this adjustment hub 18 in the internally threaded mounting bracket 5 its axial position can be adjusted in order to adjust the engagement of the teeth 19 on the lower tooth wheel 2 with the teeth 19 of the upper tooth wheel 3 . Through this adjustment, the possibility is given to run finer as well as coarser strands through the feeder-system “A”.
- An adjustment lock-screw 15 clamps the adjustment hub 18 firmly onto the mounting bracket 5 in order to maintain a adjusted setting.
- the lower tooth wheel 2 is mounted onto the bottom shaft 12 by means of a lower mounting-flange 16 and the upper tooth wheel 3 is mounted onto the top shaft 13 by means of the upper mounting-flange 17 .
- the exploded view shows the individual sup-assemblies more clearly.
- the center lines demonstrate how the individual parts are positioned in assembled mode.
- FIG. 7 the lower tooth wheel 2 and the upper tooth wheel 3 are shown separated to more clearly demonstrate how the strand 36 relates to them.
- the undulated configuration is caused by the teeth 19 of both, the lower tooth wheel 2 and the upper tooth wheel 3 .
- This zigzagging of the strand generates at each bending point additional friction which assists in the positive transport of the strand through the feeder-system “A”.
- the thickness of the tension teeth 19 can be designed in such a manner that they touch each other on both tooth flanks 35 .
- FIG. 8 A variant of the clamping action is shown in FIG. 8 .
- this variation incorporates a spring loaded downward clamping force induced by the tension spring 21 which presses the axially floating hub 22 downward.
- the rate of the spring force can be adjusted by threading the spring nut 20 up or down on the fixed mounting plate 23 .
- This arrangement allows the upper tooth wheel 3 to self-adjust according to the thickness and/or stiffness of the strand and thus prevents excess stressing of the undulated strand 8 .
- FIG. 9 reveals another variation of clamping assistance for the strand material.
- the undulated strand 8 is pressed by the teeth 19 of the upper tooth wheel 3 into a soft elastomer or foam material 31 . This provides sufficient clamping force, together with the friction multiplying undulation to positively feed the strand by the feeder-system “A”.
- FIG. 10 shows another variation of the invention where a braking force is applied to the upper tooth wheel 3 by means of the brake spring 25 , pushing against the brake disk 24 .
- This generates sufficient drag on the upper tooth wheel 3 by pressing its tooth flank 35 against the tooth flank 35 of the lower tooth wheel 2 .
- This pressure provides sufficient clamping force to the passing strand 36 for slip-less feeding.
- the material of the teeth 19 can be composed of polyurethane or a similar elastic material.
- the braking force can be adjusted by threading the adjustment nut 26 up or down the fixed mounting hub 27 .
- FIG. 11 a cross-section through the lower tooth wheel 2 and upper tooth wheel 3 illustrate the slight skewing of the skewed axis 30 against the main axis 29 .
- the different portions of the teeth 19 are shown with the tooth lead-in 32 assuring that the upstream strand 6 is properly placed into the open throat 28 of the two wheels.
- the tooth apex 33 is the portion around which the strand 36 (not shown) is laid during its intermeshing with the teeth 19 of the upper tooth wheel 3 .
Landscapes
- Tension Adjustment In Filamentary Materials (AREA)
Abstract
A mechanical device for advancing a strand between two rotatable sheaves where the facing sides of the sheaves are provided with teeth. The sheaves are mounted on separate axis and are tilted toward each other. This tilting allows the teeth of the two sheaves to engage with each other at one side and to disengage with a gap between themselves on the opposite side of the two disks. The strand is laid in the gap portion between the two sheaves and is wrapped in circular configuration between the teeth portion in undulated shape. The downstream portion of the wrapped strand is released by the teeth of the two sheaves in the gap portion and can be effortlessly be withdrawn from the sheaves.
Description
- This invention relates to an apparatus and method for slip-free feeding of yarn strands. It is especially useful where tension force is applied in order to increase or decrease the strand tension.
- The invention relates to an apparatus and method of controlling the movement of a strand. More specifically, it transmits tension and/or velocity from a control mechanism to a moving strand. Strand materials such as filaments, fiberglass, textile yarns and the like are frequently guided around at least a portion of a pulley or sheave in order to add or reduce the strand tension by means of driving or breaking the pulley or sheave. One common problem with these systems is that the frictional forces between the strand and the pulley are insufficient to prevent slippage. To improve the adherence of the strand to the transporting pulley some sheaves are equipped with a waving groove on their periphery which forces the strand to follow its path and through this undulated path increases the friction between the sheave and the strand. One problem inherited with these systems is that the upstream strands have to have a certain tension in order to be pulled into the wavy groove. Another problem is the release of the downstream strand from the groove in the sheave which again requires a certain tension to assure that all filaments of a multi-fiber strand are released. Especially if some fibers of the strand are broken, they have a chance to be wound up around the sheave, fill up the undulated groove and the sheave loses the effect of the friction increasing groove.
- It is an object of the present invention to provide a strand delivery system for controlling the tension and/or rate of delivery of a strand to a downstream located strand processing station by improving the coordination of sheave rotation with strand movement through a positive gripping of the strand by the engaging sheaves.
- It is another object of object of the invention to be able to present the upstream strand to the feeding sheaves without the need of applying pretension to the upstream strand but rather by the simple act of laying the strand into an open space in the strand delivery system.
- Yet a further object of the present invention is to freely release the downstream strand from the feeding sheaves without the need to forcefully pull the downstream strand out of the feeding sheaves.
- Another object of the invention is to provide a feeding system without the possibility of the strand or individual fibers from wrapping themselves around rotating mechanical elements.
- It is a further object of the invention to adjust the engagement of the protrusions in two sheaves in order to control the undulation of the transported strand.
- Yet another object of the invention is to use flexible means to control the amount of undulation in the transported strand in order to limit the stress in the transported strand during it's engagement with the transporting sheaves.
- An additional object of the invention is to be able to adjust the force of the flexible means to control the amount of undulation in the transported strand in order to limit the stress in the transported strand during it's engagement with the transporting sheaves to a desirable level.
- It is a further object of the invention to provide a physical clamping action of the transported strand during its passing through the feeding disks through flanks of teeth of the feeding system.
- Yet another object of the invention is the provision to adjust the clamping force exerted by the feeding disks on the passing strand.
- It is yet another object of the invention to apply a clamping action on a strand while it passes through feeding disks by the application of an elastic material which presses the strand against the apex of teeth on an opposite disk.
- Some of the objects of the invention have been set forth above. Other objects and advantages of the invention will appear as the description of the invention proceeds when taken in conjunction with the following drawings, in which:
-
FIG. 1 is a perspective view of the strand feeder with the strand wrapped around the two tooth wheels; -
FIG. 2 is a side view of the strand feeder and demonstrates the open throat of the unit on the right side and the intermeshing teeth on the left; -
FIG. 3 shows the back side of the strand feeder with the undulated configuration of the clamped strand between by the tooth wheels; -
FIG. 4 gives a top view of the strand feeder; -
FIG. 5 gives a cross section of the strand feeder showing the interior parts of the unit; -
FIG. 6 shows the major elements of the strand feeder in exploded view and indicates how the parts are fitted together; - In
FIG. 7 the two tooth wheels are shown separated with the strand shown between them; -
FIG. 8 gives a variance of the strand feeder in a cross sectional view with an adjustable spring to controlling the clamping force of the strand between the two tooth wheels; -
FIG. 9 shows another variance where the strand is held against an elastomer or foam material on the bottom wheel by the tooth apex of the upper wheel; -
FIG. 10 is a cross section with a disk brake holding theupper tooth wheel 3 back through which means the strand is clamped between the teeth of the two opposing tooth wheels. -
FIG. 11 is a cross-section through both wheels showing the various tooth portions. - Referring now specifically to the drawings,
FIG. 1 shows in a perspective overall view the strand feeder. It consists of atension control body 1 with a rotatablelower tooth wheel 2 on top. Anupper tooth wheel 3 is located at a slanted angle above thelower tooth wheel 2 and intermeshes with it'steeth 19 on one side with theteeth 19 of thelower tooth wheel 2. Theupper tooth wheel 3 is rotatably mounted on the upper bearinghousing 4, which is stationary and being held through themounting bracket 5 onto thetension control body 1. Theupstream strand 6 is wrapped around theteeth 19 of thelower tooth wheel 2 and theupper tooth wheel 3 and thedownstream strand 7 exits the feeder-system “A” after approximately 270 degree. - In
FIG. 2 the side shows theskewed axis 30 of theupper tooth wheel 3 which is biased in relation to themain axis 29. This results in anopen throat 28 of thelower tooth wheel 2 and theupper tooth wheel 3 into which theupstream strand 6 is laid. - Referring to
FIG. 3 , the rear view shows how the undulatedstrand 8 is held between theteeth 19 for a positive downstream feeding of thedownstream strand 7. In addition it can be seen how the upper bearinghousing 4 is mounted onto thetension control body 1 by means of themounting bracket 5 - The top of the feeder-system “A” is revealed in
FIG. 4 . It also shows theupstream strand 6 entering the feeder-system “A” and thedownstream strand 7 leaving it. It reveals the top side of themounting bracket 5 to which is fastened the upper bearinghousing 4. - The cross section of the feeder-system “A” in
FIG. 5 details the inside of the unit. Thecontrol rotor 9 is firmly mounted over thebottom shaft 12. The rotational velocity of thecontrol rotor 9 withlower tooth wheel 2 firmly connected control the feed rate of the unit by electromagnetic means (not shown). The effect of this is a control of the tension in thedownstream strand 7 in relation to theupstream strand 6. It also can be used to control the velocity of thedownstream strand 7. Thebottom shaft 12 is mounted in twobody bearings 10 which also maintain its axial position. Thetop shaft 13 is mounted in twotop wheel bearings 11 which in turn are mounted in theadjustment hub 18. Theadjustment hub 18 is provided with anexternal adjustment thread 14. By turning thisadjustment hub 18 in the internally threadedmounting bracket 5 its axial position can be adjusted in order to adjust the engagement of theteeth 19 on thelower tooth wheel 2 with theteeth 19 of theupper tooth wheel 3. Through this adjustment, the possibility is given to run finer as well as coarser strands through the feeder-system “A”. An adjustment lock-screw 15 clamps theadjustment hub 18 firmly onto themounting bracket 5 in order to maintain a adjusted setting. Thelower tooth wheel 2 is mounted onto thebottom shaft 12 by means of a lower mounting-flange 16 and theupper tooth wheel 3 is mounted onto thetop shaft 13 by means of the upper mounting-flange 17. - Referring to
FIG. 6 , the exploded view shows the individual sup-assemblies more clearly. The center lines demonstrate how the individual parts are positioned in assembled mode. - In
FIG. 7 thelower tooth wheel 2 and theupper tooth wheel 3 are shown separated to more clearly demonstrate how thestrand 36 relates to them. The undulated configuration is caused by theteeth 19 of both, thelower tooth wheel 2 and theupper tooth wheel 3. This zigzagging of the strand generates at each bending point additional friction which assists in the positive transport of the strand through the feeder-system “A”. The thickness of thetension teeth 19 can be designed in such a manner that they touch each other on both tooth flanks 35. - A variant of the clamping action is shown in
FIG. 8 . Rather than a fixed adjustment as shown particularly inFIG. 5 this variation incorporates a spring loaded downward clamping force induced by thetension spring 21 which presses theaxially floating hub 22 downward. The rate of the spring force can be adjusted by threading thespring nut 20 up or down on the fixed mountingplate 23. This arrangement allows theupper tooth wheel 3 to self-adjust according to the thickness and/or stiffness of the strand and thus prevents excess stressing of the undulatedstrand 8. -
FIG. 9 reveals another variation of clamping assistance for the strand material. The undulatedstrand 8 is pressed by theteeth 19 of theupper tooth wheel 3 into a soft elastomer orfoam material 31. This provides sufficient clamping force, together with the friction multiplying undulation to positively feed the strand by the feeder-system “A”. -
FIG. 10 shows another variation of the invention where a braking force is applied to theupper tooth wheel 3 by means of thebrake spring 25, pushing against thebrake disk 24. This generates sufficient drag on theupper tooth wheel 3 by pressing itstooth flank 35 against thetooth flank 35 of thelower tooth wheel 2. This pressure provides sufficient clamping force to the passingstrand 36 for slip-less feeding. It should be realized that the material of theteeth 19 can be composed of polyurethane or a similar elastic material. The braking force can be adjusted by threading theadjustment nut 26 up or down the fixed mountinghub 27. - In
FIG. 11 a cross-section through thelower tooth wheel 2 andupper tooth wheel 3 illustrate the slight skewing of the skewedaxis 30 against themain axis 29. The different portions of theteeth 19 are shown with the tooth lead-in 32 assuring that theupstream strand 6 is properly placed into theopen throat 28 of the two wheels. Thetooth apex 33 is the portion around which the strand 36 (not shown) is laid during its intermeshing with theteeth 19 of theupper tooth wheel 3. The absence of a shaft between the two disks, the constant intermeshing of thetooth nose 34 and the general shape of theteeth 19 prevents broken filament of thestrand 36 from moving into the center of thelower tooth wheel 2 andupper tooth wheel 3 and from wrapping itself around any rotating parts disks of the feeder-system “A”. - Although the invention has been described with reference to specific example embodiments, it will be appreciated that it is intended to cover all modifications and equivalents within the scope of the appended claims. It should also be understood that the present disclosure includes all possible combinations and applications of any individual features recited in any of the appended claims.
-
- feeder-system “A”
-
tension control body 1 -
lower tooth wheel 2 -
upper tooth wheel 3 - upper bearing
housing 4 - mounting
bracket 5 -
upstream strand 6 -
downstream strand 7 - undulated
strand 8 - control
rotor 9 -
body bearing 10 -
top wheel bearings 11 -
bottom shaft 12 -
top shaft 13 -
adjustment thread 14 - adjustment lock-
screw 15 - lower mounting-
flange 16 - upper mounting-
flange 17 -
adjustment hub 18 -
teeth 19 -
spring nut 20 -
tension spring 21 - axially floating
hub 22 - fixed mounting
plate 23 -
brake disk 24 -
brake spring 25 -
adjustment nut 26 - fixed mounting
hub 27 -
open throat 28 -
main axis 29 - skewed
axis 30 - elastomer or
foam material 31 - tooth lead-
in 32 -
tooth apex 33 -
tooth nose 34 -
tooth flank 35 -
strand 36
Claims (8)
1. A strand feeding device for transporting strand material comprising of:
(a) a pair of rotatable disks;
(b) the axis of the two rotatable disks skewed to each;
(c) the skewing of the two axis resulting that one portion of a rotatable disk is closer to the other rotatable disk on one side and further apart on the opposite side;
(d) supplying both rotatable disks with teeth on the surfaces where they face each other;
(e) intermeshing the teeth of one rotatable disks with the teeth of the other rotatable disks at the place where they are closer together;
(f) guiding a moving strand to a point between the two rotatable disks where they are further part;
(g) letting the strand run through the portion of the two rotatable disks where they intermesh.
2. A strand feeding device according to claim 1 where the rate of rotation of at least one rotatable disk is controlled.
3. A strand feeding device according to claim 1 where the clearance of the intermeshing teeth can be adjusted.
4. A strand feeding device according to claim 1 or 2 where the two rotatable disks are pressed together by an adjustable spring force;
5. A strand feeding device according to claim 1 or 2 where the rear portion of the teeth have an extension to prevent the strand from slipping towards the centers of the two disks.
6. A strand feeding device according to claim 1 where the teeth are made from elastomeric materials;
7. A strand feeding device according to claim 1 where an elastomeric foam cushion is placed between the teeth of one rotatable disk which presses against the teeth of the other rotatable disk in order to act as a clamp for the passing strand.
8. A method of feeding a strand by mechanical means comprising the steps of:
(a) application of a pair of disks
(b) providing each of the two disks with teeth facing each other;
(c) skewing the axis of the disks against each other in order to intermesh the teeth of the two disks in one area and leaving a gap between the teeth on the opposite side;
(d) guiding a moving strand into the gap between the two rotatable disks;
(h) letting the strand run through the portion of the two rotatable disks where they intermesh.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/454,167 US20100287994A1 (en) | 2009-05-14 | 2009-05-14 | Strand-Feeder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/454,167 US20100287994A1 (en) | 2009-05-14 | 2009-05-14 | Strand-Feeder |
Publications (1)
Publication Number | Publication Date |
---|---|
US20100287994A1 true US20100287994A1 (en) | 2010-11-18 |
Family
ID=43067395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/454,167 Abandoned US20100287994A1 (en) | 2009-05-14 | 2009-05-14 | Strand-Feeder |
Country Status (1)
Country | Link |
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US (1) | US20100287994A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2508457A3 (en) * | 2011-04-04 | 2014-04-02 | Kern Antriebstechnik GmbH | Thread supplier |
CN110255280A (en) * | 2019-06-19 | 2019-09-20 | 温州大学瓯江学院 | A kind of adjustable hawser dragger |
CN116475541A (en) * | 2023-06-26 | 2023-07-25 | 山东智迈德智能科技有限公司 | Submerged arc welding wire reel supporting device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US656428A (en) * | 1900-05-18 | 1900-08-21 | William S Sherd | Twine-tension device. |
US4015447A (en) * | 1975-01-03 | 1977-04-05 | Morris Philip | Method and apparatus for positively feeding yarn |
-
2009
- 2009-05-14 US US12/454,167 patent/US20100287994A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US656428A (en) * | 1900-05-18 | 1900-08-21 | William S Sherd | Twine-tension device. |
US4015447A (en) * | 1975-01-03 | 1977-04-05 | Morris Philip | Method and apparatus for positively feeding yarn |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2508457A3 (en) * | 2011-04-04 | 2014-04-02 | Kern Antriebstechnik GmbH | Thread supplier |
CN110255280A (en) * | 2019-06-19 | 2019-09-20 | 温州大学瓯江学院 | A kind of adjustable hawser dragger |
CN116475541A (en) * | 2023-06-26 | 2023-07-25 | 山东智迈德智能科技有限公司 | Submerged arc welding wire reel supporting device |
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Legal Events
Date | Code | Title | Description |
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STCB | Information on status: application discontinuation |
Free format text: EXPRESSLY ABANDONED -- DURING EXAMINATION |