US20100086352A1 - Dowel bar loader - Google Patents
Dowel bar loader Download PDFInfo
- Publication number
- US20100086352A1 US20100086352A1 US12/245,527 US24552708A US2010086352A1 US 20100086352 A1 US20100086352 A1 US 20100086352A1 US 24552708 A US24552708 A US 24552708A US 2010086352 A1 US2010086352 A1 US 2010086352A1
- Authority
- US
- United States
- Prior art keywords
- dowel
- dowel bar
- outlet
- loader
- bars
- 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
- 230000007246 mechanism Effects 0.000 claims abstract description 34
- 125000006850 spacer group Chemical group 0.000 claims abstract description 22
- 230000033001 locomotion Effects 0.000 claims abstract description 8
- 230000008859 change Effects 0.000 claims abstract description 7
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- 230000010006 flight Effects 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 241000490025 Schefflera digitata Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/04—Devices for laying inserting or positioning reinforcing elements or dowel bars with or without joint bodies; Removable supports for reinforcing or load transfer elements; Devices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcements
Abstract
A dowel bar loader comprising an inlet for receiving dowel bars, an outlet for delivering dowel bars, and a serpentine path connecting the inlet to the outlet. The path includes at least three changes in direction between the inlet and the outlet. In preferred embodiments, the path can include seven changes in direction or more. In one embodiment, the changes in direction comprises an angle change of at least about twenty-five degrees. The dowel bar loader further includes a control mechanism positioned to control movement of dowel bars in the path, and a spacer mechanism for spacing the dowel bars from each other in preparation for delivery to the dowel bar inserter. Preferably, the control mechanism is upstream of the spacer mechanism and spaced from the outlet. In one embodiment, the control mechanism comprises a control wheel that rotates completely around during normal operation.
Description
- The present invention relates generally to the field of concrete paving, and more specifically to a dowel bar loader that provides dowel bars to a concrete paver.
- Concrete slipform pavers are used to create concrete slabs to form load-bearing surfaces, such as roads. Such pavers commonly include a tractor that moves a slipform over freshly-laid concrete to create a smooth slab of concrete.
- In the process of forming concrete slabs, it is often desired to provide reinforcement to the concrete at certain locations, such as the joints between adjacent slabs. This is typically done by embedding dowel bars across the location of the joint. In order to facilitate the insertion of dowel bars, mechanisms called dowel bar inserters are commonly attached to the slipform pavers and are designed to insert the dowel bars into the freshly-laid concrete. An example of a dowel bar inserter is disclosed in U.S. Pat. No. 6,390,726, which is incorporated herein by reference in its entirety.
- Dowel bar inserters must be provided with a supply of dowel bars. This is commonly done manually by having a worker positioned near the side of the dowel bar inserter and next to a supply of dowel bars. The worker must periodically load the dowel bars into the dowel bar inserter. This process can be very slow, and can limit the speed of the entire concrete paver.
- In order to remedy this problem, mechanisms called dowel bar loaders can be used to load the dowel bars into dowel bar inserters. Dowel bar loaders are commonly mounted to the dowel bar inserters, and provide a faster way to load dowel bars into a dowel bar inserter. Some dowel bar loaders are very complex and expensive mechanisms, and can cause mechanical malfunctions, such as jamming of dowel bars.
- The present invention provides a dowel bar loader that effectively loads dowel bars into a dowel bar inserter. In one embodiment, the dowel bar loader comprises an inlet for receiving dowel bars, an outlet for delivering dowel bars (e.g., to the dowel bar inserter), and a serpentine path connecting the inlet to the outlet. The serpentine path includes at least three changes in direction between the inlet and the outlet. In preferred embodiments, the path can include as many as seven changes in direction, or more. In one embodiment, the changes in direction comprises an angle change of at least about twenty-five degrees, preferably at least about thirty-five degrees, and more preferably at least about forty-five degrees.
- In another aspect of the invention, the dowel bar loader further includes a control mechanism positioned to control movement of dowel bars in the path, and a spacer mechanism for spacing the dowel bars from each other in preparation for delivery to the dowel bar inserter. Preferably, the control mechanism is upstream of the spacer mechanism and spaced from the outlet.
- In one embodiment, the control mechanism comprises a control sprocket having multiple fingers, at least one of the fingers being positioned at least partially in the path. Preferably, the control sprocket rotates completely around during normal operation. The control mechanism can also include a detent mechanism for stopping movement of dowel bars in the path.
- Other aspects of the invention will become apparent by consideration of the detailed description and accompanying drawings.
-
FIG. 1 is a partial exploded view of a dowel bar loader embodying the present invention coupled with a prior art dowel bar inserter. -
FIG. 2 is an enlarged rear perspective view of the dowel bar loader ofFIG. 1 . -
FIG. 3 is an enlarged perspective view of the dowel bar loader ofFIG. 1 . -
FIG. 4 is a front view of the dowel bar loader ofFIG. 1 . -
FIG. 5 is a side view of the dowel bar loader ofFIG. 1 . -
FIG. 6 is a section view taken along line 6-6 inFIG. 4 . -
FIG. 7 is a section view taken along line 7-7 inFIG. 4 . - Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of “including,” “comprising,” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless specified or limited otherwise, the terms “mounted,” “connected,” “supported,” and “coupled” and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings. Further, unless otherwise noted, “connected” and “coupled” are not restricted to physical or mechanical connections or couplings.
-
FIG. 1 illustrates adowel bar loader 10 embodying the present invention exploded off the side of adowel bar inserter 12. The illustrateddowel bar inserter 12 is manufactured and sold by Guntert & Zimmerman. Thedowel bar inserter 12 is mounted to themain frame 14 of a concrete paver and includes acarriage 16 that is designed to move relative to themain frame 14, toward and away from the paver. When thedowel bar inserter 12 is insertingdowel bars 26 in the concrete (the “inserting operation”), thecarriage 16 is moving relative to themain frame 14 and is substantially stationary relative to the laid concrete. When thedowel bar inserter 12 is being loaded with dowel bars 26 (the “loading operation”), it is substantially stationary relative to themain frame 14 and in the loading position shown inFIG. 1 . - The
carriage 16 includes a loading section having twoopposing chains 20 that each includes a plurality offlights 22. Theflights 22 on one chain are in opposing relations toflights 22 on the other chain, and thechains 20 are driven synchronously such that each pair offlights 22 defines a pocket 24 (seeFIG. 5 ) into which adowel bar 26 can be loaded. The pockets 24 are spaced from each other by a pitch P (seeFIG. 5 ). In this loading section, thechains 20 are vertically positioned such that the pockets 24 are vertically oriented relative to each other. - The
dowel bar loader 10 is mounted to thecarriage 16 adjacent to the chain-drivenflights 22 such thatdowel bars 26 in thedowel bar loader 10 can be loaded into the pockets 24. Thedowel bar loader 10 includes twoside plates 28, twoguide plates 30, alower shaft 32 extending through all four plates, and anupper shaft 34 extending through all four plates. Eachside plate 28 is coupled with acorresponding guide plate 30 by fourconnecting plates 36. Amounting flange 38 is secured to the outer surface of eachside plate 28 to facilitate securing thedowel bar loader 10 to thecarriage 16 of thedowel bar inserter 12. - With reference to
FIG. 3 , eachguide plate 30 includes aserpentine slot 40 from aninlet 42 at the top of the plate to anoutlet 44 at the bottom of the plate. Because eachslot 40 extends all the way through thecorresponding guide plate 30, eachguide plate 30 actually comprises two distinct plates that cooperatively define theslot 40. Theslot 40 is sized to allow thedowel bars 26 to be inserted at theinlet 42 and slide down theslot 40 toward theoutlet 44. - Referring to
FIG. 6 , theslot 40 defines a path having upstream and downstream directions defined by theinlet 42 andoutlet 44, respectively. The path changes direction several times between theinlet 42 and theoutlet 44. More specifically, the illustrated path changes directions at least seven times, which each change of direction occurring at a corner C. At each corner, the change in direction δ is about forty-five degrees. - A control mechanism in the form of a pair of
control sprockets 50 is secured to theupper shaft 34 between the twoguide plates 30 and spaced upstream from theoutlet 44. Each control sprocket 50 rotates with theupper shaft 34 in a single direction during normal operation. Thecontrol sprocket 50 includes sevenfingers 52 defining sevencavities 54 that are each sized to accommodate adowel bar 26. As shown inFIG. 6 , thefingers 52 of thecontrol sprockets 50 extend into theslot 40 such that thefingers 52 will engage adowel bar 26 sliding down theslot 40. In other embodiments, the control mechanism may be a control wheel or another mechanism, as desired. - Referring to
FIG. 3 , a detent mechanism in the form of adetent member 60 is secured to theupper shaft 34 on the outside of one of theside plates 28. Thedetent member 60 rotates with theupper shaft 34 and includesmultiple notches 62. Alatch member 64 is pivotally attached to the side plate adjacent thedetent member 60 and is movable between a latched position, where theupper shaft 34 andcontrol sprockets 50 are prevented from rotating, and an unlatched position, where theupper shaft 34 andcontrol sprockets 50 are allowed to rotate. In this manner, the passage of dowel bars 26 through theslot 40 can be controlled, as described below in more detail. An actuator in the form of asolenoid 66, is coupled to thelatch member 64 for movement between the latched and unlatched positions. It should be understood that the illustrateddetent member 60 andlatch member 64 is one way of controlling the movement of the dowel bars 26 in theslot 40, but other mechanisms are possible. - With further reference to
FIG. 6 , a spacer mechanism in the form of a pair ofspacer sprockets 70 is positioned downstream of the control mechanism and near theoutlet 44. The spacer sprockets 70 are secured to thelower shaft 32 outboard of theguide plates 30 and inboard of the side plates 28 (seeFIG. 4 ). Eachspacer sprocket 70 rotates with thelower shaft 32 and includes sixspacers 72 defining sixrecesses 74 that are sized to receive adowel bar 26. As shown inFIG. 6 , thespacers 72 of thespacer sprocket 70 extend into theslot 40 such that thespacers 72 will engage adowel bar 26 sliding down theslot 40. Thespacers 72 are dimensioned so that therecesses 74 are spaced from each other by a distance D (FIG. 7 ) that approximately corresponds with the pitch P (FIG. 5 ) of the pockets 24 on thedowel bar inserter 12. This feature facilitates spacing of the dowel bars 26 for proper insertion into the pockets 24. In other embodiments, the spacer mechanism may be a spacer wheel or another mechanism, as desired. - Referring to
FIGS. 1 and 2 , adowel bar hopper 80 is pivotally mounted to themain frame 14 at apivot shaft 82. Thehopper 80 is manually pivotable about thepivot shaft 82 between a loading position (shown inFIGS. 1 and 2 ) and an unloading position (rotated slightly clockwise inFIG. 1 and counter-clockwise inFIG. 2 ). The illustratedhopper 80 is biased by gravity toward the loading position into contact with themain frame 14. Thehopper 80 is designed to be filled withdowel bars 26 in preparation for providingdowel bars 26 to thedowel bar loader 10. - A dowel bar chute 90 (
FIG. 1 ) is mounted to themain frame 14 and is aligned with thehopper 80. Thechute 90 is designed to receivedowel bars 26 from the hopper 80 (when thehopper 80 is in the unloading position) and deliver the dowel bars 26 by gravity to the top of thedowel bar loader 10. - In operation, dowel bars 26 are inserted into the
hopper 80 in the loading position in preparation for delivery to thedowel bar loader 10. Typically, insertion of the dowel bars 26 into thehopper 80 would be done manually while thedowel bar inserter 12 is performing the inserting operation. Because thehopper 80 is fixed to themain frame 14, it is stationary relative to themain frame 14 at all times, which facilitates loading of thehopper 80 by a worker sitting on themain frame 14. Preferably, the precise number of dowel bars 26 needed for a single inserting operation is loaded into thehopper 80. - After the previous inserting operation is completed, the
carriage 16 of thedowel bar loader 10 returns to the loading position, where it will stay for a period of time. While in the loading position, the worker moves thehopper 80 to the unloading position, which causes the dowel bars 26 to fall onto thechute 90 and move by gravity toward theinlet 42 of thedowel bar loader 10. The dowel bars 26 will travel down theslot 40 until thefirst dowel bar 26 reaches thecontrol sprocket 50, where it will be held due to the engagement of thelatch member 64 with thedetent member 60. - When it is desired to load the dowel bars 26 into the
dowel bar inserter 12, the worker moves thelatch member 64 to the unlatched position (e.g., by pushing a button to actuate the solenoid 66), which allows thecontrol sprockets 50 to rotate and allows the dowel bars 26 to continue sliding down theslot 40. Thefirst dowel bar 26 will enter a recess between twospacers 72 on thespacer sprockets 70. Gravity will cause thespacer sprockets 70 to rotate, thus allowing thedowel bar 26 to move toward and into a pocket 24 of thedowel bar inserter 12. As the chain of thedowel bar inserter 12 is moved, the next pocket 24 of thedowel bar inserter 12 is aligned with the spacer wheel, and thenext dowel bar 26 in theslot 40 will move into that pocket 24 by gravity. It is noted that thespacers 72 maintain a proper spacing of the dowel bars 26 such that the dowel bars 26 fall easily into the pockets 24 of thedowel bar inserter 12. This process continues until each of the pockets 24 of thedowel bar inserter 12 is provided with adowel bar 26. Thedowel bar inserter 12 then inserts the dowel bars 26 into the laid concrete, as is generally known in the art. - Thus, the invention provides, among other things, a
dowel bar hopper 80,chute 90, and loader that facilitates loading of dowel bars 26 into adowel bar inserter 12. Various features and advantages of the invention are set forth in the following claims.
Claims (15)
1. A dowel bar loader adapted to provide dowel bars to a dowel bar inserter, the loader comprising:
an inlet for receiving dowel bars;
an outlet for delivering dowel bars; and
a serpentine path connecting the inlet to the outlet, the serpentine path including at least three changes in direction between the inlet and the outlet.
2. A dowel bar loader as claimed in claim 1 , wherein the path includes at least four changes in direction between the inlet and the outlet.
3. A dowel bar loader as claimed in claim 1 , wherein the path includes at least five changes in direction between the inlet and the outlet.
4. A dowel bar loader as claimed in claim 1 , wherein the path includes at least six changes in direction between the inlet and the outlet.
5. A dowel bar loader as claimed in claim 1 , wherein each of the changes in direction comprises an angle change of at least about twenty-five degrees.
6. A dowel bar loader as claimed in claim 1 , wherein each of the changes in direction comprises an angle change of at least about thirty-five degrees.
7. A dowel bar loader as claimed in claim 1 , wherein each of the changes in direction comprises an angle change of at least about forty-five degrees.
8. A dowel bar loader as claimed in claim 1 , further comprising a control mechanism positioned to control movement of dowel bars in the path.
9. A dowel bar loader as claimed in claim 1 , wherein the control mechanism comprises a control sprocket having multiple fingers, at least one of the fingers being positioned at least partially in the path.
10. A dowel bar loader assembly adapted to provide dowel bars to a dowel bar inserter, the loader comprising:
an inlet for receiving dowel bars;
an outlet for delivering dowel bars;
a path connecting the inlet to the outlet;
a control mechanism for controlling the movement of dowel bars in the path; and
a spacer mechanism for spacing the dowel bars from each other in preparation for delivery to the dowel bar inserter.
11. A dowel bar loader as claimed in claim 10 , wherein the inlet and outlet define upstream and downstream directions of the path, respectively, and where the control mechanism is upstream of the spacer mechanism.
12. A dowel bar loader as claimed in claim 10 , wherein the control mechanism includes a detent mechanism for stopping movement of dowel bars in the path.
13. A dowel bar loader as claimed in claim 10 , wherein the control mechanism comprises a control sprocket having multiple fingers, at least one of the fingers being positioned at least partially in the path.
14. A dowel bar loader as claimed in claim 13 , wherein the control sprocket rotates completely around during normal operation.
15. A dowel bar loader as claimed in claim 10 , wherein the control mechanism is spaced upstream from the outlet.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/245,527 US20100086352A1 (en) | 2008-10-03 | 2008-10-03 | Dowel bar loader |
PCT/US2009/058318 WO2010039595A1 (en) | 2008-10-03 | 2009-09-25 | Dowel bar loader |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/245,527 US20100086352A1 (en) | 2008-10-03 | 2008-10-03 | Dowel bar loader |
Publications (1)
Publication Number | Publication Date |
---|---|
US20100086352A1 true US20100086352A1 (en) | 2010-04-08 |
Family
ID=42073825
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/245,527 Abandoned US20100086352A1 (en) | 2008-10-03 | 2008-10-03 | Dowel bar loader |
Country Status (2)
Country | Link |
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US (1) | US20100086352A1 (en) |
WO (1) | WO2010039595A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110058899A1 (en) * | 2009-09-09 | 2011-03-10 | Guntert & Zimmerman Const. Div., Inc. | Paver Having Dowel Bar Inserter With Automated Dowel Bar Feeder |
US11193244B2 (en) * | 2017-12-29 | 2021-12-07 | Guntert & Zimmerman Const. Div., Inc. | Extended width dowel bar inserter |
Citations (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US905401A (en) * | 1908-09-12 | 1908-12-01 | Clarence R Pope | Vending-machine. |
US2780376A (en) * | 1955-03-01 | 1957-02-05 | Ralph M Sanders | Machine for continuously laying and joining pipe sections |
US3508669A (en) * | 1969-02-12 | 1970-04-28 | William H Cook | Storage facility for pipes and similar articles |
US3853444A (en) * | 1970-04-27 | 1974-12-10 | Hastings Dynameld Corp | Automatic re-bar installer |
US4493584A (en) * | 1981-12-17 | 1985-01-15 | Guntert & Zimmerman Const. Div., Inc. | Apparatus and process for dowel insertions |
US4995758A (en) * | 1989-07-31 | 1991-02-26 | Cmi Corporations | Center bar inserter |
US5190397A (en) * | 1991-03-18 | 1993-03-02 | Gomaco Corporation | Dowel bar insertion method and apparatus for concrete paving machine |
US5209602A (en) * | 1991-06-10 | 1993-05-11 | Gomaco Corporation | Method and apparatus for inserting dowel bars for a concrete slip forming machine |
US5318377A (en) * | 1992-06-18 | 1994-06-07 | Cmi Corporation | Paving machine with midline dowel bar insertion |
US5405212A (en) * | 1992-06-18 | 1995-04-11 | Cmi Corporation | Paving machine with drop-then-stop dowel bar insertion |
US5588776A (en) * | 1994-01-21 | 1996-12-31 | Cmi Corporation | Paving machine having automatic metering screed control |
US6074153A (en) * | 1997-08-25 | 2000-06-13 | Allen; Jean-Luc | Drill rods feeding device |
US6085852A (en) * | 1995-02-22 | 2000-07-11 | The Charles Machine Works, Inc. | Pipe handling device |
US6092977A (en) * | 1998-07-22 | 2000-07-25 | Japan Tobacco Inc. | Rod-shaped article supplying apparatus |
US6152670A (en) * | 1997-02-03 | 2000-11-28 | Valmet-Karlstad Ab | Storage arrangement for cores of a papermaking machine |
US6176643B1 (en) * | 1999-10-01 | 2001-01-23 | Guntert & Zimmerman Const. Div. | Detachable dowel bar inserter kit for portable slip form paver |
US20010041094A1 (en) * | 1999-10-01 | 2001-11-15 | Guntert Ronald M. | Dowel bar inserter kit having chain feeder |
US7037035B2 (en) * | 2001-08-13 | 2006-05-02 | Drion Constructie | Method and machine for forming a concrete path or the like, as well as device for inserting dowels applied herewith |
US20060177269A1 (en) * | 2005-02-10 | 2006-08-10 | Kramer Donald R | Concrete slab dowel system and method for making and using same |
US7111754B1 (en) * | 1999-09-13 | 2006-09-26 | Namsys, Inc. | Coin roll dispenser and system incorporating same |
-
2008
- 2008-10-03 US US12/245,527 patent/US20100086352A1/en not_active Abandoned
-
2009
- 2009-09-25 WO PCT/US2009/058318 patent/WO2010039595A1/en active Application Filing
Patent Citations (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US905401A (en) * | 1908-09-12 | 1908-12-01 | Clarence R Pope | Vending-machine. |
US2780376A (en) * | 1955-03-01 | 1957-02-05 | Ralph M Sanders | Machine for continuously laying and joining pipe sections |
US3508669A (en) * | 1969-02-12 | 1970-04-28 | William H Cook | Storage facility for pipes and similar articles |
US3853444A (en) * | 1970-04-27 | 1974-12-10 | Hastings Dynameld Corp | Automatic re-bar installer |
US4493584A (en) * | 1981-12-17 | 1985-01-15 | Guntert & Zimmerman Const. Div., Inc. | Apparatus and process for dowel insertions |
US4995758A (en) * | 1989-07-31 | 1991-02-26 | Cmi Corporations | Center bar inserter |
US5190397A (en) * | 1991-03-18 | 1993-03-02 | Gomaco Corporation | Dowel bar insertion method and apparatus for concrete paving machine |
US5209602A (en) * | 1991-06-10 | 1993-05-11 | Gomaco Corporation | Method and apparatus for inserting dowel bars for a concrete slip forming machine |
US5318377A (en) * | 1992-06-18 | 1994-06-07 | Cmi Corporation | Paving machine with midline dowel bar insertion |
US5405212A (en) * | 1992-06-18 | 1995-04-11 | Cmi Corporation | Paving machine with drop-then-stop dowel bar insertion |
US5588776A (en) * | 1994-01-21 | 1996-12-31 | Cmi Corporation | Paving machine having automatic metering screed control |
US6085852A (en) * | 1995-02-22 | 2000-07-11 | The Charles Machine Works, Inc. | Pipe handling device |
US6543551B1 (en) * | 1995-02-22 | 2003-04-08 | The Charles Machine Works, Inc. | Pipe handling device |
US6152670A (en) * | 1997-02-03 | 2000-11-28 | Valmet-Karlstad Ab | Storage arrangement for cores of a papermaking machine |
US6074153A (en) * | 1997-08-25 | 2000-06-13 | Allen; Jean-Luc | Drill rods feeding device |
US6092977A (en) * | 1998-07-22 | 2000-07-25 | Japan Tobacco Inc. | Rod-shaped article supplying apparatus |
US7111754B1 (en) * | 1999-09-13 | 2006-09-26 | Namsys, Inc. | Coin roll dispenser and system incorporating same |
US6176643B1 (en) * | 1999-10-01 | 2001-01-23 | Guntert & Zimmerman Const. Div. | Detachable dowel bar inserter kit for portable slip form paver |
US20010041094A1 (en) * | 1999-10-01 | 2001-11-15 | Guntert Ronald M. | Dowel bar inserter kit having chain feeder |
US6390726B1 (en) * | 1999-10-01 | 2002-05-21 | Guntert & Zimmerman Const. Div. | Dowel bar inserter kit having chain feeder |
US6390727B1 (en) * | 1999-10-01 | 2002-05-21 | Guntert & Zimmerman Const. Div., Inc. | Dowel bar inserter kit having chain feeder |
US6579037B2 (en) * | 1999-10-01 | 2003-06-17 | Guntert & Zimmerman Const. Div. | Dowel bar inserter kit having chain feeder |
US7037035B2 (en) * | 2001-08-13 | 2006-05-02 | Drion Constructie | Method and machine for forming a concrete path or the like, as well as device for inserting dowels applied herewith |
US20060177269A1 (en) * | 2005-02-10 | 2006-08-10 | Kramer Donald R | Concrete slab dowel system and method for making and using same |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110058899A1 (en) * | 2009-09-09 | 2011-03-10 | Guntert & Zimmerman Const. Div., Inc. | Paver Having Dowel Bar Inserter With Automated Dowel Bar Feeder |
US8382396B2 (en) * | 2009-09-09 | 2013-02-26 | Guntert & Zimmerman Const. Div., Inc. | Paver having dowel bar inserter with automated dowel bar feeder |
US9039322B2 (en) | 2009-09-09 | 2015-05-26 | Guntert & Zimmerman Const. Div., Inc. | Paver having dowel bar inserter with automated dowel bar feeder |
US9359726B2 (en) | 2009-09-09 | 2016-06-07 | Guntert & Zimmerman Canst. Div., Inc. | Paver having dowel bar inserter with automated dowel bar feeder |
US11193244B2 (en) * | 2017-12-29 | 2021-12-07 | Guntert & Zimmerman Const. Div., Inc. | Extended width dowel bar inserter |
Also Published As
Publication number | Publication date |
---|---|
WO2010039595A1 (en) | 2010-04-08 |
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Owner name: MICHELS CORPORATION,WISCONSIN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GUILBAULT, DONNY;O'BRIEN, JACK;ZEDLER, JIM;SIGNING DATES FROM 20081105 TO 20081112;REEL/FRAME:021827/0876 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |