EP2181809A1 - Fuel driven fastening tool - Google Patents
Fuel driven fastening tool Download PDFInfo
- Publication number
- EP2181809A1 EP2181809A1 EP09171918A EP09171918A EP2181809A1 EP 2181809 A1 EP2181809 A1 EP 2181809A1 EP 09171918 A EP09171918 A EP 09171918A EP 09171918 A EP09171918 A EP 09171918A EP 2181809 A1 EP2181809 A1 EP 2181809A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- combustion chamber
- resistance element
- setting tool
- ignition 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.)
- Withdrawn
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 20
- 238000002485 combustion reaction Methods 0.000 claims abstract description 23
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 101100242909 Streptococcus pneumoniae (strain ATCC BAA-255 / R6) pbpA gene Proteins 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 1
- 229910000570 Cupronickel Inorganic materials 0.000 abstract 1
- 239000011651 chromium Substances 0.000 abstract 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 abstract 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- -1 womanium Chemical compound 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 5
- 230000005670 electromagnetic radiation Effects 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 3
- 230000015654 memory Effects 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C1/00—Hand-held nailing tools; Nail feeding devices
- B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
Definitions
- the present invention relates to a combustion-powered setting tool, the type mentioned in the preamble of claim 1.
- Such setting devices have a combustion chamber in which a portion of liquefied petroleum gas or another vaporizable fuel with an oxidizing agent such. B. ambient air, is combustible.
- a setting piston displaceably guided in a piston guide is driven in order to drive a fastening element into an article.
- a combustion-powered setting tool which has control electronics for controlling the ignition and the fuel injection.
- the setting tool has a z. B. formed as a conventional spark plug igniter on.
- a disadvantage of this solution is that on the one hand the electronics for generating the high voltage is expensive and expensive to manufacture and on the other hand a strong electromagnetic radiation (EMC) is generated, which influence the control electronics and errors or malfunctions in the electrical system of the setting tool can lead.
- EMC electromagnetic radiation
- Processors, E-PROMS and / or memory can be set in undefined states. There is also the danger that the memories could be overwritten or deleted.
- a common cause of failure in such combustion-powered setting tools is a short circuit between electrodes of the spark plug. The short circuit can be done by a conductive dirt layer, which is built up, inter alia, by moisture from the combustion residues. Further, oil added to the fuel gas as a lubricant may accumulate on the electrodes and form a bridge preventing generation of a spark.
- the object of the present invention is to provide a combustion-powered setting tool of the aforementioned type which avoids the disadvantages, which is insensitive to contamination, which ignites reliably and which can be produced inexpensively.
- the ignition device has a resistance element.
- the resistance element is z. B. formed as a resistance wire or resistor track and is after triggering the setting device, z. B. via a trigger switch, energized by an electronic control system, whereby it heats up and ignites the air-fuel gas mixture contained in the combustion chamber within about 10 - 100 ms after triggering.
- the temperature of the resistance element reaches at least approximately 500 ° C.
- EMC electrical disturbances
- the resistance element is designed as a helical wire, whereby a large contact surface between the hot filament and the gas mixture to be ignited is available.
- the relatively long wire can be accommodated in a relatively small space.
- the resistance element contains at least one metal of the group Cu, Ni, Wo, Cr, Mn, C, Si.
- the resistance element consists of an alloy of one or more of these metals.
- the resistance element has an electrical resistance of 0.5 to 10 ohms / mm [exp2].
- the ignition current for the ignition device generated by a control unit is between 0.1 and 50 amperes.
- the hand-held, combustion-powered setting tool 10 has a one-piece or multi-part housing, generally designated 11, in which a drive 12 operable by means of an air-fuel mixture is arranged.
- a fastener such as a nail, bolts, etc. are driven into a workpiece.
- the fasteners may, for. B. be stored in a magazine on setting tool 10.
- the drive includes u. a. a combustion chamber 15 and a guide cylinder 13, in which a setting piston 14 is arranged axially displaceable.
- the combustion chamber 15 is in the illustrated initial state circumferentially by a combustion chamber sleeve 28, and axially at a first end of the setting piston 14 and an annular combustion chamber wall 29 and at a second end of a combustion chamber rear wall 30 which is formed as a cylinder head limited.
- An arranged in the combustion chamber 15 and driven by a motor 17 fan 16 serves both to generate a turbulent flow regime of a located in the closed combustion chamber 15 air-fuel mixture and the rinsing of the open combustion chamber 15 with fresh air after the setting process.
- the motor 17 is mounted on the combustion chamber rear wall 30, which acts as a closure for the axially displaceable combustion chamber sleeve 28.
- a trigger switch 19 is arranged, via which an arranged in the combustion chamber 15 ignition device 26 mediated via an electronic control unit 25 is triggered when the setting tool 10 pressed against a workpiece while a switching means 24 in the mouth region 27 of the setting device 10th is activated.
- the ignition device 26 is electrically connected to the control electronics 25 via a line 41.
- the ignition device 26 has a designed as a helical wire resistance element 36 which is disposed between a first electrode 31 and a second electrode 32 of the ignition device 26 and for igniting an air-fuel mixture in the combustion chamber via a supplied by the control electronics 25 Zündstrom is heated.
- the resistance element 36 has an electrical resistance of 0.5 to 10 ohms / mm [exp2] and includes a metal of the group Cu, Ni, Where, Cr, Mn, C, Si.
- the electrodes 31, 32 are embedded in an insulator body 33 as a carrier element.
- the setting tool 10 can be operated with a fuel gas or with a vaporizable liquid fuel, the / in a fuel reservoir 20, such as. B. a fuel can, is provided.
- the fuel reservoir 20 is connected via a fuel line 22 to a fuel inlet 23 in the combustion chamber 15.
- a metering device 21 such. B. a metering valve, interposed, via which a control of the fuel supply to the combustion chamber 15 takes place.
- an electrical energy source 40 such. As an accumulator, available.
- the ignition device 26 and the metering device 21 are controlled electronically via the control electronics designated overall by 25.
- the control electronics 25 has z. B. one or more microprocessors for data processing and control of the various electrical device functions and is connected via an electrical supply line 44 to the electrical energy source 40.
- a generated by the control electronics 25 ignition current for the ignition device 26 is preferably between 0.1 and 50 amps.
Abstract
Description
Die vorliegende Erfindung betrifft ein brennkraftbetriebenes Setzgerät, der im Oberbegriff von Patentanspruch 1 genannten Art.The present invention relates to a combustion-powered setting tool, the type mentioned in the preamble of claim 1.
Derartige Setzgeräte weisen eine Brennkammer auf, in der eine Portion Flüssiggas oder ein anderer verdampfbarer Brennstoff mit einem Oxidationsmittel, wie z. B. Umgebungsluft, verbrennbar ist. Mittels der Verbrennungsenergie wird ein in einer Kolbenführung versetzbar geführter Setzkolben angetrieben, um ein Befestigungselement in einen Gegenstand einzutreiben.Such setting devices have a combustion chamber in which a portion of liquefied petroleum gas or another vaporizable fuel with an oxidizing agent such. B. ambient air, is combustible. By means of the combustion energy, a setting piston displaceably guided in a piston guide is driven in order to drive a fastening element into an article.
Aus der
Von Nachteil bei dieser Lösung ist, dass zum einen die Elektronik zur Erzeugung der Hochspannung teuer und aufwändig in der Herstellung ist und zum anderen eine starke elektromagnetische Strahlung (EMV) erzeugt wird, die die Steuerelektronik beeinflussen und zu Fehlern oder Fehlfunktionen im elektrischen System des Setzgerätes führen kann. Prozessoren, E-PROMS und/oder Speicher können dabei in undefinierte Zustände gesetzt werden. Bei den Speichern besteht ferner die Gefahr, dass sie überschrieben oder gelöscht werden könnten. Ausserdem ist eine häufige Ausfallursache bei derartigen brennkraftbetriebenen Setzgeräten ein Kurzschluss zwischen en Elektroden der Zündkerze. Der Kurzschluss kann dabei durch eine leitende Schmutzschicht, die u. a. durch Feuchtigkeit aus den Verbrennungsrückständen aufgebaut ist, erfolgen. Ferner kann sich Öl, welches dem Brenngas als Schmiermittel zugesetzt ist, an den Elektroden sammeln und eine Brücke bilden, die den Aufbau eines Zündfunkens verhindert.A disadvantage of this solution is that on the one hand the electronics for generating the high voltage is expensive and expensive to manufacture and on the other hand a strong electromagnetic radiation (EMC) is generated, which influence the control electronics and errors or malfunctions in the electrical system of the setting tool can lead. Processors, E-PROMS and / or memory can be set in undefined states. There is also the danger that the memories could be overwritten or deleted. In addition, a common cause of failure in such combustion-powered setting tools is a short circuit between electrodes of the spark plug. The short circuit can be done by a conductive dirt layer, which is built up, inter alia, by moisture from the combustion residues. Further, oil added to the fuel gas as a lubricant may accumulate on the electrodes and form a bridge preventing generation of a spark.
Die Aufgabe der vorliegenden Erfindung liegt darin, ein brennkraftbetriebenes Setzgerät der vorgenannten Art bereitzustellen, das die Nachteile vermeidet, das verschmutzungsunempfindlich ist, das zuverlässig zündet und das kostengünstig hergestellt werden kann.The object of the present invention is to provide a combustion-powered setting tool of the aforementioned type which avoids the disadvantages, which is insensitive to contamination, which ignites reliably and which can be produced inexpensively.
Diese Aufgabe wird durch ein brennkraftbetriebenes Setzgerät nach Anspruch 1 gelöst. Demnach weist die Zündeinrichtung ein Widerstandselement auf. Das Widerstandselement ist z. B. als Widerstandsdraht oder Widerstandsbahn ausgebildet und wird nach einem Auslösen des Setzgerätes, z. B. über einen Triggerschalter, über eine Steuerelektronik bestromt, wodurch er sich erwärmt und das in der Brennkammer enthaltene Luft-Brenngasgemisch innert ca. 10 - 100 ms nach dem Auslösen entzündet. Die Temperatur des Widerstandselements erreicht dabei wenigstens ca. 500° C. Durch das Widerstandselement als zündungswirksames Element der Zündeinrichtung kann ausserdem eine preiswerte und technisch einfache Steuerungselektronik verwendet werden. Ferner entstehen bei der Zündung keine elektrischen Störungen (EMV), die zu Fehlern der Elektronik führen könnten. Eine Zündung ist vorteilhaft auch dann noch möglich, wenn sich Ölrückstände oder andere Verschmutzungen an der Zündeinrichtung gesammelt haben.This object is achieved by a combustion-powered setting tool according to claim 1. Accordingly, the ignition device has a resistance element. The resistance element is z. B. formed as a resistance wire or resistor track and is after triggering the setting device, z. B. via a trigger switch, energized by an electronic control system, whereby it heats up and ignites the air-fuel gas mixture contained in the combustion chamber within about 10 - 100 ms after triggering. In this case, the temperature of the resistance element reaches at least approximately 500 ° C. By virtue of the resistance element as the ignition-triggering element of the ignition device, an inexpensive and technically simple control electronics can also be used. Furthermore, there are no electrical disturbances (EMC) during ignition, which could lead to errors in the electronics. An ignition is advantageously still possible if oil residues or other contaminants have accumulated on the ignition device.
Vorteilhaft ist das Widerstandselement als Wendeldraht ausgebildet, wodurch eine grosse Kontaktoberfläche zwischen dem heissen Glühdraht und dem zu zündenden Gasgemisch zur Verfügung steht. Der relativ lange Draht kann dabei in einem relativ kleinen Bauraum untergebracht werden.Advantageously, the resistance element is designed as a helical wire, whereby a large contact surface between the hot filament and the gas mixture to be ignited is available. The relatively long wire can be accommodated in a relatively small space.
Von Vorteil ist es ferner, wenn das Widerstandselement wenigstens ein Metall der Gruppe Cu, Ni, Wo, Cr, Mn, C, Si enthält. Vorteilhaft besteht der das Widerstandselement dabei aus einer Legierung eines oder mehrerer dieser Metalle.It is furthermore advantageous if the resistance element contains at least one metal of the group Cu, Ni, Wo, Cr, Mn, C, Si. Advantageously, the resistance element consists of an alloy of one or more of these metals.
Günstig ist es auch, wenn das Widerstandselement einen elektrischen Widerstand von 0,5 bis 10 Ohm/mm[exp2] aufweist.It is also favorable if the resistance element has an electrical resistance of 0.5 to 10 ohms / mm [exp2].
Vorteilhaft liegt der durch eine Steuereinheit generierte Zündstrom für die Zündeinrichtung zwischen 0,1 und 50 Ampere.Advantageously, the ignition current for the ignition device generated by a control unit is between 0.1 and 50 amperes.
In den Zeichnungen ist die Erfindung in einem Ausführungsbeispiel dargestellt.In the drawings, the invention is shown in one embodiment.
Es zeigen:
-
Fig. 1 ein erfindungsgemässes brennkraftbetriebenes Setzgerät im teilweisen Längsschnitt, -
Fig. 2 ein Detail des brennkraftbetriebenen Setzgeräts gemäss der Markierung II ausFig. 1 .
-
Fig. 1 an inventive combustion-powered setting tool in partial longitudinal section, -
Fig. 2 a detail of the combustion-powered setting tool according to the mark IIFig. 1 ,
Das handgeführte, brennkraftbetriebene Setzgerät 10 gemäss
Zum Antrieb gehören u. a. eine Brennkammer 15 und ein Führungszylinder 13, in dem ein Setzkolben 14 axial versetzbar angeordnet ist. Die Brennkammer 15 wird in dem dargestellten Ausgangszustand umfänglich von einer Brennkammerhülse 28, und axial an einem ersten Ende vom Setzkolben 14 und einer ringförmigen Brennkammerwand 29 sowie an einem zweiten Ende von einer Brennkammerrückwand 30, die als Zylinderkopf ausgebildet ist, begrenzt.The drive includes u. a. a
Ein in der Brennkammer 15 angeordneter und über einen Motor 17 antreibbarer Ventilator 16 dient sowohl der Erzeugung eines turbulenten Strömungsregimes eines in der geschlossenen Brennkammer 15 befindlichen Luft-Brennstoffgemisches als auch dem Ausspülen der geöffneten Brennkammer 15 mit Frischluft nach erfolgtem Setzvorgang. Der Motor 17 ist dabei an der Brennkammerrückwand 30 gelagert, die als Verschluss für die axial verschiebbare Brennkammerhülse 28 fungiert.An arranged in the
An einem Handgriff 18 des Setzgeräts 10 ist ein Triggerschalter 19 angeordnet, über den eine in der Brennkammer 15 angeordnete Zündeinrichtung 26 vermittelt über eine Steuerelektronik 25 auslösbar ist, wenn das Setzgerät 10 an ein Werkstück angepresst und dabei ein Schaltmittel 24 im Mündungsbereich 27 des Setzgerätes 10 aktiviert wird. Die Zündeinrichtung 26 ist dazu über eine Leitung 41 mit der Steuerelektronik 25 elektrisch verbunden. Wie aus
Das Setzgerät 10 kann mit einem Brenngas oder mit einem verdampfbaren Flüssigbrennstoff betrieben werden, das/der in einem Brennstoffreservoir 20, wie z. B. einer Brennstoffdose, bereitgestellt wird. Das Brennstoffreservoir 20 ist dabei über eine Brennstoffleitung 22 mit einem Brennstoffeinlass 23 in der Brennkammer 15 verbunden. In die Brennstoffleitung 22 ist noch eine Dosiereinrichtung 21, wie z. B. ein Dosierventil, zwischengeschaltet, über die eine Steuerung der Brennstoffzufuhr zur Brennkammer 15 erfolgt.The
Zur Versorgung der elektrischen Verbraucher, wie z. B. der Zündeinrichtung und des Motors 17 mit elektrischer Energie, ist weiterhin eine elektrische Energiequelle 40, wie z. B. ein Akkumulator, vorhanden.To supply the electrical consumers, such. B. the ignition device and the
Die Zündeinrichtung 26 und die Dosiereinrichtung 21 sind elektronisch über die insgesamt mit 25 bezeichnete Steuerelektronik gesteuert. Die Steuerelektronik 25 weist z. B. einen oder mehrere Mikroprozessoren zur Datenverarbeitung und Steuerung der verschiedenen elektrischen Gerätefunktionen auf und ist über eine elektrische Versorgungsleitung 44 mit der elektrischen Energiequelle 40 verbunden. Ein von der Steuerelektronik 25 generierter Zündstrom für die Zündeinrichtung 26 liegt vorzugsweise zwischen 0,1 und 50 Ampere.The
Claims (5)
mit einer Brennkammer (15) für einen über eine Dosiereinrichtung (21) dosierbaren Brennstoff,
und mit einer in der Brennkammer (15) angeordneten Zündeinrichtung (26) für den Brennstoff,
dadurch gekennzeichnet,
dass die Zündeinrichtung (26) ein Widerstandselement (36) zum Zünden des Brennstoffs aufweist.Internal combustion setting device (10) for driving in fastening elements,
with a combustion chamber (15) for a fuel which can be metered via a metering device (21),
and with an ignition device (26) arranged in the combustion chamber (15) for the fuel,
characterized,
in that the ignition device (26) has a resistance element (36) for igniting the fuel.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008043228A DE102008043228A1 (en) | 2008-10-28 | 2008-10-28 | Internal combustion setting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2181809A1 true EP2181809A1 (en) | 2010-05-05 |
Family
ID=41692900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09171918A Withdrawn EP2181809A1 (en) | 2008-10-28 | 2009-10-01 | Fuel driven fastening tool |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20100102103A1 (en) |
| EP (1) | EP2181809A1 (en) |
| JP (1) | JP2010105152A (en) |
| CN (1) | CN101722503A (en) |
| DE (1) | DE102008043228A1 (en) |
| TW (1) | TW201031501A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009041828A1 (en) * | 2009-09-18 | 2011-03-24 | Hilti Aktiengesellschaft | Device for transferring energy to e.g. pin, has closing unit for temporarily closing supply channel, and control unit connected with closing unit for opening and closing of closing unit according to predetermined conditions |
| DE102009041824A1 (en) * | 2009-09-18 | 2011-03-24 | Hilti Aktiengesellschaft | Device for transmitting energy to a fastener |
| DE102011077832A1 (en) * | 2011-06-20 | 2012-12-20 | Hilti Aktiengesellschaft | Propellant container for combustion-powered bolt guns |
| EP2826601A1 (en) * | 2013-07-16 | 2015-01-21 | HILTI Aktiengesellschaft | Control method and hand tool machine |
| CN105157060A (en) * | 2014-05-30 | 2015-12-16 | 胡晋青 | Turbine combustion chamber |
| CN111021778A (en) * | 2019-11-30 | 2020-04-17 | 江苏中润信息工程科技开发有限公司 | Broken wall equipment suitable for security protection |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3514025A (en) * | 1967-10-30 | 1970-05-26 | Omark Industries Inc | Powder actuated tool |
| GB2072811A (en) * | 1980-03-31 | 1981-10-07 | Hilti Ag | Trigger electrode for a caseless propellant charged-actuated tool |
| US6123241A (en) | 1995-05-23 | 2000-09-26 | Applied Tool Development Corporation | Internal combustion powered tool |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3861371A (en) * | 1973-12-10 | 1975-01-21 | Joseph Gamell Ind Inc | Ignition system for engine |
| DE3005342A1 (en) * | 1980-02-13 | 1981-08-20 | Hilti AG, 9494 Schaan | POWDER POWERED BOLT SETTING MACHINE |
| JPS56129581U (en) * | 1980-03-03 | 1981-10-01 | ||
| US4477717A (en) * | 1983-04-08 | 1984-10-16 | Wellman Thermal Systems Corporation | Fast start glow plug |
| DE3825012A1 (en) * | 1988-07-22 | 1990-01-25 | Beru Werk Ruprecht Gmbh Co A | MATERIAL FOR AN ELECTRICAL RESISTANCE ELEMENT WITH POSITIVE TEMPERATURE COEFFICIENT |
| DE4010479A1 (en) * | 1990-03-31 | 1991-10-02 | Bosch Gmbh Robert | GLOW PLUG FOR INTERNAL COMBUSTION ENGINES |
| DE4301252A1 (en) * | 1993-01-19 | 1994-07-21 | Beru Werk Ruprecht Gmbh Co A | Pole flame glow plug |
| DE19630402C2 (en) * | 1996-07-26 | 2000-12-28 | Beru Ag | Pole flame glow plug |
| JP2002098333A (en) * | 2000-09-26 | 2002-04-05 | Ngk Spark Plug Co Ltd | Glow plug |
| DE102005015569A1 (en) * | 2005-04-05 | 2006-10-12 | Robert Bosch Gmbh | Ceramic resistance or sensor element |
| US20080307794A1 (en) * | 2007-06-15 | 2008-12-18 | Robert Kurt Graupner | Guanidine based fuel system and method of operating a combustion system |
-
2008
- 2008-10-28 DE DE102008043228A patent/DE102008043228A1/en not_active Ceased
-
2009
- 2009-10-01 EP EP09171918A patent/EP2181809A1/en not_active Withdrawn
- 2009-10-22 JP JP2009243214A patent/JP2010105152A/en active Pending
- 2009-10-23 US US12/589,451 patent/US20100102103A1/en not_active Abandoned
- 2009-10-23 TW TW098136245A patent/TW201031501A/en unknown
- 2009-10-26 CN CN200910207328A patent/CN101722503A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3514025A (en) * | 1967-10-30 | 1970-05-26 | Omark Industries Inc | Powder actuated tool |
| GB2072811A (en) * | 1980-03-31 | 1981-10-07 | Hilti Ag | Trigger electrode for a caseless propellant charged-actuated tool |
| US6123241A (en) | 1995-05-23 | 2000-09-26 | Applied Tool Development Corporation | Internal combustion powered tool |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201031501A (en) | 2010-09-01 |
| US20100102103A1 (en) | 2010-04-29 |
| CN101722503A (en) | 2010-06-09 |
| JP2010105152A (en) | 2010-05-13 |
| DE102008043228A1 (en) | 2010-04-29 |
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