Patents Represented by Attorney, Agent or Law Firm David and Bujold
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Patent number: 8348663Abstract: A dental device (10) for temporarily filling a toothless gap (50) following extraction of a tooth. The dental device is arranged so as to be located in a space between two adjacent teeth (30, 40) bordering, on each opposed side, the toothless gap. The dental device comprises a central block (11) and two arms (12, 13) located on opposite sides of the central block (11). The two arms (12, 13) are extendible between a retracted position and an extended position. Each arm carries, at a free end thereof, at least one support (14, 15) adapted for resting respectively on a surface of the adjacent teeth when the arms are in the extended position. The central block includes an adjusting mechanism (19) for moving the two arms into the extended position, and a lock (20, 21, 22) locks the adjusting mechanism when the arms are in the extended position.Type: GrantFiled: October 30, 2009Date of Patent: January 8, 2013Assignee: Dynadent SarlInventors: Mahfoud Maadi, Abd-Al-Qadir Maadi, Karim Maadi
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Patent number: 8333679Abstract: An arrangement for mounting and fixing a planetary gear system (3) onto a camshaft (2). The planetary gear system comprises a planetary carrier (5) that forms the drive input of the camshaft (2), with planetary gears (7) mounted on planetary bolts (6). A ring gear (10) is rotationally fixedly connected to the camshaft (2), and a sun gear (8) is connected with a sun shaft (9). The ring gear (10) is arranged at the end of and coaxially with the camshaft (2) and is rotationally fixedly connected to the camshaft (2) by eccentrically arranged fixing elements (4).Type: GrantFiled: September 30, 2009Date of Patent: December 18, 2012Assignee: ZF Friedrichshafen AGInventors: Frank Richter, Ewald Schmitz, Jochen Walliser
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Patent number: 8109856Abstract: A method for operating a vehicle drive train during a coasting operation. The drive train has an internal combustion engine, an electric machine, a transmission, and a shift element, with a variable transmission capacity, located between the electric machine and a drive wheels. The electric machine is located in the flow of power between the combustion engine and the transmission. The output torque to be delivered to the wheel is a function of the delivery capacity of the shift element which is adjusted in a controlled manner. During the process of shutting down the combustion engine, the speed of the electric machine is adjusted while maintaining at least a partial engagement of the shift element and the speed of the combustion engine is reduced to zero with the electric machine.Type: GrantFiled: January 8, 2008Date of Patent: February 7, 2012Assignee: ZF Friedrichshafen AGInventor: Johannes Kaltenbach
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Patent number: 8062177Abstract: A method of selecting a neutral position of an automatic or automated transmission and a parking gear to immobilize a motor vehicle. The neutral position and parking device can be set or activated, depending on a gear selected by the driver with a selector device and depending on other vehicle operating parameters. Only when the motor vehicle is at least substantially stationary, an ignition circuit acting on the drive motor vehicle is electrically interrupted and a “Neutral” (N) gear is selected by a selector device occur simultaneously, can an N-holding phase, in which the transmission is in a friction-free neutral position, be activated by a separate control device provided in addition to the selector device, as long as an energy management system of the motor vehicle allows activation of the N-holding phase.Type: GrantFiled: October 24, 2008Date of Patent: November 22, 2011Assignee: ZF Friedrichshafen AGInventors: Walter Hecht, Armin Gierling, Klaus Steinhauser, Frank Worms, Bernd Zänglein, Stéphane Klein
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Patent number: 8020654Abstract: A drivetrain is proposed for a hybrid motor vehicle, which comprises an electric machine arranged between the vehicle's transmission (2) and a differential (8) of a driven axle in order to drive the axle via a Cardan shaft (7) or another shaft capable of torque transfer in which a transmission (10) made as a reducing gear system is arranged in the force flow direction behind the electric machine in order to produce the necessary speeds and torques and transfer them to the Cardan shaft or to the other shaft.Type: GrantFiled: July 1, 2008Date of Patent: September 20, 2011Assignee: ZF Friedrichshafen AGInventors: Thorsten Muller, Markus Hoher, Linus Eschenbeck
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Patent number: 8002100Abstract: The invention concerns a device for actuating a diaphragm spring clutch (20) for vehicles by means of a pneumatic, hydraulic or electric actuator (24), comprising a controller connected upstream of the actuator (24), whose output control variable actuates the actuator (24). To compensate for the strong nonlinearity of the releasing force over the releasing stroke that is typical of diaphragm springs, a controller is used, whose characteristic curve is plotted in such a way that this nonlinear curve of the releasing force is at least approximately compensated via a correspondingly coordinated actuation of the actuator (24), so that it remains essentially identical over the releasing stroke.Type: GrantFiled: August 11, 2006Date of Patent: August 23, 2011Assignee: ZF Friedrichshafen AGInventors: Peter Herter, Franz Bitzer
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Patent number: 7892137Abstract: The transmission includes input and output shafts, gearsets (RS1, RS2, RS3, RS4), shafts (1, 2, 3, 4, 5, 6, 7, 8), and elements (A, B, C, D, E). A carrier of gearset (RS4) couples the input shaft forming shaft (1). A carrier of gearset (RS3) couples the output shaft forming shaft (2). Sun gears of gearsets (RS1, RS4) couple forming shaft (3). Ring gears of gearsets (RS1, RS2) respectively form shafts (4, 8). A carrier and sun gear respectively of gearsets (RS2, RS3) couple forming shaft (5). A carrier and ring gear respectively of gearsets (RS1, RS3) couple forming shaft (6). Sun and ring gears respectively of gearsets (RS2, RS4) couple forming shaft (7). In the power flow, elements (A, B) are respectively between (3, 4) and a housing, element (C) between (1, 5), element (D) between either (2, 8) or (6, 8), shifting element (E) between two of (5, 7, 8).Type: GrantFiled: July 5, 2007Date of Patent: February 22, 2011Assignee: ZF Friedrichshafen AGInventors: Michael Kamm, Gabor Diosi, Josef Haupt, Gerhard Gumpoltsberger, Peter Ziemer, Martin Brehmer
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Patent number: 7559966Abstract: An exhaust gas filter comprises an outer tube, a plurality of center-closing filter units each having an isolation plate; and a plurality of center-opening filter units having an annular isolation plate, two kinds of filter units being arranged alternately in the outer tube. The isolation plate and annular isolation plate are enclosed by flammable fibers. When a contaminated gas goes through the flammable fibers, it can be filtrated.Type: GrantFiled: February 22, 2007Date of Patent: July 14, 2009Assignee: Anest Iwata CorporationInventors: Youhei Midorikawa, Satoshi Miki, Tetsuya Abe, Takashi Arai, Masahiro Nemoto, Seiji Hiroki
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Patent number: 7526975Abstract: A gearshifting unit for a vehicle transmission (6) comprising a main transmission part (10) manually shifted by the vehicle driver using a gearshift lever (16) and one range change group transmission (14) shifted by valves (44, 46). The gearshifts are manually preselectable by the vehicle driver using a gearshift lever (16), the same as a power assistance device (74) for shifting the gear steps in the main transmission part (10) and one electronic control device (20) which actuates the valves (44, 46). In a method for reducing the power assistance, a neutral position is detected in the manually shifting main transmission part (10) and once the neutral position is determined, the gearshift begins in the range change group transmission part (14) and the power assistance is engaged with a delay.Type: GrantFiled: November 22, 2003Date of Patent: May 5, 2009Assignee: ZF Friedrichshafen AGInventors: Dieter Fischer, Klaus Späth
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Patent number: 7494142Abstract: A swing arm with impact dampener, includes a swing arm having a pivoting coupling end and a non-pivoting coupling end. An impact dampening assembly is positioned at the non-pivoting coupling end.Type: GrantFiled: July 1, 2005Date of Patent: February 24, 2009Assignee: Lehman Trikes U.S.A., Inc.Inventor: Karl Wolter
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Patent number: 7377160Abstract: A sensor arrangement (1) for a tachometric sensor of an automatic transmission (4) of a motor vehicle, which encompasses a module carrier (2) in which a part of a sensor housing (3) is integrated. The sensor housing (3) is secured in the module carrier (2) or in the transmission housing (4) by way of a guide in the plane and is so affixed as to prevent turning and an apparatus (5) for the generation of a prestress force by way of which the sensor housing (3) is pressed in the direction of the signal disk by way of a projection (8, 8?) acting against the sensor housing (3).Type: GrantFiled: May 9, 2006Date of Patent: May 27, 2008Assignee: ZF Friedrichshafen AGInventors: Ralph Böhm, Gerhard Birkenmaier, Jörg Kurth
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Patent number: 7360616Abstract: A method for controlling and regulating a power train of a hybrid vehicle and a power train of a hybrid vehicle having one internal combustion engine, one electric machine, one shifting element and one output in a power flow of the power train and designed with continuously variable transmitting capacity and one clutch device and the internal combustion engine. The electric machine can be operatively interconnected via the clutch device, the hybrid vehicle being optionally driveable via the electric machine and/or via the internal combustion engine and the internal combustion engine can be started via the electric machine. In the operation of the power train, the transmitting capacity of the shifting element during the starting operation of the internal combustion engine is adjusted so that on the output of the power train, a torque abuts which is independent of the starting operation of the internal combustion engine.Type: GrantFiled: December 13, 2004Date of Patent: April 22, 2008Assignee: ZF Friedrichshafen AGInventor: Peter Schiele
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Patent number: 7144254Abstract: An underwater writing tablet/instrument apparatus comprising a writing tablet having a perimeter edge. A resilient protective border is secured to the perimeter edge of the writing tablet for protecting perimeter edge. A resilient elongate member has opposed first and second ends with the first end attached to the protective border while the second end has a writing instrument receiving component for retaining a desired writing instrument. The elongate member has an normal, unexpanded state and an expanded state in which the coil member is resiliently expanded to facilitate a diver writing on the writing tablet with the writing instrument.Type: GrantFiled: March 27, 2003Date of Patent: December 5, 2006Inventor: Kurt E. Meyerrose
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Patent number: 7137869Abstract: A manufacturing cell for the treatment of grinding of gear wheel flanks, in particular by bevel pinions, and suggested for the wheel set testing, which includes a grinding machine (1), an unreeling test equipment (2), a laser inscription unit (3) with a time band (5) and a robot-supported load system (4), which are concatenated with one another and controllable that the process of pinion loops/wheel set examining/marking and the correction of the grinding machine attitude as a function of the results of the unreeling examination is feasible.Type: GrantFiled: March 27, 2006Date of Patent: November 21, 2006Assignee: ZF Friedrichshafen AGInventors: Klaus Sattelberger, Klaus Stuchlik
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Patent number: 7101303Abstract: A multiple stage transmission in planetary design comprises three planetary gear sets (P1, P2, P3), at least six rotatable shafts (1, 2, 3, 4, 5, 6), at least six shifting elements (03, 04, 13, 16, 45, 56), the drive shaft (1) is permanently connected with the spider of the first planetary gear set (P1) and, via one clutch (16), with the shaft (6) which is connected with the sun gears of the second planetary gear sets (P2) and connectable, via the clutch (56), with the, the driven shaft (2) being connected with the spider of the third planetary gear set (P3), the shaft (3) is permanently connected with the sun gear of the third planetary gear set (P3) and the ring gear of the second planetary gear set (P), via one clutch (13) connectable with the drive shaft (1) and, via one brake (03), attachable to the housing (G) and the sun gear of the first planetary gear set (P1) being non-rotatably connected via one shaft (0) with the housing (G).Type: GrantFiled: September 3, 2004Date of Patent: September 5, 2006Assignee: ZF Friedrichshafen AGInventors: Peter Tiesler, Gerhard Gumpoltsberger
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Patent number: 7056664Abstract: The invention relates to a method for the electrochemical detection of sequence-specific nucleic acid oligomer hybridization events. To this end single DNA/RNA/PNA oligomer strands which at one end are covalently joined to a support surface and at the other, free end, covalently linked to a redox pair, are used as hybridization matrix (probe). As a result of treatment with the oligonucleotide solution (target) to be examined, the electric communication between the conductive support surface and the redox pair bridged by the single-strand oligonucleotide, which communication initially is either absent or very weak, is modified. In case of hybridization, the electric communication between the support surface and the redox pair, which is now bridged by a hybridized double-strand oligonucleotide, is increased. This permits the detection of a hybridization event by electrochemical methods such as cyclic voltametry, amperometry or conductivity measurement.Type: GrantFiled: November 19, 1999Date of Patent: June 6, 2006Assignee: Fritz Biochem Gesellschaft für Bioanalytik mbHInventors: Gerhard Hartwich, Adam Heller
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Patent number: 7052362Abstract: An apparatus and method for applying a blasting media, comprised of at least first and second separate types of particles, to a surface to be treated. Each type of particle may comprise a core coated with a desired component, e.g. abrasive, absorptive, polishing, etc., and the components are selected so as to minimize the density variation of different types of media being combined with one another for the surface treatment. The different types of particles are mixed with one another prior to application to a surface to be treated. The mixing may occur in a mixing tank prior to use, in the media supply conduit prior to the nozzle, at the discharge outlet of the nozzle, or just prior to contacting the surface to be treated. By employing different types of particles, cleaning and reuse of the media is facilitated while also minimizing the amount of media consumed per unit area of wall to be treated.Type: GrantFiled: October 29, 2004Date of Patent: May 30, 2006Inventor: William R. Lynn
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Patent number: 7040670Abstract: The present invention relates to an alternative pipe coupling apparatus, to conventional tapered screw threads usually used to join ends of pipe sections to fixtures. The invention utilizes a bayonet style interlocking arrangement having a male element and a female element which join together and are opposingly biased against one another by a spring-like retaining ring to ensure an appropriate rigid and leak-proof connection between two elements.Type: GrantFiled: December 11, 2003Date of Patent: May 9, 2006Assignee: Parker & Harper Companies, Inc.Inventor: Kenneth Madden
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Patent number: 6668670Abstract: Multi-speed step-change transmission for commercial vehicles having an one input shaft, a main shaft placed in an axial extension, one countershaft parallel thereto and one intermediate shaft parallel to the two shafts for the reverse gear and the shafts have gear wheels forming the ratio steps of the transmission. The sum of the tip radii of the intermediate gear (3) for the reverse gear and of the main shaft gear (1) for the first gear is smaller than the axial separation (a) between the main shaft (5) and the intermediate shaft (6).Type: GrantFiled: April 24, 2002Date of Patent: December 30, 2003Assignee: ZF Friedrichshafen AGInventors: Gerhard Führer, Hermann Lanz, Roland Stauber
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Patent number: D570196Type: GrantFiled: July 30, 2007Date of Patent: June 3, 2008Assignee: The ID Key Company Inc.Inventors: H. Douglas McKinnon, Edward C. Henshall, Gordon G. McKinnon