Patents by Inventor Peter Stiefel
Peter Stiefel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20170282831Abstract: The invention relates to a method for producing a separation net and to a separation net (10), in particular for vehicle interiors, which has a net-like, tear-resistant textile web (11) formed of textile threads (12), which is cut to any peripheral contour, wherein the loose ends (13) of the textile threads (12) that were created by a separating cut are securely bound at the edges in a plastic material of a single-layered edge strip (18). The textile web (11) can have any peripheral contour, and the loose ends (13) of the textile threads (12) of the textile web (11) that were created by a cutting to size are embedded at least at the side edges (16, 17).Type: ApplicationFiled: August 10, 2015Publication date: October 5, 2017Applicant: KKV MARKEN-UND PATENTSCHUTZ GBRInventors: Holger Vehring, Peter Stiefel
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Patent number: 6872056Abstract: A radial piston pump used for producing high fuel pressure in fuel systems of internal combustion engines, in particular in a common rail injection system includes a housing with at least one cylinder and a drive shaft is supported in the housing and having at least one cam section. A stroke ring is disposed encompassing the cam section a piston contained in each cylinder is supported against the stroke ring. A possibility for adjusting the delivery quantity of the radial piston pump is achieved in that an adjusting ring is disposed between the cam section and the stroke ring and the internal opening of this adjusting ring is eccentric in relation to the outer contour and can be rotated around the central axis of the internal opening into a desired angular position in relation to the cam section.Type: GrantFiled: August 12, 2002Date of Patent: March 29, 2005Assignee: Robert Bosch GmbHInventor: Hans-Peter Stiefel
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Publication number: 20040201258Abstract: An insert element (8) for sealing cavities (6, 7) in vehicle body carriers (4) has sealing means constituted by a foamable material (11) which is secured in the cavities (6, 7) by securing means (9). The insert element (8) comprises a foamable material (11) and a support structure (10) which comprises a frame (13) and an inner part (14) for carrying the foamable material (11). The frame (13) has at least two lateral and not immediately oppositely arranged support faces (12), and carries securing means (9). With this arrangement, the foamable material can completely engulf the securing means (9) with foam during the foaming process and can flow into apertures of an intermediate metal sheet (5) foreseen for receiving the securing means (9). This ensures that these apertures are impermeably sealed against air and noise during the foaming process.Type: ApplicationFiled: April 2, 2003Publication date: October 14, 2004Inventors: Pierre Daniere, Serge Jambert, Giles Baleydier, Peter Stiefel
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Publication number: 20030031568Abstract: A radial piston pump used for producing high fuel pressure in fuel systems of internal combustion engines, in particular in a common rail injection system includes a housing with at least one cylinder and a drive shaft is supported in the housing and having at least one cam section. A stroke ring is disposed encompassing the cam section a piston contained in each cylinder is supported against the stroke ring. A possibility for adjusting the delivery quantity of the radial piston pump is achieved in that an adjusting ring is disposed between the cam section and the stroke ring and the internal opening of this adjusting ring is eccentric in relation to the outer contour and can be rotated around the central axis of the internal opening into a desired angular position in relation to the cam section.Type: ApplicationFiled: August 12, 2002Publication date: February 13, 2003Inventor: Hans-Peter Stiefel
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Patent number: 6210129Abstract: The present invention relates to a high-pressure pump for a fuel injection device of an internal combustion engine, with a pump housing, with at least one work chamber disposed in the pump housing functionally between an inlet region and a supply region. A working element is movably disposed in the work chamber, and a pump shaft is provided in the pump housing by means of which the working element can be driven. In order to obtain a shortened structural length, and an extended service life of the pump, a provision is made that the pump housing can be fastened to a wall of a motor housing of the internal combustion engine, wherein the pump shaft can be radially supported against a shaft of the internal combustion engine, which shaft is supported in the motor housing.Type: GrantFiled: November 25, 1998Date of Patent: April 3, 2001Assignee: Robert Bosch GmbHInventor: Hans-Peter Stiefel
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Patent number: 5967123Abstract: A piston pump for pumping fuel in which a risk of fuel getting into the area of a shaft seal is limited. The fuel pump includes a separation chamber which is provided between a shaft seal and a fuel chamber that contains fuel. Located in the separation chamber is for instance air as a separator means, and the separation chamber communicates with an air inlet of the engine. This assures that fuel cannot get into the area of the shaft seal or escape to the outside. The fuel pump is suitable in particular for internal combustion engines in which the fuel must be delivered at high pressure.Type: GrantFiled: March 10, 1998Date of Patent: October 19, 1999Assignee: Robert Bosch GmbHInventors: Manfred Ruoff, Helmut Rembold, Hans-Peter Stiefel, Gottlob Haag, Karl Gmelin, Volkmar Goldschmitt, Karlheinz Schmidtpeter, Matthias Einecke, Uwe Mueller
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Patent number: 5937734Abstract: The device relates to a piston pump, in particular a high pressure pump for a fuel injection device of an internal combustion engine, with at least one piston that is supported so that the piston can slide in a piston guide provided in a housing. A drive shaft is supported in the housing (10) on which drive shaft a crank element is provided. A stroke ring is supported in rotary fashion on the crank element and the piston can be acted upon by the drive shaft by way of this stroke ring. In order to prevent high lateral forces on the piston, the piston is supported on the non-rotating stroke ring with a sliding surface disposed on it against an associated slide bearing surface, wherein lubrication grooves are let into the slide bearing surface, crosswise to the relative motion between the piston and the stroke ring.Type: GrantFiled: April 23, 1998Date of Patent: August 17, 1999Assignee: Robert Bosch GmbHInventors: Hans-Peter Stiefel, Karl Gmelin
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Patent number: 5876186Abstract: A high pressure pump for a fuel injection device of an internal combustion engine, having a housing, which has an inflow region and a delivery region, having at least one piston, and having a drive element which act upon the piston. The piston is movably disposed in a piston guide of a pump cylinder element and establishes a work chamber in the piston guide which is operatively provided between the inflow region and the delivery region, which chamber, depending upon the movement direction of the piston, can alternatingly communicate with the inflow region and the delivery region. In order to reduce the assembly and handling expenditure for the assembly and to thus cut corresponding assembly costs, it is provided that the pump cylinder element together with a valve which is provided between the work chamber and the delivery region, is fixed in a retaining element which is fastened to the housing.Type: GrantFiled: June 26, 1996Date of Patent: March 2, 1999Assignee: Robert Bosch GmbHInventor: Hans-Peter Stiefel
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Patent number: 5850775Abstract: The invention relates to an axial piston pump with at least one pump element, which includes a piston disposed in a housing, with a drive shaft upon which a swash plate for driving the piston is disposed. The swash plate is non-rotatably fixed, but can pivot around a swash plate pivot axis which extends perpendicular to the longitudinal drive shaft axis (A), and with a device for adjusting a pivot angle between the drive shaft and the swash plate. In order to be able to adjust the oblique position of the swash plate in a simple manner, even during pump operation, it is provided that the device for adjusting the pivot angle of the swash plate has a displacing device disposed in a stationary manner on the housing.Type: GrantFiled: June 26, 1996Date of Patent: December 22, 1998Assignee: Robert Bosch GmbHInventor: Hans-Peter Stiefel
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Patent number: 5355723Abstract: The temperature of a measuring resistor is controlled for measuring the mass flow rate of intake air entering an internal combustion engine. The operating temperature of the measuring resistor is regulated by controlling the level of electric current flowing therethrough. A voltage signal based on the level of electric current flowing through the measuring resistor is generated which is indicative of the mass flow rate of air entering the engine. The operating temperature target value of the measuring resistor is adjusted based on the value of the voltage signal, to optimize the measurement sensitivity thereof based on the level of the intake air mass flow rate.Type: GrantFiled: December 31, 1992Date of Patent: October 18, 1994Assignee: Robert Bosch GmbHInventors: Karl Gmelin, Hans-Peter Stiefel, Wolfgang Ketterer
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Patent number: 5315870Abstract: A housing for an air flow rate meter is embodied by two housing parts joined together by a detent connection, so that the assembly is reduced to a single operation, and screws and nuts are omitted. The housing for air flow rate meters is especially suitable for fuel injection systems of mixture-compressing internal combustion engines with externally supplied ignition, or air-compressing, self-igniting internal combustion engines.Type: GrantFiled: August 28, 1992Date of Patent: May 31, 1994Assignee: Robert Bosch GmbHInventors: Thomas Schwegel, Hans-Peter Stiefel
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Patent number: 5301547Abstract: A flow rate meter for determining the mass or flow rate of flowing air, having a temperature-dependent measuring resistor disposed in an air bypass conduit. The air bypass conduit has a convergent portion in the region of the measuring resistor in which the air flow is accelerated. As a result of the air flow the effects of any air disturbances upon the measuring element are reduced. The following geometric relationships are advantageous: l.sub.1 /l.sub.s >3.8, l.sub.1/2 >1.5, l.sub.1 /1.sub.3 >2.0, l.sub.1/4 >9.0, l.sub.5 /l.sub.s >1.5, l.sub.5 /l.sub.6 =1.7 to 1.9, b.sub.1 /b.sub.s >40.0, b.sub.1 /b.sub.2 >2.0, l.sub.1 /b.sub.1 >3.5, and l.sub.5 /b.sub.3 =5.5 to 6. The air flow rate meter is especially suitable for determining the mass or flow rate of aspirated air in mixture-compressing engines with externally supplied ignition as well as air-compressing, self-igniting engines.Type: GrantFiled: September 23, 1992Date of Patent: April 12, 1994Assignee: Robert Bosch GmbHInventors: Bernd Osswald, Thomas Schwegel, Hans-Peter Stiefel
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Patent number: 5207094Abstract: The temperature of a measuring resistor is controlled for measuring the mass flow rate of intake air entering an internal combustion engine. The operating temperature of the measuring resistor is regulated by controlling the level of electric current flowing therethrough. A voltage signal based on the level of electric current flowing through the measuring resistor is generated which is indicative of the mass flow rate of air entering the engine. The operating temperature of the measuring resistor is adjusted based on the value of the voltage signal, to optimize the measurement sensitivity thereof based on the level of the intake air mass flow rate.Type: GrantFiled: October 7, 1991Date of Patent: May 4, 1993Assignee: Robert Bosch GmbHInventors: Karl Gmelin, Hans-Peter Stiefel, Wolfgang Ketterer
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Patent number: 5167147Abstract: An air-measuring device for measuring the air mass taken in by an internal combustion engine which has a main flow channel, having a venturi section, and a temperature-dependent measuring resistor arranged in a bypass channel, the bypass channel opening upstream and downstream of the smallest flow cross-section of the venturi section in the direction of flow, in order to reduce the noise component in the measurement signal of the measuring resistor a channel region with an inlet and outlet opening is formed in the bypass channel, which channel region accommodates the measuring resistor in a central portion. The channel region is designed in such a way that the ratio of the flow cross-section of the central portion to the smallest cross-section of the venturi section is from 1:8 to 1:25 and the ratio of the cross-section to the cross-section of the inlet and outlet opening is in each case from 1:1 to 1:2.Type: GrantFiled: March 1, 1991Date of Patent: December 1, 1992Assignee: Robert Bosch GmbHInventors: Klaus-Juergen Peters, Walter Bosch, Hans-Peter Stiefel, Karl Gmelin, Kurt Frank, Thomas Schwegel
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Patent number: 4982602Abstract: An air flow meter that includes a filter or flow rectifier disposed in a retaining aperture of a collar in a bypass channel such that a second end face of the filter rests against one end of a slide-in member in which a resistance element is held in position without any edges that disturb the air flow in the remainder of the bypass channel. The air metering device is designed to be used to measure the air sucked into an air intake tube of an internal combustion engine.Type: GrantFiled: November 27, 1989Date of Patent: January 8, 1991Assignee: Robert Bosch GmbHInventors: Hans-Peter Stiefel, Kurt Frank
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Patent number: 4451011Abstract: A film winding spool for a photographic camera has an inner cylindrical member driven in rotation and provided with engaging formations for engaging an initial portion of the film, and an outer cylindrical member surrounding the inner member so as to form a space therebetween and having a slot for introducing the initial portion of a film into this space and an outer surface for winding successive coils of the film, wherein the outer member has at least one opening arranged so that a piece of the film separated from a remaining part of the film can be withdrawn from the space between the inner and outer members through the opening.Type: GrantFiled: May 10, 1982Date of Patent: May 29, 1984Assignee: Agfa-Gevaert AktiengesellschaftInventors: Dieter Engelsmann, Leo Lippl, Reinhard Nicko, Peter Stiefel, Peter Lermann
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Patent number: 4381997Abstract: A differential pressure valve is proposed for a fuel injection system of an internal combustion engine. The differential pressure valve includes a diaphragm embodied as the movable valve element, which separates two chambers from one another. A fuel supply line discharges into one chamber and a valve seat carrier provided with a valve opening protrudes into this chamber. This chamber also houses a filter element and a valve spring is disposed coaxially with the valve seat carrier between upper and lower spring plates. The filter element is disposed such that a subsequent change in the tension of the valve spring is also possible. To this end, the filter element can engage the upper spring plate on one side in a sealing manner and on the other side can be supported in a sealing manner in a groove of the wall of the chamber (FIG. 1). In order to assure the free mobility of the filter element, it is provided with an elastically deformable area. As shown in FIG.Type: GrantFiled: November 12, 1981Date of Patent: May 3, 1983Assignee: Robert Bosch GmbHInventors: Klaus-Jurgen Peters, Peter Stiefel, Heinz Ehrentraut
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Patent number: 4381751Abstract: A fuel injection system is proposed which serves to provide the most precise possible adaptation of the fuel-air mixture to operating conditions of the internal combustion engine. The fuel injection system includes metering valves, each of which is assigned one regulating valve, whose movable valve element can be exposed on the one hand to the fuel pressure downstream of the respective metering valve and on the other hand to the pressure in a control pressure line, which is limited on the one hand by an electro-fluid converter of the nozzle/bounce plate type and on the other hand by a control throttle. The electro-fluid converter is triggerable in accordance with operating characteristics of the engine.Type: GrantFiled: February 20, 1981Date of Patent: May 3, 1983Assignee: Robert Bosch GmbHInventors: Wolfgang Maisch, Jurgen Peters, Michael Wissmann, Karl Gmelin, Peter Stiefel
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Patent number: 4370967Abstract: A fuel injection system is proposed which serves to supply fuel to a mixture-compressing, externally ignited internal combustion engine. The fuel injection system includes an air flow rate member, which actuates a metering and distribution valve. A reservoir is disposed in a pressure control line which branches off from a fuel supply line, by means of which reservoir a flushing valve can be affected in such a manner that below a certain fuel pressure in the pressure control line the flushing valve is opened, as a result of which the fuel supplied to the individual injection valves can flow back through outflow lines to the fuel tank and thus closes the flushing valve above the certain fuel pressure. Above the certain fuel pressure, the electrical circuit of the starter motor is simultaneously closed. Thus, upon starting the engine, all the lines and units of the fuel injection system are filled with fuel, so that a secure start is assured.Type: GrantFiled: July 20, 1979Date of Patent: February 1, 1983Assignee: Robert Bosch GmbHInventors: Karl Gmelin, Peter Stiefel, Klaus-Jurgen Peters
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Patent number: 4364362Abstract: A metering and distribution valve assembly is proposed for a fuel injection system of an internal combustion engine. The metering and distribution valve assembly includes a control slide having a head 68 and a control edge and a slotted sleeve with at least two control slits. The control edge opens the control slits to a greater or lesser degree in accordance with the relative motion between the control slide and the control slits in the slotted sleeve. An end face of the control slide adjacent to the control edge is exposed to a control pressure which is lower than the system pressure engaging the control edge. The pressure drop at the circumference of the control slide head formed between the control edge and the end face is capable of being influenced in such a manner that the control slide head rests unilaterally on the slotted sleeve at least during a portion of the displacement movement. As a result, better metering precision is obtained.Type: GrantFiled: January 23, 1981Date of Patent: December 21, 1982Assignee: Robert Bosch GmbHInventors: Michael Wissmann, Peter Stiefel