Patents by Inventor Joachim Martin

Joachim Martin 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).

  • Publication number: 20100213401
    Abstract: A bypass valve for a cooler connected downstream from a hydraulic aggregate. The bypass valve includes a housing with ports for connection to the hydraulic aggregate and the cooler. A closure element is located in the housing for closing and opening a bypass. A spring pushes the closure element into a closing position, and thermo-sensitive means causes the closure element to open if the temperature of the hydraulic fluid is below a threshold temperature. The thermo-sensitive means are formed by the valve spring, which is made of a memory-metal alloy with a transition point close to the threshold temperature such that below the threshold temperature it no longer exerts a force and allows the closure element to open.
    Type: Application
    Filed: July 30, 2007
    Publication date: August 26, 2010
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Hans-Joachim Martin, Anton Fritzer
  • Publication number: 20080296112
    Abstract: A shifting device (1) for shifting a motor vehicle transmission with a shift selector shaft on which a plurality of shift elements (2) such as shift forks or shift rockers (3) are arranged and can be displaced to carry out a shifting operation. The shifting device (1) includes one hydraulic shift cylinder (5, 11, 18, 25), that can be actuated from both sides, with a piston (9, 15, 16, 19, 26) that can be displaced within a cylinder housing (6) and which is actively connected with a shift element (2) to be actuated. To simplify a shifting device (1) of this type, the piston (9, 15, 16, 19, 26) has a piston rod (10, 17, 23, 29) that follows the movement of the piston (9, 15, 16, 19, 26) and can be connected directly to the shift element (2) in a detachable manner.
    Type: Application
    Filed: February 2, 2007
    Publication date: December 4, 2008
    Applicant: ZF Friedrichshafen AG
    Inventors: Rudolf Kauffeldt, Hans-Joachim Martin, Gerhard Gumpoltsberger, Michael Ebenhoch, Wolfgang Rieger, Michael Drabek, Stefan Csajagi
  • Publication number: 20080202450
    Abstract: A bypass valve for blocking oil flow through a radiator from a transmission with low oil temperatures includes an oil supply from the radiator, an oil supply, via a bypass line, an oil outlet and a valve unit arranged inside the valve housing. The valve unit includes a compression spring and a heat sensitive element, which move depending on the oil temperature such that when the temperature falls below a threshold value, the oil supply from the radiator is closed and the supply, via a bypass line, is opened. When the oil temperature rises above the threshold value, the oil supply from the radiator is opened and the supply, via the bypass line, is closed. The valve unit can be axially moved against the force of the compression spring, when a predefined oil pressure is reached, thus opening the supply, via the bypass line.
    Type: Application
    Filed: September 27, 2006
    Publication date: August 28, 2008
    Applicant: ZF Friedrichshafen AG
    Inventors: Hans-Joachim Martin, Anton Fritzer
  • Patent number: 6609930
    Abstract: A plug-and-socket connection part for being fastened to a wall includes a contact housing, a guide sleeve extendable through a wall opening, a carrier, and a locking member. The locking member locks the guide sleeve, the contact housing, and the carrier together such that the guide sleeve and the carrier are connected to the contact housing in an axial direction free of play. The guide sleeve and the carrier each include a respective locking stop and the contact housing includes a flange. The locking member includes inner locking sections which are operable with the locking stop of the guide sleeve and the flange to prestress a support arrangement between the guide sleeve and the contact housing. The locking member includes outer locking sections which are operable with the locking stop of the carrier and the flange to prestress a support arrangement between the carrier and the contact housing.
    Type: Grant
    Filed: September 4, 2002
    Date of Patent: August 26, 2003
    Assignees: Leopold Kostal GmbH & Co. KG, ZF Friedrichshafen AG
    Inventors: Peter Epe, Gerhard Birkenmaier, Wolfgang Schmid, Hans-Joachim Martin
  • Publication number: 20030049960
    Abstract: A plug-and-socket connection part for being fastened to a wall includes a contact housing, a guide sleeve extendable through a wall opening, a carrier, and a locking member. The locking member locks the guide sleeve, the contact housing, and the carrier together such that the guide sleeve and the carrier are connected to the contact housing in an axial direction free of play. The guide sleeve and the carrier each include a respective locking stop and the contact housing includes a flange. The locking member includes inner locking sections which are operable with the locking stop of the guide sleeve and the flange to prestress a support arrangement between the guide sleeve and the contact housing. The locking member includes outer locking sections which are operable with the locking stop of the carrier and the flange to prestress a support arrangement between the carrier and the contact housing.
    Type: Application
    Filed: September 4, 2002
    Publication date: March 13, 2003
    Inventors: Pete Epe, Gerhard Birkenmaier, Wolfgang Schmid, Hans-Joachim Martin
  • Patent number: 6522133
    Abstract: The device for the contactless measurement of the rotational speed of a first part which rotates during operation and which is arranged inside a second part that either does not rotate or rotates at a rotational speed that is independent of the rotational speed of the first part, has an arrangement which generates a magnetic field and a magnetic field detector, wherein the arrangement which generates the magnetic field has a magnet ring (4) integrated in the inner part (1) and wherein the magnetic field detector is a Hall-effect sensor (3) situated in a housing (6) that surrounds both parts: the second part (2) consists of a non-magnetizable material.
    Type: Grant
    Filed: May 3, 2001
    Date of Patent: February 18, 2003
    Assignee: ZF Batavia L.L.C.
    Inventors: Josef Haupt, Hans-Joachim Martin, J├╝rgen Mittelberger
  • Patent number: 6394814
    Abstract: An electrical plug-in connector for electrically connecting two regions separated by a wall. The wall has an assembly hole with a reinforcement bead on a first wall side around the hole. The connector includes a connector part positioned on a second wall side. A guide bushing is positioned on the first wall side. An extended portion of the bushing penetrates the hole in the wall. The extended portion has a support flange and a lock stop. The support flange is supported on the bead on the first wall side. The lock stop extends through the hole to the second wall side and is connected to the connector part. A locking element is connected to the connector part and is operable to engage the lock stop and exert a fastening pressure directed away from the wall towards the connector part such that the extended portion braces the bushing against the hole.
    Type: Grant
    Filed: May 3, 2001
    Date of Patent: May 28, 2002
    Assignees: ZF Friedrichshafen AG, Bayerische Motoren Werke AG, Leopold Kostal GmbH & Co. KG
    Inventors: Wolfgang Schmid, Gerhard Birkenmaier, Rudolf Fekonja, Peter Epe, Klaus Buhle, Hans-Joachim Martin
  • Publication number: 20010021607
    Abstract: An electrical plug-in connector for electrically connecting two regions separated by a wall. The wall has an assembly hole with a reinforcement bead on a first wall side around the hole. The connector includes a connector part positioned on a second wall side. A guide bushing is positioned on the first wall side. An extended portion of the bushing penetrates the hole in the wall. The extended portion has a support flange and a lock stop. The support flange is supported on the bead on the first wall side. The lock stop extends through the hole to the second wall side and is connected to the connector part. A locking element is connected to the connector part and is operable to engage the lock stop and exert a fastening pressure directed away from the wall towards the connector part such that the extended portion braces the bushing against the hole.
    Type: Application
    Filed: May 3, 2001
    Publication date: September 13, 2001
    Applicant: ZF Friedrichshafen AG
    Inventors: Wolfgang Schmid, Gerhard Birkenmaier, Rudolf Fekonja, Peter Epe, Klaus Buhle, Hans-Joachim Martin
  • Patent number: 5955036
    Abstract: In the process for the agglomeration of slightly soluble and hydrolytically sensitive substances, a powder of the slightly soluble substance is conducted, together with at least one water-soluble binder, in free fall through a steam atmosphere at temperatures between 85.degree. C. and 105.degree. C. essentially without the action of compacting forces. In this process, the residence time in the steam atmosphere is approximately 0.5 to 10 seconds. The agglomerates formed are then dried in free fall, so that small solid bridges form from the binder liquid bridges formed at the points of contact between the primary particles. In a following integrated fluidized-bed dryer, the final drying then takes place to a water content of less than 0.5% by weight. The process is carried out in a steam jet agglomerator in which a freely falling product curtain of the pulverulent mixture to be agglomerated is impinged by steam using steam jet nozzles (5, 6).
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: September 21, 1999
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ina Seyffert, Hans Uhlemann, Reinhardt Walter, Joachim Martin Maasz
  • Patent number: 5917081
    Abstract: In the process for the agglomeration of slightly soluble and hydrolytically sensitive substances, a powder of the slightly soluble substance is conducted, together with at least one water-soluble binder, in free fall through a steam atmosphere at temperatures between 85.degree. C. and 105.degree. C. essentially without the action of compacting forces. In this process, the residence time in the steam atmosphere is approximately 0.5 to 10 seconds. The agglomerates formed are then dried in free fall, so that small solid bridges form from the binder liquid bridges formed at the points of contact between the primary particles. In a following integrated fluidized-bed dryer, the final drying then takes place to a water content of less than 0.5% by weight. The process is carried out in a steam jet agglomerator in which a freely falling product curtain of the pulverulent mixture to be agglomerated is impinged by steam using steam jet nozzles (5, 6).
    Type: Grant
    Filed: April 3, 1997
    Date of Patent: June 29, 1999
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ina Seyffert, Hans Uhlemann, Reinhard Walter, Joachim Martin Maasz
  • Patent number: 4728371
    Abstract: A method for manufacturing regions having adjustable uniform doping in silicon crystal wafers by neutron irradiation according to the reaction Si.sup.30 (n,.gamma.) Si.sup.31 .beta..sup.- P.sup.31 includes the steps of covering the silicon crystal wafer with neutron-absorbing materials of different thicknesses during the irradiation, and selecting materials having isotopes having a high absorption cross-section which yield stable isotopes in the nuclear reaction having small or short-lived activity. Suitable isotopes are B.sup.10, Cd.sup.113, Sm.sup.149, Gd.sup.155 and Gd.sup.157. The regions are generated photolithographically. By such specific material selection, very small layer thicknesses can be used and microfine surface zones or areas can be doped with high geometrical precision and large penetration depth. The method is particularly suited for manufacturing power thyristors.
    Type: Grant
    Filed: March 11, 1986
    Date of Patent: March 1, 1988
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ernst W. Haas, Joachim Martin, Heinz Mitlehner, Reinhold Kuhnert
  • Patent number: 4048508
    Abstract: An apparatus for doping a semiconductor crystalline rod by nuclear or radiogenic reactions comprised of a hollow irradiation housing having axially and rotatably movable rod support means within the chamber thereof and a neutron conductive sleeve connected with the housing and providing communication between a neutron source and the housing chamber. Accurate and controlled doping of a semiconductor crystalline rod mounted on the rod support means within the housing chamber occurs via controlled rod movement in relation to the neutron source.
    Type: Grant
    Filed: August 11, 1975
    Date of Patent: September 13, 1977
    Assignee: Siemens Aktiengesellschaft
    Inventors: Joachim Martin, Ernst Haas, Manfred Schnoeller
  • Patent number: 4042454
    Abstract: Si monocrystals of the n-type are produced by zone melting polycrystalline Si rods under conditions sufficient to produce monocrystal rods, measuring the specific conductivity of such monocrystal rods and subjecting such monocrystal rods to a controlled radiation by thermal neutrons based on the measured conductivity to produce a desired degree of n-conductivity in the ultimately attained rods.
    Type: Grant
    Filed: November 6, 1974
    Date of Patent: August 16, 1977
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ernst Haas, Joachim Martin, Konrad Reuschel, Manfred Schnoeller
  • Patent number: 4025365
    Abstract: A homogeneously doped p-conductive semiconductor material is produced by irradiating a desired semiconductor material with .gamma.-photons which trigger nuclear reactions within such irradiated material to form dopant atoms therein.
    Type: Grant
    Filed: August 11, 1975
    Date of Patent: May 24, 1977
    Assignee: Siemens Aktiengesellschaft
    Inventors: Joachim Martin, Ernst Haas, Konrad Reuschel, Manfred Schnoller
  • Patent number: 3967982
    Abstract: A semiconductor layer, such as an epitaxial layer on a suitable substrate is subjected to controlled bombardment by neutrons whereby the atoms of the semiconductor layer are converted via nuclear reaction into doping material atoms.
    Type: Grant
    Filed: July 11, 1975
    Date of Patent: July 6, 1976
    Assignee: Siemens Aktiengesellschaft
    Inventors: Heinz-Herbert Arndt, Joachim Burtscher, Gustav Fischer, Ernst Haas, Joachim Martin, Gunter Raab, Manfred Schnoeller