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).

  • Patent number: 11105416
    Abstract: A pressure back-up valve (300) includes a release piston (320) movable between first and second stop positions and a closing body (340) movable to a closing position in which this separates first and second connection pressure chambers (327, 326) when the release piston (320) is in a first stop position. The release piston (320) moves the closing body (340), in the second stop position, into an opening position. The release piston (320) is pressurizable on a first pressure surface (A1) from a first side via a third connection pressure chamber (324) and on a second pressure surface (A2) from a second side via a second connection pressure chamber (326). The closing body (340) is pressurized, in the closing position, from a first side via the second connection pressure chamber (326) on a first pressure surface (A4) and from a second side via the first connection pressure chamber (327) on a second pressure surface (A3) of the closing body (34).
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: August 31, 2021
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Florian Langenbacher, Tobias Schmidt, Hans-Joachim Martin, Rainer Novak
  • Publication number: 20200393040
    Abstract: A pressure back-up valve (300) includes a release piston (320) movable between first and second stop positions and a closing body (340) movable to a closing position in which this separates first and second connection pressure chambers (327, 326) when the release piston (320) is in a first stop position. The release piston (320) moves the closing body (340), in the second stop position, into an opening position. The release piston (320) is pressurizable on a first pressure surface (A1) from a first side via a third connection pressure chamber (324) and on a second pressure surface (A2) from a second side via a second connection pressure chamber (326). The closing body (340) is pressurized, in the closing position, from a first side via the second connection pressure chamber (326) on a first pressure surface (A4) and from a second side via the first connection pressure chamber (327) on a second pressure surface (A3) of the closing body (34).
    Type: Application
    Filed: June 12, 2020
    Publication date: December 17, 2020
    Inventors: Florian Langenbacher, Tobias Schmidt, Hans-Joachim Martin, Rainer Novak
  • Publication number: 20200292065
    Abstract: A hydraulic control unit (10) for a transmission (36) of a motor vehicle drive train may include a housing top section (12), a first valve housing (14) having a first valve (60), and a second valve housing (16) having a second valve (62). The first valve (60) is aligned along a first direction (30) and the second valve (62) is aligned along a second direction (32), wherein the first direction (30) differs from the second direction (32).
    Type: Application
    Filed: March 10, 2020
    Publication date: September 17, 2020
    Inventors: Tobias Pfleger, Hans-Joachim Martin, Marco Berner, Jens Schmidt
  • Patent number: 10036468
    Abstract: A hydraulic control unit for a transmission includes a lower side housing, an upper side housing and an intermediate plate. The lower side housing and the upper side housing form a hydraulic supply channel section, which is connected in the intermediate plate by an aperture. At the inlet of the aperture, at least one recess with a predetermined depth is provided for bounding an inlet cross-section.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: July 31, 2018
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Werner Zeller, Hans-Joachim Martin
  • Patent number: 9897197
    Abstract: A valve system for controlling a system pressure control system, in particular a hydraulic control unit of an automatic transmission, includes a multi-stage system pressure valve, a pilot valve and a control valve with a control piston downstream from the pilot valve that governs the pressure at a differential area of the system pressure valve, depending on the pilot pressure. The pilot pressure/system pressure characteristic curve features a continuous development, and whereas, from a predefined pilot pressure, on the basis of a sudden change to the dependency of the change to the system pressure as a function of the change to the pilot pressure, the gradient of the system pressure as a function of the pilot pressure is significantly steeper than that prior to the predefined pilot pressure.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: February 20, 2018
    Assignee: ZF Friedrichshafen AG
    Inventors: Thilo Schmidt, Hans-Joachim Martin, Hans-Juergen Bader
  • Publication number: 20160341306
    Abstract: A hydraulic control unit for a transmission includes a lower side housing, an upper side housing and an intermediate plate. The lower side housing and the upper side housing form a hydraulic supply channel section, which is connected in the intermediate plate by an aperture. At the inlet of the aperture, at least one recess with a predetermined depth is provided for bounding an inlet cross-section.
    Type: Application
    Filed: May 9, 2016
    Publication date: November 24, 2016
    Inventors: Werner Zeller, Hans-Joachim Martin
  • Patent number: 8944232
    Abstract: A hydraulic shifting device for an automatic transmission for engaging and disengaging a parking lock. The shifting device comprises a parking lock cylinder (203) for actuating the parking lock, and a parking lock valve (201) which, for hydraulic control of the parking lock cylinder (203), can be switched to at least first and second shift positions. In this case the hydraulic shifting device comprises a further parking lock valve (202), and the two parking lock valves (201, 202) and the parking lock cylinder (203) are designed and connected with one another in such manner that the parking lock can only be disengaged by pressurizing the parking lock cylinder (203) if the two parking lock valves (201, 202) are each switched to a particular shift position.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: February 3, 2015
    Assignee: ZF Friedrichshafen AG
    Inventors: Thilo Schmidt, Markus Herrmann, Hans-Joachim Martin
  • Publication number: 20140305243
    Abstract: A valve system for controlling a system pressure control system, in particular a hydraulic control unit of an automatic transmission, includes a multi-stage system pressure valve, a pilot valve and a control valve with a control piston downstream from the pilot valve that governs the pressure at a differential area of the system pressure valve, depending on the pilot pressure. The pilot pressure/system pressure characteristic curve features a continuous development, and whereas, from a predefined pilot pressure, on the basis of a sudden change to the dependency of the change to the system pressure as a function of the change to the pilot pressure, the gradient of the system pressure as a function of the pilot pressure is significantly steeper than that prior to the predefined pilot pressure.
    Type: Application
    Filed: April 9, 2014
    Publication date: October 16, 2014
    Applicant: ZF Friedrichshafen AG
    Inventors: Thilo Schmidt, Hans-Joachim Martin, Hans-Juergen Bader
  • Patent number: 8662272
    Abstract: A pressure medium supply device of a hydraulically actuated shifting element (K1, K2) comprises at least one pressure medium supply duct (1, 2) in communication with a pump (4) and a line (3) for pre-filling of the shifting element. An additional pressure-retaining valve (9, 9?) or a check diaphragm is integrated in the pressure medium supply duct (1, 2), between the shifting element and the shifting element valve (6, 7), and can be closed in the draining direction of the pressure medium supply duct (1, 2). The pressure-retaining valve (9, 9?) is designed such that the shifting element can be drained and the pressure medium supply device can be vented.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: March 4, 2014
    Assignee: ZF Friedrichshafen AG
    Inventors: Hans-Joachim Martin, Anton Fritzer
  • Publication number: 20120318687
    Abstract: A perfume or perfumed product which is associated with a package having seeds impregnated within or otherwise associated therewith. In one embodiment, the seeds are impregnated within or on, or otherwise associated with, the packaging material, and are adapted to be planted in soil to permit the seeds to grow. Alternatively, the seeds may simply reside in a pouch or other container which is disposed within or otherwise associated with the package, where the seeds may be planted in soil to permit the seeds to grow. The seeds grow one or more botanicals that correspond to one or more ingredients of the perfume or perfumed product contained within the package so that the purchaser of the product may grow plants that smell like one or more of the ingredients of the perfume or perfumed product.
    Type: Application
    Filed: June 15, 2012
    Publication date: December 20, 2012
    Inventor: Mensing Joachim Martin
  • Publication number: 20120085614
    Abstract: A pressure medium supply device of a hydraulically actuated shifting element (K1, K2) comprises at least one pressure medium supply duct (1, 2) in communication with a pump (4) and a line (3) for pre-filling of the shifting element. An additional pressure-retaining valve (9, 9?) or a check diaphragm is integrated in the pressure medium supply duct (1, 2), between the shifting element and the shifting element valve (6, 7), and can be closed in the draining direction of the pressure medium supply duct (1, 2). The pressure-retaining valve (9, 9?) is designed such that the shifting element can be drained and the pressure medium supply device can be vented.
    Type: Application
    Filed: June 1, 2010
    Publication date: April 12, 2012
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Hans-Joachim Martin, Anton Fritzer
  • Patent number: 7997505
    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: Grant
    Filed: July 30, 2007
    Date of Patent: August 16, 2011
    Assignee: ZF Friedrichshafen AG
    Inventors: Hans-Joachim Martin, Anton Fritzer
  • Patent number: 7950323
    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: Grant
    Filed: February 2, 2007
    Date of Patent: May 31, 2011
    Assignee: ZF Friedrichshafen AG
    Inventors: Rudolf Kauffeldt, Hans-Joachim Martin, Gerhard Gumpoltsberger, Michael Ebenhoch, Wolfgang Rieger, Michael Drabek, Stefan Csajagi
  • Patent number: 7819332
    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: Grant
    Filed: September 27, 2006
    Date of Patent: October 26, 2010
    Assignee: ZF Friedrichshafen AG
    Inventors: Hans-Joachim Martin, Anton Fritzer
  • 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
  • Patent number: D643724
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: August 23, 2011
    Inventors: Christopher J. Donnelly, Joachim Martin Mensing
  • Patent number: D664445
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: July 31, 2012
    Inventors: Christopher J. Donnelly, Joachim Martin Mensing
  • Patent number: D664447
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: July 31, 2012
    Inventors: Christopher J. Donnelly, Joachim Martin Monsing
  • Patent number: D679601
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: April 9, 2013
    Inventors: Christopher J. Donnelly, Joachim Martin Monsing