Patents by Inventor Wolfgang Hahmann

Wolfgang Hahmann 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: 20240200542
    Abstract: Disclosed is a conveying device for fluids with an inlet and an outlet and a conveying part which is connected therebetween and can be actuated by a drive part, wherein the conveying part has a fluid-tight media-separating device with a variable chamber volume, which becomes connected in a fluid-conducting manner via its receiving chamber to the inlet or the outlet, and which, by means of the drive part, receives fluid via the inlet as part of an intake stroke, increasing the chamber volume, and discharges the received fluid via the outlet as part of a discharge stroke, reducing the size of said chamber volume.
    Type: Application
    Filed: April 13, 2022
    Publication date: June 20, 2024
    Applicant: Hydac Technology GmbH
    Inventors: Wolfgang Hahmann, Frank Bauer, Peter Kloft
  • Publication number: 20240011478
    Abstract: A test device for a fluidic pump device (10), which can be driven by a drive device and of which the pump rotational speed that leads to a defined fluid volumetric flow on the output side (12) of the pump device (10) is known, is characterized in that the fluid volumetric flow is conducted at least temporarily via a pressure influencing device (22) which, during operation of the pump device (10), brings about a pressure drop, by way of the decrease of which an evaluation device (32) makes a statement about a reduced functional capability of the pump device (10) possible.
    Type: Application
    Filed: November 15, 2021
    Publication date: January 11, 2024
    Inventors: Joachim MORSCH, Wolfgang HAHMANN, Gerd SCHNEIDER
  • Patent number: 8614522
    Abstract: An energy converting device, particularly for converting mechanical energy to hydraulic energy and from it into electrical energy, uses as an energy transport medium, a control fluid guided in two different control circuits. The control circuits have an operative connection to each other by a coupling device (32). One control circuit (28) serves for feeding in energy, particularly in the form of mechanical energy. The other control circuit serves for discharging energy in the form of converted energy, particularly electrical energy.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: December 24, 2013
    Assignee: Hydac System GmbH
    Inventors: Wolfgang Hahmann, Norbert Böhmer, Daniel Thull, Frank Herold
  • Publication number: 20120124825
    Abstract: The invention relates to a lashing platform for inserting and removing retaining hardware for twist-lock containers, having a dead plate for a container, the dead plate being supported on a rigid base by hydraulic displacers, and having a pressure medium store fluidically connected to the hydraulic displacers, wherein the hydraulic displacers under synchronized asymmetrical loading of the dead plate.
    Type: Application
    Filed: April 22, 2010
    Publication date: May 24, 2012
    Applicant: HYDAC SYSTEM GMBH
    Inventor: Wolfgang Hahmann
  • Publication number: 20110012368
    Abstract: The invention relates to an energy converting device, particularly for converting mechanical to hydraulic energy, and therefrom into electrical energy, using as an energy transport medium a control fluid guided in two different control circuits having an operative connection to each other by means of a coupling device (32), wherein the one control circuit (28) serves for feeding in energy, particularly in the form of mechanical energy, and the other control circuit serves for discharging energy in the form of converted energy, particularly electrical energy.
    Type: Application
    Filed: February 5, 2009
    Publication date: January 20, 2011
    Inventors: Wolfgang Hahmann, Norbert Böhmer, Daniel Thull, Frank Herold
  • Publication number: 20090101322
    Abstract: Heat exchange device with a plate element (1) which has a shaped part (5) which extends over a heat exchange surface, is of at least partly flexible design and forms a partial boundary of a cavity (13), through which a heat transfer medium can flow and which is tightly closed off on the base side by a web (11) which forms on the heat exchange surface the contact surface for the heat transfer to a body (3), against which body the plate element (1) can be placed, wherein a flexible retaining plate (21) for pressing the plate element (1) against the body (3) rests on that top side of the shaped part (5) which is remote from the heat exchange surface on the base side, and wherein the flexibility of retaining plate (21) and the deformability of shaped part (5) and web (11) on the base side are selected in such a way that the plate element (1) can be adapted to the geometry of the body (3).
    Type: Application
    Filed: February 27, 2007
    Publication date: April 23, 2009
    Inventors: Wolfgang Hahmann, Rudolf Kunz
  • Publication number: 20070158926
    Abstract: The invention relates to a device for driving movable mechanical components (10; 12a, b), at least two (10; 12a, b) of which are effectively interconnected in such a way that one component (10) can be driven by means of the other component (12a, b), play being provided between said two components (10; 12a, b). Said play between the components (10; 12a, b) can be eliminated by moving or bracing at least said two components (10; 12a, b) towards or against each other with the aid of a hydraulic mechanism (14).
    Type: Application
    Filed: November 9, 2004
    Publication date: July 12, 2007
    Inventor: Wolfgang Hahmann
  • Patent number: 6105724
    Abstract: A lubrication system for supplying lubricant to a plurality of antifriction bearings composed of inner and outer bearing rings and a plurality of rolling elements mounted between the rings. The lubricant is intermittently supplied to the region of the rolling elements, with the amount of each intermittent supply being determined as a function of operating data which are continuouslu acquired from the bearing.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: August 22, 2000
    Assignee: Barmag AG
    Inventors: Albert Stitz, Wolfgang Hahmann, Franz Peter Salz
  • Patent number: 5971107
    Abstract: A lubrication system for supplying lubricant to a plurality of antifriction bearings, and which has a lubricant supply tank and a closed circuit lubricant supply line having two ends which communicate with the tank. A pump circulates the lubricant through the line, and a pressure regulating valve in the downstream end portion of the line maintains a desired pressure in the line. A plurality of tap lines lead from the closed circuit supply line to respective bearings via a metering or controllable valve.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: October 26, 1999
    Assignee: Barmag AG
    Inventors: Albert Stitz, Wolfgang Hahmann, Franz Peter Salz
  • Patent number: 5711615
    Abstract: The present invention relates to an antifriction bearing with an external lubricant supply system, which includes a lubricant duct which extends through the outer ring or inner ring of the bearing, and which terminates in the direct vicinity of the rolling elements of the bearing.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: January 27, 1998
    Assignee: Barmag AG
    Inventors: Albert Stitz, Wolfgang Hahmann, Franz Peter Salz
  • Patent number: 4986074
    Abstract: An article handling apparatus is disclosed which comprises two independently controllable fluid actuated drives. The first fluid actuated drive comprises a cylinder and a differential piston which defines a large chamber and a smaller chamber. Also, a control system is provided which maintains a differential pressure between the large and small chambers in each of several operating positions. The second fluid actuated drive is mounted to the movable member of the first drive, and the second drive is controlled by fluid lines leading respectively to the large and small chambers of the first drive.
    Type: Grant
    Filed: December 21, 1988
    Date of Patent: January 22, 1991
    Assignees: Barmag AG, Edelhoff Polytechnik GmbH & Co.
    Inventors: Wolfgang Hahmann, Johannes Kirchhoff, Georg Sandkuhler
  • Patent number: 4763691
    Abstract: A hydraulic control valve is disclosed which is adapted to independently control the flow of hydraulic fluid to several consumer lines. The control valve includes a housing having a central bore, a pair of axially spaced apart consumer lines comunicating with the bore, a tank line communicating with the bore and positioned between the consumer lines, and a pair of hydraulic inlet lines communicating with the bore on the outer side of respective ones of the cosumer lines. A pair of slide valves are positioned in the bore, and each slide valve is supported in a neutral position by a coil spring. The two slide valves may be independently moved from their neutral position by a hydraulic control system, so that each slide valve is adapted to selectively establish communication between one of the consumer lines and the tank line, and between such consumer line and one of the hydraulic inlet lines.
    Type: Grant
    Filed: September 3, 1986
    Date of Patent: August 16, 1988
    Assignee: Barmag Barmer Maschinenfabrik Aktiengesellschaft
    Inventor: Wolfgang Hahmann
  • Patent number: 4738104
    Abstract: A hydraulic power system is disclosed which comprises an internal combustion engine having a speed regulator, and which serves to drive a hydraulic system including a pump and a consumer or load. A throttle valve is positioned in the hydraulic system, and the throttle valve is connected to an adjustable controller, such that the volume flow rate to the consumer is proportional to the control signal delivered to the throttle valve by the controller. The same control signal of the controller is also delivered to the speed regulator of the engine. In one disclosed embodiment, the hydraulic system includes a plurality of consumers connected to a common pump, and each consumer includes an associated throttle valve and controller. Also, means are provided for weighting the several control signals from the controllers, and summing the weighted signals so that a composite adjusting signal is delivered to the speed regulator of the engine.
    Type: Grant
    Filed: March 20, 1986
    Date of Patent: April 19, 1988
    Assignee: Barmag AG
    Inventors: Wolfgang Hahmann, Claus Kirchherr