Patents by Inventor Marcel Griessmann

Marcel Griessmann 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: 10728964
    Abstract: A flash unit that includes a flash generator having at least one energy storage element and at least two light source channels as well as having at least two flash tubes, the flash tubes being supplied with energy by the energy storage element by means of the light source channels. The flash unit further includes an energy quantity control device, by means of which it is possible to provide for each light source channel any desired energy quantity from a minimum charge to a maximum charge of the at least one energy storage element, and a color temperature control device, by means of which it is possible to set a color temperature for each light source channel independently of the energy quantity provided therefor. The functions of all light source channels are fully equivalent.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: July 28, 2020
    Assignee: Bron Elektronik AG
    Inventors: Hans-Peter Hauser, Marcel Griessmann, Urs Zeltner
  • Publication number: 20120112658
    Abstract: A flash unit (1) with a flash generator (20) with at least one energy store (21) and at least two luminaire channels and with at least two flash tubes (11, 12, 13), wherein the flash tubes (11, 12, 13) are supplied with energy by the energy store (21) via the luminaire channels, with an energy quantity control apparatus (14), by means of which any desired quantity of energy from the minimum charge up to the maximum charge of the at least one energy store (21) can be provided for each luminaire channel, and with a colour temperature control apparatus (15), by means of which a coloured temperature can be set for each luminaire channel independently of the quantity of energy provided therefor, and a corresponding method therefor.
    Type: Application
    Filed: September 9, 2008
    Publication date: May 10, 2012
    Inventors: Hans-Peter Hauser, Marcel Griessmann, Martin Buser, Urs Zeltner
  • Patent number: 5970799
    Abstract: To improve both the absolute measurement accuracy and the linearity of the characteristic function and the short-time repeatability of measurements at varying flow velocities, particularly at low flow rates, this electromagnetic flow probe (10) is designed to be immersed in a fluid flowing in a pipe (12), which is to be measured, the direction of immersion being virtually perpendicular to the direction of fluid flow. The probe is further designed to be passed through a hole in a wall of the pipe fluid-tight and comprises a circular cylindrical housing (11) having a predetermined outside diameter adapted to the bore. The front end (14) of the housing extends into the fluid and is closed fluid-tight by a front plate (14") of insulating material in the form of a calotte, which has a radius approximately equal to 1.2 to 1.5 times the outside diameter of the housing. A coil assembly (15) is disposed in the housing for establishing a magnetic field (16) extending through the front plate (14") into the fluid.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: October 26, 1999
    Assignee: Endress + Hauser Flowtec AG
    Inventors: Marcel Griessmann, Frank Ohle
  • Patent number: 5533408
    Abstract: To permit this flowmeter to automatically operate either on one measurement principle or on another depending on a selectable foreign-particle content of the fluid, it has a first pair of ultrasonic transducers, one of which is operated as a transmitting transducer and the other as a receiving transducer or vice versa, and which are mounted on the outside surface of a fluid-carrying pipe and separated by a given distance in a direction parallel to the axis of the pipe, with the angle between the direction of the ultrasound and the pipe axis differing from 90.degree.. There is provided a second pair of ultrasonic transducers which are operated simultaneously as transmitting transducers or receiving transducers and are mounted on the outside surface of the pipe and separated by a given distance in a direction parallel to the axis of the pipe, the angle between the direction of the ultrasound and the pipe axis being less than or equal to 90.degree..
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: July 9, 1996
    Assignee: Endress + Hauser Flowtec AG
    Inventors: Daniel Oldenziel, Marcel Griessmann