Patents by Inventor Ulrich Bast

Ulrich Bast 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).

  • Piezo actuator with improved electrical contacting and employment of such a piezo actuator
    Patent number: 6307306
    Abstract: A piezo actuator (1) is disclosed that has a contact lug (20, 21) for the electrical contacting of an electrode (14, 15) of an actuator member (11). Due to an expansion and contraction of the actuator member, a mechanical stress occurs in the contact lug that is minimized in that the contact lug has a device for adapting the expanse to a dimension of the expansion and contraction. The device is, for example, a deformation material in the form of a wire weave. The piezo actuator is utilized for the drive of an injection valve in an internal combustion engine.
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: October 23, 2001
    Assignees: Siemens Aktiengesellschaft, Siemens Matsushita Components GmbH & Co. KG
    Inventors: Ulrich Bast, Dieter Cramer, Gerald Kainz, Carsten Schuh, Andreas Wolff, Karl Lubitz
  • Proof test for ceramic parts
    Patent number: 5647667
    Abstract: For testing structural ceramic parts under overload conditions, a previously calculated temperature distribution is generated on the part by thermal radiation, this temperature distribution inducing the desired test stress or overload. The temperature distribution is measured with topically and temporally resolving temperature sensors, is compared to a desired or calculated temperature distribution, and is regulated by varying the duration and/or location of the radiation influence until the desired temperature distribution has been produced.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: July 15, 1997
    Assignee: Siemsns Aktiengesellschaft
    Inventors: Ulrich Bast, Karl Kempter, Thomas Schulenberg
  • Composite ultrasound transducer and method for manufacturing a structured component therefor of piezoelectric ceramic
    Patent number: 5164920
    Abstract: A composite ultrasound transducer (array) contains piezoelectric ceramic transducer elements which radiate substantially in the longitudinal direction, and are embedded in a polymer matrix. The transducer elements have such a geometrical structure, and are arranged relative to each other, so that the development of oscillation modes perpendicular to the longitudinal direction of the transducer elements is suppressed. A method for manufacturing the composite ultrasound transducer includes the steps of filling a plastic form, having a "negative" of the desired shape of the transducer elements, with ceramic slurry, and pyrolyzing the plastic form after the slurry dries therein. The resulting voids between the hardened ceramic elements are filled with polymer to create the overall composite transducer.
    Type: Grant
    Filed: May 28, 1991
    Date of Patent: November 17, 1992
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ulrich Bast, Hans Kaarmann, Karl Lubitz, Martina Vogt, Wolfram Wersing, Dieter Cramer
  • Method for producing a structured ceramic film or a ceramic member constructed of such films by sintering and useful as ultrasound transducers
    Patent number: 5045437
    Abstract: Method for producing structured ceramic films (111) as well as ceramic members (1) manufactured therefrom and having interior cavities (2) upon empolyment of photolithographic structuring and liquid jet erosion (21).
    Type: Grant
    Filed: October 27, 1989
    Date of Patent: September 3, 1991
    Assignee: Siemens Aktiengesellschaft
    Inventor: Ulrich Bast
  • Method for manufacturing ceramic material having piezo-electric properties
    Patent number: 4876179
    Abstract: A method for manufacturing piezo-electric ceramic materials having predetermined acoustic impedance, wherein internal cavities are generated by a photolithographic process, utilizing a foil stack of green ceramic foils.
    Type: Grant
    Filed: June 10, 1987
    Date of Patent: October 24, 1989
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ulrich Bast, Wolfram Wersing