Patents by Inventor Bruno Kiefer

Bruno Kiefer 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).

  • Method for producing a slab trackway
    Patent number: 9157192
    Abstract: In order to produce a slab track for rail vehicles with an emergency pathway (12) for road vehicles, a prefabricated track section with rails (8) and sleepers (5) is supported and positioned on a substructure (1) by means of a supporting and aligning device (4). Subsequently, a track slab (10) is produced by casting in the sleepers (5). The part of the sleepers (5) that projects from the track slab (10) and the rails (8) are separated by formwork elements, and an emergency pathway (12) is applied to the track slab (10) by casting.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: October 13, 2015
    Assignee: SONNEVILLE AG
    Inventors: Peter Laborenz, Bruno Kiefer, Anabel Hengelmann
  • METHOD FOR PRODUCING A SLAB TRACKWAY
    Publication number: 20130277441
    Abstract: In order to produce a slab track for rail vehicles with an emergency pathway (12) for road vehicles, a prefabricated track section with rails (8) and sleepers (5) is supported and positioned on a substructure (1) by means of a supporting and aligning device (4). Subsequently, a track slab (10) is produced by casting in the sleepers (5). The part of the sleepers (5) that projects from the track slab (10) and the rails (8) are separated by formwork elements, and an emergency pathway (12) is applied to the track slab (10) by casting.
    Type: Application
    Filed: December 23, 2011
    Publication date: October 24, 2013
    Inventors: Peter Laborenz, Bruno Kiefer, Anabel Hengelmann
  • Escalator with driver device for carrying of transportation carts
    Patent number: 4235327
    Abstract: Escalator with driver device for carrying of transportation carts on the escalator steps. The transportation carts are secured against rolling down the escalator steps by a carrying and abutment device, which device is arranged on both sides of the transportation carts along the balustrades.
    Type: Grant
    Filed: February 12, 1979
    Date of Patent: November 25, 1980
    Assignee: O&K Orenstein & Koppel Aktiengesellschaft
    Inventors: Helmut Heusler, Bruno Kiefer