Patents by Inventor Clarence Berggren

Clarence Berggren 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: 5620156
    Abstract: A device for operating a switch of a railway track including switch blades. The device includes a drive module, a linear operating module coupled to and driven by the drive module for generating a linear movement and at least one locking module interconnected between the linear operating module and the switch blades. The locking module transfers the linear movement from the linear operating module to the switch blades, thereby moving the switch blades across a longitudinal direction of the railway track from a first position to a second position. The at least one locking module also locks the switch blades in the first position or the second position independently of the linear operating module. A girder box forms a sleeper of the railway track for housing the drive module, the linear operating module, and the at least one locking module. The device also includes apparatus for joining the drive module, the linear operating module, and the at least one locking module.
    Type: Grant
    Filed: November 24, 1995
    Date of Patent: April 15, 1997
    Assignee: ABB Signal AB
    Inventors: Clarence Berggren, Lars Eklund, Uno Norrg.ang.rd