Patents by Inventor Karl H. Schmall

Karl H. Schmall 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).

  • Testing apparatus for the calibration of overheating and rail brake locating devices
    Patent number: 5557102
    Abstract: A testing apparatus for the calibration of overheating or rail brake locating devices comprises an IR emitter which is guided in a housing so that it can shift along a curved track to exhibit an appropriately adapted beaming direction in a particular position. An extension piece for the track is provided for further changing the beaming direction.
    Type: Grant
    Filed: March 2, 1995
    Date of Patent: September 17, 1996
    Assignee: VAE Aktiengesellschaft
    Inventors: Othmar Saria, Karl H. Schmall
  • Hazard switch arrangement
    Patent number: 4356362
    Abstract: The invention relates to a hazard switch arrangement for flame-cutting and welding units. As the feeler for detecting mechanical obstacles (14) in the path of the torch nozzle (1), a plurality of feeler rods (7) is provided here. The feeler rods (7) are connected in each case to a plurality of movement switches (holder ring (5), contact ring (11) and feeler rods (7)). The multiplicity of feeler rods and movement switch arrangements guarantees prompt and reliable hazard warning in operation. In a preferred embodiment of the invention, the feeler rods themselves serve as the movement switches.
    Type: Grant
    Filed: November 21, 1980
    Date of Patent: October 26, 1982
    Inventor: Karl H. Schmall