Patents by Inventor Helmut Pfenning

Helmut Pfenning 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).

  • Returning system for rail-borne transporting carts without self-driving means
    Patent number: 5327836
    Abstract: A returning system for rail-borne transporting carts without self-driving means is provided with an auxiliary drive system which has an auxiliary drive wheel in the form of a friction wheel. The friction wheel clamps, for transporting a cart and cooperating with a contact pressure part with suitable parts of the transporting cart and transfers the latter from a transporting track to a return track located under the transporting track.
    Type: Grant
    Filed: October 23, 1991
    Date of Patent: July 12, 1994
    Assignee: Schott Glaswerke
    Inventors: Hubert Christ, Helmut Pfenning
  • Returning system for rail-bound transport carts without internal drive
    Patent number: 5076172
    Abstract: Transport carts without internal drive which are bound to rails are moved in a returning system on a transport line from a common main drive. In the end area of the transport line, a secondary drive system is provided so that the transport carts are transferrable along a vertical curve into an inverted position onto a return line which is disposed parallel beneath the transport line and is provided with a second main drive system.
    Type: Grant
    Filed: March 11, 1991
    Date of Patent: December 31, 1991
    Assignee: Schott Glaswerke
    Inventors: Erwin Grimm, Christian Koch, Volker Hausler, Helmut Pfenning, Hubert Christ
  • Returning system for rail-bound transport carts without internal drive
    Patent number: 4998481
    Abstract: Transport carts without internal drive which are bound to rails are moved in a returning system on a transport line from a common main drive. In the end area of the transport line, a secondary drive system is provided so that the transport carts are transferrable along a vertical curve into an inverted position onto a return line which is disposed parallel beneath the transport line and is provided with a second main drive system.
    Type: Grant
    Filed: August 17, 1990
    Date of Patent: March 12, 1991
    Assignee: Schott Glaswerke
    Inventors: Erwin Grimm, Christian Koch, Volker Hausler, Helmut Pfenning, Hubert Christ
  • Adjustable gear assembly
    Patent number: 4149429
    Abstract: An adjustable gear train is disclosed wherein play in a train of intermeshing bevel gears is accommodated by forming one of the gears of two radially separated coaxial parts which are axially movable with respect to one another, one of the parts being gear toothed and the other of the parts forming a shaft for the toothed part.
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: April 17, 1979
    Assignee: JENAer Glaswerk Schott & Gen.
    Inventor: Helmut Pfenning