Patents by Inventor Gerhard Hickisch

Gerhard Hickisch 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).

  • Covering and cleaning device for the optical character generator in an electrophotographic printing device
    Patent number: 5192973
    Abstract: A covering and cleaning device for the character generator in an electrophotographic printing device is composed of an electromagnetically actuatable cover element (5) that covers the light exit region of the focusing optics (2) of the character generator when the printer is at a standstill or, respectively, during service work and forms a gap-like opening with the light exit region in an operating condition wherein the cover element releases the light exit region, cleaned air being blown through this gap-like opening. The air forms an air curtain (12) at the optics and thus prevents dust from depositing thereon.
    Type: Grant
    Filed: February 13, 1990
    Date of Patent: March 9, 1993
    Assignee: Siemens Aktiengesellschaft
    Inventor: Gerhard Hickisch