Patents by Inventor Ralf L. Klinkhammer

Ralf L. Klinkhammer 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: 4228579
    Abstract: A method and an apparatus of cutting a strip of film and a protective paper tape to length, winding them and inserting them into a cassette. The strip of film is wound together with the protective paper tape which is offset in the longitudinal direction and cut to length in distribution wheels and after being fed via a guide duct to a spindle is wound and inserted into a cassette housing which is open on one side. The end of the protective paper tape is welded on a spool held by means of vacuum into the cassette housing before closure of the cassette housing with the cover.
    Type: Grant
    Filed: February 27, 1979
    Date of Patent: October 21, 1980
    Assignee: AGFA-Gevaert, A.G.
    Inventors: Franz-Heinz Dunkel, Ralf L. Klinkhammer, Heinz Nebel, Siegfried Spanner, Gerd Seibel
  • Patent number: 4189105
    Abstract: This invention relates to an apparatus for automatically winding a reel of perforated film strip and at the same time inserting a perforated covering strip, which produces reels of uniform quality with an accurately defined starting position and with the perforations of the film strip and of the extension piece in exact alignment with each other.
    Type: Grant
    Filed: October 16, 1978
    Date of Patent: February 19, 1980
    Assignee: AGFA-Gevaert, A.G.
    Inventors: Ralf L. Klinkhammer, Franz Hoffacker, Gunter H. Steinbuchel, Manfred Hilgers
  • Patent number: 4180905
    Abstract: This invention relates to an automatic device for loading cassettes with roll films, comprising a magazine for roll films, a magazine for cassettes, respective feed devices with separator units for the roll films and the cassettes, a film loading device and a conveying means for carrying off filled cassettes, wherein the film loading device comprises a channel with guides and is arranged along the path of descent of the roll film. A lowerable positioning means is located beneath the channel for the lower cassette section and a pivotable lever with a suction device for handling the upper section is attached to the positioning means.
    Type: Grant
    Filed: April 3, 1978
    Date of Patent: January 1, 1980
    Assignee: AGFA-Gevaert, A.G.
    Inventors: Ralf L. Klinkhammer, Artur Klotz
  • Patent number: 3986879
    Abstract: A roll fastening is based on the fact that the beginning of the film is stuck to the leader by means of an adhesive strip (film sticker). In this way, the outermost turn of the leader is lightly bonded to a preceding turn. To this end, a first hole is punched into the leader in the vicinity of the film sticker, so that part of the tacky surface of the film sticker remains exposed, and another hole with a larger surface area than the first hole is punched into the leader at the same level as and at a distance of d..pi. (d = roll diameter) from the first hole.
    Type: Grant
    Filed: September 3, 1974
    Date of Patent: October 19, 1976
    Assignee: AGFA-Gevaert, A.G.
    Inventor: Ralf L. Klinkhammer