Patents by Inventor Gerald Groetsch

Gerald Groetsch 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: 4990012
    Abstract: In writing instruments having an ink or India ink reservoir, the reservoir should remain sealed prior to first use of the instrument. For this reason, the writing tip and the shaft containing the reservoir are delivered to the user separately. When the instrument is to be used for the first time, the writing tip is screwed into the shaft until the reservoir is pierced by the writing tip. The writing instrument of the invention enables delivery to the user in which the writing tip is already screwed into the shaft without piercing the reservoir. The writing tip has a removable separator piece which comes to rest at the front edge of the instrument shaft when the writing tip has been screwed in and thus limits the screw-in depth of the writing tip, the back end of the writing tip being maintained at a distance from the plug of the reservoir.
    Type: Grant
    Filed: December 6, 1988
    Date of Patent: February 5, 1991
    Assignee: J.S. Staedtler GmbH & Co.
    Inventors: Gerald Groetsch, Ute Herold
  • Patent number: 4952088
    Abstract: To screw the writing tip in and out of the instrument shaft of a writing or drawing instrument, the cap has been used as a screwing tool. The cap is usually fabricated with a many-sided receiving bore for this purpose as an extension of its bore, which can be placed onto the writing tip after the cap has been turned around. As a result, the cap is relatively long. The writing or drawing instrument of the present invention in contrast, has a cap of standard length. A many-sided receiving bore which is to be placed on the writing tip, in order to be able to screw it in or out, is formed, in part, by the clip of the cap, and in part by the wall of cap in the region where the clip is connected to the cap.
    Type: Grant
    Filed: December 6, 1988
    Date of Patent: August 28, 1990
    Assignee: J.S. Staedtler GmbH & Co.
    Inventor: Gerald Groetsch