Patents by Inventor Rolf E. Wilhelms

Rolf E. Wilhelms 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: 5282092
    Abstract: A device or arrangement for recording video and/or audio data with at least one receiving and recording device and a connected or integrated additional audio and/or video data storage means of limited capacity, of 2 to 10 minutes, preferably 3.5 to 6.5 minutes which, when the receiving device is set in operation, commences storage of the data received and stores it in the same sequence as reception and for the storage period corresponding to the limited storage capacity and then in the sequence in which it is stored erases it or disposes of it and accordingly fills up the storage space with the continuously received data and upon commencement of the per se known storage on per se known storage material (recording tape cassettes, video cassettes) either stops or continuously transfers the received data for recording purposes, with a time lag corresponding to the limited capacity of the interim storage means, to the per se known recording carrier.
    Type: Grant
    Filed: January 30, 1991
    Date of Patent: January 25, 1994
    Inventor: Rolf E. Wilhelms
  • Patent number: 5131671
    Abstract: A bicycle wherein at least one portion of the tubular frame is constructed as an air pump portion (1) with an air outlet (4) in the front part of the air pump portion, and in which there is an air piston (5) on an air piston rod (6) which ends in a pump handle (7) disposed outside the air pump portion (1).
    Type: Grant
    Filed: January 31, 1991
    Date of Patent: July 21, 1992
    Inventor: Rolf E. Wilhelms