Patents by Inventor Robert H. Munning Schmidt

Robert H. Munning Schmidt 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).

  • Battery-powered device
    Patent number: 4835453
    Abstract: In a device where a load (R.sub.L) is powered by a battery (6) if a first detection device (100) detects that the expired discharge time measured by measurement means (40, 70) is equal to a first reference value stored in a memory (22), a first time measurement apparatus (40, 80) measures the time during which the load is powered by the battery. When the load is switched off and is not connected to the AC supply voltage via a power-supply circuit (1), the battery is discharged by a discharger (9). Second time-measurement apparatus (50, 80) measure the time during which the discharger is operative until a second detection device (13) detects a battery voltage at which the battery may be regarded as fully discharged.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: May 30, 1989
    Assignee: U.S. Philips Corp.
    Inventors: Robert H. Munning Schmidt, Geert J. Bosscha