Patents by Inventor Chaim Chacham

Chaim Chacham 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: 5633565
    Abstract: An electrical flasher circuit has improved operating characteristics, in particular by providing continuous illumination for a long period of time from a fully charged solar battery. The circuit employs a solar battery recharging circuit component that achieves full charge in a short period of time. The flasher circuit may be used in roadside warning device having a sign member with a warning image. Placed around the warning image are a plurality of light emitters for providing a visual warning during evening and night hours. The light emitters are powered by a solar energy source connected to a flasher circuit including an oscillator for causing the light emitters to be energized in a particular sequence. When the device is exposed to sunlight, the battery is disconnected to avoid unnecessary draining of the battery.
    Type: Grant
    Filed: September 2, 1994
    Date of Patent: May 27, 1997
    Assignee: Interplex Solar, Inc.
    Inventors: Roni Friedman, Chaim Chacham, William F. Richardson, Jr., Brian N. Raymond
  • Patent number: 5252893
    Abstract: A rechargeable electronic flasher powered by a solar panel and solar-rechargeable battery. The circuit has particular application as an auxiliary safety measure for use in roadway cats' eyes, or in memorial symbols for mounting on, or near, grave stones and the like so as to provide substantially perpetual illumination. Minimum charging time is necessary, while operation on battery power is extended to many days, rather than hours. The circuit can also be set to flash at a rate above the frequency the eye can distinguish, creating a substantially constant light.
    Type: Grant
    Filed: October 3, 1991
    Date of Patent: October 12, 1993
    Assignee: Interplex Solar Corporation
    Inventors: Chaim Chacham, Roni Friedman, Uri Amir