Patents by Inventor Boon C. Ler

Boon C. Ler 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: 5453644
    Abstract: A personal-care apparatus comprises a load (LD) and a switch (SW), which load (LD) and which switch (SW) are coupled in series between a first (1) and a second (2) supply terminal for receiving an alternating voltage, the personal-care apparatus further comprising a rectifying circuit (RC) for converting the alternating voltage into a direct voltage, and a safety circuit (SC), which is coupled between a third (3) and a fourth (4) supply terminal for receiving the direct voltage and which comprises a capacitive sensor (CS) for the detection of the presence of a part of a human body in the proximity of the personal-care apparatus, the safety circuit being adapted to control the switch (SW) in response to said detection.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: September 26, 1995
    Assignee: U.S. Philips Corporation
    Inventors: Kok K. Yap, Boon C. Ler, Lim: Swee G.
  • Patent number: 5353468
    Abstract: A vacuum cleaner is provided which comprises a housing (100) provided with an electric motor (110) and with an electronic circuit (120) for controlling the electric motor (110), and a suction tube (200) coupled to the housing (100) and comprising a grip (210) with a remote control circuit (220) for controlling the electronic circuit (120), which control circuit (220), in order to provide ease of operation without any disturbances, comprises a capacitive sensor (CS) for detecting the presence of a part of a human body in the proximity of the grip (210), which detection enables the electronic circuit (120) to be controlled by the remote control circuit (220).
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: October 11, 1994
    Assignee: U.S. Philips Corporation
    Inventors: Kok K. Yap, Boon C. Ler, Swee G. Lim