Patents by Inventor Roger C. Robin

Roger C. Robin 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).

  • Device for the detection of the clogging of an air filter
    Patent number: 5429649
    Abstract: A device for the detection of an air filter having an auxiliary air duct opening upstream and downstream of the air filter so as to generate in the auxiliary duct an air flow due to the head loss of the air filter and having a velocity varying in accordance with the head loss; and an electronic circuit delivering from the signals of first and second sensing devices, a signal representative of a limit clogging of the air filter when the air flow speeds within a main duct and the auxiliary duct are differing by a determined value corresponding to a limit head loss of the air filter, the device being applicable to air conditioning equipments fitting automotive vehicles.
    Type: Grant
    Filed: April 13, 1993
    Date of Patent: July 4, 1995
    Inventor: Roger C. Robin