Patents by Inventor Kaarle Vaahtoranta

Kaarle Vaahtoranta 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).

  • Apparatus in medicine for the monitoring and or recording of the body movements of a person on a bed, for instance of a patient
    Patent number: 4320766
    Abstract: A capacitive motion sensor placed under a mattress or the like for monitoring the movements of a person. The sensor uses an active layer consisting of two courses of dielectric material placed in contact with one another. Movements of a person on top of the mattress cause the courses to move relative to one another, thereby generating an electric change in the active layer which is detected by a pair of spaced elements which form a capacitive antenna means.
    Type: Grant
    Filed: March 10, 1980
    Date of Patent: March 23, 1982
    Assignee: Instrumentarium Oy
    Inventors: Jukka Alihanka, Kaarle Vaahtoranta, Stig-Eyrik Bjorkqvist