Patents by Inventor Gerardus A. J. Hermkens

Gerardus A. J. Hermkens 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: 4744253
    Abstract: A system is provided for determining the pressure exerted on an object passed between two rollers. The system comprises a sensor of pressure-sensitive material and a transmission/receiving device for generating an ultrasonic wave in the sensor and then detecting the reflected pulse received by the sensor. The time difference between the transmission pulse and the pulse received by the sensor is related to the pressure exerted on the object in the nip. Preferably, the sensor consists of a laminated film comprising in sequence: a first layer of electrically conducting material; a layer of polyvinylidene fluoride; a second layer of electrically conducting material having detector regions; a layer of dielectric material; and a third layer of electrically conducting material.
    Type: Grant
    Filed: September 11, 1986
    Date of Patent: May 17, 1988
    Assignee: Oce-Nederland B.V.
    Inventor: Gerardus A. J. Hermkens
  • Patent number: 4688931
    Abstract: A conveyor system is described, consisting of a pair of electrically conductive rollers about which an insulating belt is trained and a static-charge eliminator. The static charge of the belt and, thus, the conveyor system is reduced by providing the electrically conductive rollers with an insulating sleeve, guaranteeing the reliable transport of the document. The conveyor system may be used in a copier for moving originals onto a glass platen or copies through the toner transferring section.
    Type: Grant
    Filed: September 26, 1985
    Date of Patent: August 25, 1987
    Assignee: Oce-Nederland B.V.
    Inventor: Gerardus A. J. Hermkens
  • Patent number: 4660824
    Abstract: In a device for collating sheets of paper having at least one receiving surface made from electrically insulating material, a set of rolls for feeding a sheet from one side of the receiving surface and depositing it thereon and an improved charge remover for removing electrical charges from a deposited sheet comprising at least one conductor connected to earth potential which is disposed on the side of the insulated receiving surface remote from the side where the sheet enters and which forms an abutment with which the leading edge of each sheet comes into contact when it is being deposited on the insulated receiving surface, thereby removing electrical charges from the entire sheet.
    Type: Grant
    Filed: September 26, 1985
    Date of Patent: April 28, 1987
    Assignee: Oce-Nederland B.V.
    Inventors: Gerardus A. J. Hermkens, Augustinus W. M. Lambregts