Patents by Inventor John S. Bernhard

John S. Bernhard 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: 4219270
    Abstract: A reproducing apparatus including an image support surface such as a rotatable drum upon which an image may be formed and subsequently transferred to a transfer member such as paper is provided with a cleaner housing including a restrictor guide means positioned such that any transfer member remaining tacked to the image support surface as the image support surface enters the cleaner housing will be intercepted before it completely enters the cleaner housing. Preferably the restrictor guide means is used in conjunction with a blade cleaner for cleaning the image support surface and the blade cleaner and restrictor guide means together with the image support surface form a cavity within which a tacked transfer member is intercepted such that the trailing portion does not enter the cavity. With this apparatus fouling of the cleaner housing and unscheduled maintenance may be avoided.
    Type: Grant
    Filed: August 29, 1979
    Date of Patent: August 26, 1980
    Assignee: Xerox Corporation
    Inventors: Donald J. Weikel, Jr., John S. Bernhard
  • Patent number: 4054381
    Abstract: A toner filter arrangement adapted for use in a cleaning station of a xerographic reproduction machine whereby foreign matter and other contaminants are removed from residual toner prior to its collection in a disposable or re-use container or return to the developer station. The filter arrangement comprises a housing having an input opening through which removed toner enters and an output opening through which filtered toner exits by gravity fed. The housing includes a spiral brush mounted for rotation on a shaft centrally located within the housing and a stationary open mesh screen coaxially located with respect to the shaft. Rotation of the brush operates to sift toner through the screen to the outlet of the filter housing.
    Type: Grant
    Filed: April 5, 1976
    Date of Patent: October 18, 1977
    Assignee: Xerox Corporation
    Inventor: John S. Bernhard
  • Patent number: 4019816
    Abstract: Coating applicator system comprising a stationary blade and a reciprocating applicator blade. A quantity of photoelectrophoretic ink is supplied to the surface of the stationary blade when the applicator plate is cammed out. When the applicator plate is cammed in, the applicator plate moves the ink on the stationary coater blade into the coating gap to supply a uniform quantity of ink to the surface to be coated.
    Type: Grant
    Filed: May 16, 1975
    Date of Patent: April 26, 1977
    Assignee: Xerox Corporation
    Inventor: John S. Bernhard