Patents by Inventor André Wicklein

André Wicklein 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).

  • Method and apparatus for determining a coefficient of friction at a test site on a surface of a contact lens
    Patent number: 10809181
    Abstract: The present invention relates to a method and an apparatus (5) for determining a coefficient of friction at a test site (11) on a surface (10) of a contact lens (1). The apparatus comprises: a lens holder (2) arranged at least partially in a receptacle (6); a slide (4) comprising a counter surface (40) made of lapped aluminum for contacting the test site (11); a load generator (7) configured to apply a predetermined normal load (Fn) between the counter surface (40) and the test site; a drive (8) configured to generate a sliding movement between the counter surface (40) and the contact lens in direction located in a plane perpendicular to the normal load (Fn); and a force sensor (9) configured to measure a tangential frictional force (Ft) between the test site and the counter surface (40) along the direction of the sliding movement.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: October 20, 2020
    Assignee: Alcon Inc.
    Inventors: Justyna Justynska-Reimann, Markus Grebe, Michael Ruland, André Wicklein
  • METHOD AND APPARATUS FOR DETERMINING A COEFFICIENT OF FRICTION AT A TEST SITE ON A SURFACE OF A CONTACT LENS
    Publication number: 20190064053
    Abstract: The present invention relates to a method and an apparatus (5) for determining a coefficient of friction at a test site (11) on a surface (10) of a contact lens (1). The apparatus comprises: a lens holder (2) arranged at least partially in a receptacle (6); a slide (4) comprising a counter surface (40) made of lapped aluminum for contacting the test site (11); a load generator (7) configured to apply a predetermined normal load (Fn) between the counter surface (40) and the test site; a drive (8) configured to generate a sliding movement between the counter surface (40) and the contact lens in direction located in a plane perpendicular to the normal load (Fn); and a force sensor (9) configured to measure a tangential frictional force (Ft) between the test site and the counter surface (40) along the direction of the sliding movement.
    Type: Application
    Filed: August 23, 2018
    Publication date: February 28, 2019
    Inventors: Justyna Justynska-Reimann, Markus Grebe, Michael Ruland, André Wicklein