Patents by Inventor Franciscus C. A. J. Jacobs

Franciscus C. A. J. Jacobs 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 of manufacturing a saddle-shaped deflection coil for a picture display tube
    Patent number: 5340044
    Abstract: A method of continuously winding in a recess-shaped winding space a saddle-shaped, flared deflection coil having two arcuate connection portions at the ends and two interposed coil flanks. Since a plurality of evenly distributed projections is inserted into the winding space during winding, reset points are provided in portions where the coil flanks are wound, which reset points counteract possible wire positioning errors (so-called winding spread) giving rise to a spread of line astigmatism when the coil is combined with a display tube.
    Type: Grant
    Filed: April 26, 1993
    Date of Patent: August 23, 1994
    Assignee: U.S. Philips Corporation
    Inventors: Franciscus M. P. P. Doomernik, Franciscus C. A. J. Jacobs, Nicolaas G. Vink
  • Method of manufacturing a saddle-shaped deflection coil for a picture display tube and display tube comprising a deflection system using saddle-shaped deflection coils
    Patent number: 5013964
    Abstract: Method of continuously winding in a gap-shaped winding space a saddle-shaped, flared deflection coil having a flange-shaped connection portion at its widest and extending transversely to the longitudinal axis. Since at least one symmetrical pair of pins is introduced at the front end of the coil into the winding space transversely to the plane of the flange-shaped connection portion and at least one further symmetrical pair of pins is introduced at the front end of the coil into the winding space transversely to the plane of the longitudinal turns, the designer of the coil is given an extra modulation possibility which can be utilized, for example to further reduce the east-west raster distortion.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: May 7, 1991
    Assignee: U.S. Philips Corporation
    Inventors: Nicolaas G. Vink, Franciscus C. A. J. Jacobs, Franciscus M. P. P. Doomernik
  • Combination of a display tube and a deflection unit, with reduced north-south raster error
    Patent number: 5001390
    Abstract: Deflection unit for use with a color display tube in which the line deflection coils are of the saddle type and have a front flange which is formed in such a way that a central portion has a part located closest to the axis of the display tube and being parallel to the surface of the display tube and a part located farthest away from the axis of the display tube and being transverse to the axis of the display tube, such that the north-south raster error is reduced.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: March 19, 1991
    Assignee: U.S. Philips Corporation
    Inventors: Nicolaas G. Vink, Franciscus C. A. J. Jacobs, Franciscus M. P. P. Doomernik
  • Method of manufacturing a saddle-shaped deflection coil for a picture display tube
    Patent number: 4937931
    Abstract: Method of continuously winding a saddle-shaped deflection coil flaring from a rear connection portion towards a front connection portion, in which at least one connection portion is given a convex shape during winding and in which after winding the convex connection portion is given a concave shape by means of a die, whereafter the coil turns are united to a compact assembly by means of a heating step.
    Type: Grant
    Filed: January 8, 1990
    Date of Patent: July 3, 1990
    Assignee: U.S. Philips Corporation
    Inventors: Franciscus C. A. J. Jacobs, Nicolaas G. Vink, Franciscus M. P. P. Doomernik