Patents by Inventor Henricus M. C. van Gestel

Henricus M. C. van Gestel 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).

  • Lamp/reflector assembly and electric lamp for use therein
    Patent number: 5235498
    Abstract: A lamp/reflector assembly has an electric lamp (10) having a base (13) presenting projections (17-19) which touch an imaginary sphere having its center of curvature coincident with the electrical element (12) of the lamp. The reflector (1) of the assembly has an opening (6) through which the lamp (10) extends, and a convex, spherically curved mounting surface (30) aligned with respect to the opening (6). The mounting surface (30) has its center of curvature substantially coincident with the optical center (4) of the reflector (1). The projections (17-19) of the base bear against the mounting surface (30) and the optical center (4) of the reflector (1) coincides with the electrical element (12), also when the lamp occupies one of a number of positions tilted with respect to the optical axis (3) of the reflector (1).
    Type: Grant
    Filed: January 29, 1992
    Date of Patent: August 10, 1993
    Assignee: U.S. Philips Corporation
    Inventors: Hendrikus A. M. Van Dulmen, Henricus M. C. Van Gestel
  • Assembly of a light housing and an electric lamp
    Patent number: 4943897
    Abstract: The assembly comprises a light housing (1) provided with a resilient holding device (7, 7', 8) for an electric lamp (31). The holding device has a first holding member (7, 7') which is bipartite (7, 7'), is rigidly connected to the light housing (1) and has contact regions (9) formed on the limbs of a V. The electric lamp (31) has two lamp caps (40, 41), which have a cylindrically curved surface (42), which is pressed against the contact regions (9) by a second resilient holding member (8). The light source (36) of the lamp (31) is held in a predetermined position in the light housing (1).
    Type: Grant
    Filed: July 7, 1989
    Date of Patent: July 24, 1990
    Assignee: U.S. Philips Corporation
    Inventors: Johannes A. A. M. Van Heeswijk, Henricus M. C. Van Gestel
  • Optical unit for inscribing and/or scanning an information track without mechanical contact, and apparatus provided with the optical unit
    Patent number: 4911534
    Abstract: The optical unit comprises a frame (1), a subrame (3), and objective holder (5) having an objective (7) for concentrating the radiation beam so as to form a radiation spot. First connecting means (11) movably connect the objective holder to the subrame, which first connecting means allow focussing movements of the objective and counteract other movements. Second connecting means (9) movably connect the subframe to the frame, which second connecting means allow radial tracking movements of the objective and counteract other movements. Electrically controllable first focussing means (19), connected to the frame and electrically controllable second focussing means (21) connected to the objective holder cooperate with each other to produce the focussing movements.
    Type: Grant
    Filed: August 24, 1988
    Date of Patent: March 27, 1990
    Assignee: U.S. Philips Corporation
    Inventors: Cornelis M. Beyersbergen van Henegouwen, Henricus M. C. van Gestel, Petrus J. Blankers