Patents by Inventor Jan Man in'T Veld

Jan Man in'T Veld 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 tubular lamp envelope
    Patent number: 3993465
    Abstract: The invention relates to a method of manufacturing a tubular lamp envelope for a fluorescent lamp in which a glass tube is softened by heating, bent around abending jig by means of bending members and then cooled until the material of the tube has solidified. During the solidification the tube assumes a horizontal position and the cooperation of the bending members with the tube is interrupted.
    Type: Grant
    Filed: April 28, 1975
    Date of Patent: November 23, 1976
    Assignee: U.S. Philips Corporation
    Inventors: Adrianus Antonius Hurx, Jan Man in T Veld, Peter Ivan Sygall
  • Method of manufacturing a tubular lamp envelope
    Patent number: 3958971
    Abstract: The invention relates to a method of manufacturing a torus-shaped lamp envalope in which a straight tube is softened by heating and is then bent in a vertical plane around a bending mould and is again cooled after which the cooperation of the still slightly soft tube with the bending mould is interrupted as soon as the tube is supported by a supporting member.The invention further relates to a fluorescent lamp having a lamp envelope thus shaped, as well as a device for carrying out the method.
    Type: Grant
    Filed: November 21, 1974
    Date of Patent: May 25, 1976
    Assignee: U.S. Philips Corporation
    Inventors: Jan Man in'T Veld, Adrianus Antonius Hurx