Patents by Inventor Francois Paschoud

Francois Paschoud 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).

  • Self-compensating spiral spring for a mechanical balance-spiral spring oscillator
    Patent number: 6705601
    Abstract: This self-compensating spiral spring for a mechanical balance-spiral spring oscillator for a watch or clock movement or other precision instrument, made of an Nb—Hf paramagnetic alloy possessing a thermal coefficient of Young's modulus (TCE), such that it enables the following expression to be substantially equal to zero: 1 E ⁢ ⅆ E ⅆ T + 3 ⁢ α s - 2 ⁢ α b where: E: Young's modulus of the spiral spring of the oscillator; 1 E ⁢ ⅆ E ⅆ T = T ⁢   ⁢ C ⁢   ⁢ E
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: March 16, 2004
    Assignee: Rolex S.A.
    Inventors: Jacques Baur, François Paschoud, Patrick Sol
  • Self-compensating spiral spring for a mechanical balance-spiral spring oscillator
    Publication number: 20020180130
    Abstract: This self-compensating spiral spring for a mechanical balance-spiral spring oscillator for a watch or clock movement or other precision instrument, made of an Nb-Hf paramagnetic alloy possessing a thermal coefficient of Young's modulus (TCE), such that it enables the following expression to be substantially equal to zero: 1 1 E ⁢ ⅆ E ⅆ T + 3 ⁢ α s - 2 ⁢ α b
    Type: Application
    Filed: May 6, 2002
    Publication date: December 5, 2002
    Inventors: Jacques Baur, Francois Paschoud, Patrick Sol