Patents by Inventor Robert A. Marechal

Robert A. Marechal 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).

  • Device for interferential spectrometry with selective modulation
    Patent number: 4320973
    Abstract: A highly luminous device for interferential spectrometry, comprises a birefringent beam-splitting interferometer combined with an optical system supplying localized fringes. As the beam-splitter element, it has at least one birefringent prism mounted along the optical axis of the device and producing an angular splitting, such as a Wollaston prism, of materials suitable for the construction of such prisms and selected as a function of birefringence and transparent over a wide range of wave lengths. The beam-splitter is placed between a polarizer and an analyzer of variable orientation to obtain flux modulation.
    Type: Grant
    Filed: December 11, 1979
    Date of Patent: March 23, 1982
    Assignee: Agence Nationale de Valorisation de la Recherche (ANVAR)
    Inventors: Gerard Fortunato, Robert A. Marechal, Marc G. Y. Menetrier
  • Lock sensitivity adjustor
    Patent number: 4176810
    Abstract: A vehicle safety belt retractor is provided with means for varying sensitivity of the locking mechanism. Force applied via a return component to a mobile support associated with the locking mechanism varies blocking sensitivity in proportion to the length of belt protracted.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: December 4, 1979
    Assignee: Klippan France, S.A.
    Inventors: Jacques A. Bertrand, Robert A. Marechal