Patents by Inventor Daniel Boutielle

Daniel Boutielle 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).

  • Pneumatic starter device
    Patent number: 4402254
    Abstract: A progressive pneumatic starter device delivers at its outlet an increasing pressure of low flow rate, then a working pressure at a high flow rate. The starter device is provided with a distributor member adapted to connect, in parallel with a calibrated bore, a channel of large section, when a pressure which is greater than a predetermined threshold and which is not derived from the outlet is applied to the distributor member. The starter device is advantageously placed upstream of a pneumatic switch to which it is directly associated for the purpose of shortening its channels for transfer of fluid.
    Type: Grant
    Filed: December 1, 1980
    Date of Patent: September 6, 1983
    Assignee: La Telemecanique Electrique
    Inventors: Eric Petrimaux, Michel Nicolas, Pierre Prudhomme, Daniel Boutielle