Patents by Inventor Eric Petrimaux

Eric Petrimaux 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).

  • Patent number: 4492149
    Abstract: The invention relates to a pressure relay comprising inside its body, and besides a distributor device with a pressure inlet, an outlet and an exhaust, an auxiliary conduit of large cross-section which is connected with a control input of the said distributor device and comprises means to mount the said body on the jack, and to receive a pipe fitting supplying pressure to a jack.The invention finds an application for signalling the outermost positions of a jack piston, or in combination with branch-pipe type jacks.
    Type: Grant
    Filed: August 19, 1983
    Date of Patent: January 8, 1985
    Assignee: Legris
    Inventors: Daniel Bouteille, Eric Petrimaux, Jean-Luc Burban
  • Patent number: 4469128
    Abstract: A system is provided using a multiplicity of coupled modules (43) each module comprising a removable electro-magnetic valve (53) provided with terminals (73, 74) and a base (52) having coupling members (106, 107) which cooperate with the terminals, and connecting pieces (104, 123) for supplying the coil (55). This system is applicable in particular in industrial installations where electrical detectors control pneumatic apparatus.
    Type: Grant
    Filed: April 23, 1982
    Date of Patent: September 4, 1984
    Assignee: La Telemecanique Electrique
    Inventors: Eric Petrimaux, Pierre Prudhomme
  • Patent number: 4415004
    Abstract: A switch provides for cutting the pressure feed for distributors placed downstream of it, and for coupling the feed of these distributors to an exhaust of the switch itself, and has faces for connection with faces of the distributors, channels for circulation of exhaust fluid, members for connection with adjacent distributors, and is adapted for mounting on a conventional profiled element. The switch is particularly advantageous for ensuring the control of the feed of one or of several jacks coupled to distributors.
    Type: Grant
    Filed: December 1, 1980
    Date of Patent: November 15, 1983
    Assignee: La Telemecanique Electrique
    Inventors: Daniel Bouteille, Michel Nicholas, Eric Petrimaux, Pierre Prudhomme
  • 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
  • Patent number: 4364414
    Abstract: A locking device, for a pneumatic sequential control phase module, is constituted by an apparatus adapted to be placed between a base and a housing containing a bi-stable memory, and comprises a selector member receiving cancelling signals and auxiliary signals and the output of which is coupled to a locking input of an inhibitor element placed in series with the channel which transmits the control signals for placing the memory in logic state "1".
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: December 21, 1982
    Assignee: La Telemecanique Electrique
    Inventors: Daniel Bouteille, Hugues Marguet, Eric Petrimaux
  • Patent number: 4245673
    Abstract: A sequencing logic circuit comprises a blocking means for preventing phase jumps caused by the untimely presence of a release signal. An inhibitor device is placed on one of the channels feeding a storage relay, placed upstream of said release signal, in such a manner as to prevent the transmission thereto of a pressure for placing it in logic state "1." This inhibitor device is actuated by the release signal and does not permit any communication between the latter and the channel controlled.
    Type: Grant
    Filed: February 26, 1979
    Date of Patent: January 20, 1981
    Assignee: La Telemechanique Electrique
    Inventors: Daniel Bouteille, Michel Duclos, Hugues Marguet, Michel Nicolas, Eric Petrimaux
  • Patent number: 4194533
    Abstract: The invention provides a control circuit for a pneumatic shift register constituted by phase cells associated with an assembly of two threshold relays, each having a supply input and a control input which inhibits the output when the pressure that it receives is not lower than a pressure threshold which is low with respect to the control threshold of the memory contained in the cell.
    Type: Grant
    Filed: April 14, 1977
    Date of Patent: March 25, 1980
    Assignee: La Telemecanique Electrique
    Inventors: Daniel Bouteille, Andre Thomasse, Eric Petrimaux
  • Patent number: 4011883
    Abstract: An auxiliary manual control device for cells of a pneumatic system comprises an intermediary casing connecting each cell to a baseplate on which the said casing is normally secured. The casing is provided with piping for directly connecting the orifices of permanent pressure supply and input signals, and an OR gate with two inputs, whose output is connected to the output orifice of the baseplate, one of the inputs of the gate being directly connected to the output orifice of the cell, whereas the other input of the gate is connected by a monostable manual operated pneumatic reverser either to the exhaust, which represents its rest position, or to the pipe of permanent pressure supply.
    Type: Grant
    Filed: October 9, 1975
    Date of Patent: March 15, 1977
    Assignee: La Telemechanique Electrique
    Inventors: Eric Petrimaux, Felix Lameyre, Daniel Bouteille