Patents by Inventor Jean-Pierre Frehaut

Jean-Pierre Frehaut 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: 5505136
    Abstract: The invention relates to warheads including a core-generating charge and rotating about an axis which is not the charge axis. In front of the coating of the charge is positioned a wedge with a straight or curved triangular cross section, for slowing down said coating in a non-isotropic manner. The wedge is further destroyed during the formation of the core.
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: April 9, 1996
    Assignee: Thomson-Brandt Armements
    Inventors: Jean Cauchetier, Jean-Pierre Frehaut
  • Patent number: 5460422
    Abstract: In a system for the tilting of a suspended object, this object is suspended from a suspension point by three suspension lines, the suspension lines being each fixed to the object by a fastening point. A suspension point is deflected and tautened by a roller. The tilting of the object is then achieved by the translation of the roller with respect to the object. This shifting is obtained, for example, by a pyrotechnical thrustor fixed to the object. Application: sub-munitions suspended from a parachute.
    Type: Grant
    Filed: January 5, 1995
    Date of Patent: October 24, 1995
    Assignee: Thomson-Brandt Armements
    Inventors: Bernard Amiot, Gilles Doisneau, Jean-Pierre Frehaut, Serge Morin
  • Patent number: 5398613
    Abstract: In a system for the tilting of a suspended object, this object is suspended from a suspension point by three suspension lines, the suspension lines being each fixed to the object by a fastening point. A suspension point is deflected and tautened by a roller. The tilting of the object is then achieved by the translation of the roller with respect to the object. This shifting is obtained, for example, by a pyrotechnical thrustor fixed to the object. Application: sub-munitions suspended from a parachute.
    Type: Grant
    Filed: December 31, 1992
    Date of Patent: March 21, 1995
    Assignee: Thomson-Brandt Armements
    Inventors: Bernard Amiot, Gilles Doisneau, Jean-Pierre Frehaut, Serge Morin
  • Patent number: 5303631
    Abstract: The invention that relates to a pyrotechnic actuator in which the movement of the piston is damped. The actuator includes a body, a piston, a pyrotechnic material combustion chamber and a counter pressure chamber. The actuator also includes at least one intermediate compression chamber located between the combustion chamber and the end of the piston, with the intermediate compression chamber connected to the combustion chamber by a hole.
    Type: Grant
    Filed: December 23, 1992
    Date of Patent: April 19, 1994
    Assignee: Thomson-Brandt Armements
    Inventors: Jean-Pierre Frehaut, Daniel Wisshaupt
  • Patent number: 5299503
    Abstract: The invention relates to a shell, the base of which acts as the parachute can of a sub-munition. The shell contains sub-munitions stacked one behind the other and is closed at the rear by a base. The submunitions are each equipped with a parachute and a can containing the folded parachute, the separation of each sub-munition from its can permitting the deployment of the parachute. The can of the sub-munition situated at the rear of the shell is constituted by the base of the shell.
    Type: Grant
    Filed: November 9, 1992
    Date of Patent: April 5, 1994
    Assignee: Thomson-Brandt Armements
    Inventors: Jean-Pierre Frehaut, Pascal Laurend
  • Patent number: 5140909
    Abstract: A projectile with rear and front sections able to deliver payloads of submunitions contained inside the projectile after separation of the rear from the front section. The rear section is fitted with an assembly of thin blades. When both sections are assembled, the blades are partially in the rear section and partially in the front section, and when the two sections are separated, the blades spread out. The assembly is such that the length of blade that spreads out is greater than the length of blade that was in the front section before separation of the two section.
    Type: Grant
    Filed: July 16, 1991
    Date of Patent: August 25, 1992
    Assignee: Thomson-Brandt Armements
    Inventors: Jean-Pierre Pineau, Jean-Pierre Frehaut, Philippe Kerdraon
  • Patent number: 5054400
    Abstract: A projectile with rear and front sections able to deliver payloads of submunitions contained inside the projectile after separation of the rear from the front section. The rear section is fitted with an assembly of thin blades. When both sections are assembled, the blades are partially in the rear section and partially in the front section, and when the two sections are separated, the blades spread out. The assembly is such that the length of blade that spreads out is greater than the length of blade that was in the front section before separation of the two section.
    Type: Grant
    Filed: December 1, 1989
    Date of Patent: October 8, 1991
    Assignee: Thomson-Brandt & Armements
    Inventors: Jean-Pierre Pineau, Jean-Pierre Frehaut, Philippe Kerdraon
  • Patent number: 5016839
    Abstract: The disclosed device comprises, in the first element, on which the second element is mounted, a peripheral housing opened outwards, a circlip engaged in said housing, comprising teeth capable of getting engaged in retaining means of the second element, and a means to bring the ends of the circlip closer together in order to retract it and to bring out the teeth of the retaining means controlled by a delay means. The disclosed device is particularly suited to the locking and unlocking of sub-munitions parachute containers.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: May 21, 1991
    Assignee: Thomson-Brandt Armements
    Inventors: Jean-Pierre Frehaut, Jean-Pierre Pineau
  • Patent number: 5003882
    Abstract: For suspending a sub-munition from a plate carried beneath a parachute, an arm is hinged with the plate and the body of the munition, and a structure has two positions for which the sub-munition is respectively vertical or inclined. The structure also includes a system of guiding the tilting between the two positions. The center of gravity of the sub-munition moves downwards on a vertical line during tilting of the sub-munition to an inclined position. The device forming the subject of the invention enables the swinging caused by tilting the sub-munition into an inclined position to be avoided, and it is simple and economical to manufacture.
    Type: Grant
    Filed: January 9, 1990
    Date of Patent: April 2, 1991
    Assignee: Thomson-Brandt Armements
    Inventors: Jean-Pierre Frehaut, Jean-Pierre Pineau
  • Patent number: 4920887
    Abstract: Disclosed is a system for the holding of multiple warheads, placed in a missile rotating on its longitudinal axis and dropped in trajectory through an end of the missile. Each stage of the warhead includes at least two distinct parts which have to be separated laterally at the moment of dropping, the missile including a casing inside which the warhead is placed. For each stage, mechanisms to fix the parts at the said stage are arranged so that each stage forms a compact unit so as not to cause major radial stresses against the casing due to the centrifugal force created by the rotating missile. The fixing mechanisms are retractable at the moment when the parts are dropped, by means of inertia blocks that are subjected to the centrifugal force. The invention can be applied to sub-munitions and mortar shells.
    Type: Grant
    Filed: June 3, 1988
    Date of Patent: May 1, 1990
    Assignee: Thomson-Brandt Armements
    Inventors: Jean-Pierre Frehaut, Eric Magnaudet, Jean-Pierre Pineau