Patents by Inventor Cedric Leboisne

Cedric Leboisne 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: 6138548
    Abstract: The invention relates to a pneumatic booster operated by a plunger (9) housed in a bore (61) and carrying a moving seat (102) intended to interact selectively with a shut-off member (111), this member being itself capable of interacting selectively with a fixed seat (101).According to the invention, the plunger (9) comprises a cylindrical body (91) and a collar (92) sliding between a front stop (911) and a rear stop (912) of the body, an anterior section (921) of the collar (92) being engaged between the cylindrical body (91) and the bore (61), a posterior section (922) of the collar (92) carrying the moving seat (102), and it being possible furthermore for the collar (92) to be held temporarily stationary in the bore independently of the movement of the body (91), by means of a channel (14) and of a snap ring (13), in order to allow extended operation of the booster after a sharp braking action.
    Type: Grant
    Filed: April 5, 1999
    Date of Patent: October 31, 2000
    Assignee: Bosch Systemes de Freinage
    Inventors: Jean-Pierre Gautier, Cedric Leboisne, Jean-Pierre Michon, Ulysse Verbo
  • Patent number: 6119578
    Abstract: A pneumatic brake booster having a valve (7) actuated by movement of an operating rod (8) within a hub (6) from a position of rest to an extreme actuation position. In the position of rest, the valve (7) is closed to a pressure source (A) and when moved toward the extreme actuation opened to the pressure source (A). A purification filter (9) located between the pressure source (A) and valve (7) is made of a compressible material which has a minimum volume with the valve in the rest position and a maximum volume when the operating rod (8) reaches the extreme actuation position.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: September 19, 2000
    Assignee: Bosch Systemes de Freinage
    Inventor: Cedric Leboisne
  • Patent number: 6089119
    Abstract: A pedal arrangement for a motor vehicle having a bulkhead (10) which forms a barrier between an engine compartment (C) and a passenger compartment (H) for a driver and passengers. The pedal arrangement includes a transverse brace (32) which is rigid in bending, a mount (12) for a pedal (14) which is secured to the bulkhead (10) on the passenger compartment (H) side of the bulkhead (10) and at least one rigid force-transmission element (30). The pedal (14) has a lever (16) with a first end articulated to the pedal mount (12) and a second end with an operating shoe (18) attached thereto. The force-transmission element (30) has a first end (28) articulated to the transverse brace (32) and a second end (34) which extends between the pedal mount (12 and lever (16).
    Type: Grant
    Filed: April 1, 1998
    Date of Patent: July 18, 2000
    Assignee: Bosch Systemes de Freinage
    Inventors: Cedric Leboisne, Frederic Antherieu
  • Patent number: 6079208
    Abstract: A master cylinder having a main piston (12) located in a main bore (110) of a body (11) to define a working chamber (13), a reaction piston (3) located in a stepped bore (120) of the main piston (12) to define a reaction chamber (4) with components to providing a hydraulic reaction to a pneumatic booster. The main piston (12) slides in the main bore (110) in response to a boost force to develop an actuation force while the reaction piston (3) slides in the stepped bore (120) in response as a function of the actuation force. A first shut-off seat (41) is located on a front face of the reaction piston (3) is located in the reaction chamber (4) while a second shut-off seat (42) located in the reaction chamber (4) is mounted on a seat support (7) carried by the main piston (12). A first spring (51) urges the reaction piston (3) in a direction most likely to move the first shut-off seat (41) away from the second shut-off seat (42).
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: June 27, 2000
    Assignee: Bosch Systemes de Freinage
    Inventors: Ulysse Verbo, Cedric Leboisne, Jean-Marc Attard
  • Patent number: 6065290
    Abstract: A brake-control device having a vacuum booster (1), a master cylinder (2) and an electro-hydraulic module (3) for controlling brake pressure. The booster (1) has a front shell (10) and a rear shell (11) having a cylindro-frustroconcal shape with first (R10) and second (R11) outsider radii. The master cylinder (2) and module (3) being secured to the front shell (10) at least three fixing points (71, 72, 73). The fixing points defining a peripheral ring (100) on the front shell which is delimited by an inside radius (Ri) that is equal to half of the outside radius (R10) of the front shell (10).
    Type: Grant
    Filed: September 4, 1997
    Date of Patent: May 23, 2000
    Assignee: Bosch Systems de Freinage
    Inventors: Ulysse Verbo, Cedric Leboisne
  • Patent number: 6041601
    Abstract: A brake device having a master cylinder (1) connected to a pneumatic booster (2). The pneumatic booster (2) having a rigid casing (3) in which a partition (4) moves to delimit a front chamber (5) from a rear chamber (6). The casing (3) has a front shell (31) which is secured to the master cylinder (1) to form a first wall for the front chamber (5) and a rear shell (32) which forms a second wall for the rear chamber (32). In order to increase the absorption of kinetic energy in the event of an impact force being applied to the front shell (31), the front shell (31) has a peripheral member (311) secured to the rear shell (32) and a central member (312) secured to the master cylinder (1). The peripheral member (311) has a larger relative diameter (D1) than the diameter (D2) for the central member (312).
    Type: Grant
    Filed: December 16, 1997
    Date of Patent: March 28, 2000
    Assignee: Bosch Systemes de Freinage
    Inventors: Ulysse Verbo, Cedric Leboisne