Patents Represented by Attorney, Agent or Law Firm Warren Comstock
  • Patent number: 7010913
    Abstract: A supply device for a braking system, comprising at least one reservoir (2) for supplying a master cylinder, and a rigid support (4) for the reservoir (2), characterized in that the reservoir (2) and the fastening support (4) comprise male (26) and female (28) elements collaborating with one another, and in that elastic sleeves (30) are inserted between the male elements (26) and the female elements (28).
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: March 14, 2006
    Assignee: Robert Bosch GmbH
    Inventors: Jean-Michel L'Aot, Philipppe Come, Remi Demersseman, Sylvain Lenczner
  • Patent number: 6959547
    Abstract: This master cylinder comprises a body (12) defining a primary pressure chamber (14) and a secondary pressure chamber (16), separated by an axially movable piston (22), the so-called secondary piston; means (28) for the hydraulic connection of the primary pressure chamber (14) with braking-force simulation means (30); and complementary moving and stationary means (32, 34) for the sealing of the hydraulic connection means (28). The moving and stationary sealing means (32, 34) are borne by the secondary piston (22) and the body (12) respectively. The secondary piston (22) is axially movable between a rest position, in which the complementary sealing means (32, 34) are spaced apart from each other, and a position in which said complementary sealing means (32, 34) are cooperating with each other.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: November 1, 2005
    Assignee: Robert Bosch GmbH
    Inventors: Nathalie Beccafico, Jean-Pierre Delage, Yannick Nen, St├ęphane Manfredini
  • Patent number: 6829825
    Abstract: A process for manufacturing a corner assembly for a vehicle. A wheel hub is partially machined to define a journal section and a radial mounting flange on an out-board surface of the hub. Bolts are pressed into axial openings in the mounting flange and the hub further machining to produce a concentric wheel pilot, rotor pilot and bearing journal surfaces that are perpendicular to radial faces on an out-board surface of the mounting flange. The hub is pressed into a bearing retained of a support member and a rotor is placed on the rotor pilot surface such that the bolts extend through openings located on the inner peripheral surface of the rotor. The hub is rotated to gage lateral deflection with respect to its axis. If the deflection is less than 0.06 mm, the wheel hub and rotor are accepted for installation on a vehicle and rejected if greater that 0.06 mm.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: December 14, 2004
    Assignee: Robert Bosch Corporation
    Inventors: James Darwin Bowman, Jeffery Adam Kalmbach, David Thomas Sadanowicz
  • Patent number: 6829976
    Abstract: A brake booster (10) having a housing defined by joining a substantially circular first shell (12) to a second shell (14) to compress a first bead (100,200) on a diaphragm (102,202) secured to a movable wall (76) and seal an interior thereof from the surrounding environment. The movable wall (76) includes a hub (44) with a disc (74) having an annular groove (70) located adjacent a peripheral surface (72) for receiving a second bead (104,204) on the diaphragm (102,202). The diaphragm (102,202) is characterized by a resulting cylindrical body (116,216) with a first section (215) that transitions from the first bead (100,200) and a second section (217) that transitions from the second bead (104,204). The first (100,200) and second (104,204) beads each have an initial oval shape that is stretched into a circular shape for respective retention between the first (12) and second (14) shells and annular groove (70) in sealing a front chamber (50) from a rear chamber (52).
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: December 14, 2004
    Assignee: Robert Bosch Corporation
    Inventor: Masato Wake
  • Patent number: 6817179
    Abstract: A master cylinder having first and second chambers respectively connected to a reservoir and to front and rear wheel brakes in a brake system. First and second center port compensation valves each have a head that is connected to a stem that joins a first retainer with a second retainer to cage a first spring of the first and second, resilient means. Each head is urged into engagement with a seat by a second spring to terminate communication from between the bore and reservoir on compression of the first spring in response to an input force being applied to the first piston to initiate a brake application. The head has a cylindrical body with an annular axial projection that extends therefrom to define a face and a resilient ring that surrounds the annular projection with a lip that axially extends beyond the face.
    Type: Grant
    Filed: September 18, 2002
    Date of Patent: November 16, 2004
    Assignee: Robert Bosch Corporation
    Inventors: Andrew Wasson, John Krummen, Kerry Springer
  • Patent number: 6804960
    Abstract: A fuse device for a pneumatic brake booster, characterized by a hollow cylindrical first part (21) with a first end (25) having an inside diameter (d1) and a bowl-shaped second part (24) with a circular bottom equipped on its central external part with a roughly cylindrical stud (29) of an outside diameter (d2) slightly greater, within the tolerances, than the inside diameter (d1) of the end of the hollow cylindrical first part (21). The outside diameter (d2), allowing the hollow cylindrical first part (21) to be secured to the bowl-shaped second part (24) by forcibly inserting the stud (29) into hollow end (25) of smaller diameter (d1). The bowl-shaped second part (24) having a circular external groove (30) whose purpose is to weaken the connection between the stud (29) and the bottom (26) of the bowl-shaped second part (24) when a pair of forces is applied to the fuse device to allow the hollow cylindrical first part to detach from the bowl-shaped second part.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: October 19, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Philippe Richard, Olivier Castello
  • Patent number: 6782977
    Abstract: An anchor having first and second rails to align first and second friction members with a rotor. The first and second friction members are moved into engagement with the rotor to effect a brake application. The anchor has projections that extend from the first and second rails and are aligned with the rotor. The thickness of a friction member is reduced by wear through the engagement with the rotor. Each friction member is attached to a carrier by a first inwardly projecting lip on a first end and a second inwardly projecting lip on a second end that has a length that corresponds to an initial thickness of a friction pad plus one-half the width of a projection. During a brake application the lips either engage projections on the first rail or projections on the second rail such that braking forces are communicated into the anchor without the introduction of a moment that could effect the uniform application of force from the friction member on the rotor.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: August 31, 2004
    Assignee: Robert Bosch Corporation
    Inventor: John Edmund Mackiewicz
  • Patent number: 6775978
    Abstract: A brake system having a master cylinder with a center port compensation valve wherein a head on a stem for caging a return spring moves within a poppet assembly as a direct function of the compression of the return spring during the development of pressurized fluid that is supplied to wheel brake to effect a brake application.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: August 17, 2004
    Assignee: Robert Bosch Corporation
    Inventor: Daniel John Vehe
  • Patent number: 6775980
    Abstract: Hydraulic master cylinder for a motor vehicle braking circuit, comprising means for concealing the dead travel of the primary (16) and secondary (44) pistons, these concealing means consisting of additional valve shutters (80) borne by the valve shutters (26, 56) that shut off the axial passages (22, 58) formed in the primary (16) and secondary (44) pistons, these additional valve shutters allowing the pressure in the primary (18) and secondary (52) chambers to increase right from the start of movement of said pistons over their dead travels.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: August 17, 2004
    Assignee: Robert Bosch GmbH
    Inventor: Pierre Lebret
  • Patent number: 6749044
    Abstract: A disk brake cylinder having a bore for retaining a piston (5) connected by an input shaft (11) to a parking brake mechanism. The input shaft (11) is rotated to provide linear translation of the piston through a ball ramp mechanism to effect a parking brake application. The ball-ramp mechanism includes a first groove (5) located on a face (11′) of the input shaft (11) and a second groove (15′) located on a face (13′) of the moving member (13). The first (15) and second (15′) grooves retain and trap a plurality of balls (14) and have escapement zones (16,16′) with a convex surface that extend from a bottom (26) of the groove (15).
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: June 15, 2004
    Assignee: Robert Bosch GmbH
    Inventor: Jean-Pierre Boisseau
  • Patent number: 6746088
    Abstract: A master cylinder for electro-hydraulic braking systems having a body of longitudinal axis pierced with a bore to receive a piston mounted to slide therein in a sealed fashion while axially dividing the bore into a supply chamber sealedly connected to a brake fluid reservoir and a working chamber. The piston is operated by an actuating rod connected to a brake pedal and connected to a cartridge to simulate a reaction of a braking circuit to the pedal. The working chamber in normal operation is in communication with the inside of the cartridge and in degraded operation in communication with at least one brake located at a wheel. The cartridge includes a piston that is subjected via of a first face to the pressurized brake fluid supplied by the working chamber and is subjected via of a second face to a variable-stiffness elastic of a elastic member. The elastic member comprises at least one helical spring and a spacer that is arranged between at least two turns of the spring.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: June 8, 2004
    Assignee: Robert Bosch GmbH
    Inventor: Anderson Chris
  • Patent number: 6742633
    Abstract: A linkage for connecting a brake cable to an actuator lever in a drum-in-hat park brake assembly. The linkage is defined by a continuous wire that is shaped into a base with parallel and adjacent first and second legs located in a first plane perpendicular to the base and parallel and adjacent third and fourth legs located in a second plane perpendicular to the base. The first and second legs each have a first section that extend a first distance from the base to a first loop and a second section that extend a second distance from the first loop to a second loop while the third and fourth legs extend a third distance from the base. The base has an opening defined by a complementary shape created between the first leg and the third leg and the second leg and the fourth leg.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: June 1, 2004
    Assignee: Robert Bosch Corporation
    Inventors: William Eugene Sherman, II, Kent Allen Woodiwiss
  • Patent number: 6739434
    Abstract: An linkage for connecting a brake cable to an lever in a drum-in-hat park brake assembly. The linkage is defined by a continuous wire that is shaped into a first engagement section that is separated from a second engagement section by a center section. The first engagement section is define by a loop that extends from the center section while the second engagement section is defined by a hook with an end that is spaced apart from the center section a distance that is greater than a radius of the hook such that a resilient force is required to move the end in a plane away from the center section and thereafter receive a loop on the brake cable through which an actuation force is transmitted to move a lever and effect a brake application.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: May 25, 2004
    Assignee: Robert Bosch Corporation
    Inventor: Kathryn Ann Pontius
  • Patent number: 6729449
    Abstract: A drum brake having a disc with a peripheral surface with a plurality of radial guides interspersed between a first radial abutment and a second radial abutment. The plurality of radial guides receive a first arcuate channel member on a first brake shoe and a second arcuate channel member on a second brake to align a first reaction surface on the first channel with the first radial abutment and a second reaction surface with the second radial abutment. An actuator provides a force to move the first reaction surface moves away from the first radial abutment and the second reaction surface from the second radial abutment to initiate a brake application.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: May 4, 2004
    Assignee: Robert Bosch Corporation
    Inventors: James E. Doolittle, William E. Sherman, II
  • Patent number: 6729450
    Abstract: A brake booster amplifies driver brake pedal input into an output force and travel for operating a master cylinder. A power unit builds and stores high pressure fluid to provide boost. Inlet and outlet solenoid valves regulate pressurized fluid to the amplifying mechanism. In one embodiment, a single boost chamber provides fluid pressure to operate the master cylinder and to provide a brake pressure indicative opposing force to driver input. One travel sensor monitors the position and movement of an input rod and piston, and a second travel sensor monitors the position and movement of an output piston. An ECU monitors system parameters and controls a motor pump, inlet and outlet valves and peripherals. In another embodiment, the opposing force to the brake pedal input is provided by a separate pressure fluid chamber located within and movable with the output piston. Boost chamber pressure and, optionally, output piston travel are monitored to provide a braking force indication.
    Type: Grant
    Filed: December 2, 2002
    Date of Patent: May 4, 2004
    Assignee: Robert Bosch Corporation
    Inventors: Timothy J. Albert, William J. Penninger, Richard B McClain
  • Patent number: 6725760
    Abstract: A brake booster (12) having a housing (18) with an interior separated into a front chamber (26) and a rear chamber (28) by a wall (30) retained on a peripheral surface (106) of a cylindrical body (34) of a hub (32). The cylindrical body (34) is characterized by having a radial flange (100) that extends from a first end (44), a ledge (102) located adjacent the radial flange (100), an annular shoulder (104) that extends from the peripheral surface (106) and a groove (108) located between the ledge (102) and shoulder (104). The groove (108) has a depth (d) adjacent the shoulder (104) that is approximately equal to the height (h) of the shoulder (104) above the peripheral surface (106) and a side wall (110) that transitions from the groove (108) into the ledge (102). The wall (30) is characterized by a metal disc (38) having an axial flange (202) that extends from a first end (204) into an annular slot (218) in a diaphragm (36) to define a lip (40).
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: April 27, 2004
    Assignee: Robert Bosch Corporation
    Inventors: Wayne A. Hewitt, Joseph M. Whicker
  • Patent number: 6718765
    Abstract: A braking device comprising a master cylinder (2), a primary piston (3), a manual control member (4), a booster (6) coupled to the manual control member (4) and an emergency assist valve (VA). The emergency assist valve comprising a reaction piston (17) through which there passes a ratio control (T) having a head (26a) situated in a chamber (35) lying between the reaction piston (17) and a bushing (36) located further forward in a bore (18) in the primary piston. The bushing (36) has a bore (37) in which there can slide a rapid piston (38), the rear end (45) of which forms, with the head (26a) of the ratio control, a valve (C). The valve (C) is capable of closing the inlet to a passage (39) in the rapid piston against the action of a spring (41). The braking device comprises a means (26, 27, 30) for preventing a sharp retreat of the reaction piston (17) when the manual control member (4) is released after slow braking.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: April 13, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Jean-Pierre Michon, St├ęphane Lacroix
  • Patent number: 6718634
    Abstract: A method of attaching a bearing (216) and hub (214) to a knuckle (212) in a corner assembly (220) of a vehicle to prevent the introduction of lateral moments into a plurality of rollers (232,234,232′,234′) retained in the bearing (216). The bearing (216) has an inner race (222) and an outer race (226) with the plurality of rollers (232,234,232′,234′) being retained between an outer race (226) and an inner race (222). The hub (214) has a cylindrical body with a flange (220) located adjacent a first end (219) and a mounting surface (224) located adjacent a second end (213). The flange (220) has a plurality of axial openings (250,250′ . . . 250n) that are spaced in an arc with respect to an axis of the cylindrical body. After the inner race (222) is located on the mounting surface (224), the inner race (222) is fixed to the cylindrical body. Thereafter, hub (214) is placed on a tool (242) such that a plurality of pins (248,248′ . . .
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: April 13, 2004
    Assignee: Robert Bosch Corporation
    Inventors: David Thomas Sadanowicz, Robert Edward Sierminski, Jeffery D. Pontius
  • Patent number: D489655
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: May 11, 2004
    Assignee: Robert Bosch Corporation
    Inventors: Christopher Byrd, Brock Nagy
  • Patent number: D490350
    Type: Grant
    Filed: May 13, 2003
    Date of Patent: May 25, 2004
    Assignee: Robert Bosch Corporation
    Inventors: Peter Blaschke, Lixin Zhang, Mingan Tan