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Class 91/376R - One movable part unitary with working member


Subclass of Class 91 - Motors: expansible chamber type
Definition: Apparatus in which one of the movable valve parts is rigid
No. of patents: 586
Last issue date: 04/12/2011


1                      
NumberTitleIssue Date
7921763Braking control system comprising a force-control simulator
The invention relates to a brake control system for motor vehicles comprising a brake pedal (1), a brake booster (4), a brake master cylinder (5). The system of the invention further comprises a simulator (3) pneumatically coupled to the ...
04/12/2011
7856918Pneumatic brake booster comprising a force sensor
A pneumatic brake booster 1 comprising: a sealed structure 3 comprising a rigid casing 11 forming a funnel 19 furnished with an opening and a movable wall 13 dividing the sealed structure 3 into a low-pressure chamber 25
12/28/2010
7765913Pneumatic brake booster comprising a nonreturn valve for discharging an internal overpressure
This invention relates to a brake booster (201) having an axis (X), comprising an enclosure divided into a front chamber (210) and a rear chamber (208) by a skirt (209) fastened to a piston (205) mounted so that it can slide in the...
08/03/2010
7694623Tandem pneumatic brake booster
The invention relates to a tandem pneumatic brake booster (1) for a vehicle. The objective is to prevent a blocking of a booster thrust rod (4) in the maximum travel position. The blocking appears following a sealed adhesion of a first plate skirt (...
04/13/2010
7685926Negative pressure booster
In a negative pressure booster (1) of the present invention, at the time of performing a usual braking operation in a low deceleration region, a force attributed to the pressure difference between pressures applied to a variable pressure chamber and a constan...
03/30/2010
7677153Booster and brake control device fitted with this booster
A device including a master cylinder driven by a control member, an enclosure for a pneumatic booster having a rear chamber separated from a front chamber by a piston, first and second balancing valve elements place the rear chamber in communication with the front c...
03/16/2010
7370571Negative pressure type booster device
In a negative pressure type booster device, secondary passages 53 communicating directly with the atmosphere is formed between the internal surface of a sliding cylindrical portion 8b of a valve piston 8 and the external surface of a sile...
05/13/2008
7347510Braking force generator for a hydraulic vehicle braking system
In a brake force generator (10) for a vehicle hydraulic brake system having a force input element (14), which is connectable or connected to a brake pedal (P) and displaceable in a base housing of the brake force generator (10), a master cylinde...
03/25/2008
7334512Vacuum type booster device
In a vacuum type booster device, when the advance of an input member causes an atmosphere valve seat to be separated from an atmosphere valve to advance a power piston, the position of a vacuum valve seat is moved backward relative to the power piston by a distance ...
02/26/2008
7331275Brake booster with deformationally sealed passage and method of manufacture
A brake booster apparatus having a housing with oppositely disposed first and second walls. A first connector is disposed in the first wall and a second connector is disposed in the second wall. An elongate hollow member is deformationally engaged to each of the fir...
02/19/2008
7322269Housing module for a brake booster
The present device relates to a housing module 1 for a brake booster. The housing module has a housing shell 3 that accommodates a movable wall 4. The movable wall subdivides an interior space of the brake booster into a low-pressure chamber ...
01/29/2008
7318370Tie rod for booster and booster comprising such a tie rod
A tie rod (40) for mounting a booster and the brake control master cylinder on a bulkhead (3) of the vehicle engine compartment. The tie rod (4) comprises, at each of its ends, a shoulder (43, 44) defining a bearing surface having a frust...
01/15/2008
7302882Jump force vacuum booster
The invention provides a method and apparatus wherein the apparatus includes a housing having a first end and a second end. The housing also includes a first aperture and a second aperture. The first aperture is positioned to communicate with a first fluid source at...
12/04/2007
7267040Booster with reduced dead travel and a braking system comprising such a booster
A pneumatic brake booster with short actuating travel, comprising a skirt and a pneumatic piston that are rigidly connected and slideably mounted in a sealed casing to delimit a low-pressure chamber and a variable-pressure chamber and a three-way valve arrangement t...
09/11/2007
7255036Pneumatic servomotor comprising a diaphragm and/or a joint which is overmoulded onto the skirt
A pneumatic servomotor (12) for an assisted braking having a rigid axial casing (16) with a movable substantially truncated-cone shaped transverse skirt (18) that is integral with a piston (20) for the actuation of an associated master cy...
08/14/2007
7240602Brake control device
A device comprised a master cylinder driven by a control member (20), a pneumatic booster (14), a piston (22), first (VE1) and second (VE2) balancing valve elements, first (VA1) and second (VA2) intake valve elements,...
07/10/2007
7234384Pneumatic booster with shifted valve seats
A pneumatic brake booster (10) for a motor vehicle comprising a casing (12) within a moving partition (14) is secured to a moving piston (12) having an inlet valve (52) and a re-equalizing valve (50) with offset seats borne ...
06/26/2007
7216577Vacuum booster with low force loss
A vacuum booster includes a housing defining a control volume in which a movable diaphragm separates the control volume into an apply chamber and a vacuum chamber. A power piston extends through and engages the diaphragm and has an axial bore containing a valve asse...
05/15/2007
7213499Spacer for a boost unit
A spacer secured to a dash panel offsets a boost unit of a brake system into an engine compartment. The spacer has a cylindrical body with a u-shaped space through which air from the engine compartment is communicated to the boost unit to effect a brake application....
05/08/2007
7201456Pneumatic brake booster
A pneumatic brake booster for a motor vehicle, comprising a piston (22) mounted between a control rod (24) actuated by a brake pedal and a push rod (34) actuating a piston of a brake master cylinder. Structure for increasing brake boosting durin...
04/10/2007
7194946Pneumatic servomotor for power-assisted braking, the servomotor having a crimped diaphragm
A pneumatic servomotor (12) for power-assisted braking for a motor vehicle, which servomotor is of the type having a substantially cylindrical rigid casing (16) inside which a moving transverse partition (18) is movably mounted that has a periph...
03/27/2007
7194319Method and arrangement for controlling the position of an actuating element
The invention is directed to a method and an arrangement for controlling the position of an actuating element (1) which prevent damage to the actuating element by a collision with at least one stop (25, 30) and simultaneously ensure good dynamic charac...
03/20/2007
7159953Brake servo unit comprising a reaction disc device
This invention mainly relates to a reaction-disk device, to its manufacturing process and to a pneumatic servomotor for an assisted braking, including such reaction device. A reaction device according to the present invention comprises a receiving cavity, fit...
01/09/2007
7134377Vacuum brake booster
A vacuum brake booster having a vacuum chamber and a working chamber, which are separated from one another by a movable wall, and a control valve is described. The control valve has a control valve housing (10), which is coupled workingly to the movable wall ...
11/14/2006
7121186Pneumatic servo unit, method for making same and device
A pneumatic servomotor for an assisted braking including an emergency-braking assistance device to increase the assistance ratio when an input force is applied to the control rod that is higher than a predetermined value through an extrusion of the reaction disk. Th...
10/17/2006
7107769Master cylinder
A combined master cylinder and dump valve includes a piston slideable within a body bore that defines a master cylinder for pressurizing a brake port. The piston includes a piston seal for isolating a pressure port from a tank port, a piston bore, a first piston hol...
09/19/2006
7104179Braking device, and method of manufacture
A braking device and a method of manufacture of such a braking device. The braking device has a booster (1) formed of a cover (12) and of a cylinder (10). A central orifice (8) is formed on the cylinder. A master cylinder (5) has a...
09/12/2006
7096775Pneumatic booster
In a pneumatic booster, a front shell and a rear shell are connected by means of a rod. A stud bolt on one end of the rod extends through the front shell to the outside, and a support plate fitted around the stud bolt is engaged with the rod and abutted against an i...
08/29/2006
7089846Negative pressure type booster device
A negative pressure type booster device possesses a valve mechanism constructed to compensate for insufficient depressing force applied to a brake pedal upon emergency braking. Upon depression of the brake pedal, first negative pressure valves contact first negative...
08/15/2006
7086321Boosted brake having a feeler provided with a stud
A brake system having a master cylinder (14) actuated by a moving piston (24) that is fixed to a moving partition (18) in a booster (12). Piston (24) has a front face (26) that acts on a primary piston (30) of the mas...
08/08/2006
7086320Brake booster with emergency brake assist function
A brake booster, in particular for motor vehicles, having a control valve for controlling the boosting force generated by the brake booster. The control valve comprises a control valve housing, an input element, an output element and a thrust piece, which is dispose...
08/08/2006
7082870Arrangement for the bayonet-fixing and locking of a brake booster
An arrangement (10) for the fixing of an axially oriented (A) brake booster (12) on a dashboard (14) of an automobile wherein a rear face (16) of the booster (12) is fixed on a front face (18) of the dashboard (14) th...
08/01/2006
7082869Sensor arrangement for a vacuum brake booster and a vacuum brake booster provided with this sensor arrangement
The invention relates to a sensor arrangement (10) for a vacuum brake booster with a brake booster housing comprising at least one vacuum chamber and at least one working chamber that is separated from the latter by a moveable wall and is connectable either t...
08/01/2006
7080588Negative pressure type booster
A negative pressure type booster includes a power piston, a slide valve, and a holding mechanism, among others, and assists a driver during emergency braking. The holding mechanism is adapted to hold the slide valve at a predetermined frontward position, and include...
07/25/2006
7077051Self-boosting pneumatic booster using a pivoting key
A pneumatic booster operated by a plunger (9) housed in a bore (61) and bearing on a moving seat (102) which co-operates selectively with a shut-off member (111). The shut-off member (111) is capable of selective co-operating with ...
07/18/2006
7066073Vacuum brake booster for motor vehicles
In order to minimize the vacuum-dependent force component acting upon the valve body of a vacuum brake booster that is equipped with a pneumatically pressure-compensated control valve without requiring constructive modifications of the valve gear casing that accommo...
06/27/2006
7063002Negative pressure type booster
In a negative pressure type booster, an atmospheric valve seat is formed on an annular disk of an input member, which disk extends radially outward. The annular disk and an annular diaphragm located frontward of the annular disk and mounted to the input member defin...
06/20/2006
7063001Brake servo-unit comprising a floating element bearing offset valve seats
A pneumatic servomotor for power-assisted braking for a motor vehicle having a control rod (38) for opening and closing at least one axial inlet valve (52) that is interposed between a front chamber (16) connected to a pressure source having a p...
06/20/2006
7040717Negative pressure boosting device
In a negative pressure boosting device of the present invention, upon depression of a pedal at a normal speed, an input shaft 11 and a valve plunger 10 move forward to close a vacuum valve 15 and open an atmospheric valve 16 and a power p...
05/09/2006
7040217Tie rod for a brake booster
A first and second tie rods locating between a front shell and a rear shell of a brake booster through which a master cylinder is connected to a support member. Each of the first and second tie rods have a head that engages the rear shell and a first shaft that exte...
05/09/2006
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