Abstract: A pneumatic brake booster for a hydraulic motor-vehicle brake system, including a booster housing, having a front and a rear housing shell, and at least one connecting pin, which is arranged in the booster housing such that the at least one connecting pin extends axially parallel to the center axis and which supports the booster housing from the inside by two supporting formations and which protrudes through the booster housing from the inside to the outside on at least one side by an end segment. In order to ensure simple intermediate handling of the brake booster before and during the assembly of the brake system and to improve the durability and corrosion resistance, the housing shells are arranged in such a way that the housing shells are each connected to the connecting pin such that the housing shells are secured against being axially moved apart from each other.

Abstract: A vacuum-operated brake booster includes a housing which consists of a bottom and a cover having an intermediate piston through which tubes, through which attachment screws are to pass, extend. The front end of the tube is threaded, and a peripheral groove is provided behind the thread, a flange being crimped in the groove behind the cover in the housing. The master cylinder is attached via the lugs thereof, which are fitted into the front end of the tube against the front surface of the cover and locked by the nut screwed onto the thread. The front end of the tube has a peripheral groove receiving the flange that consists of a ring and a sleeve, the lip of which penetrates into the groove by crimping. A gasket completes the seal.

Abstract: A fluid pressure cylinder includes a displacement member, which is displaceable on an end side of a body, and a connecting body, which is connected to a piston rod of a cylinder unit, is inserted via a spring in a block body of the displacement member. A suction rod is connected substantially in parallel with the connecting body and a buffer rod connected to the connecting body. In addition, in a state where downward displacement of the block body is restricted, when additional loads are applied, the buffer rod is displaced relatively with respect to the block body in opposition to an elastic force of the spring, whereby an interval in a radial direction between a bushing and the buffer rod is enlarged.

Abstract: The invention relates to a vacuum-assisted brake-force booster for a motor-vehicle braking system with: a force-input member which is capable of being coupled with a brake pedal, a control-valve device which is capable of being actuated in accordance with a displacement of the force-input member, a tandem chamber arrangement with a first and a second working chamber and with a first and a second vacuum chamber and with a force-output member for delivering an actuating force to a master-brake-cylinder arrangement, wherein the first working chamber and the first vacuum chamber are separated from one another via a first movable wall, and the second working chamber and the second vacuum chamber are separated from one another via a second movable wall and in each instance are optionally capable of being connected to one another via the control-valve device and wherein at least one pneumatic connecting element is provided, via which the first working chamber is permanently connected to the second working chamb

Abstract: Disclosed is a booster assembly for vehicles capable of reducing assembly time of a vehicle. The booster assembly includes a booster including a casing having a front shell and a rear shell sealingly coupled to each other and a hollow tube mounted through the casing, a master cylinder including a flange part coupled to the casing, and a mounting bolt inserted through the flange part and the tube in the casing to fix the booster and the master cylinder to a panel of a vehicle body. The tube has a clip slot formed by cutting a circumferential surface of an end portion thereof. The clip slot is coupled with a clip to firmly secure the mounting bolt to the tube.

Abstract: The present invention relates to a brake booster device for a vehicle brake system comprising a force input element, a control valve arrangement actuable via the force input element, a chamber arrangement disposed in a housing and comprising a vacuum chamber and a working chamber, which is separated from the vacuum chamber by a movable wall and connectable selectively to a vacuum source or the atmosphere, and a force output element, wherein the movable wall is biased into a normal position by a resetting spring accommodated at least partially in the housing and wherein the housing is penetrated by at least one fastening bolt. In this case, it is provided that at least one damping element acts for the purpose of vibration damping on the resetting spring, wherein the at least one damping element is mounted on the at least one fastening bolt.

Abstract: The invention relates to a piston machine (10, 40) which comprises at least a cylinder (12a, 12b) and a cylinder head (18a, 18b) closing an opening of the cylinder (12a, 12b). Further, the piston machine (10, 40) has a piston (22a, 22b) arranged, at least in part, within the cylinder (12a, 12b) and arranged movably in its longitudinal direction with the aid of a connecting rod (28a, 28b). The piston (22a, 22b) has an opening extending in its longitudinal direction, within which at least a partial area of a guiding element (30a, 30b) firmly connected to the cylinder head (18a, 18b) is arranged.

Abstract: Pneumatic brake booster (10) for a motor vehicle, comprising a moving internal partition (14) provided with a cup (38) covered by a sealing diaphragm (42) connected to the inner periphery of the casing (12), of the type in which the booster (10) is intended to be fastened to a bulkhead (34) of an associated vehicle by means of tie rods (24) of axial orientation passing through the casing (12) of the booster (10) and through the moving partition (14), and of the type in which the cup (38) has an aperture (46) associated with each tie rod (24) that accommodates a sealing ring (48) which is, on the one hand, fastened to the cup (38) and which is, on the other hand, slideably mounted on the associated tie rod (24), characterized in that the cup (38) comprises a tubular element (50) which contains the aperture and which extends at least axially in part around the sealing ring (48).

Abstract: 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 first and second connectors. The various embodiments of the invention include embodiments wherein the hollow member is deformed to engage the hollow member and connectors and embodiments wherein the first and second connectors are deformed to engage the hollow member and connectors. The deformational engagement mechanically attaches and sealingly engages the hollow member with each of the first and second connectors. The hollow member defines a passage through the apparatus from the first wall to the second wall of the housing. A method of manufacturing a brake booster is also disclosed.

Abstract: A lifting platform for motor vehicles has at least one extendable lifting column that is formed by a tubular jacket and a lifting cylinder unit arranged at least partially therein. The upper end of the lifting cylinder unit supports a load receptacle. The tubular jacket and the lifting cylinder unit are air-tightly connected to one another and form a compressed air storage chamber between the inner wall of the tubular jacket and the outer wall of the lifting cylinder unit. The compressed air storage chamber is provided with a compressed air supply connector and, in the upper end area, with a compressed air outlet connector. The lifting device is preferably an underfloor lifting platform with hydraulic cylinders. A check valve is arranged in the filling direction upstream of the compressed air supply connector.

Abstract: 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 inner surface of the front shell. A seal member is provided in an annular groove formed in the support plate. A projection is formed in the support plate. When the support plate is reversely mounted on the stud bolt, the projection is abutted against the front shell, and the seal member is unable to provide a seal between the stud bolt and the front shell. In a leak inspection, air is flowed into a constant-pressure chamber through a cut portion formed in a distal end of the projection, to thereby detect reverse mounting of the support plate.

Abstract: A brake booster assembly is temporarily mounted on a vehicle dash panel by use of a clip. The brake booster assembly includes a housing and at least one mounting bolt extending outwardly from an outer wall of the housing. The mounting bolt extends through an aperture of the vehicle panel to mount the brake booster to the vehicle panel. The clip is fastened to the mounting bolt. The clip has a securing structure for engaging with a wall of the vehicle panel to at least temporarily mount the brake booster to the vehicle panel.

Abstract: An apparatus and method are provided for adjusting the axial distance between the front and rear walls of a vacuum booster, from outside of the booster, after the booster has been assembled. The booster includes a housing having a front housing and a rear housing joined together and defining a longitudinal axis of the booster. The front housing defines a front wall of the housing and an inner surface of the front wall. The rear housing defines a rear wall of the housing and includes a captive nut having threads adapted for threaded engagement with a threaded end of a tie rod. The front and rear walls are spaced an axial distance from one another along the longitudinal axis. A tie rod extends axially through the housing and has a first end engaging the rear wall of the housing and a second end engaging the front wall of the housing. The first end of the tie rod has threads for engaging the threads of the captive nut in the rear wall of the housing.

Abstract: A tandem vacuum booster includes a rear housing mounted to the vehicle, and a front housing mounted to the rear housing to define an interior chamber. A divider, disposed between the housings, partitions the interior chamber into primary and secondary chambers. A primary diaphragm, disposed between the rear housing and the divider, partitions the primary chamber into a primary high pressure chamber and a vacuum chamber. A secondary diaphragm, disposed between the divider and the front housing, partitions the secondary chamber into a secondary high pressure chamber and a vacuum chamber. A tie rod extends between the housings and through the chambers. A sleeve is disposed about the tie rod and extends between the high pressure chambers and is spaced from the tie rod. This sleeve defines a passage between the tie rod and itself such that air can be transferred between the high pressure chambers.

Abstract: An apparatus and method are provided for adjusting the axial distance between the front and rear walls of a vacuum booster, from outside of the booster, after the booster has been assembled. The booster includes a housing having a front housing and a rear housing joined together and defining a longitudinal axis of the booster. The front housing defines a front wall of the housing and an inner surface of the front wall. The rear housing defines a rear wall of the housing and includes a captive nut having threads adapted for threaded engagement with a threaded end of a tie rod. The front and rear walls are spaced an axial distance from one another along the longitudinal axis. A tie rod extends axially through the housing and has a first end engaging the rear wall of the housing and a second end engaging the front wall of the housing. The first end of the tie rod has threads for engaging the threads of the captive nut in the rear wall of the housing.

Abstract: The present invention relates to a pneumatic brake force booster with means for fastening the said to a vehicle wall which extend through the interior of the brake force booster, wherein a fixed stop for a first housing part is provided on a first end and a stop that is adjustable by means of a rotation for a second housing part is provided on a second end, and with means for the pneumatic sealing of housing openings for the fastening means. The gist of the present invention resides in that the fastening means has a smooth sealing portion adjacent to the adjustment area of the adjustable stop, and in that the sealing means, by multilateral abutment on a conical abutment surface of the adjustable stop, on the smooth sealing portion and the associated housing portion, closes a slot between the fastening means and the adjustable stop and a slot between the stop and the housing part. This achieves a simple and low-cost sealing of housing openings for the fastening means.

Abstract: A power booster comprises a housing, a tube, and a seal. The housing includes a front housing section, a rear housing section, and a divider. The tube is mechanically fastened proximate the rear housing section and generally stationary relative to the rear housing section, with the seal between the divider and the tube.

Abstract: A power booster comprises a housing, a tube, and a seal. The housing includes a front housing section, a rear housing section, and a divider. The tube is mechanically fastened proximate the rear housing section and generally stationary relative to the rear housing section, with the seal between the divider and the tube.

Abstract: The present invention relates to a system and a process for assembling a tube in a connecting element, and a housing for a braking assistance servomotor, in a device for controlling braking including such a system. The system for assembling a tube (10) with a female connecting element (11) comprising a longitudinal bore (14) provided with a transversal shoulder (14a), system in which a hollow end portion (18) of the tube is inserted in the said bore in abutment against its shoulder, is characterized by the fact that the longitudinal wall of the said end portion comprises a zone (23) deformed by compression between the said shoulder and the remainder of the tube and deformed transversally within the internal wall of the bore to provide mechanical connection and tightness between the tube and the connecting element.

Abstract: A connecting member and method of attaching the connecting member and a tube member to a housing of a vacuum brake booster is provided. The connecting member includes a cylindrical body portion having a first end and a second end. A rim portion is formed between the first end and the second end, and a stem portion is formed at the second end of the cylindrical body portion. The stem portion includes a tapered end portion to allow the stem portion to flow radially outward when a force is applied to the stem portion. The cylindrical body portion further includes a first opening formed in the cylindrical body portion adjacent to the first end of the cylindrical body portion and a second opening in communication with the first opening. The first opening has a first diameter and the second opening has a second diameter. The second diameter is less than the first diameter. The stem portion is deformed to create a seal between a portion of a housing member and the connecting member.

Abstract: A connecting member and method of attaching the connecting member and a tube member to a housing of a vacuum brake booster is provided. The connecting member includes a cylindrical body portion having a first end and a second end. A rim portion is formed between the first end and the second end, and a stem portion is formed at the second end of the cylindrical body portion. The stem portion includes a tapered end portion to allow the stem portion to flow radially outward when a force is applied to the stem portion. The cylindrical body portion further includes a first opening formed in the cylindrical body portion adjacent to the first end of the cylindrical body portion and a second opening in communication with the first opening. The first opening has a first diameter and the second opening has a second diameter. The second diameter is less than the first diameter. The stem portion is deformed to create a seal between a portion of a housing member and the connecting member.

Abstract: The present invention relates to a system and a process for assembling a tube in a connecting element, and a housing for a braking assistance servomotor, in a device for controlling braking including such a system. The system for assembling a tube (10) with a female connecting element (11) comprising a longitudinal bore (14) provided with a transversal shoulder (14a), system in which a hollow end portion (18) of the tube is inserted in the said bore in abutment against its shoulder, is characterized by the fact that the longitudinal wall of the said end portion comprises a zone (23) deformed by compression between the said shoulder and the remainder of the tube and deformed transversally within the internal wall of the bore to provide mechanical connection and tightness between the tube and the connecting element.

Abstract: A braking device having a flange (21) of master cylinder (2) secured to a pneumatic booster (1) by a nut (3) screwed onto a through-bolt (13) that extends through a front shell (111) and a rear shell (112). The through-bolt (13) has a threaded front end (131) and a shoulder (132) for holding a front wall (111) in alignment with the master cylinder (2). The nut (3) has a barrel engaged in a hole (211) in the flange (21) and is screwed onto the front end (131). A collar (32) on the nut (3) acts on the flange (21) to press the flange (21) against the front shell (111). The barrel (31) of the nut and shoulder (132) of the through-bolt (13) have first and second respective sections (S1, S2) which face each which engage the front shell (111) with the first section (S1) being larger than the second section (S2) such that the front shell (111) crumples on receipt of a impact force.

Abstract: A brake booster having a front shell joined to a rear shell with the interior separated by a wall to at least define a first front chamber and a first rear chamber. A reinforcement plate located adjacent an end face of the front shell has a plurality of studs for attaching a master cylinder to the front shell. First and second tubes which extend through the wall each have having a first end sealed with respect to the front shell and a second end sealed with respect to the rear shell. A fastener arrangement extends through the first and second tubes for attaching the brake booster to a wall of a vehicle. The fastener arrangement is characterized by first bushing members located between the front shell and reinforcing plate and a second bushing members secured to the rear shell. The first bushing members each including a first cylindrical body which have a stepped bore defined by a first diameter separated from a second diameter by a first shoulder.

Abstract: A braking device having a pneumatic booster (2) having a rigid casing (3) defined by a front shell (31) and a rear shell (32). The interior of the rigid casing (3) being separated into a front chanber (33) and a rear chamber (34) by a movable partition (5). The booster (2) is reinforced by a strut (4) with a screw (40) which passes through the front shell (31), movable partition (5) and rear shell (32). The screw (40) has front end (41) and a rear end (42) separated from an intermediate cylindrical section (43). A sleeve (7) which extends from the rear shell (32) receives the second end (42) of the screw (40) and allows the screw (40) to axially slide with respect to the rear shell (32). A stop (61) on the intermediate section (43) prevents the second end (42) from projecting from the rear shell (32) until the first end (41) is rotated into engages the front shell (31) and threads on the second end engage corresponding threads on a support (1) to fix the booster (2) to the support (1).