Abstract: A fastener structure having continuous interlocking flexible plastic profiles on opposing strips adapted to be releasably interlocked to each other, each strip having a pair of ribs and a pair of grooves wherein each rib and each groove of the pairs are of the same size and shape, a blocking boss extending continuously along the outermost of the ribs to engage a rib of the other strip when the strips are misaligned and the wrong rib is pressed into the wrong groove but allowing interlocking when both ribs and grooves are aligned.

Abstract: A brake booster in a housing, having a servo piston slidably supported in the housing and having a piston rod protruding into the housing for transmitting a brake force. A chamber is provided in the servo piston for receiving brake fluid drawn after the opening of a valve from a reservoir or supply container and pumped via a pump or the like. The chamber also communicates via a further valve or the like with a return line to the supply container. To improve the closing behavior of the valve, the first valve for the admission of the brake fluid is formed in the chamber, embodied as a servo chamber, by a valve bushing, or its annular collar, and a valve seat in a blind bore recess in the servo piston. On the other side, the valve bushing, with a bottom, engages the inside of a bell-shaped valve seat, which together with the piston rod, or a slide connected to the piston rod, forms the valve for returning the brake fluid.

Abstract: A brake system having a master brake cylinder with at least one brake chamber, for at least one brake circuit, and a brake booster. The brake booster communicates via a servo pressure line with a reservoir or a pump for supplying pressure fluid, and a pressure reduction valve is incorporated into the servo pressure line. This pressure reduction valve has a connection on the other end, via a pressure line, to at least the one brake circuit. The pressure reduction valve can assume three switching positions. In a first position at normal brake pressure, the servo pressure line is open between the brake booster and the reservoir and/or pump. If a predetermined pressure is exceeded, the servo pressure line is closed, in a second position. If a further threshold pressure value is also exceeded, then the servo pressure line is connected to a return line, so that the brake booster can be bled.

Abstract: An automatic drive slip regulating unit for motor vehicles or the like which communicates via a connecting line with at least one brake line between a master brake cylinder and an anti-skid system with wheel brakes connected downstream. The connecting line is intended to discharge into a cylindrical chamber of an additional master cylinder, and the cylindrical chamber is intended to be variable by a plunger that is subject to the pressure of a spring-supported spring reservoir plunger. To return this spring reservoir plunger to its terminal position, for instance in the event of leakage or upon termination of the drive slip regulation, the spring reservoir plunger is to be subjectable on its other side to a pressure medium which derives from a separate low-pressure hydraulic circuit.

Abstract: A hydraulic vehicle brake system having a brake booster integrated in a housing and having a master cylinder unit comprising at least two master cylinder pistons with corresponding pressure chambers for at least two separate brake circuits into which an anti-skid system is incorporated, and in which the brake booster and the anti-skid system communicate with a hydraulic energy supply system. The master cylinder pistons are to be disposed in the housing in an axially parallel location, radially opposite of and axially parallel with a restoring piston to be actuated by the anti-skid system. To this end, the master cylinder pistons are connected in the housing with a bushing that is axially displaceable by elements of the brake booster, and this bushing also acts upon the restoring piston.

Abstract: A brake pressure control valve including a housing, a control bushing secured therein, a control slide and a travel simulator movable relative to the control bushing and having a spring. The travel simulator has a pressure piece which is rounded on its side toward the control slide. Toward the pressure piece, the control slide is also rounded. Between the control slide and the pressure piece there is a force transmitting member having two plane parallel end faces. A centering means surrounding the force transmitting member and embodied like a rubber-elastic bushing centers the force transmitting member relative to the longitudinal axis of the control slide and orients the end faces transversely to said longitudinal axis. The control slide, the force transmitting member and the pressure piece form roller pairs, which during the actuation of the brake pressure control valve enable relative movements between the pressure piece and the control slide without generating notable radial force components.

Abstract: A ball joint that cannot be disassembled intended for use in a brake booster. The ball joint comprises a first, substantially rod-like component, which has a ball head; a second component, which has an insertion opening, which narrows in funnel-like fashion in the area of its beginning and is provided with an annular groove spaced apart from the beginning, a radially elastic securing ring, which is insertable into the insertion opening and lockable into place in the annular groove, as well as a sleeve, which has an annular groove for receiving the securing ring during the insertion into the insertion opening until it locks into place in the detent provided by the annular groove of the outer component. The sleeve surrounds the ball head in an articulated and undetachable manner.

Abstract: A pressure vessel having a housing subdivided by a flexible partition into an upper gas portion and a lower liquid portion. The gas portion of the housing forms a gas chamber surrounding by an upper wall formed of curved lines of various radius. An inlet to receive a pressure gas is formed in the upper wall so that the inlet is positioned in the area of the upper wall outlined with a curve of a minimal radius. After loading of the pressure vessel with a gas under relatively high pressure the inlet is sealed by a locking element. In the area where the inlet with the locking element is positioned, the deformations exerted on the wall under gas pressure are minimal.

Abstract: Method of and apparatus for producing plastic bags having separable plastic fasteners. A strip of bag making material is advanced step-by-step by bag width sections into a tear sealing station where the strip is retained for a dwell interval. In the station, the separable fastener means of the bag material is subjected to ultrasonic tear sealing as by means of a sonotrode along a bag edge defining line extending across the strip. Also in such station, the thinner bag body material is heat tear sealed along the bag side edge defining line as by means of a heat bar coordinated in operation with the ultrasonic sealing. The sonotrode has a profile comprising a tear line edge and material controlling and sealing rib means spaced from the tear line sealing edge.

Abstract: A pressure vessel includes a housing having an interior and a passage communicating with the interior and being bounded by an inner circumferential surface. A separate plug is received in the passage. The plug has an outer circumferential surface juxtaposed with the inner circumferential surface. These surfaces define together at least one gap of relatively small cross-section. The gap extends lengthwise of the passage communicating with the interior of the housing.

Abstract: A sealing arrangement for a two member couple, includes a sealing ring which is interposed between the two members of the couple and having a face which engages one of the members and two axially spaced edges. An elastically resilient ring is interposed between the other member of the couple and the sealing ring and exerting upon the same a biasing force which acts upon the sealing ring adjacent to one of the edges so as to press the face of the sealing ring into tight sealing engagement with the above-mentioned one member of the couple.

Abstract: A hang-up container made from thermoplastic synthetic material has a bag or sack body attached to a separable fastener comprising extruded pressure- slide- or push-fastener strips one of which has an upwardly extending reinforced carrying portion which may be provided with a reinforcing bead therealong at juncture with its closure portion and which has attached thereto an upwardly extending hook/handle. Bag type containers as thus described are especially adapted to be produced in an automatic production machine wherein body film material and the fastener strips are brought together and integrally welded, the prefabricated hook/handles are welded onto the carrying portions, the bags are successively separated along tear seals, and the separated bags carried away from the machine.