Abstract: A pump assembly having a piston pump, which is driven by an eccentric element. To prevent leakage brake fluid from reaching an eccentric element chamber, a groove surrounds the pump piston in the pump housing and a seal and a porous metal sintered ring is inserted into the groove. A drain which extends obliquely downwardly from the groove drains leakage fluid from the sintered ring.

Abstract: A motor-and-pump unit having an electric motor in combination with a housing of the pump. The pump has at least one displaceable pump piston. To that end, on the side toward the pump housing and originating at one end wall, the electric motor has a bearing neck, which is tubular and into which the pump housing protrudes. This bearing neck fixes an outer ball bearing race of a ball bearing for a shaft of the electric motor. Protruding from the ball bearing is a shaft end that carries an eccentric element for moving the at least one pump piston. The eccentric element is disposed at an axial spacing from an inner ball bearing race that surrounds the shaft in stationary fashion. The eccentric element is brought directly up to the inner ball bearing race, and the inner ball bearing race and the eccentric element are embodied as a one-piece, multifunctional component.

Abstract: A piston pump, which is provided as a return feed pump for a slip-regulated motor vehicle brake system. In order to simplify the manufacture, a sleeve in the form of a tubular piece is clamped between a fastening element which is inserted into the cylinder bore using a self-clinching technique, and the cylinder bore, and is thus sealed and fixed in place. In addition to the simple manufacture of the sleeve out of reasonably priced tubular material, the piston pump has the advantage of a sealing of the sleeve in the cylinder bore without a separate sealing element such as a sealing ring.

Abstract: A manually operable flashlight unit (10) having a foot part (11) fitting a finder shoe (6) on a camera (1), standard contacts (9′) for chassis ground and (8′) for flash release being arranged in the foot part (11), has the additional feature that a single further contact (7′) is provided in the foot part (11) for a bidirectional information exchange between a circuit arrangement (13) contained in the flashlight unit (10) and a circuit arrangement (12) arranged in the camera (1).

Abstract: The invention relates to a piston pump with a piston received axially displaceably in a pump bore. To improve the aspiration performance of the piston pump. A cuff with a U-shaped annular cross section is provided, the cuff is inserted into the pump bore surrounding the piston, an outer lip forms a diaphragm, which rests against a wall of the pump bore and is acted upon on its outside with ambient pressure through a venting bore. The cuff is part of a fluid storage element, which makes an additional fluid volume available to the piston pump. The diaphragm acted upon by ambient pressure creates a pumping effect, if a fluid pressure in the fluid storage element drops below ambient pressure in an intake stroke of the piston.

Abstract: A brake system that includes a power-actuated service brake and an auxiliary brake that is actuated by muscle power. To achieve a desired characteristic curve of the pedal when the service brake is actuated, a path simulator is provided in a master cylinder. This path simulator has compression springs disposed in a pressure chamber. The pressure chamber is defined by a floating piston with a seat valve, which controls a pressure fluid-carrying connection of the pressure chamber to a pressure fluid reservoir of the master cylinder. The function of the seat valve is dependent on the stroke of a rod piston, which can displace pressure fluid from a first pressure chamber when the auxiliary brake is actuated. The path simulator is active if pressure fluid is not displaced from the first pressure chamber during the actuation of the service brake and therefore the seat valve assumes its open position.

Abstract: The invention is based on a reciprocating piston pump having two radial pistons disposed symmetrically to one another, which are drivable to a reciprocating motion by an eccentric disposed between them and are held in contact with the eccentric by a hoop spring that engages the pistons. For ease of installation, the invention proposes embodying the hoop spring as a bent wire part, with two open, hooklike eyelets on their ends, which ends are inserted into annular grooves of the pistons and enter into a snap connection with them in order to hold the pistons tightly against the eccentric.

Abstract: The present invention relates to an eccentric arrangement for a reciprocating piston pump, having a drive shaft drivable by a drive device, an eccentric part of a rubber-elastically deformable material is disposed on the drive shaft in a manner fixed against relative rotation. A bearing ring is provided on an outer circumferential surface of the eccentric part, by which ring a reciprocating piston is displaceable driven substantially perpendicular to the drive shaft. To avoid stroke losses, first and second support faces are provided on the drive shaft which the eccentric part disposed between them in such a way that the eccentric part rests with its axial ends on the first and second support faces.

Abstract: The invention relates to a damper for a slip-controlled brake system of a vehicle. An elastic damper body is disposed in a damper chamber cut as a bore into a hydraulic housing block of the vehicle brake system. The elastic damper body includes an encompassing sealing edge that partitions the damper chamber into a chamber that can be acted upon by fluid and a residual volume. During pressurization, this damper body is elastically compressed or expanded. The advantages of the damper of the invention are a simple design, good damping properties and its ability to avoid the formation of cracks in its damper body.

Abstract: An oscillation damper that has a cup-shaped elastomer diaphragm body, with a bottom diaphragm. The diaphragm body is received tightly on an opening side in a bore of a housing, and fits around a protrusion of a closure body that closes the bore. Between the closure body and the diaphragm, a support body having an end face that is concave toward the diaphragm is received in the diaphragm body. A void formed between the diaphragm and the support body communicates with the atmosphere, through a conduit embodied on the support body and through an opening in the closure body. The oscillation damper can be used in hydraulic slip-controlled motor vehicle brake systems.

Abstract: In an electric hand machine tool, particularly an angle grinding machine, for the purpose of ergonomic handling the handle, together with the switch bar, is designed to be rotatable, relative to the tool mounting on the gear head (11). For the rapid, problem-free changing of the position of the handle relative to the tool mounting, the handle (12) can be locked against rotation on the motor casing, containing the electric drive, in at least two turned positions by a manually operable locking device, and can be clamped on the motor casing by a manually operable clamp device. In a preferred embodiment the locking device (40) and clamp device are coupled together by constraint and are operated simultaneously by means of a single tightening lever.

Abstract: An objective for use in photographic compact cameras has a relative aperture of 3.5 and a focal length of 35 mm, and is of the triplet type. The lens element on the object side is a cemented element. In order to achieve an extremely compact structural shape and balanced monochromatic correction, as well as a reduction in the chromatic magnification difference, the color coma and the color astigmatism, four design conditions are specified.

Abstract: A pressure limiting valve has a valve closing member (ball), which is subjected to a hydraulic opening force and is indirectly subjected to a closing force generated by a compression spring which avoids hysteresis that impairs the switching behavior of the pressure limiting valve. A tappet, which passes through a sealing ring and is exposed to a control pressure, is also capable of acting in a closing manner upon the pressure limiting valve. When there is no operative control pressure, the tappet is pushed back by the opening of the pressure limiting valve and is retained in this position by frictional forces brought about by a sealing ring. The switching plays of the pressure limiting valve are free of frictional forces. The pressure limiting valve is suitable for use in hydraulic motor vehicle brake systems.

Abstract: A hydraulic system having a pressure generator which is protected against destructive overload. The hydraulic system has a pulsating feeding pressure generator, such as a piston pump, which feeds pressure fluid at high pressure into a damper chamber of a housing. A throttle body having a throttle bore is disposed on the outlet side of the damper chamber. For producing the protective effect, the damper chamber is preceded by a rupture disk communicating with the outlet. The throttle body suitably has a thin-walled portion, embodied as a rupture disk, in which the throttle bore is located. The embodiment described is advantageously usable in hydraulic systems in which pressure fluids are pulsatingly fed at high pressures.

Abstract: A pressure fluid reservoir is made from two housing components, that are brought together with an outer and inner thread arrangement with end stops formed by adjacent ends of the two housing components. The first housing component of the pressure fluid reservoir includes two segments and the second housing component includes two guide faces with an inner thread and an outer thread located between them. The guide faces are disposed with such a length and such a spacing with respect to one another that prior to the threads being screwed together during assembly, the threads are sealed off from the reservoir chambers and two stop faces facing one another on the housing components come into contact on their ends once the screwing operation is completed. The ends are exposed to the outside so that the contact between the ends can be seen from the outside.

Abstract: A scanning grating for a focusing detector and a focusing detector are described. The scanning grating serves as an image scanner and spatial frequency filter and includes at least two surface elements splitting up an incident luminous flux into two spatially separate light fluxes and by means of which, in conjunction with a field lens, two images of the exit pupil, or parts thereof, of an associated optical system are generated in a plane in which at least two photo-receiver systems are mounted. Means acting optically as complementary plane-parallel plates are provided to split up the luminous flux from the optical system into two spatially separate light fluxes.

Abstract: In a container for a plurality of disk-shaped articles, the partly opened base portion possessing receiving grooves consists of two substantially identical parts which can be assembled, and two further, substantially identical cover parts which at least partially close the openings, and means are provided for disengageably locking the parts of the base portion to the cover parts. Interlocking stacking means are used for stacking a plurality of the base parts, with or without cover parts. The container of the parts of the base portion are useful for any transportation and archiving purposes during production of the articles or by their end users.

Abstract: A method and a circuit arrangement for photographic cameras for automatic determination of the exposure value by means of electrical signals obtained from integrated and selective brightness measurements of the object to be exposed. A difference value is formed, for the exposure control, in a manner which is known per se, from the comparison of an electrical signal value derived from the selective metering with an electrical signal value generated from the integrated metering. A correction value is determined from the comparison of the difference value with a threshold value. The correction value is set off against the electrical signal value generated from the integrated metering, and the value resulting from the setoff is used for exposure control of the camera.