Abstract: The invention concerns a lock for doors or operationally similar structures, the lock mechanism being manually actuated with the aid of pneumatic means, without the need for external energy. Means for manually producing overpressure are rigidly connected to a door. Further means are provided for converting the overpressure into a mechanical movement of parts of the closure mechanism, such that there is no longer any force-locking connection between the door and a counterpart in the door frame whereby the door can be opened.

Abstract: A control device is proposed for employment in the transfer of control signals between a field bus (2) and at least one load (5). It comprises a control module (23), which possesses a bus communication unit (24) able to be connected with the field bus (2) and which is so able to be attached to a load (5) that a contact means (27) provided thereon is coupled with such load (5). On the control module (23) in addition to the contact means (27) at least one additional signal input (35) and/or signal output (33) is provided which is connected with the bus communication unit (24) for coupling up at least one further load (5') and/or sensor.

Abstract: A suction nozzle, comprises a suction nozzle tube having a first end for connection to a suction line and a second end forming a suction port, and at least one lateral opening in the suction nozzle tube in a zone of the suction port for a further flow extending in a direction tangential to the suction flow wherein the at least one lateral opening is formed by at least one bent wing raised from the suction-nozzle tube. The suction nozzle may be surrounded by outer guide walls forming a box in which a pressure nozzle is directed into the suction port. The pressure nozzle flow may be used to generate a shearing force flow superimposed upon a vortex flow generated within the suction nozzle.

Abstract: A roof for a built structure is proposed, which is designed in the form of a hollow body structure. It possesses interconnected walls (18 and 19) of flexible and at least substantially air-impermeable material. These walls (18 and 19) constitute elongated chambers (22), which are arranged side by side in sequence and are alternatingly designed as vacuum chambers (24) and gage pressure chambers (23). It is in this manner that an extremely strong, free span roof is created.

Abstract: With one or several pressure streams projected at an acute angle (.alpha.) in relation to the surface to be processed, shearing forces can be reached that are high enough to move solid particles and/or fluid media and thus make it easier to suck them away. The recognition of this fact is used in a delivery/suction nozzle arrangement together with the per se known Coanda effect. The invention may be used with all fluid media, preferably for cleaning practicable and passage surfaces; also for drying and/or degassing surfaces, as well as for industrial processes, in particular substance separation processes.

Abstract: A solenoid valve, whose valve member is acted upon by a feed pressure in a closed setting by the feed pressure obtaining in an inlet duct. In order to render possible rapid switching operations a moving ancillary drive member is provided which is acted upon by a control pressure and which acts through an outlet duct in the opening direction, and hence against the feed pressure, on the valve member.

Abstract: A device for automatically producing periodical impulse changes in a pressure line is provided with an elastic intermediate member impacted by a control pressure. Pressurizing the exterior of the intermediate member produces a pulsating flow of the fluid in the pressure line, obviating the use of control members, flaps, etc. In a preferred embodiment, the required control pressure is drawn from a bypass in the pressure line. The present invention may be put to Advantageous use in numerous fields in pneumatic and in process engineering.

Abstract: A functional component usable for demonstration and/or training purposes which is releasably secured to the mounting surface of a support base (1) and for this purpose it is provided with a securing device engageable with the support base (1). The securing device (8) is formed as a clamp (11) which is provided with a clamping component (15) projecting on the underside of the functional component (5) and which engages a mounting recess (93) in the support base (1). The clamp (11) includes an actuating element (22) that permits the clamping component (15) to be mounted manually and without any tool between a clamped position and a released position, whereby, in its clamped position, it is prestressed transversely (16) to the mounting recess (3) against the surface of the mounting recess (3) and, in its released position, operates with a lesser prestress against the recess surface or is removed therefrom.

Abstract: A piston for a fluid power cylinder, which possesses two separate piston parts, which are detachably set together in a joint region axially with a sealing action. Each piston part has a rigid carrying element, which is molded on a holding portion, which in its radially outer region has a lip seal comprising sealing material with rubber-elastic properties and serving for sealing on a piston running face. The respective lip seal and the holding portion associated with same are constituted by components of an integral elastic body comprising a sealing material with rubber-elastic properties. Such elastic body is molded on the respectively associated carrying element. The two elastic bodies are in sealing contact with one another in the joint zone.

Abstract: Functional component usable for demonstration and/or training purposes which can be releasably secured to the mounting face of a support base (1). It is provided with a clamping device (8) which is brought into engagement with a mounting recess (3) of support base (1), which is activated by rotating an actuating element (12). A downwardly extending clamping head (18) is mounted on the actuating element which is insertable into the mounting recess (3) and which can be positioned by rotating in such a manner that it engages behind two retaining protrusions in the mounting recess (3). By a further rotation of the actuating element, the functional element is clamped against the surface of the support base (1).

Abstract: A pressure gage device having a pressure gage with a double function. On the one hand it serves for conventional display of pressure and on the other hand it furthermore renders possible a variable setting of the displayed pressure.

Abstract: A device for detection of angular positions of a shaft adapted to be rotated about its longitudinal axis. An actuating member keyed on the shaft moves along an arcuate path during rotation of the shaft. At least one sensor is adjustably secured by means of a holding means on an arcuate guide of a sensor carrier so that it may be positioned along the path of movement of the actuating member. In order to render possible accurate resetting, on the sensor carrier teeth are provided on the sensor carrier following the curvature of the arcuate guide, such teeth being engaged by a setting gear wheel rotatably mounted on the holding means.

Abstract: A valve arrangement comprising several valve units placed in rows side by side in the a direction in a common row defining plane. Each valve unit comprises a base plate with supply and venting ducts extending therethrough and two mutually parallel spool receiving spaces each having a valve spool. The supply and venting ducts run in the partition, placed between the two spool receiving spaces, of the base plate and simultaneously communicate with the two spool receiving spaces. Such a valve arrangement may be manufactured with compact dimensions and have high flow through rates.

Abstract: A fluid power cylinder comprises a terminally arranged piston rod guide device through which a guide station of the piston rod with a prismatic cross section runs. Two diametrally opposite prism side edges of the guide section fit into circumferentially extending guide grooves in a plurality of guide rollers, the surface sections, which laterally adjoin prism side edges, of the guide section being supported by the flanks of the guide grooves.

Abstract: A compact drive cylinder with a cylinder barrel, an end cap and a guide cap is provided. In the cylinder barrel an axially sliding piston is arranged, on which a piston rod is mounted which extends through the guide cap. The piston divides a thrust chamber off in a fluid-tight manner chamber from a return chamber, the thrust chamber being connected with a thrust chamber port and the return chamber being connected with a return chamber port respectively in a fluid-tight fashion. Both the thrust chamber port and also the return chamber port are arranged in the end cap. An axially extending abutment rod having an abutment extends through the end cap and has its internal end extending through the piston into the return chamber so that an abutment for the piston is located in the return chamber.

Abstract: A support structure for architectural systems is suggested which comprises a plurality of supports (2) standing on a base and serving to bear a load. The supports (2) are constituted by air-tight hollow bodies (6) which possesses a wall of flexible material and are charged with compressed air in order to have a rigid form.

Abstract: A fluid operated rotary drive, which possesses a drive means having an output drive shaft able to be driven for oscillating motion. On one axial side of the drive means a position detection means is arranged, which possesses an actuating member connected with the output drive shaft and which on rotary motion of the output drive shaft performs an oscillating movement about a pivot axis. The actuating member cooperates with sensors, which may be set on holders. Each holder is arranged on its own setting ring, such setting rings being arranged coaxially in relation to each other with the holders extending away from the drive means. The setting rings are able to be turned in relation to one another and furthermore in relation to the housing for setting the positions to be detected and may be fixed in the settings made.

Abstract: An annular sealing unit for multiway valves. It comprises an integral housing ring, wherein an elastic sealing element is arranged. The housing ring possesses a cylindrical holding wall for attachment in a recess in the valve housing with a press fit. Furthermore it possesses two side walls projecting radially inward. The one side wall has an arcuate form and the other one is stepped. The stepped design means that there is a satisfactory engagement face for fitting the sealing unit. The arcuate shape of the first side wall prevents any skewing during pressing home during fitting in place. Furthermore a method for the manufacture of the sealing unit is provided, wherein the housing ring is manufactured by forming of the material without machining.

Abstract: A coupling device for linear drives for linking a drive part performing a linear movement in an axial direction with a guide part guided for longitudinal movement on a longitudinal guide parallel to the direction of movement. A force input part connected with the drive part and a force output put part connected with the guide part are provided, the force input part and the force output part being coupled together kinetically by means of an intermediately placed link member. As a link member and a elongated or longitudinal spring member is provided which is able to be bent in at least one transverse direction in a resiliently elastic manner and is non-yielding in its longitudinal direction, said spring member being aligned at least substantially in the axial direction. It is secured at a first connection point to the force input part and at a second connection point spaced from the first connection is connected with the force output part, in each case non-movably in the axial direction.

Abstract: A pressure control valve, which possesses a primary pressure port, a secondary pressure port and a venting port. For control of the secondary pressure a valve operating device is present which is actuated by a control pressure present in a control chamber. A mechanical spring device urges the valve operating device against the direction of action of the control pressure in such a manner that when ambient pressure obtains in the control chamber, it automatically assumes a basic setting, in which the secondary pressure port is connected with the venting port for fluid flow. It is in this manner that there is an automatic venting of the secondary pressure port when the control chamber is free of pressure.