Abstract: A seat valve with electromagnetic actuation having switching noises during closure of the seat valve should be noticeably reduced independently of a temperature of a fluid in the seat valve, without considerably increasing the production costs of the seat valve. A sealing body of the seat valve is produced from a plastic which is selected from the group (PEEK, PEI, PASU and LCP), and the flow of force for fastening and for transmitting structure-borne sound from a sealing seat to a fastening surface has at least one transition from a metallic component to a component composed of plastic and a transition from the component composed of plastic to a fastening surface of some other metallic component. The seat valve may be used in hydraulic brake systems of vehicles, but also in gear mechanisms or hydraulic systems.

Abstract: A seat valve with electromagnetic actuation having switching noises during closure of the seat valve should be noticeably reduced independently of a temperature of a fluid in the seat valve, without considerably increasing the production costs of the seat valve. A sealing body of the seat valve is produced from a plastic which is selected from the group (PEEK, PEI, PASU and LCP), and the flow of force for fastening and for transmitting structure-borne sound from a sealing seat to a fastening surface has at least one transition from a metallic component to a component composed of plastic and a transition from the component composed of plastic to a fastening surface of some other metallic component. The seat valve may be used in hydraulic brake systems of vehicles, but also in gear mechanisms or hydraulic systems.

Abstract: The invention relates to an installation tool for the mounting of a carpet strip to serve as wall trim on an insertion-molding track. A short length of the carpet strip is first inserted by hand. The insertion toll is then placed on top of it. The insertion procedure is thereupon continued by simply sliding the installation tool.

Abstract: A patient supporting table comprises a table top detachably mounted on one side in a cantilevered fashion to an upper part of an height-adjustable pedestal. The upper part is connected to the upper member of a telescoping column by a pivotal connection which allows pivoting around a horizontal shaft which lies close to one edge of the column and preferably at the foot end of the table. This pivotal movement allows easy access to the interior of the pedestal for servicing purposes.

Abstract: The invention concerns a molding track for the installation of carpet molding trim. It possesses an asymmetrical two-lipped profile, one lip of which is fastened to the wall. The molding trim is fastened flush with the floor to the other lip, led upward around this lip, which is elastically prestressed in the direction of the wall, and clamped firmly. Electrical wiring can be installed subsequently in the hollow spaces provided for this purose. The profile can be manufactured of recycled material.

Abstract: A gas spring particularly for jumping stilts comprises a working cylinder and a plunger. In the working cylinder there is a working chamber containing a mass of gas. A gas exchange chamber is fixed with respect to the working cylinder. An exchange passage connects the working chamber and the gas exchange chamber. A gas exchange valve is provided in the exchange passage. An exchange operating handle is provided separate from the plunger.

Abstract: A piston for a pneumatic, hydraulic or hydropneumatic fluid-filled cylinder includes a constantly open throttled passage therethrough comprised by at least one spiral-shaped throttled channel extending in a plane perpendicular to the piston axis. The spiral configuration of the throttled channel permits the use of a relatively large flow cross section in the channel, thereby preventing clogging of the throttling passage by contaminants entrained in the damping medium, while still providing the desired damping effect.

Abstract: In the illustrative embodiments of the invention described, a gas spring useful as a height-adjustment and weight-compensation device, as, for example, in a height-adjustable table, includes structure that is responsive to the drop in gas pressure within the primary cylinder below a predetermined level to lock or brake the piston rod against abrupt movement with respect to the primary cylinder if a compressive load is thereafter applied to the gas spring. The pressure-responsive structure preferably includes a sealed auxiliary cylinder-piston unit carried by the piston rod internally of the gas spring. The auxiliary unit contains a separate pressurized body of gas, and either the auxiliary cylinder or piston is axially movable, in response to the greater internal pressure within the auxiliary unit when gas pressure within the primary cylinder drops too low, to engage the locking or braking device.

Abstract: In the illustrative embodiment of a current-carrying pneumatic spring disclosed, flow of electric current between external terminals on the cylinder member and piston rod member of the spring is provided by a contact element fixed on one of the members and carrying one or more contact faces which are resiliently biased into sliding engagement with an axially elongated face portion of the other member. Flow of electric current between the external terminals may thereby be provided over a range of positions or over all positions of axial movement of the piston rod member inward and outward of the cylinder cavity.