Abstract: The invention relates to a method for producing an injection-molded part, the injection-molded part being a plastic cylinder for a needle-free syringe. The cylinder has an opening. The invention further relates to an injection-molding tool for producing the cylinder, the injection molded tool including an outer mold component and an inner mold component, which together define a clearance which determine the injection-molded part and the cylinder. The outer mold component and the inner mold component are designed such that the clearance is formed without an obstacle for plastic between the outer mold component and the inner mold component.

Abstract: A bellows arrangement comprises at least one bellows having at least one elastic primary fold structure composed of annular primary folds following each other coaxially in sequence. The annular primary folds each comprise at least one secondary fold structure composed of a plurality of secondary folds distributed along the annular periphery of the primary folds and extending athwart the peripheral direction so that the primary fold structure can be radially widened in the annular waist portions, located between two axially succeeding primary folds by unfolding the secondary folds.

Abstract: A fluid power linear drive has a drive housing (1) in which a housing chamber (4) is located containing at least one piston (5). The drive housing possesses two housing parts (2 and 3) placed alongside each other, which at mutually facing joint faces (16 and 17) are provided with half chambers (18a and 18b) constituted by elongated, groove-like recesses, which half chambers are united in a complementary fashion to form at least one housing chamber (4).

Abstract: A fluid power linear drive has a drive housing (1) in which a housing chamber (4) is located containing at least one piston (5). The drive housing possesses two housing parts (2 and 3) placed alongside each other, which at mutually facing joint faces (16 and 17) are provided with half chambers (18a and 18b) constituted by elongated, groove-like recesses, which half chambers are united in a complementary fashion to form at least one housing chamber (4).

Abstract: A fluid power operated fluid power cylinder having a cylinder housing (2) on whose rear side a control system housing (33) is mounted. The control system housing (33) contains a valve means and furthermore a electronic valve circuitry and/or electronic control circuitry as control components for the operation of the fluid power cylinder. Externally on the control system housing (33) electrical connection means (63) are provided for the supply of electrical control signals and fluid connection means (48) for the supply of the operating fluid.

Abstract: A fluid power operated fluid power cylinder having a cylinder housing (2) on whose rear side a control system housing (33) is mounted. The control system housing (33) contains a valve means and furthermore a electronic valve circuitry and/or electronic control circuitry as control components for the operation of the fluid power cylinder. Externally on the control system housing (33) electrical connection means (63) are provided for the supply of electrical control signals and fluid connection means (48 for the supply of the operating fluid.

Abstract: A ribbon and correction tape are separately mounted on a typewriter for movement in closely spaced parallel planes from a position below a line of impact along a line of print to an elevated position opposite said line of print. To minimize interference and malfunctions during relative movement of the ribbon and tape during elevating movement of one, the ribbon and tape are supported at an acute angle to one another, thereby to move in scissor fashion relative to the other.

Abstract: Function controlled raising and transporting mechanism for the selective control of a print ribbon or correction tape by means of a power drive and freewheeling clutches operative to effect print ribbon or correction tape transport incident to carriage motion in print direction only. In certain commanded functions such as spacing, tabulating, etc., both the print ribbon and correction tape transports are disabled by moving output elements of the freewheeling clutches to intermediate clutch disabled positions to thereby realize optimum utilization of the ribbon and tape capacities.

Abstract: A method and apparatus for indexing the print hammer of typewriters or the like having a carriage supported type matrix positionable in X-Y directions to present a selected character for printing wherein the matrix positioning motor is used to index the hammer in advance of matrix positioning movement.