Abstract: A piercing part for a medical infusion system includes a housing with a piercing mandrel, a fluid channel and a ventilation channel with a first channel portion extending at least substantially parallel to the fluid channel and with a second channel portion diverted towards an outside of the housing and to which an air filter element and a fluid shut-off member are assigned. A drip chamber can include a piercing part. The piercing part can be produced by an injection molding tool. The second channel portion in the housing is oriented parallel to the first channel portion and open towards an inside of the housing. An open region of the channel portion is closed by a separately produced closure part. The piercing part can be used with a medical infusion system.

Abstract: A piercing part for a medical infusion system includes a housing with a piercing mandrel, a fluid channel and a ventilation channel with a first channel portion extending at least substantially parallel to the fluid channel and with a second channel portion diverted towards an outside of the housing and to which an air filter element and a fluid shut-off member are assigned. A drip chamber can include a piercing part. The piercing part can be produced by an injection molding tool. The second channel portion in the housing is oriented parallel to the first channel portion and open towards an inside of the housing. An open region of the channel portion is closed by a separately produced closure part. The piercing part can be used with a medical infusion system.

Abstract: A filling device for a writing instrument has a reservoir positioned in a housing (for a refillable liquid. A wick-like section of a writing tip exposed on one end of the housing projects into this reservoir. A filling spout for the liquid is able to be attached to the other end of the housing. A movable dosing cap is provided on the filling spout in order to expose at least one filling opening for supplying the liquid before reaching an end position of the dosing cap.

Abstract: A writing instrument is ergonomically adjusted to the position of a user's hands. The writing device has a substantially tubular shaft along a main axis, a terminal part at the rear end of the shaft and a substantially conical tip at the front end of the shaft. Using the terminal part, the tip can be pivoted (inclined) in a controlled manner in relation to the shaft in a plane containing the main axis. Alternatively, an angle of inclination of a cone axis of the tip can be adjusted in relation to the main axis.

Abstract: The present invention relates to a filling device for a writing instrument having a reservoir (6, 6a) positioned in a housing (1; 8, 7) for a refillable liquid. A wick-like section of a writing tip (2) exposed on one end (7) of the housing (1) projects into this reservoir (6), a filling spout (4) for the liquid able to be attached to the other end (8) of the housing (1) and a movable dosing cap (5) being provided on the filling spout (4) in order to expose at least one filling opening (14, 14a, 11) for supplying the liquid before reaching an end position of the dosing cap.

Abstract: A housing of a writing instrument for holding an elongated refill has a front portion with a sleeve body made of an inelastic shape-retaining material, carrying a jacket made of an elastic second material, especially to function as a grip. The grip is formed on the sleeve body and extends along a substantial axial length. The grip is affixed by injection of the second material through an opening at a front of the sleeve body forming a starting end of an adjoining axially extending injection channel. One or more radially or laterally oriented apertures in the sleeve body connect to the injection channel and deliver the second material to the outer surface of the sleeve body.

Abstract: There is suggested a writing instrument having a shaft (9) and a push member (K,L;10) especially formed in one piece, which push member comprises a push portion (L), a body portion (K,50) and a switch rod portion (S) extending from the body portion in the axial direction and comprising a switch tooth (Z) protruding radially therefrom, which switch tooth (Z) is displaced within shaft (9) by at least one small segment (A,B) of shaft (9), being reshaped in the radial direction, upon actuation of the push member (10) in particular in the circumferential, tangential and/or radial directions; or which comprises two axially spaced apart stable positions corresponding to the writing position and the retracted position of the writing instrument, wherein switch tooth (Z), in both positions, assumes the same at least circumferential (tangential) position only axially displaced; or which is arranged on the switch rod portion in such a manner and has such a circumferential (tangential) extension (z6,z2) and shape that a c

Abstract: The invention relates to a front section (1) of a housing of a writing implement. Said front section comprises a casing body (4) consisting of a shape-retaining substance and a jacket (8) consisting of a second substance, which forms a flat surface surrounding the casing body along a substantial part of said body's axial length. An opening (7) positioned at the front of the tip of the casing body (4) forms the starting point of an adjoining axial segment (7, 10, k1) of an injection canal (38, 39, 10, 24, 25) for the second substance.

Abstract: A conical thread structure &agr;1, &agr;2, t is provided to simplify the removal of threads in plastics sleeve elements 1,2,3,4 and to decrease production cost. The radial distance of the thread elements 50,60,51,61 of said thread structure and of the corresponding form tools, which elements being adjacent in translational z or −z direction, are dimensioned such that, when removed E0,E1,E2 of F0,F1 from the mold each thread element “snaps out” only once and does not snap into a second time.

Abstract: A conical thread structure &agr;1,&agr;2,t is provided to simplify the removal of threads in plastics sleeve elements 1,2,3,4 and to decrease production cost. The radial distance of the thread elements 50,60,51,61 of said thread structure and of the corresponding form tools, which elements being adjacent in translational z or −z direction, are dimensioned such that, when removed E0,E1,E2 or F0,F1 from the mold each thread element “snaps out” only once and does not snap into a second time.