A main body portion is disposed at a regular position by inserting a protrusion into an engaging portion formed in a leg portion of the main body portion in accordance with a forward movement of a sliding mold including the protrusion. Then, an injection molding mold is completely closed to cause at least a part of a mold surface of the sliding mold to come into contact with the main body portion.

A method of making a two-component piston, the two-component piston including a piston cover as the first component and a piston body as the second component. The piston cover is arranged adjacent to the piston body and is configured to be moved relative to the piston body.

A drain valve for a compressed air brake system of a vehicle comprises a valve housing defining a valve chamber open at one end and a drain aperture at the opposite end. A poppet has a poppet body at least partially received in the valve chamber and provided with a seal. The poppet is slidable between a closed position in which the poppet and the seal contact the inner wall of the valve housing around the drain aperture thereby closing the drain aperture, and an open position moved away from the drain aperture. A spring urges the poppet to the closed position. The poppet and the seal are incorporated in a single multi-component injection molded plastic part comprising at least two components. The poppet body is formed of a first plastic component and the seal is formed of a second plastic component partially embedded in the first plastic component.

[Problem to be solved] A sample storage tube having the seal function to the tube body is provided by integral molding and the airtightness is secured in the sample storage tube.

[Solution] The sample storage tube 100 comprise a first molded portion 210 and a second molded portion 220 by the integral molding. The first molded portion 210 is molded as the base figure of the tube body. The second molded portion 220 includes at least the opening edge portion which contacts the lid 300 and closes the opening. The first molded portion 210 is molded by the first material such as polypropylene, the second molded portion 220 is molded by the second material such as TPE which is suitable for the seal object to secure the airtightness between the opening and the lid 300. This second molded portion providing the seal function is molded onto the opening edge of the tube body by the integral molding. The second molded portion 220 can be molded as a consecutive object from the bottom portion to the opening edge of the tube body.

A breathing mask includes a relatively rigid shell and an elastomeric sealing lip mounted to the relatively rigid shell. The elastomeric sealing lip has a contact zone configured to bear against the face of the person. The elastomeric sealing lip further includes a nose bridge region, a first nostril region and a second nostril region. The nose bridge region has a first zone of lower load-bearing capability. The first nostril region has a first zone of higher load-bearing capability. The second nostril region has a second zone of higher load-bearing capability. The first zone of lower load-bearing capability has a lower load-bearing capability than the first and second zones of higher load-bearing capability. In addition, the contact zone is configured to pivot about an articulation axis that extends through the first and second nostril regions.

The invention in question is a sealing method for injection molded polypropylene plastic valves, allowing simple and safe sealing of the valve in closed, semi-open and open positions without having to manually add the sealing material, as well as the sealing rib related to the method. The type of valve comprises of two parts (see FIG. 1): a) The Valve Body (2) with inlet (7), outlet (8) and a chamber for the Valve Core (1) b) The Valve Core (1), with the handle (4), valve opening (6) and sealing material (3) The invented method is using double injection techniques to shape the polypropylene Valve Core (1) of the valve in the first injection stage and then apply the thermoplastic elastomer sealing material (3) to the surface of the polypropylene Valve Core (1) in the second stage. In this way the Valve Core (1) and the Sealing Material (3) is made as one part in one single process, but with two separate injection stages. The Sealing Material (3) which is adhered to the surface of the Valve Core (1) is creating a sealing barrier where there is interference between the Sealing Material (3) and the Valve Body (2). The actual sealing is made by a protruded Sealing Rib (5) at the edges of the area of the Sealing Material (3). The elastomer Sealing Rib (5), which will seal against the inner surface of the Valve Body (2), is carefully measured to ensure proper sealing in all open/closing stages, while at the same time not adding too much friction between the parts. This way proper sealing is achieved, without having to increase the torque required to open and close the valve.

An aspect of the invention is directed to a method for producing a connector using injection-molding by providing at least one conductor and at least one contact pin which are electrically connected at a contact point, producing a thermoset premold from a thermoset using injection-molding, wherein the thermoset is injection-molded around at least a first section of the at least one conductor and/or around at least a second section of the at least one contact pin, and injection-molding of a thermoplast on the thermoset premold, wherein the step of injection-molding takes place before the thermoset premold has obtained a degree of curing of 90%. Another aspect of the invention is a connector comprising at least one conductor and at least one contact pin is disclosed.

A device for providing a known concentration of blended air and oxygen, or oxygen, to an individual which incorporates a face mask inside a hood, thereby preventing aerosolization of potentially harmful exhaled gases and controlling condensation issues within the hood while under pressurized conditions. The air tight seal required to allow placement and removal of the hood on the individual will be manufactured using injection molded elastomers to over-mold injection molded rigid plastic components.

A brush head for an electrically driven toothbrush is provided herein. The brush head includes a holding part connected to a carrier part, at least one bristle bundle formed by bristle filaments, and a resiliently soft cleaning element. The carrier part includes passage bores, through which the bristle bundle and resiliently soft cleaning element project, and each is fixed to the carrier part by way of a thickened portion formed by a filament material or a resiliently elastic material, respectively. A method of producing a brush head is also provided, including preparing the carrier part as a separate component with passage bores, fixing the bristle bundle and the resiliently clastic cleaning element to the carrier part with a thickened portion provided on the bristle bundle and the resiliently elastic cleaning element, respectively, and connecting the carrier part to the holding part.

The invention relates to a tire pressure monitoring unit for arranging within a motor vehicle tire for sensing the tire filling pressure, wherein the tire pressure monitoring unit has a housing, in which electronic parts and at least one pressure sensor are arranged, wherein the housing has an air inlet, by means of which the tire filling pressure is applied to the pressure sensor, wherein the housing is designed as a multi-component plastic inj ection-molded part, in particular a two-component plastic injection-molded part, wherein a first component forms a lower housing shell and an upper housing shell and wherein a second component forms a seal between the air inlet and the pressure sensor. The invention further relates to a method for producing a tire pressure monitoring unit.