Abstract: In one aspect, the present invention is directed to a pacifier, comprising: a nipple; a protection cap; and a connection mechanism, for connecting the nipple to the cap, the connection mechanism comprise a springy element wherein in the idle state of the springy mechanism the nipple is entirely protected by the cap from contact with a plane, and in the non-idle state thereof the nipple outstands from the plane, thereby enabling being used by an infant. According to one embodiment the connection mechanism comprises: a cylinder; a sliding plug fitting closely inside the bore of the cylinder; a spring keeping the plug secured to an opening of the cylinder, the nipple being connected to the plug. The springy element may be based on a spring, bellows, an elastic object, and so forth.

Abstract: A toothbrush distal end for attachment to a handle of a mechanical toothbrush; the distal end comprising: a head; a neck having a proximal end and a distal end; a drive shaft having a driving bevelled gear fixed to distal end thereof; a brush consisting of a bristle array on a brush back plate, and a movement; the head being fixedly attached to the distal end of the neck; the neck being fixedly couplable to the handle and the drive shaft being couplable to a driving means; the neck being hollow and serving as a sleeve for the drive shaft; the drive shaft being rotatingly drivable about its axis within the neck, by the driving means; wherein the movement is situated within a cavity in the head and is connected to the brush back plate, for moving the brush back plate along an eccentric orbital path with respect to the head when driven by the driving means via the rotating drive shaft.

Abstract: A seal arrangement comprising three sealing rings. The first ring is intended to locate in a groove in a first machine element and has a bearing surface by which it is bearable against the base of the groove of the first machine element, and a surface spaced from its bearing surface. The second ring has a first bearing surface by which it is bearable against the spaced surface of the first ring, and a second bearing surface which is spaced from its first bearing surface, contactable with surface portions of a second machine element and has an annular groove. The third ring is intended to locate in the annular groove of the second sealing ring and has a first bearing surface by which it is bearable against a wall portion of the groove of the second sealing ring, and a second bearing surface which is spaced from its first bearing surface and which is bearable against the second machine element.

Abstract: Closing unit for an injection moulding machine or transfer moulding press with a frame, a first tool carrier rigidly connected therewith, a second displaceable tool carrier and hydraulic displacing devices, which are eccentrically arranged with respect to the tool carriers and of which each has a hollow cylinder fastened to the frame and a piston which is displaceably guided therein and of which each is provided on one side with a first shaft and on the other side with a second shaft. The first shafts are arranged such that they are drawn into the hollow cylinders when the tool carriers are brought nearer to each other, and wherein one each of the two shafts of the pistons is connected rigid with the second tool carrier. According to the invention, at least two pistons are provided, the first shaft of which has a smaller diameter than its second shaft, and there are also provided at least two pistons, the first shaft of which displays a greater diameter than its second shaft.

Abstract: An apparatus for selectively moving, for instance alternately or simultaneously rotating and displacing in axial direction, a machine element mounted to be rotatable and axially displaceable, comprising a motor, a hollow cylinder and a piston displaceable in said hollow cylinder. The piston is provided with a connection element for rigidly connecting it with the machine element. The piston also has a lengthwise extending opening which is sealed towards the outside at the side of the connection element and at the other end there extends into said lengthwise extending opening a drive shaft connected with said motor. This drive shaft at the side of the connection element has an end which together with the inner surface of the piston forms a first sealing section forming a sealed sliding seat, said drive shaft at the region of its end connected with the motor possessing a second sealing section which together with the hollow cylinder or an element rigidly connected therewith forms a tightly closing sliding seat.

Abstract: A closure mechanism for an injection molding machine or extrusion press having a frame, a number of parallel extending rods, a first tool support fixedly connected with the frame and a second tool support displaceable along said rods. There is also provided a hydraulic mechanism or device for displacing the second tool support along the rods. According to the invention the rods possess engaging means and the second tool support possesses engaging elements which can be engaged in the engaging means of the rods. The rods are displaceably connected with the first tool support and the hydraulic device possesses at least one displacement mechanism serving to displace the second tool support with respect to the rods and for each rod possesses an additional displacement mechanism fixedly connected with the first tool support which serves to displace the relevant rod with respect to the first tool support.

Abstract: Apparatus for plasticizing and injecting mouldable synthetic material is disclosed. The apparatus comprises a cylindrical member having a longitudinal cylindrical bore therein into which such material is introducible, nozzle means firmly secured to one end portion of the cylindrical member and communicating with the cylindrical bore, a worm shaft mounted in the bore to be axially and rotatably displaceable relative to the cylindrical member and provided with an opening of circular cross-section extending longitudinally of the shaft from an end face thereof facing the nozzle means, and a closure body firmly secured to the cylindrical member and projecting into the opening, the closure body providing a seal between the opening and the longitudinal cylindrical bore. Advantageously, the apparatus is provided with valve means disposed at the end portion of the worm shaft which is next adjacent the nozzle means to restrain flow of such material along the cylindrical bore in a direction away from the nozzle means.