In order, when taking impressions of the upper jaw and lower jaw for dental purposes, to be able to introduce the upper-jaw tray and lower-jaw tray individually into and to remove them individually from the mouth of the patient, one of the trays is formed on the bite surface with depressions against which openings in the second tray come to rest, so that the impression compound is able to penetrate through the openings into the depressions.

The within invention, which is directed to effective use of electric energy is concerned with an improved electric motor which, as a substitute for the conventional operative arrangement of rotor and field coils, instead has the rotor urged through movement centrally of, rather than merely past, the field coils, thus obtaining maximum prime mover drive for any electrically powered motor.

A fence comprises posts and lattice panels which are fixed at their vertical edges to the posts. The post carries, on its front side, hooks, on which the horizontal bars of the lattice panels rest. The lattice panels are clamped between the front side of the post and the rear side of a hollow front profile which have on the rear side, at the locations of the hooks, holes, into which hooks penetrate with a leg directed obliquely outward and upward. The upper hole edges slide downward on the slope...

This invention relates to surgical instruments such as probes or forceps which are heated from an external current source, and more particularly to such instruments which are used, for example, for laparoscopy. The invention consists in the provision of a switch in the circuit of a heating element, a settable electronic control means for closing said switch for an adjustable length of time and means for automatically opening said switch for a length of time equivalent to the cooling-off period f...

In order to develop a suction device for cleaning purposes having a collecting container, which includes a closable suction inlet, a suction outlet and a filter disposed therebetween and is connected to a suction unit by a suction line emanating from the suction outlet, the suction line being closable by an outlet valve and an external air supply closable by a supply valve being disposed at the side of the filter remote from the suction inlet, in such a way that it facilitates filter dedusting, ...

An assembly for warming and containing warmed acrylic liquid for manicuring application. The electric warmer is especially designed to efficiently heat a geometrically-matched dappen dish containing acrylic liquid to bring the temperature of the liquid sufficiently high to prevent crystallization before application to the fingernails. The heater and dappen dish assembly is uniquely designed to provide unobstructed access to the warmed liquid while the dish remains in the heater. The heater provi...

The invention relates to a suction device for medical purposes with one or more side apertures and with a valve which responds to a vacuum. The invention is characterised in that the side apertures are covered by film halves which overlap in the middle, one of said halves being made from highly elastic thin material while the other is made from a stiff inflexible material and covers the flexible film in the overlap region. The side apertures can also take the form of elongated apertures. An adva...

Milling cutter for medical purposes, in particular for use in orthopedic operations, which has a milling body made of thin-walled material. The milling cutter may take various forms and is provided on its surface with a number of milling teeth which are arranged systematically in terms of number and position. The arrangement and shape of the milling teeth are precisely defined. As a result, the milling cutter is an accurate tool which not only facilitates the work of the surgeon but also conside...

A puppet rug that resembles a skinned animal, human, or an imaginary character. The head of which can be manipulated so as to mimic an animal, a human, or an imaginary character. The head is lined and stuffed to keep its shape when it is in use as a puppet. The body is lined, but not stuffed. It has a large surface area so that a child can play on it, sleep on it, sit on it, and wrap himself in it. It is designed to provide visual and tactile stimulation. It may be used as a toy, a puppet, or as...

A filter tube for drain purposes provided with openings debouching at its outer surface, said openings being adapted to be connected to a sub-atmospheric source through at least one discharge channel in the tube. At least one flush-channel is formed in the tube, which is fully separated from the discharge channel(s) and which is adapted to be connected to a source of pressure fluid at or adjacent the one tube end, while at or adjacent the other tube end an outlet for said pressure fluid is forme...