Abstract: An electric fluid heating device for heating comparatively small amounts of a fluid mdium, particularly for dental purposes, is characterized in that an operable controllable semiconductor, such as a transistor, is used as the heating element. The fluid heating device includes a metallic casing provided with a fluid heating chamber having a fluid inlet and outlet. The semiconductor is seated in a recess in the casing in heat exchange relation with the chamber. A temperature responsive control circuit including a PTC resistor in heat exchange relationship with the chamber is provided for regulating the current flowing through the semiconductor and thus the heat output thereof. The casing is made in two parts to permit a damaged smiconductor to be easily removed and replaced.

Abstract: A non-linear optical frequency doubling device comprised of a laser means producing infrared light and crystal optically connected therewith for receiving such light and doubling the frequency thereof. The crystal is composed of M[Hg (SCN).sub.4 ] wherein M is selected from the group consisting of Cd and Zn.

Abstract: A foam generator for foaming liquids having two peripheral disc portions each being connected with a housing with a gas inlet to one of the housings. The housings being connected together with the peripheral disc portions forming a hollow space such that gas fed to the hollow space through the gas inlet enters the hollow space and exits between the peripheral disc portions to form air streams to foam the liquids.

Abstract: Device for limiting the speed of internal-combustion engines, particularly uitable for small and medium-size, two-stroke engines which operate at rather high revolutions, such as between 2000 and 10000 rpm. Two exemplary embodiments are disclosed. In both, an ignition coil receives a discharge voltage from a capacitor energized by a charging coil, a rectifier being coupled to the output of the charging coil, and a separate tripping coil used in the circuit arrangement, which latter is displaced in phase with respect to the charging coil. A semiconductor switch, preferably a thyristor with steep electrical characteristics, is connected to the capacitor and has its switching gate connected to the tripping coil, the conductive phase of the switch being so controlled by the tripping coil that the charging process of the capacitor is at least partly inhibited when a predetermined maximum engine speed is attained or exceeded.

Abstract: A track for combined monorail and overhead monorail having a power supply and control tracks consisting of a U-shaped rail section having inwardly extending flanges at its upper sides for receiving the rollers or wheels of the accessory device. At least one shoulder section is formed on the lower surface of the bottom portion of the U-shaped rail section as well as on the upper surface of the upper inwardly extending flange so that the track can be mounted on a suitable support or suspension structure.

Abstract: A sanitary waste collector has a disposable container forming a scoop. The container is loaded onto and carried by a rod and frame assembly. The eliminations of an animal may be captured directly into or be scooped into the container with the aid of a disposable scraper at the end of a separate spring loaded rod and handle assembly. When the container is filled it is sealed by pulling a pull ribbon attached to a folded flap at the bottom of the container and by pulling the flap over the front of and onto the top of the container and pressing the flap against an adhesive surface. The sealed container can drop out by inverting the rod and frame assembly.

Abstract: A receptacle for photocopy machines and the like consisting of a C-shaped chamber wherein the top portion has a substantially horizontal section which receives the copies as they are ejected from the photocopy machine. A curved portion which is integrally formed with horizontal portions, inverts the copies 180.degree. so that they come to rest in a tray formed in the third portion of the receptacle. The copies are thus arranged in the same order in which they are reproduced. An opening is formed along the third horizontal portion to allow removal of the copy.

Abstract: A gonioscope for viewing the angle of the trabeculum and the drainage angle and related structures comprising a lens having a cylindrical surface and formed at its front end with four inclined facets narrowing toward the front free end thereof. The lens includes a front surface substantially perpendicular to the longitudinal axis of the cylinder having therein a concave inwardly directed recess, the said facets constituting total internal reflection surfaces.

Abstract: A filter device, particularly a dry filter device for refrigerant in cooling systems, comprises an inlet- and outlet-equipped housing having a chamber containing the filter, which chamber has a sealable aperture for allowing replacement of the filter in the chamber, and a valve having a valve body which in an operating position establishes communication between the inlet and the outlet via the chamber containing the filter and which in a service position establishes communication between the inlet and the outlet around the chamber containing the filter to allow replacement of the filter. The valve body has an evacuation position in addition to the two said positions, in which evacuation position said valve body seals the inlet and establishes communication between the chamber containing the filter and the outlet.

Abstract: Multiple monopolar electrical contacts are applied to the scalp or body, using other points on the body as reference and ground. The brain muscle or other bioelectric waves conducted from each contact, relative to the reference point, are amplified, filtered, and instantaneously analyzed to produce a signal which may be perceived by the person or persons generating the bioelectric waves. This sensory feedback signal simultaneously may communicate to the generating party or parties the ongoing fluctuations in frequency, amplitude, and phase unity among two or more biological rhythms occuring within an individual, couple, or group of persons.

Abstract: A float controllable valve responsive to the level of condensate having a housing with an internal chamber including an input supply opening and a discharge opening. There is a membrane capsule disposed in the interior of the housing and formed with at least a first throttle inlet bore communicative to the interior of the membrane capsule with the internal chamber of said housing at a pressure side. The membrane capsule includes a rigid inlet nozzle extending into the interior of the membrane capsule and has a nozzle bore communicating with the discharge channel. The inlet nozzle has a valve seat in the interior of the membrane capsule between the throttle bore and the nozzle bore. A locking member is slidably disposed and extends into the interior of the membrane capsule and has one end in sealing contact with the valve seat.

Abstract: A rotary fluid flowmeter device comprising a casing enclosing a chamber bounded partly by a fluid-tight but magnetically permeable partition, said chamber having an inlet and an outlet for the fluid of which the flow is to be metered, and a rotor having radially-directed, axially-extending blades being borne for rotation within the chamber, wherein in operation fluid entering the chamber through the inlet is directed towards and impinges upon the rotor blades to cause rotation of the rotor, and wherein the casing houses an electronic sensing circuit on the far side of the partition from said chamber, the circuit being adapted to produce an electronic pulse train the rate of which represents the rate of rotation of the rotor.

Abstract: Electric generators having a rotor on a shaft and a stator, both carrying peripherally successive poles that have a substantially uniform angular distance or pole step therebetween, with at least one pair of electrically identical but separate, axially aligned generator sections that include pole cores that occupy substantially the same sectors as the gaps between them, and wherein the angular position of the rotor shaft, in which the poles overlap between the rotor and the stator of the same generator section, is offset for both sections by half the angular distance between the poles. Preferably at least one group of radially mounted, and at least one group of axially mounted, pole pairs os provided in both the rotor and the stator. Preferred exemplary embodiments are disclosed.

Abstract: An apparatus for foaming liquid cosmetic substances, comprising a vessel for receiving a supply of a cosmetic substance for application and an electrically driven pump merging into the vessel and having an exit side connected to the air supply duct. A foam generator in the form of a porous, open-cell member is immersed in the substance and disposed at an end of the air supply duct and is adapted to introduce the air stream supplied thereto by the pump into the substance in the form of a plurality of small bubbles. A delivery nozzle is connected to the vessel from which the foam developed in the vessel emerges.

Abstract: An electrode device for use in monitoring conductive liquids consisting of a mounting with a first electrode having a tie rod portion disposed through the central opening of the mounting and a clamping collar secured to the tie rod adjacent to one side of the mounting. The first electrode then extends further in an extending portion and is surrounded coaxially by a second tubular electrode which is connected through a contact sleeve disposed in the central opening of the mounting. There is also a counterelectrode coaxially surrounding the second electrode and secured to the mounting surface. The second electrode has an end flange portion with a passageway for receiving the rod portion of the first electrode. The clamping nut secures the rod portion of the first electrode and the end flange between insulating washers to the mounting.

Abstract: A check valve controlled by the medium passing through comprising: a housing having an input opening on one side defining a valve seat and an output opening communicative with the input opening, a locking member disposed over the input opening of the valve seat and positioned on the seat, the locking member having a pivot axis at one end, a bearing cap mounted in and engaging the walls of the discharge opening, the cap having a pair of bearing side plates formed at one end, the side plates having laterial recesses formed therein for receiving the pivot axis of the locking member. There is also a spring coupled to the housing for urging the locking member against the valve seat.

Abstract: A hydraulic press for metal working of end portions of rod-like or pipe-like metallic work pieces comprising a clamping device for arresting the work piece, and a hydraulic press cylinder, having piston rods which move toward the work piece. Working tools are disposed on the piston rods, and press cylinders are disposed on both sides of said clamping device, whereby the piston rods of the press cylinders are moved toward each other in a longitudinal direction of the work piece.

Abstract: A residual melt of liquid silicon is removed from a crucible containing the ame by immersing in the melt a capillary body of carbon felt, the melt being absorbed by the capillary body, and removing the capillary body and absorbed melt from the crucible.