Abstract: Anti-fogging systems for air-cooled, piston powered single engine aircraft which effectively prevent windshields from fogging during cold weather by directing a forceful stream of unheated, ambient air in a direction which intercepts exhaled air from an aircraft occupant to impede the moist exhaled air from directly reaching the windshield and condensing on the windshield. The disclosed systems keep the windshield of a small air-cooled, piston powered single engine aircraft from fogging while permitting a pilot to perform his pre-flight preparation, taxi and takeoff in cold climates.

Abstract: Anti-fogging systems for air-cooled, piston powered single engine aircraft which effectively prevent windshields from fogging during cold weather by directing a forceful stream of unheated, ambient air in a direction which intercepts exhaled air from an aircraft occupant to impede the moist exhaled air from directly reaching the windshield and condensing on the windshield. The disclosed systems keep the windshield of a small air-cooled, piston powered single engine aircraft from fogging while permitting a pilot to perform his pre-flight preparation, taxi and takeoff in cold climates.

Abstract: An operating room light includes a light casing, a reflector and a lighting means, wherein the operating room light is in the form of a single-reflector light. To prevent the operation wound from drying out, it is proposed that LEDs, OLEDs or laser diodes are used as the lighting means. The operating heat occurring can be dissipated outwardly by way of heat conduction and given off to the environment, away from the patient, by heat transfer of material—air and/or by heat radiation.

Abstract: For the purposes of increasing pilot visibility and comfort in small planes during winter conditions, this invention provides an auxiliary heating system. Prior to actual flight, that is to say that during start up, warm up, taxi and takeoff, a small aircraft does not intake sufficient outside air to warm the cabin and defrost the windshield. The normal heating system on a small plane depends upon ram air when the plane is flying at normal speeds. This invention consists of a simple replacement part, mainly an electric blower which sucks in air from outside the aircraft and forces it through the muffler shroud and thereafter into the cabin and defroster ducts. The system is operated by a switch located on the control panel. Once the aircraft is in flight, the system may be shut off as there is sufficient ram air to heat the small aircraft.

Abstract: For the purposes of increasing pilot visibility and comfort in small planes during winter conditions, this invention provides an auxiliary heating system. Prior to actual flight, that is to say that during start up, warm up, taxi and takeoff, a small aircraft does not intake sufficient outside air to warm the cabin and defrost the windshield. The normal heating system on a small plane depends upon ram air when the plane is flying at normal speeds. This invention consists of a simple replacement part, mainly an electric blower which sucks in air from outside the aircraft and forces it through the muffler shroud and thereafter into the cabin and defroster ducts. The system is operated by a switch located on the control panel. Once the aircraft is in flight, the system may be shut off as there is sufficient ram air to heat the small aircraft.

Abstract: A roller bearing cage is made of a bent strip of sheet metal having abutting ends that are connected to one another, the cage being comprised of two end rings and a cage frame surrounding the windows, the windows retaining and guiding the rollers. In order to permit the manufacture of rolling element bearing cages of different reference circle diameters while using only one tool for rolling elements with a specific diameter d, the center distance between adjacent the cage windows in the circumferential direction is .pi.d/2.

Abstract: A roller bearing cage is made of a bent strip of sheet metal having abutting ends that are connected to one another, the cage being comprised of two end rings and a cage frame surrounding the windows, the windows retaining and guiding the rollers. In order to permit the manufacture of rolling element bearing cages of different reference circle diameters while using only one tool for rolling elements with a specific diameter d, the center distance between adjacent the cage windows in the circumferential direction is .pi.d/2.

Abstract: In a hair treatment device with a winding mandrel driven by a motor and used to wind up hair, the current used by the motor is led through a current limiter circuit in order to limit torque. The current limiter circuit comprises an operating stage and a safety stage. The safety stage is utilized to limit current if the operating stage fails.

Abstract: A hair drying device comprises a rotatable curling iron, a reversible motor for driving the curling iron, a reversing switch connected to the reversible motor for causing the motor to reverse its direction of rotation, and a hair dryer including an outflow nozzle for directing hot air produced by the hair dryer tangentially at hair wound upon the curling iron. The outflow nozzle is movable between first and second positions. The outflow nozzle and the reversing switch are coupled together so that the curling iron is caused to rotate in one direction when the outflow nozzle is in its first position, and in an opposite direction when the outward nozzle is in its second position. An electric circuit includes a first switch which is actuated directly by the reversing switch and a second switch which is actuated by the reversing switch after a predetermined time delay, preferably by an RC circuit.