Abstract: An open end ratchet wrench has a head portion which includes a slot into which a plurality of cantilever spring segments project. The ends of the cantilever spring segments engage and turn the flat surfaces of a nut when the wrench is turned in a tightening direction. When the wrench is turned in the opposite direction, the cantilever springs flex to override the corners of the nut and then spring back to engage adjacent flat surfaces of the nut.

Abstract: A dental articulator comprises an upper frame, a lower frame and a pair of condyle assemblies which permit articulating relative motion of the frames. The condyle assemblies each permit individual adjustment in an antero-posterior direction and a superior-inferior direction thus making possible the simulation study and correction of temporo-mandibular joint dysfunctions.

Abstract: A coil spring manufacturing machine which is controlled by a micro-computer is described. Driving source of the coil spring manufacturing machine is a single motor. The power is divided into two independently controllable operation transmitting systems by a power dividing means. The one operation transmitting system transmits rotation to a mandrel assembly for winding a coil around a mandrel. The other operation transmitting system transmits a pitch movement to the mandrel assembly. Machining tools for the formation of coil spring legs are positioned around the mandrel assembly.

Abstract: A dental tool for reducing tooth structure includes a shaft adaptable to be carried by rotating means at one end thereof and a shank extending axially from the other end of the shaft. The shank has a plurality of non-intersecting grooves forming a plurality of reducing elements spaced along the length of the shank. Each of the grooves in axial cross-section of the shank has a rounded bottom wall while the reducing elements may have one of various configurations.

Abstract: A bowling aid device and method are operative to circumferentially compress the knuckle portion of a bowler's digit and reduce the same prior to insertion of the digit into the corresponding digit hole of a bowling ball. The device comprises a flexible and inextensible strip-like or ring-like compression member adapted to be applied completed around the knuckle and adjustable locking means operative to tighten the compression member in wrap-around compressive engagement with the knuckle for a preselected period of time. The resultant circumferential reduction of the knuckle provides optimum sliding engagement of the reduced digit within the corresponding digit hole in the bowling ball and improved bowling performance.

Abstract: An electric stringed musical instrument is formed of a body section adapted to detachably receive an interchangeable neck section. The body section mounts the electronic tone and volume controls and includes the electromagnetic pickup which is rendered into operative proximity to the neck strings when the instrument is in the assembled condition. The body section is adapted to interchangeably receive neck sections of various string types and fingerboard widths and the electromagnetic pickup is selectively moveable in the longitudinal, i.e., horizontal direction and also in the vertical direction to accomodate the particular string characteristics of the interchangeable neck section.

Abstract: In a device for measuring motion of living body organs, an essential part which defines the oscillation frequency of the oscillator circuit of the device for measuring same comprises an electro-mechanical oscillator of a quartz resonator and impedance elements as coils or capacitors. The motion of organs on a living body surface or in a living body causes impedance changes in an impedance element and therefore, the detector is capable of detecting and measuring living body organ motion through a change in frequency.

Abstract: A mattress includes a recess for receivably seating a single-use receptacle having a screened opening for receiving fluids and wastes from the body of a bed patient. The sheet wrapping the mattress has an opening in registry with the receptacle opening. The receptacle, when filled with fluids, is removable by sliding the same through a slot in the mattress which extends from the mattress recess to one side thereof thereby avoiding the necessity of moving the patient. A fresh receptacle is similarly inserted into the mattress.

Abstract: Amateur photographers who print and develop their own photographs often set up a temporary darkroom in a bathroom. This invention, entitled "darkroom module" is to be placed in front of an open door of a room, such as a bathroom, to facilitate the use of the room as a darkroom by providing:a light seal enabling the bathroom to be light-tighta working area which permits the permanent mounting of photographic equipment such as an enlarger, timer, color analyzer, etc.storage areaa light-proof air inlet in which a ventilating fan may be installed, if required, for adequate ventilationelectrical outlets for photographic equipment.When the darkroom is not required, the module is to be moved to another location. Since much of the equipment may be mounted permanently and the other equipment may be stored in the module, the setting-up time for conversion of the bathroom to a temporary darkroom is minimized.

Abstract: A digital tachograph system includes a vehicle unit operative to detect vehicle performance characteristics such as vehicle speed, elapsed trip distance, engine rpm, total engine revolutions, total fuel consumption, rate of fuel consumption and the like as a function of time. The forgoing vehicle performance characteristic data is displayed in the vehicle unit and is stored in a data memory located therein. A fixed base unit includes a central computer system for processing vehicle performance data, storing the data in a memory file and for reading out the vehicle performance data in the form of a printout, graph plot, CRT display or the like. The vehicle performance data may be transferred from the vehicle unit to a field terminal which connects to the central computer system either by means of a cable connection by directly interconnecting said portable memory unit or by radio transmission means.

Abstract: This invention, entitled "dual position table top support" permits a table top to be supported in a horizontal working position or in a vertical out-of-the way storing position. The support is such that it is to be installed in an area bounded by three adjacent walls without having to fasten it physically, i.e. by means of screws, nails, rivets, adhesive, to any wall. It is intended for use in locations where a free-standing support or a support physically fastened to a wall is impractical. It is particularly suited for installation over a bathtub to provide a utility table suitable for hobbyists such as amature photographers who use their bathroom as a temporary darkroom.

Abstract: A miniature antenna which is rugged, extremely light-weight and which is especially adapted for reception across the entire FM band comprising an omnidirectional half-wave dipole having feed structure comprised of curved overlapping dipole element points connected to a solid state amplifier having staggered tuned input and output circuits. The input to the amplifier is maintained essentially balanced to preserve the omnidirectional pattern of the dipole.The physical location of the solid state amplifier is such that it is directly connected to the feed point of the dipole eliminating transmission line losses.The coaxial cable is employed in a diplexed manner for connecting the DC power supply to the solid state amplifier and for connecting the amplified output signal to an impedance converter which is to provide proper impedance match for the antenna input signals of an FM tuner/receiver.

Abstract: A method and device for rendering safe the opening or removal of a machine door which is normally kept locked to guard machinery or an area which is potentially hazardous. The device includes a lock unit having a lock body for connection to the frame panel of machinery to be guarded and supports an electrical switch. A key unit includes a key body which supports a rotatable control knob and a key adapted to cooperate with the lock body when the door is closed on the frame panel. The key body includes a radially extending peripheral flange formed with a hole towards its outer edge which rotatably receives the head of a screw. The threaded end of the screw cooperates with a threaded hole in the frame panel when the door is closed and must be screwed fully into the hole to fully close the door onto the panel.

Abstract: Pulse motors rotating at periods corresponding to physical rhythm, rhythm of sentiment and rhythm of intellect are provided and discs having a pin eccentrically extending are coupled, respectively, with output axes of pulse motors so as to convert rotation movement into reciprocation movement through T-shaped piston rods. Plungers having ball point pens are respectively provided on the T-shaped piston rods. Data put in by digital switches are stored and calculated by the guide number to determine rotation angle of the pulse motors to set the ball point pens at the starting position. At the first recording area for the first date of a month arriving below the ball point pen, the pulse motors are initiated in their rotation from the starting position within a proper period thereof and a coil is energized so that the ball point pen will come in contact with the recording paper for drawing up the biorhythm chart.

Abstract: A filtration device which comprises a frame having a plurality of nozzles that are opposed but shifted aside relative to one another. The boxlike frame is composed of a first frame having a U-shaped cross-section and a second frame having an inversely U-shaped cross-section, both the first and second frames being provided with joining projections. A plurality of intake tubes in conical shapes are arranged on the inside of the first frame in a manner like a checkered pattern and the cross-section of each intake tube is enlarged in the suction direction and reduced in the exhaust direction. A plurality of outlet tubes projected downward and having fins at their lower ends are attached to the inside of the second frame. These outlet tube group is also arranged like a checkered pattern and shifted aside relative to the other nozzle group on the first frame.

Abstract: A panty hose garment has a panty portion of increased width to accomodate and provide an improved fit for large hip sizes. The garment is produced by forming a longitudinal slit in first and second tubular knit blanks extending from their respective open ends intermediate the front and rear thereof and forming diametrically opposed first and second slits in a third tubular blank of reduced size intermediate the front and rear thereof. The edge of slit in the first tubular blank is seamed to the edge of the first slit of the third tubular blank and the edge of the slit of the second tubular blank is seamed to the edge of the second slit of the third tubular blank. The garment thus formed includes a panty portion comprising the slit upper welt portions of a pair of tubular blanks respectively seamed to the diametrically opposite slits of a third central tubular blank of reduced length.

Abstract: An ultraviolet liquid purification system includes a purification chamber having banks of ultraviolet lamps distributed therein for applying germicidal ultraviolet radiation to the liquid flowing through in said chamber. Ultraviolet photocell detectors are located in said chamber to detect the level of ultraviolet radiation transmitted through the quartz jacket housing the ultraviolet lamps and through the liquid being purified. Indicator means produce an alarm signal when the total ultraviolet radiation transmitted through the liquid drops below a preselected level. In addition, a light conducting fiber is provided for each ultraviolet lamp having its input endface located at the ultraviolet lamp and its output endface at a display panel whereby identification of a particular ultraviolet lamp that has failed may be easily detected. Photocell detector means are provided to detect the light output at the output endface of the light conductor fiber and to produce an alarm signal when said light output fails.

Abstract: A rotary switch includes a contact bar movable between a switch-open and a switch-closed position and a rotatable circular cam member controlling the movement of said contact bar. Spring means urges the contact bar into operative engagement with the surface of said cam member. The cam member is rotatably contained within a cavity in the switch housing, the cavity having a wall surface guiding the cam member during rotation of the latter. Biasing action of the spring means upon said contact bar urges the cam member against the wall surface of said cavity, with said wall surface serving as the only bearing surface for said cam member during rotation of the latter. A pin and slot coupling is also provided as an integral portion of the cam member and housing to limit rotary movement of said cam member between precise switch-open and switch-closed positions.