Abstract: An electrically operated flash camera employs an infrared pre-flash reflected light signal stored in a single memory storage to control focus and aperture. Two comparators serve to govern both operations, sensing potentiometrically derived analog position indicating signals representing lens position and aperture setting as the lens and aperture control elements are scanningly driven through their ranges of settings. Comparison of these analog signals with the stored signal is used to terminate scanning to set focus and aperture. A visible light photosensing means controls aperture and inhibits the exposure flash if ambient illumination is adequate.

Abstract: The parametric amplifier includes plurality of parameter changing or exciting regions provided in a periodic array on a wave propagation medium having the property that waves having different frequencies travel through the medium at different velocities, so as to cause a parametric action only when a wave applied to the amplifier satisfies a predetermined condition relative to the dispersive nature of the medium.

Abstract: A portable room security alarm features a smoke detector alarm, a motion sensing intrusion alarm, a temperature sensing alarm, and a digital display alarm clock. The security alarm includes a deployable thermally conducting mounting clip for mounting the alarm at the top of a door with the clip extended to pass around the upper edge of the door. A deployable temperature sensor probe may be attached to the clip to give early warning of a fire outside the door. The temperature probe may alternatively be attached to other metallic structures passing through the door frame, e.g. door knobs, hinges, etc. Large ventilating apertures in an extensible telescoping housing allow access of smoke to the smoke sensor, and with the housing closed the sensor is sealed off against long term contamination.

Abstract: A miniature thermal switch features simplified single-spring construction requiring only four components within an enclosure housing. None of the components requires subassembly, and all are designed for completely automated assembly of the finished switch. A fabrication method features self-alignment of the elements by means of closely confining barrier walls. A wiping action of the contacts during melting of a contact-restraining meltable pellet serves to insure an abrupt circuit interruption at the threshold temperature.

Abstract: A tape player is provided which has a tape player set and an operation board mounted on the front face of the tape player set. The tape player is particularly characterized in that a tape pack insertion aperture which is formed in a part of said operation board is closed or opened by a cover which is rotatable about a rod fixed on the front face of said operation board.

Abstract: A slow-blow electrical fuse structure features one or more conducting fuse links for high-current blow-out protection and located in individual chambers filled with arc-quenching filler and in thermal contact with a spring-loaded piston-and-guide structure soldered into an extended position and similarly soldered to one of the fuse links by an extension leading through a chamber-separating insulating partition washer. At overload the heat from the fuse links melts the aforementioned soldered junctions, causing the spring to collapse the piston over the guide, simultaneously withdrawing it from the chamber, thereby breaking the circuit. A similar chamber-defining washer is captively affixed to the opposite end of the piston-and-guide assembly affixed to the optional second fuse link, both partition-forming washers being rotatingly captively secured to the ends of the piston-and-guide assembly by specially configured apertures therein.

Abstract: Acoustic surface wave device comprising a lower electrode disposed on an elastic substrate and an upper electrode consisting of two comb-shaped electrodes disposed apart from each other, opposite to said lower electrode through a piezoelectric film covering said lower electrode, at least one of said lower and upper electrodes being constructed as an apodized electrode.

Abstract: A lens system for a disc camera features a plurality of objective lenses of different focal lengths carried on a turret support that can be rotated into different stable positions in front of the framing area of the film disc to bring a selective lens into picture-taking position. An associated viewfinder adjusting system ganged for operation with the turret support projects a different framing mark pattern into the field of view, the projected pattern corresponding to the image field produced by the objective lens currently in position. A shutter releases inhibitor bars actuation of the shutter release unless an objective lens is properly positioned for exposure.

Abstract: An air suspension system for each rear wheel of van-type vehicles features a seven-point articulated system. A pair of rearwardly diverging torque rods are pivotally attached to the axle hanger to provide a modified parallelogram linkage. The angle of divergence is set by an adjustable torque rod pivot point and an automatic pneumatic height restoration feature to dispose the torque rods at optimum orientation to provide, among other things, a measure of anti-rise action on braking. A pair of air springs mounted on articulated carrier arms carries the weight of the vehicle without the use of assisting springs. Anti-sway is provided by specification of elastic rates of bushings in pivots providing the articulation of the system.

Abstract: A manufacturing method for an MIS type semiconductor device features in the preferred form a single masking operation used to define source, gate, and drain windows simultaneously in an upper insulating oxide layer disposed over a semiconducting polysilicon layer, the polysilicon layer being separated from the semiconductor substrate by a thin insulating oxide layer serving as the gate oxide. By subsequent deposition of an overall capping nitride layer, followed by selective removal of layers, using relatively low resolution photoresist and portions of the layers themselves as intermediate etching barriers, and by finally converting the polycrystalline layer to an oxide except where it is protected from oxidation by the presence of a nitride stripe over a gate window, the resulting gate electrode is precisely centered between the source and drain windows, and is sealed on all three sides by a protective oxide layer.

Abstract: A pushbutton tuner arm mechanism features a lockable setting plate rotatably mounted on an arm reciprocatingly actuated by a pushbutton, the setting plate having an extension configured to engage a V-shaped tuning notch in a memory slide. A locking spring affixed to the arm peripherally engages portions of the setting plate to hold the arm in a chosen position, the locking force being releasable upon extraction of the pushbutton. An arcuate boss integral with the setting plate is configured to engage portions of a generally V-shaped cut in the arm to provide positive play-free locking of the setting arm in position.

Abstract: An automatic linearity correcting circuit comprises a junction-type active element, a dual gate MOSFET, an AGC circuit to keep output signal from the dual gate MOSFET at a predetermined level and a correcting voltage applying circuit to convert AGC voltage to a voltage most suitable for linearity correction, so that output signal from the junction-type active element is applied to one of gates of the dual gate MOSFET, and correcting voltage from the correcting voltage applying circuit is applied to the other gate of the MOSFET.

Abstract: An electronic timing circuit to be used in conjunction with photographic cameras using electronic exposure sensing and electrically actuated signal lights responsive to the exposure sensing causes automatic total electrical power shutdown if the camera is left unattended. No separate manual operation is necessary, the shutdown occurring within approximately half a minute after releasing the exposure button. Rundown of the camera battery via inadvertent failure of the operator to turn off the system is eliminated. The timer is turned on and system loads are connected in a latched state to the camera battery by partial depression of the exposure button. Adequate ambient illumination of the subject scene causes a photosensor to actuate a green signal light. Inadequate ambient illumination causes the photosensor to automatically actuate instead a red warning light and a flash tube charging circuit for a built-in flash tube, full charge being evidenced by reappearance of the green light.

Abstract: In a magnetic tape recording/playing device, a reciprocating member control mechanism, in which reciprocating members employed in the channel change mechanism, FF (fast forward)/REW (rewind) mechanism and the like are interlocked with a cam which is driven by a rotary member driven by a tape drive motor, and provided between this rotary member and cam is an idler which is engaged with an electromagnetic plunger which is so arranged as to selectively transmit or shut off the rotation from the rotary member to the cam.

Abstract: A video cipher processing system comprising a detecting means for detecting average tone variation of TV video signals, an extracting means for extracting at random at least some of outputs from the detecting means as a result of the detection and a ciphering means for ciphering video signals by inverting or non-inverting polarities of video signals in response to outputs extracted at random by the extracting means.

Abstract: An indicator mechanism in a pushbutton tuner characterized in that there is provided a front plate horizontally extending from the top end of the tuner casing. The front plate is integrally formed with two-stepped protrusions, the lower one of which is inserted in a central bore of a slidable plate mounted on the front plate so that the slidable plate can pivot about the lower protrusion as an axis. The indicator mechanism further comprising a plate spring having an open rectangular configuration for seizing the front plate between its upper and lower plates. The plate spring is also formed with a through bore in its upper plate for receiving the upper protrusion of the front plate. The front plate is further formed with projections as high as the lower protrusion by which the upper plate of the plate spring is supported.

Abstract: A method for making a cervical contraceptive diaphragm provides for fabricating the entire dome assembly in a separate step, thereafter inserting a toroidal spring within a toroidal chamber pre-formed in a flange affixed to the base of the dome structure, the spring being sealed in by a separate sealing process preferably by a thin filament of vulcanizable rubber laid along the flange away from the spring. Local heating of the filament to cure it and seal the flange about the spring provides for a spring not interpenetrated by liquid elastomer during the curing process, resulting in a free floating spring. The method allows the fabrication of structures employing relatively stiff springs of limited radial compliance, so that the diaphragm may be removed from the first forming mold with minimum loss arising from tearing of the lip.

Abstract: A surface acoustic wave filter in which a surface acoustic wave element is secured on a metallic board integrally formed with coaxial type connectors and the coaxial type connectors and electrodes provided on the surface acoustic wave elements are directly connected by bonding wires.

Abstract: A germicidal periodontal irrigation system employs a stream of irrigating liquid in which bubbles of ultraviolet-produced ozone are finely dispersed. The flow of irrigating liquid through an irrigation conduit carries the ozone bubbles to the inflamed areas to effect a germicidal action. Ozonation of the carrier liquid is produced by passing a gas containing oxygen in the immediate vicinity of an irradiating ultraviolet lamp to produce "actinic" ozone, the gas then being bubbled through a storage reservoir from which the irrigating liquid is continuously drained and dispensed, carrying the ozone bubbles along with it. Alternatively, the ozonated gas is injected directly into the irrigation conduit to form a stream of finely-dispersed bubbles in the flowing liquid. The irrigating stream is preferably dispensed in the form of a high-pressure pulsating jet of liquid injected at the gum line to provide a high local concentration of ozone for germicidal treatment.

Abstract: An improved diagnostic and operative arthroscope is described having an extended eye piece and optical channel, an instrument channel, light source and irrigation channel. The functional channels and light source are secured in parallel and covered by a sheath so as to form a generally oval shape in cross-section, presenting a low profile and enabling the use of the arthroscope with incisions of relatively smaller size.