Abstract: This invention pertains to an impact wrench mechanism and a clutch therefor, wherein a motor having an output shaft rotatably drives a carrier member mounted on an axis. Anvil jaw(s) rotatably and coaxially mounted adjacent the carrier member have impact jaw(s) extending radially therefrom. Hammer member(s) having impact jaw(s) for impacting with the anvil jaw(s) is (are) mounted on the carrier member for rotation therewith and for limited linear motion relative thereto in a direction essentially transverse to the axis of rotation to allow the hammer member impact jaw(s) to contact the anvil jaw(s). The line of force of the impact blow has a force component tending to urge the hammer member(s) out of engagement with the anvil jaw(s), but the hammer member(s) have a mass and a mass center location such that linear inertial force is created which prevents motion of the hammer member(s) during the impact blow.

Abstract: This invention pertains to a rotary impact tool and a clutch therefor, wherein a motor drives a carrier cage or member within which is pivotally mounted one or more swinging hollow hammer members. An output shaft extends through the carrier member and through the hollow hammer member and includes forward and reverse impact anvil surfaces. The hammer member is, or members are, mounted to swing in respect to the carrier member as the hammer member(s) rotate(s) with the carrier member, and carries forward and reverse impact jaws on its internal surface. As the clutch is driven in the forward direction by an air motor or the like, the forward impact jaw is moved in and out of the path of the anvil jaw on the output shaft by cam action, and during an impact blow the inertia of the rotating hammer member(s) act automatically to hold the impact jaw in engagement with the anvil jaw.

Abstract: A parallel hybrid drive system for self propelled vehicles including a direct current motor-generator having a drive shaft in common with an internal combustion engine leading to a variable speed transmission and a final drive train. The motor-generator has a no-load speed, established by a separate field exciter, below which it drives the shaft as a motor and above which it is driven by the shaft as a generator. Storage batteries are operatively connected to the motor-generator to supply power to it below the no-load speed. The internal combustion engine operates over a small RPM range around its most efficient speed at a power level established by a fixed throttle setting. The transmission is operatively connected to an accelerator and direction selector switch to vary the speed and direction of the vehicle.

Abstract: A polished ceramic substrate is provided with an insulation layer of silicon monoxide (SiO), over which a nickel metal thin-film is laid down in a spiral or serpentine pattern, taking up a desirably small area, but at the same time giving a high electrical resistance. Finally, a cover or protective layer of silicon monoxide is then deposited over the resistor, serving to protect it from the possibility of outside contamination.

Abstract: A pen recorder driving mechanism for deflecting a recorder pen on a writing medium in response to electrical input signals is disclosed. The improved pen recorder driving mechanism includes a novel laminar coil assembly rotatably mounted in a precision air gap between a permanent inner core magnet and a highly permeable outer shell. The coil assembly comprises a coil frame having an inner frame around which the windings of a driving coil are wound and an outer frame overlayered on the windings and the inner frame. The coil frame laminations are rigidified by a bonding material applied to the windings during their assembly. The coil frame is subsequently shaped into a generally rectangular concave convex configuration by stretching the laminations during manufacture with a forming tool. Half shafts and end pieces are attached to the transverse legs of the coil frame after shaping to define the rotational axis of the coil assembly and to provide a mounting structure.

Abstract: A sensor developing a digital output in response to force induced deflection in which the deflection is of a beam formed to have, under stress, a surface undulate in both compression and tension. The signal is developed from piezoelectric transducers connected in a pair of oscillator circuits utilizing surface acoustic wave paths through, respectively, the tension and the compression portions of the beam surface. The frequencies of the oscillators are compared and the frequency difference resulting from beam deflection is sent as a signal to a counter to give a digital read out of the force causing the deflection. The beam is formed of steel and the piezoelectric surface for the surface waves and the interdigitated conductors forming the transducers are deposited by thin film techniques on the beam.

Abstract: A graphic recording technique is disclosed for the enlargement of a relief configuration. A micro-stylus is used to scan the configuration laterally while measuring vertical irregularities in the surface; and a recorder stylus is synchronized therewith to record the scan. A series of scans are provided where each successive scan is offset from the previous scan to produce a topographical representation of the relief configuration from the recorder stylus. Vertical movements of the micro-stylus along the surface of the relief configuration are reproduced by the recorder stylus as movements on the ordinate axis in combination with the scan offset thus producing a two dimensional graphical display of a three dimensional relief configuration. Hidden contours of the relief configuration are accurately suppressed by causing the recorder stylus to stop recording at the boundary of a previously written scan area and to begin recording once the previously recorded area has been departed.

Abstract: Pulsed droplet ejecting systems are described of the type in which a conduit conducts liquid from a reservoir to an orifice. The liquid is under zero or slightly negative pressure, and surface tension in the orifice prevents flow in the absence of other forces. An electroacoustic transducer is coupled to the liquid and when an electric pulse is applied a pressure wave travels in the liquid to the orifice causing ejection of a droplet of liquid. Systems of this type work well only when free of entrapped air, a condition difficult to achieve in prior art designs. Means are disclosed for readily and reliably filling such systems without entrapment of air pockets. A second conduit is permanently or temporarily joined to the first conduit adjacent to or in place of the orifice, and means are provided for temporarily causing rapid flow of liquid from the reservoir through the first conduit into and through the second conduit.

Abstract: This invention pertains to an ultraviolet light generator which mixes, or frequency doubles, light by means of a borate crystal such as AB.sub.5 O.sub.8.4H.sub.2 O where A=Ammonium (NH.sub.4), Potassium (K), Rubidium (Rb), or Cesium (Cs). This ultraviolet light generator is pumped with a dye laser capable of emitting coherent light of wavelengths from 4000 to 5600 A (Angstroms) to generate phase matched second harmonics between about 2150 A and 2650 A, a range not readily attained by systems using other crystals.