Abstract: A hand-held portable lawn and garden tool having implements. A housing encloses a motor and at least two sets of gears arranged in cascade to provide low speed and high torque to the implements. Each set of gears is a sun gear with a plurality of planetary gears. Embodiments energized by battery packs, line power and internal combustion engines are disclosed.

Abstract: A hand-held portable lawn and garden tool having implements. A housing encloses a motor and at least two sets of gears arranged in cascade to provide low speed and high torque to the implements. Each set of gears is a sun gear with a plurality of planetary gears. The tool may be energized by battery packs, line power or internal combustion engines.

Abstract: A communication system (100) is provided for transmitting data to mobile receivers utilizing a subcarrier within a commercial FM channel of a radio station (55). The data transmitted is first encoded in encoder (112), utilizing a forward error correction code. The sequence of the encoded data is altered in interleaver (116), subdivided into a plurality of subframes, in framing and synchronization circuit (120), which also adds channel state bits to each subframe. The framed data is modulated onto the subcarrier in the differential quadrature phased shift keying modulator (130), the output of which is coupled to the FM modulator (52) of radio station transmitter (50). The transmitted radio frequency signals may be received by a vehicle antenna (12) for coupling to the vehicle's FM receiver (80). The modulated subcarrier is recovered from the FM demodulator (84) of the receiver (80), the modulated subcarrier being demodulated to recover the encoded digital data therefrom.

Abstract: A three-point hitch furrow sweep and trash shredder are positioned with the furrow sweep being centered over the furrows for moving stalks onto the ridges where they are acted upon by the shredders. The shredders include a rotor in a housing having a plurality of pivotal hammers which work upon the trash and drive the trash through a perforated screen which reduces the size of the trash particles and returns it to the ground. The furrow sweeps include a pair of coulters in back to back oppositely facing relationship centered over the center line of the furrows or a single coulter for each furrow. The counters may be staggered or positioned in back to back relationship and may be flat or concave in shape.

Abstract: The rotor of an electrical motor, such as a hybrid permanent magnet stepping motor or a variable reluctance motor is assembled on a rotor shaft, and includes at least one lamination stack and a pair of supporting bearings, with the outer diameter of the bearings being slightly larger than that of the lamination stack. A stator is assembled from a stator lamination stack including a pole configuration and a pair of unmachined end caps registered and secured to the lamination stack such as by thru bolts. The registered stator assembly is potted to unitize the assembly, fixing the relationship between the end caps and the lamination stack, and providing a smooth continuous bore through the center of the stator assembly. The thus potted assembly is machined as by diamond lapping to form a continuous bore accurately machined through the center of the stator, concurrently forming bearing surfaces in the end caps and an intermediate machined section in the lamination stack.

Abstract: A portable apparatus adapted for use in filling chuck holes in paved surfaces with a sulphur-based material that has been heated to a plasticized condition. The apparatus includes an electrically heated furnace in which an auger is mounted for the purpose of moving a sulphur-based material through the furnace at a controlled rate (e.g., about 2 feet per minute), such that the material will be elevated to a temperature of above 305 degrees Farenheit (the melting point of sulphur) to produce a tenacious filler material. The furnace is heated by tubular resistance heaters that are bent in a spiral fashion around a mandrel, so that they may be placed in intimate contact with the exterior of a tube which constitutes the core of the furnace. The furnace is fed by a hopper that is mounted above the entry point for the auger, so that dry material may be fed--by gravity--into the furnace whenever a gate-valve mechanism is opened.

Abstract: A method of fabricating an electrical motor, such as a hybrid permanent magnet stepping motor or a variable reluctance motor. A rotor is assembled on a rotor shaft and includes at least one lamination stack and a pair of supporting bearings, with the outer diameter of the bearings being slightly larger than that of the lamination stack. A stator is assembled from a stator lamination stack including a pole configuration and a pair of unmachined end caps registered and secured to the lamination stack such as by thru bolts. The registered stator assembly is potted to unitize the assembly, fixing the relationship between the end caps and the lamination stack, and providing a smooth continuous bore through the center of the stator assembly. The thus potted assembly is then machined as by diamond lapping to form a continuous bore accurately machined through the center of the stator, concurrently forming bearing surfaces in the end caps and an intermediate machined section in the lamination stack.

Abstract: The coil winding machine (10) winds a series of interconnected coil bundles within winding forms (28). The winding forms are transferred from a coil winding station (29), at which the coil is wound in the pie-shaped cavity of the winding form, to a coil removal station (237,293,61), at which the winding form is separated and the coil is removed and placed on a storage arbor (54) in the proper order for later assembly in a transformer, and finally, after reassembly of the winding form, back to the winding station.

Abstract: A universal vibratory feeder has a removable tray provided with a continuous serpentine path. A plurality of carriers are received in the path, and articles of manufacture are carried by the carriers around the path in the tray. A vibrating platen beneath the tray has a plurality of bristles engaging the bottom of the respective carriers. The bristles are oriented in the direction of travel of the carriers around the path. The path in the tray is formed by a continuous through opening which separates the tray into two portions. The carriers straddle the thickness of the tray and are in substantial abutting relationship to one another throughout the path, thereby precluding the tray portions from separating.

Abstract: A signal synchronization system is disclosed which samples an incoming stream containing binary information at a sampling rate which is an integral multiple of the bit information rate. This system correlates the sequences of the sampled bit pattern with a predetermined sequence to produce a measure of the dissimilarity between the sampled and the predetermined sequences. Synchronization of a local sampling clock with the incoming binary information is achieved by making phase adjustments to the local sampling clock which are functions of both the magnitude of dissimilarity and the time of measurement.