Abstract: A hairdressing comb for use in tipping treatments. Each tooth comprises a root portion extending away from the comb's main body and a further tooth portion extending away from the root portion, the further portion being spaced from and generally parallel to the comb's main body. The array of teeth may extend from substantially the whole length of the comb's main body, with the body having a channel shape with side flanges so it may be attached to the back of a hairdresser's traditional tail comb.

Abstract: A subscriber unit for controlling transmission power during the establishment of a communication channel utilizes the transmission of a short code during initial power ramp-up. The short code is a sequence which has a much shorter period than a conventional access code. The ramp-up starts from an initial power level which is quickly increased, while repeatedly transmitting the short code until a detection signal is received by the base station. The use of short codes limits power overshoot and interference.

Abstract: A scanner for optically scanning coded symbologies including a signal processing unit for pre-processing the scanned symbology information and a hardware symbology locating unit. An analog signal related to the reflectivity of the different portions of the coded symbology is obtained and is converted to digital gray-scale. The portion of the analog signal which corresponds to the substrate reflectance (absolute contrast) is removed, and the available dynamic range of the analog to digital converter is used only for the information-bearing portion of the signal (relative contrast). Since all of the decodable information is ultimately encoded in binary form, the information-bearing portion of the signal is retained. The hardware symbology locating unit includes a plurality of shift registers, each of which derives a value from an input seed which is based upon the width of a detected coded symbology element. The value of a subsequent input seed is compared to the values generated from a prior input seed.

Abstract: A distortion control circuit for selective modulation of an RF signal including an input port for coupling with an RF signal source, such as a multifrequency CATV signal, and an output port for coupling to an associated electronic device. The distortion control circuit generates new second and third order products from the multifrequency RF signal which are the same magnitude, but opposite in phase to the nonlinear products generated by the electronic device. Since both the original multifrequency RF input signal and the new generated products from the distortion control circuit are coupled to the electronic device, the nonlinear products from the distortion control circuit and the electronic device will be canceled and the output of the electronic device will comprise only the multifrequency RF signal. The distortion control circuit includes a nonlinear circuit having a pair of diodes which are selectively biased to create second and third order distortion products for adding to the input signal.

Abstract: An apparatus for controlling transmission power during the establishment of a channel in a CDMA communication system utilizes the transmission of a short code from a subscriber unit to a base station during initial power ramp-up. The short code is a sequence for detection by the base station which has a much shorter period than a conventional spreading code. The ramp-up starts from a power level that is lower than the required power level for detection by the base station. The subscriber unit quickly increases transmission power while repeatedly transmitting the short code until the signal is detected by the base station. Once the base station detects the short code, it sends an indication to the subscriber unit to cease increasing transmission power. The use of short codes limits power overshoot and interference to other subscriber units and permits the base station to quickly synchronize to the spreading code used by the subscriber unit.

Abstract: A global pilot and unwanted traffic signal canceler for a spread spectrum communication system receiver that reduces their contributive noise effects. The present invention effectively cancels the global pilot and unwanted, active traffic signals prior to decoding a desired traffic signal at the receiver. The system and method decreases the bit error rate (BER) yielding an increased signal-to-noise ratio.

Abstract: A heavy duty steering wheel securing anti-theft device. Embodiments are described herein that also protect any air bag contained in the steering wheel.

Abstract: A system and method of controlling transmission power during the establishment of a channel in a CDMA communication system utilize the transmission of a short code from a subscriber unit to a base station during initial power ramp-up. The short code is a sequence for detection by the base station which has a much shorter period than a conventional spreading code. The ramp-up starts from a power level that is guaranteed to be lower than the required power level for detection by the base station. The subscriber unit quickly increases transmission power while repeatedly transmitting the short code until the signal is detected by the base station. Once the base station detects the short code, it sends an indication to the subscriber unit to cease increasing transmission power. The use of short codes limits power overshoot and interference to other subscriber stations and permits the base station to quickly synchronize to the spreading code used by the subscriber unit.

Abstract: A method of controlling transmission power during the establishment of a channel in a CDMA communication system utilizes the transmission of a short code from a subscriber unit to a base station during initial power ramp-up. The short code is a sequence for detection by the base station which has a much shorter period than a conventional spreading code. The ramp-up starts from a power level that is lower than the required power level for detection by the base station. The subscriber unit quickly increases transmission power while repeatedly transmitting the short code until the signal is detected by the base station. Once the base station detects the short code, it sends an indication to the subscriber unit to cease increasing transmission power. The use of short codes limits power overshoot and interference to other subscriber units and permits the base station to quickly synchronize to the spreading code used by the subscriber unit.

Abstract: A digital spread spectrum communication system employing pilot-aided coherent multipath demodulation effects a substantial reduction in global-pilot and assigned-pilot overheads. The system and method uses a QPSK-modulated data signal whereby the modulated data is removed and the recovered carrier is used for channel amplitude and phase estimation. The resulting signal has no data modulation and is used as a pseudo-pilot signal. In conjunction with the pseudo-pilot signal, a multiple-input phase-locked loop is employed further eliminating errors due to carrier-offset by using a plurality of pseudo-pilot signals. A pilot signal is required to resolve absolute phase ambiguity, but at a greatly reduced magnitude.

Abstract: The invention relates to electrical engineering, in particular, to devices employed in a step magnetoelectric motor, and it is intended for generating the Sin and Cos of electric signals that uniquely determine an armature position relative to toothed structure of a stator. To increase the accuracy the sensor contains two composite U-shaped magnetic conductors, on pole cores of which the teeth are formed. The group coordinates difference of the teeth being equal to (&agr;±0,5) Z, where &agr; is an integer, Z is the teeth spacing and 0,5 represents the decimal notation of ½. A permanent magnet is connected in series with one of the constituents of U-shaped magnetic conductors, and the magnetic induction converters are placed in proximity to the pair of the like magnetic poles of the magnetic conductors.

Abstract: Gear drive (1), for example, a planetary gear drive, having a housing (2) and at least one shaft (4), for example, an output shaft leading through the housing wall (3) toward the outside. For equalization of pressure, a pressure-equalization chamber (5) is positioned in the interior of the shaft (4) and/or a drive part (6) associated therewith and is connected, on the one hand, with the interior of gear drive (1) and, on the other hand, with the external atmosphere, for example, via a borehole (11) running through shaft (4) so that the shaft (4), which has to pass through the housing (2) of the gear drive (1), is employed in equalization of pressure. Located in the pressure-equalization chamber (5) is a membrane (7) that is deformable via pressure differentials. The membrane separates and seals the external atmosphere and the interior of the gear drive from each other.

Abstract: An assembly for preserving and displaying an item of memorabilia in three dimensions including a first planar substrate having an opening adapted to receive a transparent shaped memorabilia enclosure and a second hard transparent layer adapted to be co-extensively adhered to said first substrate. The transparent layer includes an opening that corresponds to the opening in the first substrate. The transparent memorabilia enclosure includes a shaped portion adapted to fit securely within the openings of the first substrate and the second layer and enclose to the item of memorabilia.

Abstract: The components of a hydroforming machine include a die housing for containing a plurality of dies, a water distribution system, and a means for compressing the dies. The dies includes first and second die plates which are secured together by a key inserted into aligned keyways in each of the first and second die plates. The key is non-rotatable, such as being square shaped, rectangular, triangular, or the like for eliminating interference with adjacently positioned keys. The pins and links coupled to the die plates are held in position by keepers, which are elongated narrow pieces of metal positioned substantially parallel with the die plates and having a width approximately equal to the width of the die plates for allowing a person to view between the adjacent dies and into the die housing for observing formation of the bellows during the hydroforming process.

Abstract: Chiral peptide nucleic acids are provided which hybridize strongly with complementary nucleic acids and have potential as antigene and antisense agents and as tools in molecular biology.

Abstract: A spread spectrum phased array receiver has a set of phased array antennas. The set of phased array antennas receive a spread spectrum signal containing a plurality of channels. The receiver outputs timed versions of the received signal. Each timed version is associated with a respective one out of the set of phased array antennas. A plurality of despread signals is produced by despreading each timed version of the received signal using a plurality of chip code sequences associated with the channels. The despread signals are combined as a despread signal. A magnitude of the combined despread signal is determined for obtaining a present and a prior magnitude. The present and prior magnitude are compared. A delay associated with the timed versions is adjusted in response to the comparison so antenna beams are steered towards components of the spread spectrum signal with a highest combined magnitude.

Abstract: A spread-spectrum CDMA communications system for locating remote units, and for communicating message data between a plurality of remote units and a base station. The spread-spectrum CDMA communications system includes a plurality of base stations and a plurality of remote units. A base station has a spread-spectrum modulator for spread-spectrum processing the message data, and a transmitter for transmitting the spread-spectrum processed-message data, combined with a generic-chip-code signal, from the base station to a remote unit. The base station also has an antenna, and spread-spectrum detectors for recovering message-data communicated from the remote units. A remote unit has an antenna, and a detector coupled to the antenna for recovering data communicated from the base station. The detector includes a spread spectrum demodulator. Also, the remote unit has a device for converting the format of the data into a form suitable for communicating over radio waves, a spread spectrum modulator and a transmitter.