Abstract: A single phase permanent magnet motor includes a rotor, a stator, and a quadrature axis winding positioned out-of-phase from a main winding of the stator for generating an output signal representative of rotor angular position. An integrator can be coupled to the quadrature axis winding for phase retarding the output signal, and a comparator can be coupled to the integrator for detecting zero crossings of the phase retarded output signal to provide a commutation signal. The quadrature axis winding can be positioned about ninety electrical degrees out-of-phase from the main winding of the stator, and the integrator can be adapted to phase retard the output signal by a number of degrees which decreases as a speed of the motor increases. At low speeds the phase retard is preferably at about ninety degrees so that the phase retarded signal becomes in-phase with the main stator winding back EMF voltage.

Abstract: The process of this invention can be utilized to stabilize tin-coupled rubbery polymers. This process involves adding a chelating diamine or a sodium alkoxide to the rubbery polymer after the tin coupling has been carried out. This invention more specifically discloses a process for improving the stability of a tin-coupled rubbery polymer which comprises adding a sodium alkoxide to the tin-coupled rubbery polymer subsequent to the time at which the tin-coupled rubbery polymer is coupled. Sodium alkoxide is a representative example of a sodium alkoxide that can be used to stabilize the tin-coupled rubbery polymer.

Abstract: A casing includes a hollow rectangular main body with upper and lower walls and front and rear upright walls to define right and left openings, and two pairs of mounting seats fixed to and disposed inboard to the upright walls and extending a longitudinal direction of the upper and lower walls. A retaining member is disposed above the upper wall to define a retaining groove. Each of two side plates has a depressing force transmitting abutment portion extending from an upper edge in a transverse direction thereof, and front and rear lateral abutment portions for abutment with the mounting seats when brought to cover the openings. A cover plate is superimposed on the upper wall, and has a front cover edge and a rear cover edge insertable into the retaining groove.

Abstract: A host signal processor (HSP) modem has a software interface between HSP modem hardware and native audio hardware in a host computer. No hard wire connections between modem hardware and audio hardware are required for synchronization. Instead, a software clock recovery system matches a transfer rate of the HSP modem hardware and a transfer rate of the audio hardware by duplicating or deleting samples. The software interface allows the native audio hardware to make audible the handshaking sequence during modem connections which eliminates the need for a speaker and speaker drivers in the modem hardware. The combination of HSP modem hardware, audio hardware, and software executed by the host computer also allows the HSP modem to perform voice communication such as telephone or speakerphone functions.

Abstract: A semiconductor fabrication method is provided for fabricating a capacitor electrode structure in an integrated circuit such as a DRAM (dynamic random-access memory) device to serve as a data storage capacitor for the DRAM device. According to this method, a self-aligned process is used to form the bottom electrode of each data storage capacitor of the DRAM device. The first step is to form a first insulating layer over the substrate, which is then selectively removed to form contact windows. Next, a plurality of polysilicon plugs are formed in these contact windows, with the top surfaces thereof being below the top surface of the first insulating layer by a predefined depth. After this, sidewall spacers are formed on the sidewalls of the remaining void portions of the contact windows. After bit lines are formed, another insulating layer is deposited and then selectively removed to form electrode-pattern openings to expose the polysilicon plug that is to be connected to the bottom electrode of the capacitor.

Abstract: A telephone circuit is composed of a current circuit, an hybrid circuit, a noise inhibiting unit, and a CAS detector circuit. The current circuit has two input ends connected with tip and ring of the telephone line, and two output ends connected with two input ends of the hybrid circuit. The signal received by two input ends of the hybrid circuit is analyzed. The noise inhibiting unit is connected in series between the hybrid circuit and the CAS detector circuit and is provided with at least one inhibiting circuit which has two input ends connected with the first signal line and the second signal line of the hybrid circuit. The output ends of the inhibiting circuit are connected with two input ends of the CAS detector circuit for minimizing the error of identifying the CAS signal by the CAS detector circuit.

Abstract: A method of improving the planarization of inter-poly dielectric layers. On a semiconductor device on which a poly-silicon layer is formed, by using atmosphere chemical vapor deposition, an undoped inter-poly dielectric layer is formed. A doped inter-poly dielectric layer is formed on the undoped inter-poly dielectric layer. Under a high temperature, reflow and etching back operations are performed for the doped inter-poly dielectric layer. Before a second poly-silicon layer is formed, a rapid thermal process is performed.

Abstract: This invention is a new type of GaInP/AlGaInP for a visible separate-confinement-heterostructure strained quantum well(SCH-S-QW) laser with passive wave guides in the cladding layers. By using this structure, we can significantly improve the transverse beam divergence with only a slight increase of the threshold current. With proper choice of parameters, the transverse beam divergence as narrow as 18.degree.. FWHM can be achieved while the threshold current only becomes 1.12 factor than the lasers without the passive waveguide structure. This type of structure has three advantages:(1) It increases the spectrum dissolution rate between the laser and its optic element to increase the efficiency in actual operation.(2) Smaller oval ratio makes the light beams appears circular, and avoids the problem of non-paralleled focusing in optical instruments. It also eliminates cumbersome non-paralleled focusing in traditional GaInP/AlGaInP, and is more cost efficient.

Abstract: A multiple loop antenna is provided which may be connected to either a transmit circuit, a receive circuit, or a transmit/receive circuit. When powered by a transmit circuit, the antenna generates radio frequency magnetic fields in an area or zone proximate to the antenna, but which are substantially canceled at a distance approximately one wavelength and more from the antenna, thereby defining a surveillance zone proximate to the antenna. Radiating loop segments of the antenna are centered around a common feed point and are geometrically symmetrical, such that currents are precisely controlled in each loop segment. A crossover element electrically connects the loop segments. The crossover element includes a pair of spaced, parallel conductors.

Abstract: This invention reveals an initiator system which is comprised of (a) a lithium initiator, (b) a sodium alkoxide and (c) a polar modifier; wherein the molar ratio of the sodium alkoxide to the lithium initiator is within the range of about 0.05:1 to about 3:1; and wherein the molar ratio of the polar modifier to the lithium initiator is within the range of about 0.25:1 to about 5:1. The subject invention also discloses a process for preparing 3,4-polyisoprene rubber which comprises polymerizing isoprene monomer with a lithium initiator at a temperature which is within the range of about 30.degree. C. to about 100.degree. C. in the presence of a sodium alkoxide and a polar modifier, wherein the molar ratio of the sodium alkoxide to the lithium initiator is within the range of about 0.05:1 to about 3:1; and wherein the molar ratio of the polar modifier to the lithium initiator is within the range of about 0.25:1 to about 5:1.

Abstract: A device for holding and adjusting the opening angle of a door includes a first lever having a forked end with two generally parallel lugs which are respectively provided with substantially aligned first and second pivot holes, and a second lever which has a journal member for insertion into the first pivot hole, the journal member having a threaded hole and a first engagement surface. A first detent member is inserted between the parallel lugs and has a pivot slot aligned with the first and second pivot holes. The first detent member further includes a second engagement surface for engagement with the first engagement surface, and a detent face. A resilient second detent member is mounted inside the first lever inwardly of the forked end to engage the detent face.

Abstract: A multiple loop antenna is provided which may be connected to either a transmit circuit, a receive circuit, or a transmit/receive circuit. When powered by a transmit circuit, the antenna generates radio frequency magnetic fields in an area or zone proximate to the antenna, but which are substantially canceled at a distance approximately one wavelength and more from the antenna, thereby defining a surveillance zone proximate to the antenna. The loop antenna includes a first, upper loop and a second, lower loop. The upper and loser loops lie in separate, spaced, parallel planes and are preferably disposed at a fixed angle with respect to the surveillance zone.

Abstract: A trim phone circuit device is composed of a base portion and a hand set portion which is connected with the base portion by a four-core line. The trim phone circuit device is capable of a calling line identification in view of a bridge rectifier circuit unit which has a positive terminal output capable of providing the telephone circuit with the power source and of reading the calling line information furnished by the phone company. When the bridge rectifier circuit unit of the base portion is turned on all the time to keep a calling line signal in the on-hook state on the phone line, the calling line detection circuit unit of the hand set portion is provided with the calling line signal in a single end input configuration so as to enable the trim phone circuit device to identify the calling line.

Abstract: The subject invention discloses a pneumatic tire having an outer circumferential tread wherein said tread is a sulfur-cured rubber composition comprised of (a) an isoprene-butadiene diblock rubber, said isoprene-butadiene diblock rubber being comprised of a butadiene block and an isoprene-butadiene block, wherein said butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene diblock rubber has essentially one glass transition temperature which is within the range of about -100.degree. C. to about -70.degree. C., wherein said isoprene-butadiene diblock polymer has a Mooney ML-4 viscosity at 100.degree. C.

Abstract: A method for preparing aluminium nitride includes a first step in which a mixture is formed of aluminium powder and ammonium halide powder. The mixture is then molded into a tablet, which is ignited in an airtight chamber containing nitrogen gas. Aluminium nitride is formed of the tablet through the combustion reaction of the tablet. The gas generated in the decomposition of the ammonium halide forms a number of channels in the tablet so as to enable nitrogen gas to enter the tablet to react with aluminium. The synthesis of aluminium nitride of high purity under low pressure is possible in view of the catalytic effect of the ammonium halide.

Abstract: Trans 1,4-copolymers of butadiene and isoprene are provided as blends with other elastomers, including partial replacement of natural cis 1,4-polyisoprene in elastomer compositions. Pneumatic rubber tires with components composed of such elastomer blends, including tire treads, are also included.

Abstract: A frame assembly which can be converted to various shapes to hold different articles. Inner and outer frame members are utilized with the inner frame member serving to hold a panel or flat plate thus forming an enclosure. The frame members are connected to joints to form the frame assembly. With each joint having a U-shaped plate housing a fastening element which attaches to each outer frame member in a snap fit relationship. A screw rod and adjusting bolt enable a detachable connection between the U-shaped plate and the fastening element. Dual fins of the fastening element behind corresponding protruded blocks lying within the outer frame to allow for connection between frame the fastening element.

Abstract: A male mold having a first cavity and a female mold with a second cavity are provided, the first cavity and the second cavity having a contour complimentary to that of a golf club head, a bottom wall defining one of the first cavity and the second cavity having a recess defined therein. An insert piece is inserted into the recess. Molten metal is poured into the first cavity and the second cavity to form the golf club head in which the insert piece is integrally formed with the golf club head.

Abstract: A rotor includes a shaft; a permanent magnet layer; and a retainer comprising a conductive, low magnetic permeability material bound to the rotor shaft. The permanent magnet layer is semi-restricted between the shaft and the retainer. In one embodiment, the magnet layer includes a molded ring magnet. In another embodiment, the magnet layer includes a plurality of magnet segments which can be situated on the rotor in rotor pockets or in a rotor cage. The bond between the retainer and the rotor can be enabled by a cap or by support elements. A high conductivity material can be situated over the retainer with the combination of the retainer and the high conductivity material having a resistivity high enough to minimize space harmonic losses and low enough to minimize time harmonic losses. The high conductivity material can also be applied to induction rotors for excluding high frequency components while permitting penetration of low frequency torque producing fields.

Abstract: This invention relates to a tire having a tread composed of quantitatively silica reinforced rubber composition, with a minor amount, if any, of carbon black where the tread elastomers are primarily composed of coupled styrene/isoprene/butadiene terpolymer with tin or silicon in combination with selected diene-based elastomers.