Patents Assigned to E
  • Multichannel digital speech synthesizer
    Patent number: 4319084
    Abstract: A multichannel digital speech synthesizer comprises a pulse generator storing periodic and aperiodic excitation signals to be processed in a lattice filter according to weighting parameters, such as gain and reflection coefficients, transmitted from a computer via a control unit and a plurality of input modules assigned to respective output channels. Each input module includes a resettable counter for timing the emissions of periodic or aperiodic excitation signals, to generate a voiced or an unvoiced speech element, and for requesting a new set of parameters from the computer upon detecting the end of a validity interval for a current set of parameters; the module further comprises a pair of buffer memories alternating in reading and writing operations under the control of the counter to ensure a continuous flow of parameter sets to the filter.
    Type: Grant
    Filed: March 14, 1980
    Date of Patent: March 9, 1982
    Assignee: CSELT, Centro Studi e Laboratori Telecomunicazioni S.p.A
    Inventors: Paolo Lucchini, Luciano Nebbia
  • Performance-stabilization system for an electrical component emitting pulsed energy
    Patent number: 4319203
    Abstract: An emitter of unbalanced pulse-modulated energy, specifically a laser, has a feedback circuit including a first branch detecting the mean amplitude of the emitted energy and a second branch detecting the peak amplitude of its pulses. The second branch includes a band-pass filter, centered on the pulse cadence, followed by a peak detector which may comprise a coherent demodulator driven by a square wave whose frequency corresponds to that cadence. The peak detector generates a control signal for a pulse former whose output signals are superimposed upon a biasing signal from the first branch before being fed to the modulating input of the energy emitter.
    Type: Grant
    Filed: August 15, 1979
    Date of Patent: March 9, 1982
    Assignee: CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A
    Inventors: Alberto Brosio, Vittorio Seano
  • Structure for seating means
    Patent number: 4318570
    Abstract: The seat and back of a seating unit are each formed of a plurality of cushioned upholstered elements which extend between a pair of L-shaped support members to provide continuous back and seat surfaces. The L-shaped members have an elliptical cross section which includes two hollow semielliptical portions, a central wall connecting these portions, and two longitudinal channels on opposite sides of the central wall. The upholstered elements are attached to the L-shaped members by plastic guiding strips which ride in the channels.
    Type: Grant
    Filed: September 12, 1979
    Date of Patent: March 9, 1982
    Assignee: Forma S.A Moveis e Objetos de Arte
    Inventors: Adriana Adam, Ana Beatriz M. Gomes
  • Pile-cutting machine and method of cutting multi-sided piles
    Patent number: 4318391
    Abstract: A pile-cutting machine for cutting multi-sided piles, such as square piles, having a frame which can be clamped to the pile at a desired location, a carriage mounted on the frame for movement in a continuous path around the pile and a cutting head carried by the carriage with a power-driven cutter positioned relative to the carriage to be at full cutting depth in a pile as the carriage moves along a straight side of the pile and, thereafter, to automatically withdraw from the pile as the carriage swings in travelling around a corner of the pile and subsequently move to full cutting depth in the pile as the carriage advances along the next straight side of the pile.
    Type: Grant
    Filed: June 2, 1980
    Date of Patent: March 9, 1982
    Assignee: The E. H. Wachs Company
    Inventors: Edward H. Wachs, Horst Kwech
  • Batteries, accumulators and electrochemical generators with non-metallic electrodes or electrodes in solution
    Patent number: 4318968
    Abstract: Batteries, accumulators or electrochemical generators of electric energy, the negative electrode (anode) of which consists of at least one alkaline halide, in aqueous or alkaline solution, or of one metallic halide, and one auxiliary electrode collecting current.The positive electrode (cathode) consists of at least one metallic hydroxide or oxide which can be in solution in the electrolyte and which, preactivated or regenerated continuously by the presence of air or oxygen introduced into the alkaline solution bathing the cathode, supplies the hydroxyl ions necessary for the oxidation of the halide constituting the anode. Furthermore, some compounds of the anode, according to the invention, can be thermally or photonically regenerated.Various applications of these devices, in particular sea water, can be implemented for the supply of electric energy, using easily available and cheap fuel.
    Type: Grant
    Filed: March 11, 1980
    Date of Patent: March 9, 1982
    Assignee: Societe e'Etudes et de Recherches en Sources d'Energie Nouvelles
    Inventors: Michel Berger, Jacques Lys, Georges Demaire
  • Venting process for organic heat transfer media
    Patent number: 4318690
    Abstract: A process for automatically venting noncondensable contaminants from a number of process vessels heated with an organic heat transfer vapor medium involves monitoring the temperature at each vessel and intermittently venting all vessels simultaneously in response to a temperature drop at any one vessel. By venting intermittently for a predetermined period energy is conserved. Equipment costs are minimized by simultaneous venting through a single control valve.
    Type: Grant
    Filed: October 16, 1980
    Date of Patent: March 9, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: William J. Duncan
  • Antiinflammatory 2,3-diaryl-5-[2,2,2-trifluoro-1-(trifluoromethyl]ethyl-1H-pyrroles
    Patent number: 4318917
    Abstract: Antiinflammatory 2,3-diaryl-5-[2,2,2-trifluoro-1-(trifluoromethyl)ethyl]-1H-pyrroles, such as 2,3-bis(4-fluorophenyl)-5-[2,2,2-trifluoro-1-(trifluoromethyl)ethyl]-1H-py rrole, useful for treating arthritis and related diseases.
    Type: Grant
    Filed: May 14, 1981
    Date of Patent: March 9, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Saul C. Cherkofsky, George A. Boswell, Jr.
  • Corrugated plate having variable material thickness and method for making same
    Patent number: 4317350
    Abstract: A corrugated plate is disclosed which has trapezoidal corrugations defined by alternating, side by side, relatively thick corrugation peaks and corrugation troughs and relatively thin, inclined corrugation sides which interconnect edges of adjoining peaks and troughs. A method is also disclosed for corrugating the corrugated plate from flat sheet by providing a flat sheet with spaced apart, longitudinally extending, relatively thick sections which thereafter define the corrugation peaks and corrugation troughs or for forming the thick sections by providing a relatively thin sheet and folding over portions of the thin sheet in the areas which ultimately form the corrugation peaks and corrugation troughs so that the latter are defined by a plurality of staked sheet layers.
    Type: Grant
    Filed: August 8, 1980
    Date of Patent: March 2, 1982
    Assignee: E. W. Sivachenko
    Inventors: Eugene W. Sivachenko, Firoze H. Broacha
  • Coaxial cable trimmer
    Patent number: 4317279
    Abstract: A portable coaxial cable trimmer (10) for trimming coaxial cable (12) with shielding (36), insulation (38), and a conductor (40) comprises a hollow, elongated housing (18) with a laterally disposed port (44). A first bushing (22) is attached to the end of the housing (18) for centering the cable (12). A first cutter (30) is secured in the housing (18) for trimming the insulation (38) and shielding (36) to produce a shaving (42) which is discharged from the housing (18) through a port (44). A second bushing (46), secured in the housing (18), centers the exposed conductor (40) of the trimmed cable (12). A second cutter (48) disposed in the housing (18) rounds and cuts the end of the exposed conductor (40). A device for rotating the housing, such as an air drill or an electric drill (14) can be attached to the cable trimmer (10) for rotating the housing (18) with respect to the cable (12).
    Type: Grant
    Filed: August 21, 1979
    Date of Patent: March 2, 1982
    Assignee: E-Systems, Inc.
    Inventors: Robert R. Smith, Guy H. Tippit
  • Antimicrobial derivatives of 3-(1H-imidazol-1-yl)-2-propen-1-ones
    Patent number: 4317831
    Abstract: Compounds are provided having the structure ##STR1## wherein R.sup.1 is lower alkyl; phenyl-lower alkyl; phenyl; substituted phenyl wherein the phenyl group bears one or two halogen, hydroxy, lower alkyl, lower alkoxy, lower alkylthio, cyano or nitro groups; 5- or 6-membered monocyclic aromatic heterocyclics containing one hetero atom, namely, O, S or N, such as furanyl, pyridinyl or thiophenyl; and substituted heterocyclics wherein any of the above heterocyclics bears one halogen, hydroxy, lower alkyl, lower alkoxy, lower alkylthio, cyano or nitro group;R.sup.2 and R.sup.3 may be the same or different and each may be hydrogen, lower alkyl, halogen, phenyl, or substituted phenyl wherein the phenyl group bears one halogen, hydroxy, lower alkyl, lower alkoxy, lower alkylthio, cyano or nitro group.The above compounds as well as acid-addition salts thereof are useful as antimicrobial agents.
    Type: Grant
    Filed: January 12, 1981
    Date of Patent: March 2, 1982
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: Hans Hoehn
  • Polybutylene terephthalate molding blends
    Patent number: 4317764
    Abstract: A polybutylene terephthalate homopolymer or copolymer molding blend having good impact resistance is obtained by incorporating into the resin a selected organic compound and an ethylene polymer.
    Type: Grant
    Filed: April 10, 1981
    Date of Patent: March 2, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: M. Lana Sheer
  • Method for preparing 10,10-difluoro prostacyclins
    Patent number: 4317906
    Abstract: A method is provided for preparing compounds of the formulae ##STR1## wherein A may be --C.dbd.C-- or --C.tbd.C--, by reducing an epoxy lactone of the structure ##STR2## to form the corresponding epoxy hemiacetal, reacting the epoxy hemiacetal with a silyl compound to form an epoxy silyl acetal, reacting the epoxy silyl acetal with an acetylenic derivative to form a silyl acetal, removing the silyl protecting group to form a hemiacetal, reacting the hemiacetal compound with an appropriate Wittig reagent to form a protected difluoro PGF.sub.2.alpha. type compound, removing the protecting group, reacting the difluoro PGF.sub.2.alpha. with an iodine compound to form an iodoether and reacting the iodoether with a base to form the desired compounds. The compounds may be used, e.g., to prevent the aggregation of blood platelets.Novel intermediates produced in the above method are also provided.
    Type: Grant
    Filed: December 15, 1980
    Date of Patent: March 2, 1982
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: Martin F. Haslanger
  • Benzo-cyclitolamines
    Patent number: 4317910
    Abstract: Compounds having the formula ##STR1## and the pharmaceutically acceptable salts thereof, wherein n is 1 or 2; m is 2, 3 or 4; and R.sub.2 is a tertiary amino group; are intermediates useful in the preparation of compounds having hypotensive activity.
    Type: Grant
    Filed: August 14, 1978
    Date of Patent: March 2, 1982
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Frederic P. Hauck, Joyce Reid
  • Methods for detection of roof leaks and areas or zones of the leakage
    Patent number: 4317996
    Abstract: Methods for detection of the presence or absence of water leaks in building roofs and for tracing any leaks to the zone or area thereof in the roof by applying on all or part of the roof fluorescent dye-containing water, shining a fluorescence-inducing light, e.g., actinic or U/V light, onto the underside of the roof, its support structures, roof-penetrating structures and/or surfaces of walls beneath the roof, tracing the path or paths of fluorescence (if present) along the underside of said roof, and/or roof-penetrating structures, and/or roof support structures, and/or the building wall(s) to or near the point of origin of the area or zone of water leakage through said roof, and optionally applying the fluorescent dye-containing water onto the roof in the form of a spray in a fast-moving air stream or as a water jet or jet-spray to simulate wind-driven rain.
    Type: Grant
    Filed: January 14, 1980
    Date of Patent: March 2, 1982
    Assignee: R. E. Davis Chemical Corporation
    Inventor: Robert E. Davis
  • Method of and device for reducing speech-reproduction irregularities in packet-switching telecommunication systems
    Patent number: 4317195
    Abstract: Two mutually independent clocks at a transmitting node and a receiving node of a routing network in a packet-switching telephone system are correlated by a synchronizing device associated with the receiving node whose processor, at the beginning of voice transmission between the two nodes, decodes a label of an incoming packet to determine its time of departure t.sub.s from the transmitting node whereupon a control unit at the receiving node adjusts the local clock in conformity with an estimated reading t.sub.x of the remote clock. This adjustment takes into account only fixed network parameters determining a minimum transit time for the packets by introducing a basic delay T.sub.d. After the correlation, an initial packet of a sequence representing a period of coherent speech --termed talkspurt--is stored for a time sufficient to augment the basic delay T.sub.d by a supplemental time lag T.sub.
    Type: Grant
    Filed: March 26, 1980
    Date of Patent: February 23, 1982
    Assignee: CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A.
    Inventors: Giulio Barberis, Daniele Pazzaglia
  • Cartridge filter for spin-pack assemblies
    Patent number: 4316711
    Abstract: A cartridge filter is provided in which a powdered filter medium is encapsulated between screens which are sealed to the side wall of the cartridge. The side wall has a flange which engages the upper surface of a holder into which the cartridge fits. The holder is part of a spin-pack assembly in which the cartridge filters fiber-forming material immediately before the material passes through spinneret capillaries and is formed into filaments.
    Type: Grant
    Filed: August 5, 1980
    Date of Patent: February 23, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: James L. Wellborn
  • Multilayer photosensitive element with solvent-soluble layer
    Patent number: 4316951
    Abstract: An improved peel apart photosensitive element for producing duplicate solvent-developed images comprising a strippable cover sheet, a photoadherent layer, a solvent-soluble, nontonable, polymeric nonphotosensitive contiguous layer and a support for photomechanical applications.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: February 23, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Abraham B. Cohen, Roxy N. Fan
  • Mercaptoacyl derivatives of various 4-substituted prolines
    Patent number: 4316905
    Abstract: This invention is directed to compounds of the formula ##STR1## and various intermediates therefore. The final products possess useful hypotensive activity.
    Type: Grant
    Filed: July 1, 1980
    Date of Patent: February 23, 1982
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: John Krapcho
  • High-solids polyester and aminoplast coating composition
    Patent number: 4316940
    Abstract: A curable, high-solids coating composition has film-forming constituents of a low molecular weight hydroxyl-functional polyester based on branched-chain glycols, an epoxy-resin/acid ester, and an aminoplast resin. The composition can be applied at commercially acceptable temperatures and environmentally acceptable solvent levels to form a durable film.
    Type: Grant
    Filed: August 7, 1980
    Date of Patent: February 23, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Glenn D. Thornley
  • Mercaptoacyl derivatives of substituted prolines
    Patent number: 4316906
    Abstract: New mercaptoacyl derivatives of substituted prolines which have the general formula ##STR1## are useful as hypotensive agents.
    Type: Grant
    Filed: October 31, 1980
    Date of Patent: February 23, 1982
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Miguel A. Ondetti, John Krapcho