Patents Assigned to E
  • Rubbish and refuse incinerator
    Patent number: 4285282
    Abstract: An incinerator and method for burning both sorted and unsorted rubbish and refuse cleanly and efficiently. Rubbish is inserted in a non-clogging hopper where it is preheated and preliminarily combusted as it moves downwardly to a primary combustion chamber where air is added. A moving grate beneath the primary combustion chamber draws ashes and uncombusted materials downwardly away from that chamber. Gases of combustion are further combusted as they are drawn by the natural draft in the incinerator through a secondary combustion chamber and gas circulating and flyash collecting chamber before exiting through an exhaust. The natural draft through the incinerator is controlled by a series of movable baffles and doors.
    Type: Grant
    Filed: September 14, 1979
    Date of Patent: August 25, 1981
    Assignee: Russell E. Stadt
    Inventor: Lewis D. Good
  • Process for the preparation of monodisperse photographic silver halide emulsions of improved sensitivity
    Patent number: 4286055
    Abstract: The speed of monodisperse photographic emulsions made by balanced doubled jet precipitation and converted into a AgBr and/or AgBrI emulsion is increased by ripening in the presence of sulfur compounds at a pH between 8 and 9.5.
    Type: Grant
    Filed: March 3, 1980
    Date of Patent: August 25, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ralf-Udo P. Forster, Rolf H. F. Metzger
  • Self-watering planter
    Patent number: 4285164
    Abstract: A self-watering planter having a base divided into two compartments, one for soil and one for water, separated by a divider wall. A wick extends from the water compartment over the divider wall into the soil compartment. A common upper rim encircles both compartments and a cover which defines a single compartment is seated on the rim, so that the cover forms with the base an enclosed space communicating with both lower compartments. Thus evaporation from either lower compartment is recycled. The lower surface of the cover top wall can be dimpled to distribute condensate more evenly over the plants.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: August 25, 1981
    Assignee: A. E. McKenzie Co. Ltd.
    Inventor: William A. Moore
  • Apparatus for stripping a cover sheet
    Patent number: 4285759
    Abstract: An apparatus for stripping an adherent cover sheet from a photosensitive film sandwich. A leader from a roll extends over a film having a cover sheet and is attached to an edge of the cover sheet. When the roll is driven, the leader wraps on it and strips the cover sheet from the film which had previously been fixed in a stationary position.
    Type: Grant
    Filed: November 19, 1979
    Date of Patent: August 25, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Richard B. Allen, Thomas E. Patten
  • Wideband digital frequency discriminator and phase and frequency detector
    Patent number: 4286223
    Abstract: A wideband digital discriminator for demodulating an FM signal is disclosed. An incoming FM signal cycles a counter through a series of sequential nonambiuous cyclical states. A timer is provided for producing a reference signal having a known relationship to the center frequency of the FM signal. First and second latches, synchronous with the timing means, are provided for sampling and storing information about the present and immediately preceding output states of the counter. A detector, operated synchronously with the reference signal, detects differences in magnitude and direction between the present and immediately preceding sampled states of the counter and generates an output signal when a state difference is detected. The output signal can be digitally processed or integrated over time to provide an analog discriminator output.
    Type: Grant
    Filed: September 26, 1979
    Date of Patent: August 25, 1981
    Assignee: E-Systems, Inc.
    Inventor: Harry D. Shearer
  • Rotor for sedimentation field flow fractionation
    Patent number: 4285809
    Abstract: A long, thin annular belt-like channel is designed for use in sedimentation field flow fractionation. The channel has a generally rectangular cross section and a width to thickness aspect ratio lying in the range of 3-50 to 1. The channel may be formed of a flattened capillary tube. The ratio of the thickness of the channel to the characteristic height of the particles to be separated is greater than 5 to 1.
    Type: Grant
    Filed: February 29, 1980
    Date of Patent: August 25, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Charles H. Dilks, Jr., Joseph J. Kirkland, Wallace W. Yau
  • Scissor-type shear, especially a cable cutter
    Patent number: 4283851
    Abstract: A shear or like scissor-type tool, especially an electric cable cutter, having two blades at least one of which is movable and a pivot about which this blade moves in a scissor-type action. The device is provided with a mechanism for increasing the pressing force at the blade pivot in response to the instantaneous cutting resistance with this pressing force on the blades being relieved upon or prior to opening of the cutter.
    Type: Grant
    Filed: November 28, 1979
    Date of Patent: August 18, 1981
    Assignee: Baudat E. Wolter KG
    Inventor: Eckhard Wolter
  • Method and apparatus for tomographic examination of an object by penetrating radiation
    Patent number: 4284895
    Abstract: Apparatus and method for the tomographic examination of planar sections of an object is disclosed which includes a plurality of sources spaced about an object at fixed intervals which emit a set of planar beams of penetrating radiation, such as X-rays or gamma rays, through a planar section of the object and a plurality of self-collimating detector arrays positioned to receive only photons of radiation which pass through the planar section of the object from the source directly opposite the array. The sources and detector arrays are mounted on a mounting apparatus to prevent movement relative to each other. Each of the detector arrays includes a plurality of self-collimating detectors which count the number of individual primary radiation photons passing through the object along the path from the source to the detector without absorption or deflection.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: August 18, 1981
    Assignees: Ira Lon Morgan, E. C. George Sudarshan
    Inventors: Ira L. Morgan, E. C. George Sudarshan, Alvin L. Mitchell, James P. Coose, Hunter D. Ellinger, James W. Jagger
  • Rotor for sedimentation field flow fractionation
    Patent number: 4284497
    Abstract: A long, thin annular belt-like channel is designed for use in sedimentation field flow fractionation. This channel, which may be the rotor of a centrifuge, is designed to maintain its thickness dimension constant by forming the radially inner wall with a radial thickness that is about balanced by the centrifugal pressure of fluid in the flow channel.
    Type: Grant
    Filed: February 29, 1980
    Date of Patent: August 18, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John W. Grant
  • Apparatus for field flow fractionation
    Patent number: 4284498
    Abstract: A long, thin annular belt-like channel is designed for use in sedimentation field flow fractionation. This channel, which may be contained in the rotor of a centrifuge, has a generally rectangular cross-section. It has an inlet positioned to introduce particulates (includes particles and/or macromolecules) approximately at the radial distance from the outer wall that is the equilibrium distance resulting from the average force field exerted on each particulate by the centrifugal force field and by the opposing normal diffusion forces due to Brownian motion. An outlet for the channel is similarly located. A modified design tapers the inlet and outlet.
    Type: Grant
    Filed: February 29, 1980
    Date of Patent: August 18, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John W. Grant, Joseph J. Kirkland, Wallace W. Yau
  • Imaging systems
    Patent number: 4284950
    Abstract: In a medical NMR apparatus it is desirable that the axial magnetic field, Ho, is uniform. The result can in theory be obtained by accuracy of construction but in practice this cannot readily be achieved. It is now proposed to use a field sensing probe system which indicates the value of that field at a plurality of positions in the examined region and provides error signals indicating deviations from uniformity. The field is automatically corrected in response to the error signals by applying currents to field correcting coils. The errors may be considered as distinct gradient and dishing errors which are corrected individually.
    Type: Grant
    Filed: June 15, 1979
    Date of Patent: August 18, 1981
    Assignee: E M I Limited
    Inventors: Michael Burl, Hugh Clow, Colin G. Harrison, Ian R. Young
  • Welding torch
    Patent number: 4284873
    Abstract: A torch for welding, cutting or heating comprises a torch housing which has a front end portion which is provided with an outlet which faces towards an object to be treated. Heat is created at the outlet for operation of the torch, which results in development of fumes and heat at the front end portion of the housing. A cooling medium is so circulated through the housing as to cool the front end portion thereof and remove the fumes developed at the front end portion.
    Type: Grant
    Filed: May 22, 1979
    Date of Patent: August 18, 1981
    Assignee: E. Schluter Fachhandel fur Schweisstechnik
    Inventor: Jurgen Schluter
  • Mixed disulfides
    Patent number: 4284624
    Abstract: This invention is directed to compounds of the formula ##STR1## wherein A and A.sub.1 are amino acid residues, X is and .alpha.-imino acid residue, and R.sub.1 is hydrogen, lower alkyl, or halo substituted lower alkyl. These compounds are useful as hypotensive agents.
    Type: Grant
    Filed: May 2, 1980
    Date of Patent: August 18, 1981
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Sesha I. Natarajan, Miguel A. Ondetti, Shih-jung Lan, Keith K. Wong
  • Hydroxamic acid derivatives of mercaptoacyl amino acids
    Patent number: 4284561
    Abstract: Hydroxamic acid derivatives of certain mercaptoacyl amino acids inhibit the conversion of angiotensin I to angiotensin II in mammals and are useful for the treatment of hypertension.
    Type: Grant
    Filed: December 3, 1979
    Date of Patent: August 18, 1981
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Edward W. Petrillo, Jr., Miguel A. Ondetti
  • Amino acid derivatives
    Patent number: 4284779
    Abstract: New substituted acyl derivatives of amino acids which have the general formula ##STR1## are useful as angiotensin converting enzyme inhibitors.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: August 18, 1981
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Miguel A. Ondetti, Michael E. Condon
  • Surfactant foams and their use
    Patent number: 4284601
    Abstract: Aqueous foam compositions comprising water and a mixture of ammonium lauryl sulfate, methyl polyoxyethylene cocoamine chloride, dimethyl cocoamine oxide and polyvinyl alcohol are used to suppress the formation of fumes from fumable materials by covering the material with said compositions in the form of foam, thereby causing the material to react with the water to prevent fume release.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: August 18, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Dong M. Chay, David J. Haack
  • Amino acid derivatives
    Patent number: 4284780
    Abstract: New substituted acyl derivatives of amino acids which have the general formula ##STR1## are useful as angiotensin converting enzyme inhibitors.
    Type: Grant
    Filed: May 1, 1978
    Date of Patent: August 18, 1981
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Miguel A. Ondetti, Michael E. Condon
  • Hot melt adhesive composition
    Patent number: 4284542
    Abstract: Hot melt adhesive and sealant compositions based on alkali metal ionomers of random copolymers of ethylene, methyl acrylate, and one or more carboxylated monomers have improved high temperature viscosity stability when the composition contains 0.05-10 phr of ammonium polyphosphate.
    Type: Grant
    Filed: April 7, 1980
    Date of Patent: August 18, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Richard J. Boyce, Terence A. Cooper
  • Radiation crosslinkable polyesters and polyesterethers
    Patent number: 4284710
    Abstract: Solvent-soluble polymeric esters and polymeric esterethers with radiation-crosslinkable ethylenic unsaturation in the linear polymeric structure, and recurring pendant hydroxyl groups, are derived from monomers which include diepoxides and monomers with at least one .alpha.,.beta.-unsaturated carboxylic acid group. These polymeric products react with cyclic anhydrides to form aqueous alkaline-soluble polymers which are useful as films for photomechanical processes, including lithographic applications and as photoresists.
    Type: Grant
    Filed: May 1, 1980
    Date of Patent: August 18, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Marion Burg
  • Antibacterials: 1-difluoromethyl-6,7-methylenedioxy-1,4-dihydro-4-oxo-3-quinolinecarboxy lic acid and its esters
    Patent number: 4284777
    Abstract: 1-Difluoromethyl-6,7-methylenedioxy-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid and certain of its alkylaminoalkyl esters, useful in treating bacterial infections in mammals.
    Type: Grant
    Filed: February 14, 1980
    Date of Patent: August 18, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Kyu T. Lee