Patents by Inventor David Boyd

David Boyd has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6257062
    Abstract: An angular accelerometer having a substrate, a plurality of fixed electrodes supported on the substrate and each including fixed capacitive plates, and a rotational inertia mass including a plurality of movable capacitive plates arranged to provide a capacitive coupling with the fixed capacitive plates. The rotational inertia mass is rotationally movable relative to the fixed electrodes in response to angular acceleration. The angular accelerometer further includes support members for supporting the rotational inertia mass and biasing the rotational inertia mass relative to the fixed electrodes during rotational movement of the rotational inertia mass.
    Type: Grant
    Filed: October 1, 1999
    Date of Patent: July 10, 2001
    Assignee: Delphi Technologies, Inc.
    Inventor: David Boyd Rich
  • Patent number: 5957977
    Abstract: An activator device for activation of cardiac tissue having a stint for placement within the interior volume of a natural heart adjacent cardiac tissue thereof. The device also includes a yoke for placement around a portion of the exterior surface of the natural heart in general alignment with the stint and connected to the stint by at least one cord. The device provides a simple yet reliable mechanism for assisting in extended activation of a natural heart with minimal impact and intrusion.
    Type: Grant
    Filed: January 2, 1996
    Date of Patent: September 28, 1999
    Assignee: University of Cincinnati
    Inventor: David Boyd Melvin
  • Patent number: 5757324
    Abstract: An antenna for a land-based, mobile radio communication system, having a reduced size and shape, includes three, flat antenna dielectric panels, each covering one hundred, twenty degrees of azimuth. On each dielectric panel is formed two, interleaved microstrip antenna arrays having narrow vertical beam width. One of the antenna arrays receives signals and the other antenna array transmits signals. The receive array is circularly polarized. The panels are mounted in a triangular configuration about a central mast and a cylindrically shaped radome encloses the dielectric panels.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: May 26, 1998
    Assignee: E-Systems, Inc
    Inventors: Darrell L. Helms, David A. Boyd, Anton S. Gecan
  • Patent number: 5698785
    Abstract: A motion sensor for sensing motion or acceleration of a body, such as the type used in onboard automotive and aerospace safety control system, navigational system or active suspension control system. The motion sensor includes a support frame, a bridge projecting from the support frame, and a proof mass suspended from the support frame by the bridge so as to enable the proof mass to respond to an input force imposed on the motion sensor. The bridge is provided with a strain sensing element that generates an acceleration signal in response to a deflection of the proof mass. The motion sensor further includes a structural feature capable of compensating for mechanically and thermally induced strains imposed on the motion sensor by generating a compensation signal in response to such strains.
    Type: Grant
    Filed: August 7, 1996
    Date of Patent: December 16, 1997
    Assignee: Delco Electronics Corporation
    Inventors: David Boyd Rich, William James Cleaver, Gregory Donald Swanson, Mark Billings Kearney
  • Patent number: 5644378
    Abstract: A method and associated apparatus for initializing a rotatable frame counter in a camera to a preliminary setting from a random setting, in which an engagement element is placed directly on a surface of the frame counter in a ready position to engage and thereby arrest the frame counter when the frame counter is rotated from the random setting to the preliminary setting. According to the present invention, the frame counter is rotated relative to the engagement element to bring an off-axis hole on the frame counter into contact with the engagement element only when the frame counter is at the preliminary setting, whereby the engagement element will arrest the frame counter at the preliminary setting.
    Type: Grant
    Filed: July 25, 1996
    Date of Patent: July 1, 1997
    Assignee: Eastman Kodak Company
    Inventor: James David Boyd
  • Patent number: 5454662
    Abstract: A pipe corral connector consisting of a pair of bolts having corresponding hingedly coupled first ends, and second, threaded ends. The second end of one of the bolts is provided with a right hand thread while the second end of the other bolt is provided with a left hand thread. The threaded ends of the bolts are brought together with a nut that is internally threaded halfway with a right hand thread and halfway with a left hand thread. The nut provides a turnbuckle-like effect in bringing the two bolts together and tightly joining intersecting or parallel pipes of a pipe corral. The connector eliminates all sharp edges which might otherwise injure a corralled horse. The inside surface of the connector bolts may be serrated or notched to provide increased friction at the point of pipe connection. The nut and one of the bolts may be marked to identify matching thread sense to facilitate determination of the correct orientation of the nut.
    Type: Grant
    Filed: November 23, 1993
    Date of Patent: October 3, 1995
    Assignee: Animal Enclosure Systems
    Inventors: Edward P. Skibitzke, David Boyd
  • Patent number: 5076839
    Abstract: Feed mixtures containing one or more platinum group metals are fluorinated to form at least one volatile fluoride product which is separated from the residual solid. Separations of different fluorides may be effected by collecting different fractions of volatile fluorides. Palladium does not form a volatile fluoride and is retained in the residual solid.
    Type: Grant
    Filed: June 12, 1990
    Date of Patent: December 31, 1991
    Assignee: Johnson Matthey Public Limited Company
    Inventors: David A. Boyd, John H. Holloway, Gillian Stanger
  • Patent number: 4972747
    Abstract: An improved perforating strip for use on printing presses formed of an elongated thin metal strip having a base portion of generally rectangular cross-section with flat upper and lower surfaces, the strip having integral upstanding teeth adjacent one edge, the edge of the strip opposite the teeth being curved from the lower surface to the upper surface providing a rounded edge which serves to substantially decrease the impression made in paper against which the strip is pressed, an in one embodiment the strip having an integral anchor portion downwardly extending from the edge opposite the teeth to penetrate the surface of a printing press impression cylinder.
    Type: Grant
    Filed: April 16, 1990
    Date of Patent: November 27, 1990
    Inventors: Harry Boyd, David Boyd
  • Patent number: 4962686
    Abstract: An improved perforating strip for use on printing presses formed of an elongated thin metal strip having a base portion of generally rectangular cross-section with flat upper and lower surfaces, the strip having integral upstanding teeth adjacent one edge, the edge of the strip opposite the teeth being curved from the lower surface to the upper surface providing a rounded edge which serves to substantially decrease the impression made in paper against which the strip is pressed, and in one embodiment the strip having an integral anchor portion downwardly extending from the edge opposite the teeth to penetrate the surface of a printing press impression cylinder.
    Type: Grant
    Filed: May 27, 1986
    Date of Patent: October 16, 1990
    Inventors: Harry Boyd, David Boyd
  • Patent number: 4111956
    Abstract: Process for manufacture of the heterocyclic compounds of the formula: ##STR1## wherein X is cyano, acyl, alkylsulphonyl, arylsulphonyl, optionally substituted alkoxycarbonyl, nitro, phenyl or sulphamoyl, andY is hydrogen, optionally substituted alkyl or optionally substituted aryl, which comprises reacting a compound of the formula: ##STR2## with an acid halide in the presence of a compound of the formula ##STR3## and optionally in the presence of an aprotic solvent, and subjecting the resulting compound of the formula: ##STR4## or an acid salt thereof, to hydrolysis in acidic medium, wherein Z is hydrogen or an optionally substituted alkyl or aryl radical, and R.sup.2 and R.sup.3 each independently representing optionally substituted alkyl, cycloalkyl or aryl radicals, or R.sup.2 and R.sup.3 together form with the nitrogen atom a 5- or 6-membered nitrogen-containing heterocyclic ring.
    Type: Grant
    Filed: January 31, 1977
    Date of Patent: September 5, 1978
    Assignee: Imperial Chemical Industries Limited
    Inventors: David Boyd Baird, James Stanley Campbell, Brian Ribbons Fishwick, Robert David McClelland
  • Patent number: 4108867
    Abstract: The compounds of the formula ##STR1## wherein X is a lower alkylsulphonyl, phenylsulphonyl, cyano, carbonamido, carboxylic acid or carboxylic acid ester group;Y is hydrogen, lower alkyl, phenyl or nitrophenyl; andZ is nitro, cyano or carbonamido.
    Type: Grant
    Filed: May 1, 1974
    Date of Patent: August 22, 1978
    Assignee: Imperial Chemical Industries Limited
    Inventors: David Boyd Baird, Alan Thomas Costello, Brian Ribbons Fishwick, Robert David McClelland, Peter Smith
  • Patent number: 4081435
    Abstract: The disperse monoazo dyestuffs, free from sulphonic acid groups, which are of the formula: ##STR1## wherein X is hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, --NR.sup.1 R.sup.2, --SR.sub.3, chlorine, bromine --OR.sup.3 or --SO.sub.2 R.sup.3 ;Z is hydrogen, alkyl, substituted alkyl, aryl or substituted aryl;Y is hydrogen, nitro, cyano, --COOR.sup.3, --COR.sup.3, --CONR.sup.1 R.sup.2, --SO.sub.2 R.sup.3 or --SO.sub.2 NR.sup.1 R.sup.2 ;E is the residue of a coupling component;R.sup.1 is hydrogen, alkyl or aryl;R.sup.2 is hydrogen or alkyl; andR.sup.3 is alkyl or aryl,A process for the manufacture of the said dyestuffs, and their use for coloring synthetic textile materials.
    Type: Grant
    Filed: September 27, 1976
    Date of Patent: March 28, 1978
    Assignee: Imperial Chemical Industries Limited
    Inventors: David Boyd Baird, Brian Ribbons Fischwick, James Stanley Campbell, Peter Smith
  • Patent number: 4079050
    Abstract: The water-insoluble monoazo dyestuffs, free from sulphonic acid and carboxylic acid groups, which are of the formula: ##STR1## wherein Y is hydrogen, lower alkyl, optionally substituted phenyl or nitro; Z is nitro, cyano, optionally substituted phenyl, optionally substituted lower alkoxycarbonyl or carbonamido; T is hydrogen, optionally substituted lower alkyl or optionally substituted lower alkoxy;W is an acylamino group of the formula: ##STR2## wherein X.sup.1 is hydrogen or lower alkyl, X.sup.2 is hydrogen or an optionally substituted hydrocarbon or heterocyclic radical, and A is a direct link or --0-- or ##STR3## and R.sup.1 and R.sup.2 each independently represent a hydrogen atom or an optionally substituted alkyl radical or R.sup.1 and R.sup.
    Type: Grant
    Filed: February 2, 1976
    Date of Patent: March 14, 1978
    Assignee: Imperial Chemical Industries Limited
    Inventors: David Boyd Baird, Alan Thomas Costello, Brian Ribbons Fishwick, Robert David McClelland, Peter Smith
  • Patent number: 3992410
    Abstract: Process for the manufacture of salts of 2-aminothiophenes having the formula: ##SPC1##Wherein R, X and Y are each independently a hydrogen atom, an alkyl radical or an optionally substituted aryl radical, or a thienyl or furyl radical or either R and X or X and Y together form a chain or methylene groups to form a 5- or 6- membered fused ring system, which comprises treating the corresponding compound of the formula: ##EQU1## with hydrogen sulphide in the presence of an acid and in the presence of an organic solvent, and the use of the said salts as diazo components in the manufacture of azo dyestuffs.
    Type: Grant
    Filed: June 4, 1975
    Date of Patent: November 16, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventors: David Boyd Baird, Brian Ribbons Fishwick, Ian Knowles Barben, John Murray Holland, deceased
  • Patent number: 3935232
    Abstract: A process for the manufacture of the heterocyclic compounds of the formula: ##SPC1##Wherein R is a hydrogen atom or a hydrocarbon radical, which comprises decarboxylating and dinitrating a compound of the formula: ##SPC2##Wherein R has the meaning stated above, and finally hydrolysing off the acyl group, and the use of the said heterocyclic compounds as diazo components in the production of azo dyestuffs.
    Type: Grant
    Filed: October 11, 1974
    Date of Patent: January 27, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventors: David Boyd Baird, Ronald Baker, Brian Ribbons Fishwick, Robert David McClelland
  • Patent number: D426232
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: June 6, 2000
    Assignee: Avicor Digital Imaging Systems
    Inventors: Bryan T. Silbermann, Bradford Dickson Bissell, Gavin Bradshaw, David Boyd
  • Patent number: D433020
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: October 31, 2000
    Assignee: Avicor, Inc.
    Inventors: Bryan T. Silbermann, Bradford Dickson Bissell, David Boyd