Patents by Inventor Scott Hamilton

Scott Hamilton 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: 6170119
    Abstract: A vacuum cleaner head is provided with cutting elements positioned in the air flow path of the vacuum cleaner head to reduce the size of elongate particulate material entering the dirty air inlet.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: January 9, 2001
    Assignee: Fantom Technologies Inc.
    Inventors: Wayne Ernest Conrad, Scott Hamilton
  • Patent number: 6047095
    Abstract: A coplanar waveguide polymeric in-line fiber construct (CPW-PILF) formed on an optic half coupler substrate base or D-fiber wherein the surface is polished down through the cladding on the optical fiber so as to form an evanescent coupling region on the surface. Co-planar, spaced-apart electrodes are deposited on the surface with their gap aligned over the coupling region, and an electro-optic (EO) polymeric waveguide is deposited over the electrodes and between the electrode gap. Light transmitted thorough the optical fiber is evanescently coupled to said waveguide and modulated by a signal applied to the electrodes. Alternatively, the waveguide is deposited on the surface of the substrate and the electrodes are deposited over the waveguide.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: April 4, 2000
    Assignees: The Regents of the University of California, Optical Networks, Incorporated
    Inventors: Andre Knoesen, Diego Yankelevich, Scott A. Hamilton, Nicholas L. Abbott, Richard A. Hill, Gary Bjorklund
  • Patent number: 5859384
    Abstract: There is provided an improved process for preparing a composite propellant comprising (a) a polymeric binder, (b) a bonding agent, (c) a curing agent for the binder, (d) a metallic fuel, and (e) an ammonium salt oxidizer wherein the improvement resides in adding the metallic fuel to the propellant mix after all of the ammonium salt oxidizer has been added to the propellant mix.
    Type: Grant
    Filed: June 20, 1989
    Date of Patent: January 12, 1999
    Assignee: Cordant Technologies Inc.
    Inventors: Roger R. Hendrickson, R. Scott Hamilton
  • Patent number: 5854864
    Abstract: A coplanar waveguide polymeric in-line fiber construct (CPW-PILF) formed on an optic half coupler substrate base or D-fiber wherein the surface is polished down through the cladding on the optical fiber so as to form an evanescent coupling region on the surface. Co-planar, spaced-apart electrodes are deposited on the surface with their gap aligned over the coupling region, and an electro-optic (EO) polymeric waveguide is deposited over the electrodes and between the electrode gap. Light transmitted thorough the optical fiber is evanescently coupled to said waveguide and modulated by a signal applied to the electrodes. Alternatively, the waveguide is deposited on the surface of the substrate and the electrodes are deposited over the waveguide.
    Type: Grant
    Filed: July 16, 1996
    Date of Patent: December 29, 1998
    Assignees: The Regents of the University of California, Optical Networks, Incorporated
    Inventors: Andre Knoesen, Diego Yankelevich, Scott A Hamilton, Nicholas L. Abbott, Richard A. Hill, Gary Bjorklund
  • Patent number: 5747603
    Abstract: Difunctional, hydroxyl-terminated polymers in which the terminal hydroxyl group is non-primary or hindered are end-capped to provide unhindered, primary, terminal hydroxyl groups which promote an improved cure and improved mechanical properties of the cured elastomer. End-capping chemicals have an hydroxyl-reactive group at one end and a group at the other end which is removable to provide a primary, unhindered hydroxyl group. Short-chain, hydroxyl-terminated polymers are chain-extended with a diisocyanate.
    Type: Grant
    Filed: May 19, 1987
    Date of Patent: May 5, 1998
    Assignee: Thiokol Corporation
    Inventors: Jerald C. Hinshaw, R. Scott Hamilton
  • Patent number: 5648556
    Abstract: A nonsolvent process of synthesizing bis(2,2-dinitropropyl)acetal (BDNPA) is disclosed. In the process, 2,2-dinitropropanol (DNPOH) is reacted at low temperature with an acetaldehyde source in the presence of an acid catalyst, such as a Lewis acid catalyst or protic acid catalyst. To inhibit by product formation, the reaction temperature is maintained from about -30.degree. C. to 30.degree. C. Upon completion of the reaction, the reaction solution is quenched with water and washed with an aqueous hydroxide solution. The hydroxide concentration should be sufficient to neutralize any acid formed during the quenching step and to solubilize unreacted 2,2-dinitropropanol as well as other aqueous soluble byproducts in the reaction solution. The BDNPA product is extracted with methyl tert-butyl ether (MTBE) or equivalent solvent. The organic solvent is evaporated to yield usable BDNPA product. The resulting yield is at least 50% based on the starting quantity of 2,2-dinitropropanol.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: July 15, 1997
    Assignee: Thiokol Corporation
    Inventors: R. Scott Hamilton, Robert B. Wardle
  • Patent number: 5579055
    Abstract: A data controller which manages the flow of text and electronic program guide (EPG) information to a cable television viewer. The data controller of the invention receives text and EPG information from one or a plurality of authorized data sources via a communications link, processes the received data in its internal database manager to perform data compression and the like, and then provides this text information to the viewer under control of the head end controller. In a preferred embodiment, the text data is formatted on a screen basis into transactions of a predetermined length and the EPG data is formatted on a program basis into transactions of the same length. The transaction are then inserted into the vertical blanking interval of a channel to which the corresponding text or electronic program data has been assigned.
    Type: Grant
    Filed: June 7, 1993
    Date of Patent: November 26, 1996
    Assignee: Scientific-Atlanta, Inc.
    Inventors: Scott Hamilton, Ray T. Haman, Gregory S. Durden, Jan L. Christensen, Melvin Paulick
  • Patent number: 5554820
    Abstract: A PBAN-based solid rocket motor propellant which includes more than 85% or more solids is provided. Propellants of this nature are possible using the combination of diepoxide curing agents and PBAN as a binder. The curing agents include diepoxides having 4 to about 10 carbon atoms. It has been observed that when a diepoxide curing agent is substituted for conventional curing agents, viscosities are significantly reduced, thus enabling the addition of higher percentages of solids in the propellant formulation. Total solids loading of over 85% are achievable while maintaining end-of-mix viscosities within acceptable ranges.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: September 10, 1996
    Assignee: Thiokol Corporation
    Inventors: Robert B. Wardle, R. Scott Hamilton
  • Patent number: 5547525
    Abstract: Conductive carbon fibrils are incorporated into energetic compositions to reduce electrostatic discharge susceptibility. The carbon fibrils are grown catalytically from carbon precursors and are substantially free of pyrolytically deposited thermal carbon. The fibrils generally have a length in the range from about 1.mu. to about 10.mu. and a diameter in the range from about 3.5 nanometers to about 75 nanometers. Length to diameter aspect ratios are greater than 5, and typically in the range from about 100:1 to about 1000:1. An effective amount of fibrils is included in the energetic compositions to decrease the resistivity to a level below or on the order of about 10.sup.10 ohm-cm. In most cases, fibril concentration will be in the range from about 0.005 to about 0.1 weight percent.
    Type: Grant
    Filed: September 29, 1993
    Date of Patent: August 20, 1996
    Assignee: Thiokol Corporation
    Inventors: S. John Bennett, R. Scott Hamilton
  • Patent number: 5449835
    Abstract: A nonsolvent process of synthesizing bis(2,2-dinitropropyl)formal (BDNPF) is disclosed. In the process, 2,2-dinitropropanol (DNPOH) is reacted at low temperature with a formaldehyde source in the presence of a protic acid catalyst, such as H.sub.2 SO.sub.4, HCl, H.sub.3 PO.sub.4, or HBr. To inhibit byproduct formation, the reaction temperature is maintained from about -30.degree. C. to 30.degree. C. Upon completion of the reaction, the reaction solution is quenched with water and washed with an aqueous hydroxide ion solution. The hydroxide ion concentration should be sufficient to neutralize the protic acid catalyst during the quenching step and to solubilize unreacted 2,2-dinitropropanol as well as other aqueous soluble byproducts in the reaction solution. The BDNPF product is extracted with a low boiling temperature polar organic solvent, such as methyl tert-butyl ether (MTBE) or equivalent solvent. The organic solvent is evaporated to yield usable BDNPF product.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: September 12, 1995
    Assignee: Thiokol Corporation
    Inventors: R. Scott Hamilton, Robert B. Wardle
  • Patent number: 5414123
    Abstract: Polyether organic compounds are described which have both imine and hydroxyl functionality. These materials are synthesized by reacting a primary amine with an aldehyde or ketone to form a Schiff base. By definition, a Schiff base comprises the reaction product of a primary amine and an aldehyde. In this case, however, unlike conventional Schiff bases, the reaction product possesses both hydroxyl and Schiff base functionality. In one embodiment of the invention, such a product is produced by the reaction of a polyoxyalkyleneamine (Jeffamine) with p-nitrobenzaldehyde and glycidol. The result is a polyether having both hydroxyl and Schiff base functionality. The compounds produced in this manner are particularly useful as bonding agents in the formulation of solid propellants. The bonding agents provide superior performance, while avoiding the problems encountered when using existing bonding agents.
    Type: Grant
    Filed: December 23, 1993
    Date of Patent: May 9, 1995
    Assignee: Thiokol Corporation
    Inventors: R. Scott Hamilton, Gary K. Lund, Robert M. Hajik
  • Patent number: 5366572
    Abstract: Oxazolines useful as bonding agents in solid rocket propellants are disclosed. The oxazoline bonding agents are capable of polymerizing in the presence of ammonium perchlorate. The bonding agents of the present invention are added to the propellant in a range from about 0.1% to about 3% concentration. Importantly, there is no increase in ammonia liberated above baseline propellant values and no increase in end of mix viscosities by using the oxazolines according to the present invention which provides substantial processing savings.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: November 22, 1994
    Assignee: Thiokol Corporation
    Inventors: R. Scott Hamilton, Robert B. Wardle, Jerald C. Hinshaw
  • Patent number: 5336343
    Abstract: Vinyl ethers for use as bonding agents in solid rocket propellants are disclosed. The vinyl ether bonding agents are capable of polymerizing in the presence of and around the surface of ammonium perchlorate particles. The bonding agents of the present invention are added to the propellant in a range from about 0.1% to about 3% by weight concentration. Importantly, there is no increase in ammonia liberated above baseline propellant values and no increase in end of mix viscosities by using the vinyl ethers according to the present invention which provides substantial processing savings.
    Type: Grant
    Filed: April 16, 1993
    Date of Patent: August 9, 1994
    Assignee: Thiokol Corporation
    Inventors: R. Scott Hamilton, Robert B. Wardle, Jerald C. Hinshaw