Patents by Inventor Thomas A. Hamilton

Thomas A. 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: 6912278
    Abstract: A call management technique implemented using a call routing engine is described. The technique of the present invention may be used to advantage to implement dialed number translation techniques in a global system connected to different telephone networks.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: June 28, 2005
    Assignee: Cisco Technology, Inc.
    Inventor: Thomas Hamilton
  • Publication number: 20050133685
    Abstract: An auto darkening eye protection device including a shutter assembly, a light sensing circuit, a control circuit and a power source. The shutter assembly is adjustable to a plurality of shade levels. The light sensing circuit senses light from a welding arc and providing an output indicative of the shade level at which the shutter assembly should be operated, the light sensing circuit includes a phototransistor operative to receive the light from the welding arc and produce a phototransistor output representative thereof. The phototransistor output from the phototransistor is used to form the output of the light sensing circuit. The phototransistor is configured for surface mount and has an external base connection connected to the base of the phototransistor. The control circuit is configured to receive the output from the light sensing circuit and provide a drive signal to the shutter assembly responsive to said output.
    Type: Application
    Filed: February 10, 2005
    Publication date: June 23, 2005
    Inventor: Thomas Hamilton
  • Publication number: 20050122440
    Abstract: An auto darkening eye protection device comprising a shutter assembly and a control circuit. The shutter assembly is adjustable between a clear state and a dark state. The control circuit comprises a sensing circuit, a weld detect circuit, and a delivery circuit. The sensing circuit senses incident light and provides an output indicative of the incident light. The weld detect circuit receives the output of the sensing circuit, and enables a dark state drive signal to be delivered to the shutter assembly. The delivery circuit outputs the dark state drive signal to the shutter assembly to switch the shutter assembly from the clear state to the dark state upon enablement by the weld detect circuit. The dark state drive signal includes a high voltage pulse followed by a stable AC waveform. The high voltage pulse is formed by a positive voltage signal and a negative voltage signal.
    Type: Application
    Filed: January 10, 2005
    Publication date: June 9, 2005
    Inventor: Thomas Hamilton
  • Publication number: 20050084088
    Abstract: A distributed telephone answering system has intelligence distributed to a plurality of workstations. Each workstation may connect to a plurality of long distance telephone networks. Also, each workstation is controlled by a central controller. A central resopurce such as a database of call context information may be accessed by each workstatin. A workstation may support one or more human users.
    Type: Application
    Filed: October 4, 2004
    Publication date: April 21, 2005
    Inventor: Thomas Hamilton
  • Publication number: 20050057544
    Abstract: An auto darkening eye protection device comprising a shutter assembly and a control circuit. The shutter assembly is adjustable between a light state and a dark state. The control circuit comprises a sensing circuit, a weld detect circuit, a positive voltage generator, and a negative voltage generator. The sensing circuit senses incident light and provides an output indicative of the incident light. The weld detect circuit receives the output of the sensing circuit, and enables a dark state drive signal to be delivered to the shutter assembly. The positive and negative voltage generators output the dark state drive signal to the shutter assembly to switch the shutter assembly from the light state to the dark state upon enablement by the weld detect circuit. The dark state drive signal includes a high voltage pulse followed by a stable AC waveform. The high voltage pulse is formed by a positive voltage signal and a negative voltage signal.
    Type: Application
    Filed: August 11, 2004
    Publication date: March 17, 2005
    Inventor: Thomas Hamilton
  • Patent number: 6801613
    Abstract: Techniques for associating a call appearance with data associated with the call are provided. In the techniques of the present invention, the association of the call appearance with the data is based upon matching of non-dialed number identification data.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: October 5, 2004
    Assignee: Cisco Technology, Inc.
    Inventor: Thomas Hamilton
  • Patent number: 6690789
    Abstract: In accordance with the present invention, a telephony control fault tolerance technique is provided. In one embodiment of the technique of the present invention, a computer-telephony agent (CTI) workstation is provided with a primary telephony control communication path between primary telephony control mechanism external to the workstation and a telephony application interface (TAPI) process, for use in controlling a telephony device in the workstation, internal to the workstation. In the event of failure of the primary path, a secondary telephony control communication path may be established between the TAPI process and a secondary telephony control mechanism that may be comprised in the workstation.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: February 10, 2004
    Assignee: Cisco Technology, Inc.
    Inventor: Thomas Hamilton
  • Patent number: 6674852
    Abstract: A call management technique implemented using a call routing engine is disclosed. The technique of the present invention may be used to advantage to implement dialed number translation techniques.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: January 6, 2004
    Assignee: Cisco Technology, Inc.
    Inventor: Thomas Hamilton
  • Publication number: 20020123896
    Abstract: A control system for a heating, ventilating or air conditioning HVAC system includes a remote command receiver for receiving HVAC system instructions for the HVAC system; and conditioning HVAC system, including a remote command receiver for receiving HVAC system instructions for the HVAC system; and a control module, including (i) a speech receiving member for receiving speech commands; and (ii) a converter for converting the speech commands to HVAC system instructions; wherein the module is communicated with the receiver for conveying the HVAC system instructions from the module to the receiver.
    Type: Application
    Filed: February 26, 2002
    Publication date: September 5, 2002
    Inventors: Tomas Diez, Mary Jo Dunn, H. Ezzat Khalifa, Christian Netter, Timothy M. Remmers, William Weiss, Felipe Costa, Carlos Rodrigues, Michael Tedone, Thomas Hamilton
  • Patent number: 6417187
    Abstract: 3-(Substituted aryl)-5-{substituted aryl-(alkynyl-aryl)}-[1,2,4]- triazole compounds are useful as insecticides and acaricides. New synthetic procedures and intermediates for preparing the compounds, pesticide compositions containing the compounds, and methods of controlling insects and mites using the compounds are also provided.
    Type: Grant
    Filed: April 13, 2001
    Date of Patent: July 9, 2002
    Assignee: Dow AgroSciences LLC
    Inventors: Vidyadhar Babu Hegde, Scott Jerome Bis, Emilie Chassat Heo, Christopher Thomas Hamilton, Peter Lee Johnson, Laura Lee Karr, Timothy Patrick Martin, Paul Allen Neese, Nailah Orr, Francis Eugene Tisdell, Maurice Chee Hoong Yap, Yuanming Zhu
  • Publication number: 20020019370
    Abstract: 3-(Substituted aryl)-5-{substituted aryl-(alkynyl-aryl)}-[1,2,4]- triazole compounds are useful as insecticides and acaricides. New synthetic procedures and intermediates for preparing the compounds, pesticide compositions containing the compounds, and methods of controlling insects and mites using the compounds are also provided.
    Type: Application
    Filed: April 13, 2001
    Publication date: February 14, 2002
    Inventors: Vidyadhar Babu Hegde, Scott Jerome Bis, Emilie Chassat Heo, Christopher Thomas Hamilton, Peter Lee Johnson, Laura Lee Karr, Timothy Patrick Martin, Paul Allen Neese, Nailah Orr, Francis Eugene Tisdell, Maurice Chee Hoong Yap, Yuanming Zhu
  • Patent number: 5774542
    Abstract: A plastic number plate cover that can be installed from the exterior of the housing faceplate of a public telephone and which is resistant to tampering. The cover includes an envelope-shaped pocket into which a number plate or card is inserted, and opposed cantilever arms each terminating in a tab having a beveled edge. The cover is inserted into a rectangular-shaped recess on the faceplate when the tabs are brought into contact with a recess edge, causing the arms to flex and allowing the beveled edges to slide past the recess edge. The cover may be fixed or removable once installed within the faceplate, depending on the structure of the tabs.
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: June 30, 1998
    Assignee: International Totalizing Systems, Inc.
    Inventors: Leo Francis Casey, David Michael Otten, Thomas Hamilton Warner
  • Patent number: 5666664
    Abstract: A shade for protection of the lower part of a face, formed from a sheet of plastics material and folded so that the shade can when supported by conventional spectacles shade the temples, cheeks and nose areas. The shade has side apertures to allow for spectacle arms to pass through and be adjustably supported in relative height by the spectacles. The shade has a central nose protector with a clip to engage over the bridge of spectacles so as to hold the two parts together.
    Type: Grant
    Filed: January 9, 1995
    Date of Patent: September 16, 1997
    Inventor: David Thomas Hamilton
  • Patent number: 5098082
    Abstract: A sprung wheel 46 for a document drive system comprises an upper elastic member 54, a lower elastic member 52, a separating hub 50 and a rim member 56. Each elastic member 42,54 comprises resilient arms 58 which bear upon the rim member 56 on the inside. As the time member 56 is moved eccentrically from the hub 50, supported on a spindle 48, so the resilient arms exert a restoring force. In the second embodiment, the resilient arms 74 are held on the rim portion 561 as opposed to the hub portion 50. The independence of compression of the upper 54 and lower 52 resilient members commits tilting of the rim portion 56, 561.
    Type: Grant
    Filed: September 24, 1990
    Date of Patent: March 24, 1992
    Assignee: Unisys Corporation
    Inventor: Thomas A. Hamilton
  • Patent number: 5011127
    Abstract: A multiple document detector uses a driven wheel (40) opposed by an idler wheel (44) on a castoring arm (60). The wheels (40,44) each have a coefficient of friction against a document greater than the coefficient of friction of a document against another document. When a sensor (14A,14B) senses the presence of a document (26) a solenoid (70) operates to attract a magnetic slug (58). If only one document (26) is present the idler wheel (44) stays in a preferred position. If two documents are present the solenoid (70) has sufficient force to cause the idler wheel (44) to push one document (26) to slide against another. In doing so the movement of the idler wheel (44) is detected by a microswitch (18) which signals the presence of multiple documents.
    Type: Grant
    Filed: January 17, 1990
    Date of Patent: April 30, 1991
    Assignee: Unisys Corporation
    Inventors: Thomas A. Hamilton, Michael M. Kerrigan, John A. Wilson
  • Patent number: 4904098
    Abstract: A print wheel impact printer in a document encoder comprises a flexible shield (38) made from laminar polyester sheet, the shield (38) having a shielding portion (40) at either end of which is provided a folded portion (44), each folded portion (44) being operative by virtue of non-90 degree fold lines and by virtue of the folds (50,52) forming at least three sides of a polyhedron to support the flexible shielding section distant from the print wheel (14). The shielding portion (44) is maintained tilted relative to the line between the hammer (26) and the print wheel (14) thereby to provide an opening (68) wherethrough the ink ribbon may be passed when an ink ribbon cassette (10) is changed. In operation the flexible shielding portion (40) is moved and carried by the paper (30), driven by the hammer (26), against the ink ribbon (12) and print wheel (14) with the paper (30) protruding through an aperture (42) in the shielding portion (40).
    Type: Grant
    Filed: February 1, 1988
    Date of Patent: February 27, 1990
    Assignee: Unisys Corporation
    Inventor: Thomas A. Hamilton
  • Patent number: 4036426
    Abstract: The interior of a centrifuge is cleaned without disassembly by the steps of flushing the interior of the bowl, introducing a cleaning liquid to the bowl, and rotating the bowl at a low speed in which the centrifugal force and the gravitational force on the cleaning liquid are approximately equal. With this method, the bowl, an axial screw conveyor arranged coaxially within the bowl, and the surfaces of other parts within the bowl are all cleaned by the turbulent body of cleaning liquid. Optionally, the centrifuge bowl may be rotated unidirectionally, or it may be turned for a period of time first in one direction and then for an additional period of time in opposite direction. As a further option, the axial screw conveyor may be rotated at maximum speed differential from the rotational speed of the bowl in order to increase internal turbulence and thereby intensify agitation and scouring by the cleaning liquid.
    Type: Grant
    Filed: February 15, 1974
    Date of Patent: July 19, 1977
    Assignee: Pennwalt Corporation
    Inventor: Thomas Hamilton Little
  • Patent number: D345278
    Type: Grant
    Filed: January 29, 1993
    Date of Patent: March 22, 1994
    Inventors: Teresa Hamilton, Thomas Hamilton
  • Patent number: D387098
    Type: Grant
    Filed: September 5, 1996
    Date of Patent: December 2, 1997
    Assignee: Hasbro, Inc.
    Inventor: Thomas Hamilton
  • Patent number: D391312
    Type: Grant
    Filed: September 5, 1996
    Date of Patent: February 24, 1998
    Assignee: Hasbro, Inc.
    Inventor: Thomas Hamilton