Patents by Inventor David J Stevenson

David J Stevenson 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: 11449929
    Abstract: A method and system of executing an online auction is presented. The system includes broker/agent-designed auction interfaces that have property listings, and displays select ones of the property listings from multiple brokers on a multi-tenant auction list user interface. Each of the property listings on the auction list user interface includes a link which, upon activation, launches the broker-designed auction interface where bids may be submitted.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: September 20, 2022
    Assignee: PFX Inc.
    Inventors: David R. Stevenson, Kielo K. Stevenson, Harri J. Salomaa
  • Patent number: 7283555
    Abstract: A method and apparatus for determining a time interval for periodically polling a device on a network 1 is described. The method determines the most restrictive link on the path to the network device, the level of restrictiveness of a link being dependent on the nature of the link, such as the link speed and link type. The time interval between polling is determined based on the nature of the most restrictive link. Thus, the time interval can be determined according to the type and speed of the links between the polling device, which in a preferred embodiment is a network management station, and the polled device on the network 1.
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: October 16, 2007
    Assignee: 3Com Corporation
    Inventors: Robert J. Duncan, Christopher R. Linzell, David J. Stevenson, Iain Hogg
  • Patent number: 7010588
    Abstract: In a network of managed devices, a method of processing network events to reduce the number of events to be displayed in an event log, comprising receiving information relating to network events, passing information regarding a network event to an event processor, determining if the information passed to the event processor relates to a type of event processed by that event processor, and if it is of such a type, processing said information if information on a related event has already been received by that event processor. The method also includes passing said information on to a further event processor if the information received does not relate to a type of event processed by said first event processor. A set of event processors for carrying out the method is described together with a computer program, or a program on a computer readable medium loadable into a digital computer, or embodied in a carrier wave, which computer program operates in accordance with the method.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: March 7, 2006
    Assignee: 3Com Corporation
    Inventors: Hamish D S Martin, David J Stevenson, Robert J Duncan, Christopher R Linzell
  • Publication number: 20030169761
    Abstract: A method and apparatus for determining a time interval for periodically polling a device on a network 1 is described. The method determines the most restrictive link on the path to the network device, the level of restrictiveness of a link being dependent on the nature of the link, such as the link speed and link type. The time interval between polling is determined based on the nature of the most restrictive link. Thus, the time interval can be determined according to the type and speed of the links between the polling device, which in a preferred embodiment is a network management station, and the polled device on the network 1.
    Type: Application
    Filed: June 25, 2002
    Publication date: September 11, 2003
    Inventors: Robert J. Duncan, Christopher R. Linzell, David J. Stevenson, Iain Hogg
  • Publication number: 20020120736
    Abstract: In a network of managed devices, a method of processing network events to reduce the number of events to be displayed in an event log, comprising receiving information relating to network events, passing information regarding a network event to an event processor, determining if the information passed to the event processor relates to a type of event processed by that event processor, and if it is of such a type, processing said information if information on a related event has already been received by that event processor. The method also includes passing said information on to a further event processor if the information received does not relate to a type of event processed by said first event processor.
    Type: Application
    Filed: July 2, 2001
    Publication date: August 29, 2002
    Inventors: Hamish Donald Stuart Martin, David J. Stevenson, Robert J. Duncan, Christopher R. Linzell
  • Patent number: 4446990
    Abstract: A device for spraying a noxious powder includes a housing for a CO.sub.2 cartridge, and a moveable barrel which carries a firing pin by which the cartridge can be punctured to explosively release the gas. The barrel has a nozzle at its outer end, and contains the noxious powder in a chamber defined between the barrel and the firing pin. When the barrel is released from an outwardly extended position it is thrust by a spring against the rupturable end of the cartridge, thereby releasing the gas which in turn propels the active agent through the nozzle and toward the assailant at whom it is aimed. Generally, a powdered tear gas will be employed in the device.
    Type: Grant
    Filed: April 3, 1982
    Date of Patent: May 8, 1984
    Assignee: David J. Stevenson
    Inventors: David J. Stevenson, Robert E. Domian
  • Patent number: 4324133
    Abstract: A torque measuring device is disclosed wherein a torque of a rotating member rotating about an axis is measured. The device includes a support member which is attached to a fixed object such as a stationary frame by at least two linkage arms. Each linkage arm is pivotably attached at a first point of attachment to the fixed object and at a second point of attachment to the support member. The relative positioning of the rotating member, the support member, and the linkage arms is such that geometrical lines interconnecting the respective first and second points of attachment of each linkage arm substantially intersect the axis of the rotating member. The rotating member is in an operative relationship with the support member so that the rotating member during its rotation imparts a force to the support member, which attempts to rotate the support member.An instantaneous center of rotation of the support member coincides with the axis of rotation of the rotating member.
    Type: Grant
    Filed: May 16, 1980
    Date of Patent: April 13, 1982
    Assignee: Clayton Manufacturing Company
    Inventor: David J. Stevenson