Patents by Inventor Douglas A. Arrell

Douglas A. Arrell 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: 8132710
    Abstract: An assembly (10) that can be both joined and parted by temperature processing. A parting member (20) captured between two members of the assembly exhibits a state change as a function of temperature such that the two members can be joined with a meltable joining material (18) at a joining temperature, operated at an operating temperature lower than the joining temperature, and then separated at a parting temperature higher or lower than the operating and joining temperatures as a result of a parting force caused by the state change of the parting member. In one embodiment, the parting member has a coefficient of thermal expansion higher than a coefficient of thermal expansion of the assembly members such that differential thermal expansion causes the parting member to expand across the interface (16) between the members to generate the parting force.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: March 13, 2012
    Assignee: Siemens Energy, Inc.
    Inventors: Gerald J. Bruck, Douglas A. Arrell
  • Publication number: 20100044417
    Abstract: An assembly (10) that can be both joined and parted by temperature processing. A parting member (20) captured between two members of the assembly exhibits a state change as a function of temperature such that the two members can be joined with a meltable joining material (18) at a joining temperature, operated at an operating temperature lower than the joining temperature, and then separated at a parting temperature higher or lower than the operating and joining temperatures as a result of a parting force caused by the state change of the parting member. In one embodiment, the parting member has a coefficient of thermal expansion higher than a coefficient of thermal expansion of the assembly members such that differential thermal expansion causes the parting member to expand across the interface (16) between the members to generate the parting force.
    Type: Application
    Filed: August 20, 2008
    Publication date: February 25, 2010
    Inventors: Gerald J. Bruck, Douglas A. Arrell