Patents by Inventor Allen L. Gummer

Allen L. Gummer 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).

  • Tamper-resistant brake actuator
    Patent number: 5433138
    Abstract: The present invention provides a tamper-resistant fluid-operated brake actuator having a power spring housed within a head or cap which is attached to a flange case having one or more diaphragms or pistons responsive to changes of fluid pressure within the brake actuator chambers. In one embodiment, the head is attached to the flange case by a substantially continuous curvilinear annular metal retaining member which must be inelastically deformed or destroyed in order to remove the head from the flange case, thus rendering tampering more difficult. In another embodiment, the annular metal retaining member of the present invention is integral with the actuator head and which is metal-spun or the like onto the flange case.
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: July 18, 1995
    Assignee: Indian Head Industries, Inc.
    Inventors: Graydon J. Choinski, Allen L. Gummer, David W. Brooks
  • Method of making tamper-resistant brake actuators
    Patent number: 5311809
    Abstract: The present invention provides a tamper-resistant fluid-operated brake actuator having a power spring housed within a head or cap which is attached to a flange case having one or more diaphragms or pistons responsive to changes of fluid pressure within the brake actuator chambers. In one embodiment, the head is attached to the flange case by a substantially continuous curvilinear annular metal retaining member which must be inelastically deformed or destroyed in order to remove the head from the flange case, thus rendering tampering more difficult. In another embodiment, the annular metal retaining member of the present invention is integral with the actuator head and which is metal-spun or the like onto the flange case.
    Type: Grant
    Filed: July 8, 1992
    Date of Patent: May 17, 1994
    Assignee: Indian Head Industries, Inc.
    Inventors: Graydon J. Choinski, Allen L. Gummer, David W. Brooks
  • Method of forming a tamper-resistant brake actuator
    Patent number: 5263403
    Abstract: The present invention provides a tamper-resistant fluid-operated brake actuator having a power spring housed within a head or cap which is attached to a flange case having one or more diaphragms or pistons responsive to changes of fluid pressure within the brake actuator chambers. In one embodiment, the head is attached to the flange case by a substantially continuous curvilinear annular metal retaining member which must be inelastically deformed or destroyed in order to remove the head from the flange case, thus rendering tampering more difficult. In another embodiment, the annular metal retaining member of the present invention is integral with the actuator head and which is metal-spun or the like onto the flange case.
    Type: Grant
    Filed: April 23, 1993
    Date of Patent: November 23, 1993
    Assignee: Indian Head Industries, Inc.
    Inventors: Graydon J. Choinski, Allen L. Gummer, David W. Brooks
  • Tamper resistant brake actuator
    Patent number: 5205205
    Abstract: The present invention provides a tamper-resistant fluid-operated brake actuator having a power spring housed within a head or cap which is attached to a flange case having one or more diaphragms or pistons responsive to changes of fluid pressure within the brake actuator chambers. In one embodiment, the head is attached to the flange case by a substantially continuous curvilinear annular metal retaining member which must be inelastically deformed or destroyed in order to remove the head from the flange case, thus rendering tampering more difficult. In another embodiment, the annular metal retaining member of the present invention is integral with the actuator head and which is metal-spun or the like onto the flange case.
    Type: Grant
    Filed: July 8, 1992
    Date of Patent: April 27, 1993
    Assignee: Indian Head Industries, Inc.
    Inventors: Graydon J. Choinski, Allen L. Gummer, David W. Brooks
  • Tamper-resistant brake actuator
    Patent number: 5067391
    Abstract: The present invention provides a tamper-resistant fluid-operated brake actuator having a power spring housed within a head or cap which is attached to a flange case having one or more diaphragms or pistons responsive to changes of fluid pressure within the brake actuator chambers. In one embodiment, the head is attached to the flange case by a substantially continuous curvilinear annular metal retaining member which must be inelastically deformed or destroyed in order to remove the head from the flange case, thus rendering tampering more difficult. In another embodiment, the annular metal retaining member of the present invention is integral with the actuator head and which is metal-spun or the like onto the flange case.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: November 26, 1991
    Assignee: Indian Head Industries, Inc.
    Inventors: Graydon J. Choinski, Allen L. Gummer, David W. Brooks
  • Tamper-resistant brake actuator
    Patent number: 4960036
    Abstract: The present invention provides a tamper-resistant fluid-operated brake actuator having a power spring housed within a head or cap which is attached to a flange case having one or more diaphragms or pistons responsive to changes of fluid pressure within the brake actuator chambers. In one embodiment, the head is attached to the flange case by a substantially continuous curvilinear annular metal retaining member which must be inelastically deformed or destroyed in order to remove the head from the flange case, thus rendering tampering more difficult. In another embodiment, the annular metal retaining member of the present invention is integral with the actuator head and which is metal-spun or the like onto the flange case.
    Type: Grant
    Filed: November 6, 1987
    Date of Patent: October 2, 1990
    Assignee: Indian Head Industries, Inc.
    Inventors: Allen L. Gummer, Graydon J. Choinski, David W. Brooks