Patents by Inventor Charles B. Kirkwood

Charles B. Kirkwood 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: 6584932
    Abstract: A bird feeder having a lid latching mechanism which comprises L-shaped holes on the feeder's lid, and a wire handle having projections that orient above the lid. The projections in the handle align with the sides of the L-shaped holes to prevent the lid from being lifted from the bird feeder. A seed cover over the seed dispensing area is connected to a shaped wire perch via a through-hole. The perch acts as an actuator to close the seed cover, and is counter actuated by an extension spring, which attaches to the seed cover and feeder base.
    Type: Grant
    Filed: October 1, 2001
    Date of Patent: July 1, 2003
    Inventors: Peter T. Rogers, Charles B. Kirkwood
  • Publication number: 20030062000
    Abstract: This invention pertains to an improved and simplified means for squirrel proofing a bird feeder. Two aspects to be used in combination or independently are a latching lid and a closing means over the seed dispensing area The lid latching means comprises a lid with a means for engaging with the seed column and shaped holes, which communicate with projections on the handle to lock the lid in place. The closing mechanism comprises a seed cover that is actuated by a pivoting perch that can be either spring loaded or counter weighted.
    Type: Application
    Filed: October 1, 2001
    Publication date: April 3, 2003
    Inventors: Peter T. Rogers, Charles B. Kirkwood