Patents by Inventor William James Campbell

William James Campbell 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: 11483965
    Abstract: A hand-held spreader is provided having a base with a mechanism for spreading particulate material response to turning a hand crank. The base is universally attachable to hoppers of different types which provide particulate material to the base for spreading. Different types of hoppers when attached to the base can adapt the spreader to spread different particulate material, such as of seed or salt. Teeth may be provided along upper edge of the hopper for use in scooping up particulate material into the hopper. Another type of hopper which can be attached to the base has a closed top end to provide a sealed container of particulate material, and has a sealing member releasable from the hopper to allow flow of particulate material from the hopper to the attached base.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: November 1, 2022
    Assignee: Chapin Manufacturing, Inc.
    Inventors: David J. Dubiel, William James Campbell
  • Patent number: 10736263
    Abstract: A spreader includes a frame having wheels mounted on an axle. A gear assembly on the axle is coupled with a shaft. A hopper is mounted on the frame and holds particulate that empties through an opening within the bottom wall. An impeller is mounted on the shaft and receives the particulate emptied from the hopper. A controlled-release assembly is mounted about the shaft and includes a drive housing secured to the hopper. The drive housing has a funnel opening to dispense the particulate therethrough. A transfer wheel within the drive housing is rotatably coupled to the shaft. When the shaft is rotating, the transfer wheel rotates whereby the particulate is delivered to the funnel. When the shaft is stationary, the transfer wheel is stationary whereby particulate is not delivered to the funnel.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: August 11, 2020
    Assignee: Chapin Manufacturing, Inc.
    Inventors: Ed Horeth, David Dubiel, William James Campbell
  • Publication number: 20190327884
    Abstract: A spreader includes a frame having wheels mounted on an axle. A gear assembly on the axle is coupled with a shaft. A hopper is mounted on the frame and holds particulate that empties through an opening within the bottom wall. An impeller is mounted on the shaft and receives the particulate emptied from the hopper. A controlled-release assembly is mounted about the shaft and includes a drive housing secured to the hopper. The drive housing has a funnel opening to dispense the particulate therethrough. A transfer wheel within the drive housing is rotatably coupled to the shaft. When the shaft is rotating, the transfer wheel rotates whereby the particulate is delivered to the funnel. When the shaft is stationary, the transfer wheel is stationary whereby particulate is not delivered to the funnel.
    Type: Application
    Filed: April 26, 2018
    Publication date: October 31, 2019
    Applicant: Chapin Manufacturing, Inc.
    Inventors: Ed Horeth, David Dubiel, William James Campbell
  • Publication number: 20180368309
    Abstract: A hand-held spreader is provided having a base with a mechanism for spreading particulate material response to turning a hand crank. The base is universally attachable to hoppers of different types which provide particulate material to the base for spreading. Different types of hoppers when attached to the base can adapt the spreader to spread different particulate material, such as of seed or salt. Teeth may be provided along upper edge of the hopper for use in scooping up particulate material into the hopper. Another type of hopper which can be attached to the base has a closed top end to provide a sealed container of particulate material, and has a sealing member releasable from the hopper to allow flow of particulate material from the hopper to the attached base.
    Type: Application
    Filed: May 3, 2018
    Publication date: December 27, 2018
    Applicant: Chapin Manufacturing, Inc.
    Inventors: David J. Dubiel, William James Campbell
  • Patent number: D823655
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: July 24, 2018
    Assignee: Chapin Manufacturing, Inc.
    Inventors: David J. Dubiel, William James Campbell