Patents by Inventor David J.C. Steven

David J.C. Steven 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).

  • Method and apparatus for metered dose dispensing
    Patent number: 8517019
    Abstract: This application discloses a dose counter device of the type for use on an aerosol dispensing assembly having an aerosol container and an actuator. The dose counter device is used for indicating the release of a dose of aerosol medication caused by the application of a force, in an axial direction, on the aerosol dispensing assembly. The dose counter device has a cap, a slider and a first counter ring. The cap is moved in a first direction along an axis of the container, which causes movement of the slider in a first linear direction laterally, relative to the axis of the container, as a function of the movement of the cap in the first direction. The first counter ring is rotated through a first arc in a first circumferential direction about the axis of the container, as a function of the movement of the slider in the first linear direction.
    Type: Grant
    Filed: March 1, 2007
    Date of Patent: August 27, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Richard D. Brewer, Peter D. Hodson, Graham R. Purkins, David J.C. Steven
  • METHOD AND APPARATUS FOR METERED DOSE DISPENSING
    Publication number: 20090308385
    Abstract: This application discloses a dose counter device of the type for use on an aerosol dispensing assembly having an aerosol container and an actuator. The dose counter device is used for indicating the release of a dose of aerosol medication caused by the application of a force, in an axial direction, on the aerosol dispensing assembly. The dose counter device has a cap, a slider and a first counter ring. The cap is moved in a first direction along an axis of the container, which causes movement of the slider in a first linear direction laterally, relative to the axis of the container, as a function of the movement of the cap in the first direction. The first counter ring is rotated through a first arc in a first circumferential direction about the axis of the container, as a function of the movement of the slider in the first linear direction.
    Type: Application
    Filed: March 1, 2007
    Publication date: December 17, 2009
    Inventors: Richard D. Brewer, Peter D. Hodson, Graham R. Purkins, David J.C. Steven