Patents by Inventor Douglas D. Macmillan

Douglas D. Macmillan 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).

  • Combination walker and transport chair
    Patent number: 6659478
    Abstract: A wheeled walker convertible to a transport chair. The walker has a strap-type backrest that is pivotally attached to the upper end of the handlebars. The backrest can be placed in a forward position when the apparatus is used as a walker and the user wishes to rest in a rearward facing sitting position and in a rearward position when the apparatus is used as a transport chair and the user sits in a forward facing position and is propelled by a care-giver. A novel braking system locates the brake actuating linkage inside the leg and handlebar members and provides accommodates extension height adjustment of the handlebars. A brake lever system providing a linear pull non-cable brake actuation is also disclosed.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: December 9, 2003
    Assignee: Random Products Trust
    Inventors: Bjarki Hallgrimsson, Sarah Dobbin, Douglas D. Macmillan
  • Walker with movable carry basket
    Patent number: 6651994
    Abstract: A wheeled walker having a moveable carry basket. The walker has a carry basket mounted between the front leg members. The mounting arrangement permits the basket to be moved between a first position in which the basket projects forward of the front leg members for ease of loading and unloading and a second position in which the basket is displaced substantially rearward of the front leg members under the seating surface.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: November 25, 2003
    Assignee: Randon Products Trust
    Inventors: Bjarki Hallgrimsson, Sarah Dobbin, Douglas D. Macmillan
  • Walker with movable carry basket
    Publication number: 20020079663
    Abstract: A wheeled walker having a moveable carry basket. The walker has a carry basket mounted between the front leg members. The mounting arrangement permits the basket to be moved between a first position in which the basket projects forward of the front leg members for ease of loading and unloading and a second position in which the basket is displaced substantially rearward of the front leg members under the seating surface.
    Type: Application
    Filed: July 18, 2001
    Publication date: June 27, 2002
    Inventors: Bjarki Hallgrimsson, Sarah Dobbin, Douglas D. Macmillan
  • Combination walker and transport chair
    Publication number: 20020050697
    Abstract: A wheeled walker convertible to a transport chair. The walker has a strap-type backrest that is pivotally attached to the upper end of the handlebars. The backrest can be placed in a forward position when the apparatus is used as a walker and the user wishes to rest in a rearward facing sitting position and in a rearward position when the apparatus is used as a transport chair and the user sits in a forward facing position and is propelled by a care-giver. A novel braking system locates the brake actuating linkage inside the leg and handlebar members and provides accommodates extension height adjustment of the handlebars. A brake lever system providing a linear pull non-cable brake actuation is also disclosed.
    Type: Application
    Filed: July 18, 2001
    Publication date: May 2, 2002
    Inventors: Bjarki Hallgrimsson, Sarah Dobbin, Douglas D. Macmillan
  • Walker
    Patent number: D361050
    Type: Grant
    Filed: July 6, 1994
    Date of Patent: August 8, 1995
    Assignee: Dana Douglas Medical, Inc.
    Inventor: Douglas D. Macmillan
  • Brake handle for a walker
    Patent number: D365675
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: January 2, 1996
    Assignee: Dana Douglas Medical
    Inventor: Douglas D. Macmillan