Patents by Inventor Donald Charles Michaels

Donald Charles Michaels 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: 8181394
    Abstract: This invention claims a steel elevator door guide, which contains a reinforcement beam, an attachment beam, a guide carrier and a glide. The attachment beam connects at the bottom end of a elevator cab or corridor door. The invention is held securely clamped together by fasteners, welding or glue. To further protect against any lateral movement imposed onto an elevator door, one or more frictional surfaces is engraved at contact points between individual components and safety rail(s) are provided. A noise reducing, nylon glide is attached to the guide carrier using the same fasteners as those supporting the reinforcement beam. These components are intended to prevent lateral motion of an elevator cab or corridor door even if a severe lateral pressure on the elevator doors has caused the glide to severely flex or fail.
    Type: Grant
    Filed: May 1, 2008
    Date of Patent: May 22, 2012
    Inventor: Donald Charles Michaels
  • Publication number: 20080271960
    Abstract: This invention claims a steel elevator door guide, which contains a reinforcement beam, an attachment beam, a guide carrier and a glide. The attachment beam connects at the bottom end of a elevator cab or corridor door. The invention is held securely clamped together by fasteners, welding or glue. To further protect against any lateral movement imposed onto an elevator door, one or more frictional surfaces is engraved at contact points between individual components and safety rail (s) are provided. A noise reducing, nylon glide is attached to the guide carrier using the same fasteners as those supporting the reinforcement beam. These components are intended to prevent lateral motion of an elevator cab or corridor door even if a severe lateral pressure on the elevator doors has caused the glide to severely flex or fail.
    Type: Application
    Filed: May 1, 2008
    Publication date: November 6, 2008
    Inventor: Donald Charles Michaels