Patents by Inventor Mark W. Harmsen

Mark W. Harmsen 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).

  • Articulated bed incorporating a single motor drive mechanism
    Patent number: 6230346
    Abstract: An articulated bed assembly includes a stationary frame structure to which an upper body support section and a lower body support section are pivotably mounted for movement between raised and lowered positions. An actuator arrangement includes an actuator member which is adapted for extension and retraction in response to operation of an operating arrangement such as a drive motor. The actuator member is interconnected with the upper body support section through a drive member for raising and lowering the upper body support section in response to extension and retraction of the actuator member. An operating mechanism is interconnected between the actuator member and the lower body support section for lifting and lowering the lower body support section in response to extension and retraction of the actuator member. The operating mechanism includes a linkage arrangement defining a first link pivotably mounted to the stationary frame assembly and a second link pivotably mounted to the actuator member.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: May 15, 2001
    Assignee: Basic American Medical Products, Inc.
    Inventors: Rodney A. Branson, Mark W. Harmsen, William W. Baier, Keith Cramer