Patents by Inventor Sid M. Zimmerman

Sid M. Zimmerman 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).

  • Multiple stage, multiple extend, speed reducing ball screw linear actuator and method of constructing and operating the actuator
    Patent number: 6761080
    Abstract: A multiple extend ball screw and nut linear actuator incorporates a revolvable axially restrained ball screw with a ball nut thereon. A constant speed reversible drive revolves the screw to move the ball nut forwardly and rearwardly. External helical threads of the same hand as the ball nut threads are provided externally on the ball nut but have a substantially reduced lead. A second rotatably restrained nut having threads matching the external threads on the ball nut mounts on the ball nut and connects to the system to be actuated.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: July 13, 2004
    Assignee: Thomson Saginaw Ball Screw Co., LLC
    Inventors: David A. Lange, Sid M. Zimmerman
  • Multiple stage, multiple extend, speed reducing ball screw linear actuator and method of constructing and operating the actuator
    Publication number: 20030167867
    Abstract: A multiple extend ball screw and nut linear actuator incorporates a revolvable axially restrained ball screw with a ball nut thereon. A constant speed reversible drive revolves the screw to move the ball nut forwardly and rearwardly. External helical threads of the same hand as the ball nut threads are provided externally on the ball nut but have a substantially reduced lead. A second rotatably restrained nut having threads matching the external threads on the ball nut mounts on the ball nut and connects to the system to be actuated.
    Type: Application
    Filed: March 12, 2003
    Publication date: September 11, 2003
    Inventors: David A. Lange, Sid M. Zimmerman
  • Multiple stage, multiple extend, speed reducing ball screw linear actuator and method of constructing and operating the actuator
    Publication number: 20010029797
    Abstract: A multiple extend ball screw and nut linear actuator incorporates a revolvable axially restrained ball screw with a ball nut thereon. A constant speed reversible drive revolves the screw to move the ball nut forwardly and rearwardly. External helical threads of the same hand as the ball nut threads are provided externally on the ball nut but have a substantially reduced lead. A second rotatably restrained nut having threads matching the external threads on the ball nut mounts on the ball nut and connects to the system to be actuated.
    Type: Application
    Filed: April 24, 2001
    Publication date: October 18, 2001
    Applicant: Thomson Saginaw Ball Screw Company, L.L.C.
    Inventors: David A. Lange, Sid M. Zimmerman