Patents by Inventor Steven D. Sokol

Steven D. Sokol 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).

  • Exercise method and apparatus
    Patent number: 5964684
    Abstract: An exercise apparatus has a body supporting carriage that moves relative to a frame in a direction having a vertical component. Levers are movably mounted on the carriage and connected to the frame in such a manner that movement of the levers relative to the carriage is linked to movement of the carriage relative to the frame.
    Type: Grant
    Filed: April 19, 1996
    Date of Patent: October 12, 1999
    Inventor: Steven D. Sokol
  • Reciprocating aerobic exercise machine
    Patent number: 5964682
    Abstract: A full body reciprocating aerobic exercise machine that forces all of a user's limbs to move during the exercise. Because all the leg and arm levers move in unison, it allows a user to maintain the proper exercise motion even with an injured, incapacitated, or missing limb. The machine simulates uphill running or walking, and eliminates any joint impact to the user. The machine includes a central torso stabilization support, two leg levers, and two arm levers. The torso support and the leg and arm levers are mounted on a machine base. The leg and arm levers are rotatable through a limited but large arc relative to the torso support. The levers are synchronized so that the left leg lever must move with the right arm lever, and the right leg lever must move with the left arm lever, and so that all four levers move simultaneously. Because of this synchronization, the machine utilizes a "cross-crawl" motion that is completely natural to any user. A user's learning time is therefore minimized.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: October 12, 1999
    Inventor: Steven D. Sokol
  • Exercise method and apparatus
    Patent number: 5810698
    Abstract: An exercise apparatus has a body supporting carriage that moves relative to a frame in a direction having a vertical component. Levers are movably mounted on the carriage and connected to the frame in such a manner that movement of the levers relative to the carriage is linked to movement of the carriage relative to the frame.
    Type: Grant
    Filed: April 19, 1996
    Date of Patent: September 22, 1998
    Assignee: Nordic Track Inc
    Inventors: Laurence J. Hullett, Jeffrey G. Zwiefel, Steven D. Sokol
  • Reciprocating exercise machine
    Patent number: 5709633
    Abstract: A full body reciprocating aerobic exercise machine that forces all of a user's limbs to move during the exercise. Because all the leg and arm levers move in unison, it allows a user to maintain the proper exercise motion even with an injured, incapacitated, or missing limb. The machine simulates uphill running or walking, and eliminates any joint impact to the user. The machine includes a central torso stabilization support, two leg levers, and two arm levers. The torso support and the leg and arm levers are mounted on a machine base. The leg and arm levers are rotatable through a limited but large arc relative to the torso support. The levers are synchronized so that the left leg lever must move with the right arm lever, and the right leg lever must move with the left arm lever, and so that all four levers move simultaneously. Because of this synchronization, the machine utilizes a "cross-crawl" motion that is completely natural to any user. A user's learning time is therefore minimized.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: January 20, 1998
    Inventor: Steven D. Sokol
  • Multiple purpose stretching exerciser
    Patent number: D358435
    Type: Grant
    Filed: June 3, 1993
    Date of Patent: May 16, 1995
    Inventor: Steven D. Sokol