Rowing exercise machine
September 21, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3858873 Force receiving exercising member Arm curl machine Weight lifting apparatus having increased force on the return stroke Variable exercise apparatus Horizontal force exercise apparatus Weight lifting type exercising device Exercise machine Exercise machine Muscular development method Patent #: 4966363 InventorAssigneeApplicationNo. 586426 filed on 09/21/1990US Classes:482/72, Rowing482/97, Having lever carrying the weight482/134, Including stationary restraint for user482/136, Rotatably movable482/137About a horizontal axisExaminersPrimary: Apley, Richard J.Assistant: Crosby, D. F. Attorney, Agent or FirmForeign Patent References
International ClassA63B 069/06AbstractA rowing exercise machine includes a frame, a seat and a chest brace supported by the frame, and a pair of levers pivotally connected to the frame in front of the brace and seat. Each of the levers has a lower end adapted to support at least one removable weight and a handle at an upper end adapted to be grasped by an exerciser supported on the seat. During the performance of a rowing exercise, the exerciser pulls the handles upwardly and rearwardly to pivot the levers against the weight resistances held by the lower ends. The levers move along two outer vertical planes that converge with respect to the forward direction of the seat, and each of the levers pivots independently with respect to the frame.Other References
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