Muscular exercise apparatus and method
Patent 4405128 Issued on September 20, 1983. Estimated Expiration Date: 
December 11, 2000. 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.
December 11, 2000. 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 Weight exercise device Patent #: 4226414 InventorsAssigneeApplicationNo. 06/215227 filed on 12/11/1980US Classes:482/97, Having lever carrying the weight482/137, About a horizontal axis482/139, User interface element601/24, Chair, couch, bed, or table601/33Joint or limb (e.g., wrist, arm, leg, etc.)ExaminersPrimary: Grieb, William H.Assistant: Browne, William R. Attorney, Agent or FirmInternational ClassA63B 21/06 (20060101)AbstractAn exercise apparatus permitting external torque applied in resistance to an exercise to be adjustably controlled during the course of the exercise to match the external torque applied with the internal torque produced by the muscles involved in the exercise. The exercise apparatus is disclosed embodied in a sit-up apparatus in which weights can be adjustably mounted on weight arms extending in line with the subject's torso and behind the subject's torso for normal subjects, and below the torso to assist weak subjects for rehabilitative purposes. | |
