Free weight barbell spotting and racking machine
May 14, 2011. 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 ReferencesExercise bench safety device Accessory apparatus for weight lifting Solo-operable bench press device Bench press lifting aid Variable resistance exercise apparatus Adjustable barbell exercise rack Exercise machine with improved load varying arrangement Powerlift competition safety device Exercise bench with safety apparatus Barbell assist device Patent #: 4949959 InventorsApplicationNo. 699916 filed on 05/14/1991US Classes:482/104Barbell supportExaminersPrimary: Bahr, RobertInternational ClassA63B 021/078AbstractA free weight lifting apparatus adapted for to return of a Free Weight Barbell (6) to a stationary barbell support rack (3), without other ancillary assistance, for a lone exerciser participating in a variety of free weight lifting exercises, including negative lift exercises. A reciprocating frame assembly (2) adapted for the upward and rearward travel of a Free Weight Barbell (6) in the direction of the stationary barbell support rack (3). The reciprocal frame assembly is comprised of a pair of horizontal arms (4) with an electrical switch (11) secured to each arm and a sleeve (5) pivoted over each switch (11). The reciprocal frame (2) reciprocates in or about a fixed vertical frame (1). The frame (2) is raised and lowered by an hydraulic cylinder (8) which is powered by an electrically driven pump (24). The electrical switches (11) are activated when the free weight barbell (6) depresses the sleeves (5) and are deactivated when the barbell automatically rolls off the sleeves and re-positions itself on the support rack. | |
