Weight lifting apparatus
Patent 5284463 Issued on February 8, 1994. Estimated Expiration Date: 
April 30, 2013. 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.
April 30, 2013. 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 ReferencesBar-bell type exercising device Dumbell and barbell exercise equipment Quick-bolt locking system Barbell system Barbell having hollow interlocking weights Barbell weight lock Multiflex exercise device Patent #: 5024434 InventorApplicationNo. 056562 filed on 04/30/1993US Classes:482/107Having securing member (e.g., locking collar, etc.) for retaining weight on barExaminersPrimary: Bahr, RobertAttorney, Agent or FirmForeign Patent References
International ClassA63B 021/072AbstractThe apparatus is configured as a dumbbell having an elongated hollow lifting bar with a pivotable handle for activating a wedge-shaped cam element mounted to the bar. The cam element longitudinally forces two rods carried in a passageway of the bar to move pin operator elements of each weight. Opposed sides of a weight respectively include a depression or cavity and a laterally extending boss with a boss of one weight fitting within a depression of an adjacent weight. Each boss carries a pair of diametrically opposed inwardly biased pins that are moved outwardly by the element to engage a grooved surface in the depression on an adjacent weight to secure the weights together. Oversized bar alignment rings with essentially identical grooved surfaces are engaged by the pins of a first weight in a series. A support base having a pair of convergent channels to accommodate the alignment rings guides the dumbbell into its resting place. The weights are maintained in movable weight carriers by a spring-loaded weight positioning element to prevent movement of selected adjacent weight carriers when the weights are being secured together.Field of SearchHaving guide around or through weightAnd flexible force transmitting linkage element Pivoted user interface element Track or way guided user interface element Flexible element drawn out through exit guide Relocatable exit guide Barbell support Handheld bar with weight at each end (e.g., barbell, dumbbell, etc.) or component thereof Having securing member (e.g., locking collar, etc.) for retaining weight on bar Bar held by single hand of user (e.g., dumbbell, etc.) | |
