Dumbbell
Patent 4453710 Issued on June 12, 1984. Estimated Expiration Date: 
April 14, 2002. 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 14, 2002. 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 ReferencesBarbell with removable weights and a spring type gripping device Patent #: 4021040 InventorApplicationNo. 06/368367 filed on 04/14/1982US Classes:482/107, Having securing member (e.g., locking collar, etc.) for retaining weight on bar403/167TRANSVERSE ROD TO SPACED PLATE SURFACESExaminersPrimary: Apley, Richard J.Assistant: Browne, William R. Attorney, Agent or FirmInternational ClassesA63B 21/06 (20060101)A63B 21/072 (20060101) Foreign Application Priority Data1981-04-18 DEAbstractAn exercise dumbbell having wheel weights on each end thereof that are each detachably attached to a grip bar by locking tabs on the grip bar and complementary stops on each wheel weight. The weights are engageable with each other on the grip bar and are locked thereon by rotating each weight relative to the grip bar thereby interlocking the complementary stops with the locking tabs. | |
