Collapsible exercise back pack
Patent 4332379 Issued on June 1, 1982. Estimated Expiration Date: 
July 28, 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.
July 28, 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.InventorApplicationNo. 06/172814 filed on 07/28/1980US Classes:482/105, Weight worn on body of user224/148.5, Secured by flaccid member224/639, Attaching means is a continuation of the shoulder straps224/657, Zipper224/676Specified receiver detailsExaminersPrimary: Pinkham, Richard C.Assistant: Browne, William R. Attorney, Agent or FirmInternational ClassesA63B 21/065 (20060101)A63B 21/06 (20060101) AbstractA collapsible training device to be worn by a person during physical exercise. The device includes a flexible weight carrying member, with at least one opening in the member positioned at its bottom for containing a flexible weight member. Straps attached to the weight carrying member secures the device about the person's shoulders and waist. The flexible weight member is adapted for containing a flexible and disposable weight material. When the weight member is empty, the device occupies a minimum size and has a reduced weight. | |
