Spiral binding machine for spirally feeding a spiral binding element
Patent 4378822 Issued on April 5, 1983. Estimated Expiration Date: 
June 23, 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.
June 23, 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 References 770722 2532443 2808079 3134406 InventorAssigneeApplicationNo. 06/391449 filed on 06/23/1982US Classes:140/92.3Helix screwing through row of loops or openingsExaminersPrimary: Goldberg, Howard N.Assistant: Silverberg, Fred A. Attorney, Agent or FirmInternational ClassesB42B 5/12 (20060101)B42B 5/00 (20060101) Foreign Application Priority Data1979-03-19 GBAbstractA machine is disclosed for spirally feeding a spiral binding element. A mandrel guides the element. A driving wheel rotates the element on the mandrel. A location member engages in the element's spiral whereby the element is fed along the mandrel when the driving wheel rotates the element. | |
