Rotary cutting mechanism
Patent 4216686 Issued on August 12, 1980. Estimated Expiration Date: 
August 29, 1998. 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.
August 29, 1998. 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 ReferencesInventorAssigneeApplicationNo. 05/937812 filed on 08/29/1978US Classes:82/53, Including scrap cutting means82/86, Pivoted tool carriage82/92, Rotatable tool(s) driven by contact with work82/98Separate means for plural toolsExaminersPrimary: Vlachos, LeonidasAttorney, Agent or FirmInternational ClassesB26D 7/18 (20060101)B26D 3/16 (20060101) B27B 33/00 (20060101) B27B 5/34 (20060101) B27B 5/00 (20060101) B27B 33/20 (20060101) AbstractA rotary cutting mechanism for transversely slicing an elongated rotatably driven roll of material such as plastic film into a number of narrower rolls includes a pair of spaced-apart knife cutting blades mounted for free rotation about an axis parallel to the longitudinal axis of the roll. A rotary saw blade is mounted intermediate and in axial alignment with the cutting blades, and is independently driven to remove material between the cutting blade edges as the blades are moved together to slice the roll. The finished narrower cut rolls therefore exhibit smoothly finished side edges and are readily separable from each other, there being no frictional heat developed by the cutting blade edges which are free to turn with the material on the roll as they slice through it. | |
