Iris mechanism
Patent 4804108 Issued on February 14, 1989. Estimated Expiration Date: 
June 3, 2007. 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 3, 2007. 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 2489096 2852899 2893598 3927799 Apparatus for dispensing containers from a stack of nested containers Patent #: 4426017 InventorAssigneeApplicationNo. 07/057919 filed on 06/03/1987US Classes:221/223, Oscillating221/241, With size adjusting means221/251, With separate holdback means221/297, Multiple, simultaneously acting and circumposed controllers221/304Adjustable sizeExaminersPrimary: Marmor, Charles A.Attorney, Agent or FirmInternational ClassesB65G 59/00 (20060101)B65G 59/10 (20060101) AbstractAn iris mechanism for preventing unauthorized removal of containers from apparatus for dispensing containers, such as cups. The apparatus separates and releases a single container from a stack of containers. The iris mechanism defines a central opening through which a released container must pass. The size of the opening may be changed between a closed position wherein the opening is smaller than the largest diameter of a cup to be dispensed by the apparatus and an open position wherein the opening is at least as large as the largest diameter of a cup to be dispensed.Field of SearchOf article releasing outlet closureWith fluent material dispenser With size adjusting means Multiple, simultaneously acting and circumposed (e.g., cup dispensers) Rotary Oscillating Delivering segregated articles to holddown means Delivering segregated articles to holddown Adjustable size With article motion retarding baffle at inlet to support Multiple, simultaneously acting and circumposed controllers Separately acting series controllers Plural integral transversely acting controllers Three or more Pivoted Ejector with relatively movable outlet closure Mechanically linked to or locked by ejector Closure moves ejector With separate holdback means | |
