Plastic filter assembly
Patent 4689147 Issued on August 25, 1987. Estimated Expiration Date: 
September 27, 2005. 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.
September 27, 2005. 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 ReferencesInventorsAssigneeApplicationNo. 06/780928 filed on 09/27/1985US Classes:210/232, WITH REPAIR OR ASSEMBLING MEANS210/244, PORTABLE RECEPTACLE WITH HOOD OR CLOSURE210/455, Receptacle and modified spacing surface or support for filter medium210/474, At upper edge of filtrate receiver210/482, At lower end or prefilt receiver220/300Locking lug engages "L" or cresent-shaped keeper slotsExaminersPrimary: Therkorn, Ernest G.Assistant: Evans, Linda S. Attorney, Agent or FirmInternational ClassesB01D 35/30 (20060101)B01D 61/18 (20060101) B01D 29/05 (20060101) B01D 29/01 (20060101) AbstractA plastic filter assembly having an upper receiving container and a lower receiving container. Either the top or bottom container is provided with at least two recesses for receiving a locking pin in the container not having recesses. The recess has a first receiving portion and a locking portion. The locking pin has an angled engaging surface inclined with respect to longitudinal axis of the container.Field of SearchWITH REPAIR OR ASSEMBLING MEANSHand manipulable Receptacle and modified spacing surface or support for filter medium Receptacle spout On or adjacent receptacle upper edge At upper edge of filtrate receiver Filter offset in cover Resting on internal stop or surface PORTABLE RECEPTACLE WITH HOOD OR CLOSURE | |
