On-line closed-vessel circulating filter for edible cooking oils
Patent 4043916 Issued on August 23, 1977. Estimated Expiration Date: 
August 23, 1994. 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 23, 1994. 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 3085689 3337055 3768654 3849312 InventorAssigneeApplicationNo. 05/696650 filed on 06/16/1976US Classes:210/238, Hand manipulable210/167, Closed circulating systems210/455, Receptacle and modified spacing surface or support for filter medium210/479Inner separate retainerExaminersPrimary: Lutter, Frank W.Assistant: Cuchlinski, William A. Jr. Attorney, Agent or FirmAbstractAn on-line closed-vessel circulating filter is especially adapted for filtering edible cooking oils and the like in fast-food establishments and similar installation. The filter apparatus includes a vessel and cover which enclose a filter assembly. The filter assembly is provided with a foraminous member which supports a filter element. To hold the filter element in place and retain filter aid material and filtrate on the filter element, a gravity clamp member presses the filter element against the foraminous member by inner and outer weight rings. The filter assembly can be removed and replaced by a centrally located lift rod.Field of SearchWITH REPAIR OR ASSEMBLING MEANSHoist or handle means Vacuumized filtrate receiver Receptacle and modified spacing surface or support for filter medium Resting on internal stop or surface Inner separate retainer At lower end or prefilt receiver For series flow Hand manipulable Closed circulating systems | |
