High efficiency deep fat fryer
Patent 4668390 Issued on May 26, 1987. Estimated Expiration Date: 
October 28, 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.
October 28, 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. 06/791846 filed on 10/28/1985US Classes:210/103, Diverse sensing means126/369, Steam chamber for food126/392.1, The liquid circulating between external heating tube and vessel165/163, Conduit coiled within casing210/187, Within gravitational separator99/408With crumb or sediment segregating or handlingExaminersPrimary: Metz, Andrew H.Assistant: Cohen, Sharon T. Attorney, Agent or FirmInternational ClassA47J 37/12 (20060101)AbstractDisclosed is a high efficiency deep fat fryer from whose fry tank fat is continuously withdrawn for heating and filtration. A pump circulates part of this fat through a helical- or serpentine-shaped finned-tube heat exchanger positioned between a gas-fired burner and the bottom of the fry tank. The remaining portion of fat is directed through a filter located in the bottom zone of the fry tank. The fryer includes a control system with sensors such as pressure switches for preventing damage to the fat at low flow rates and devices for expelling moisture trapped in the pump. The filter has an element of material such as carbon-impregnated cloth which may be quickly replaced without draining fat from the tank. | |
