Fuel filter retention system
Patent 5203994 Issued on April 20, 1993. Estimated Expiration Date: 
August 16, 2011. 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 16, 2011. 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 3502221 Plastic fluid filter and method for manufacturing same Fuel filter and cartridge assembly Patent #: 5017285 InventorAssigneeApplicationNo. 746693 filed on 08/16/1991US Classes:210/232, WITH REPAIR OR ASSEMBLING MEANS210/438, Imperforate central liquid tube210/454Filter element attached to closureExaminersPrimary: Savage, Matthew O.Attorney, Agent or FirmForeign Patent References
International ClassB01D 027/00AbstractA fuel filter assembly employs a retainer collar for locking the disposable cartridge to the base. The base and the retainer collar are configured with a pair complementary spiral ramp-like structures. The retainer collar is rotatable so that the catches are positioned in slots of the base for locking the cartridge to the base. A spring washer biases the retainer collar into the locked position.Field of SearchWITH REPAIR OR ASSEMBLING MEANSInternal spring Within flow line or flow line connected close casing Inlet and outlet at same end Filter suspended from head Filter element attached to closure Central internal liquid receiver, e.g., tube Imperforate central liquid tube Axial flow through filter element Quick removal (e.g., bayonet) Lugs engage cammed keeper Biased or resilient lugs | |
