The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 11, 1977
Filed:
Jun. 25, 1976
Richard A DeKeyser, Edelstein, IL (US);
John H Parks, Peoria, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
Abstract
A fuel filtering system comprises a case having a cartridge-type filter disposed therein, along with a separator which defines a reservoir. Fuel, such as diesel fuel, is adapted to normally enter an inlet to the case, flow through the filter and thence to an outlet of the case for engine consumption purposes. A valve member, having a specific gravity less than water but greater than that of the fuel, is movably mounted adjacent to the outlet. When the level of water in the reservoir exceeds a predetermined level, the valve member will float on the water and move upwardly to at least partially close-off communication of fuel to the outlet to thus adversely affect engine performance whereby the vehicle operator is alerted to the water-in-fuel problem. In a first embodiment of this invention, such valve member comprises a tubular member mounted exteriorly on a tube defining the outlet therein whereas in a second such embodiment the valve member comprises a spherical ball movably mounted in the tubular member.