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Publication numberUS3000504 A
Publication typeGrant
Publication dateSep 19, 1961
Filing dateJun 13, 1958
Priority dateJun 13, 1958
Publication numberUS 3000504 A, US 3000504A, US-A-3000504, US3000504 A, US3000504A
InventorsPfeiffer Carl F H
Original AssigneePfeiffer Carl F H
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Visible disposable gasoline filter for outboard motors
US 3000504 A
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Description  (OCR text may contain errors)

P 1961 c. F. H. PFEIFFER 3,000,504


3,000,504 VISIBLE DISPOSABLE GASOL FHTER FOR OUTBOARD MOTO Carl. F. H. Pfeifier, 429 S. 8th St., Quincy, Ill. Filed June 13, 1958, Ser. No. 741,954 1 Claim. (Ci. 21094) This invention relates to filters for fuel lines such as are employed between fuel tanks and an internal combustion engine, and has more specific use on boats having outboard motors, where portable fuel tanks are employed.

The principal object of the present invention is to provide a visible fuel filter for fuel lines, which will readily indicate the flow of fuel and the extent of foreign matter collected by the filter.

Another important object of the invention is the same as the preceding, excepting that the filter has a foreign matter collecting element which is disposable and easily replaced.

Another important object of the invention is to provide a visible disposable gasoline filter of the character stated, wherein the filter unit is of inexpensive construction and can be easily replaced from time to time.

These and various other objects and advantages of the invention will become apparent to the reader of the following description.

In the drawing:

FIGURE 1 is a top plan view of the fuel tank, of the type used in conjunction with outboard motor boat engines, showing the installed filtering unit.

FIGURE 2 is an enlarged longitudinal sectional view taken on line 22 of FIGURE 1.

FIGURE 3 is a cross sectional view, enlarged over FIG- URE 2 and taken substantially on line 3-3 of FIGURE 2.

Referring to the drawing wherein like numerals designate like parts, it can be seen that numeral generally refers to a conventional transportable or movable tank such as is used in conjunction with the motors of outboard motor driven boats.

On the top of this tank 10 is a removable plate 11, on which is a handle 12 which permits carrying of the tank from one point to another.

Numeral 13 generally refers to a fuel line consisting of a hose section 14- to the usual motor of the boat (not shown) and a flexible hose section 15 connected to a fitting 16, which extends through the plate 11 and through which fuel is drawn from the tank 10 to pass through the fuel line 13.

The present invention consists of a filtering unit 17 which is made up of a flexible or pliable cylinder 18 of any suitable bendable material, such as will be found in the plastic material line. This cylinder 18 is pliable or otherwise yieldable so that it can bend incident to any bending of the sections 14, 15 or the fuel line 13 in general.

Numeral 19 denotes a metallic, fine mesh filtering cylinder, closed at its end 20, but open at its other end. This is attached to a collar 21. Over the collar 21 and the adjacent end of the cylinder 18, which of course is Fatented Sept. 19, 1961 transparent, is firmly disposed an apron extension 22 of a reduced tubular extension 23, which has the purpose of receiving the adjacent end of the nipple 24 projecting from the section 14 of the fuel line 13, as clearly shown in FIGURES l and 2.

The other end of the transparent and pliable cylinder 18 has a reinforcing ring or collar 25 disposed therein for supporting the adjacent end of the cylinder 18 against the inside of an apron 26 of a connector extension 27, the latter receiving the nipple extension 28 extending from the section 15 of the fuel line 13.

It can be seen that fuel passing through the section 15 of the fuel line, from the fuel tank 10 will pass from the section 15, into the cylinder 18, and surge through and into the filtering element 19, then pass out and into the section 14 of the line 13, to the motor (not shown).

It will therefore be apparent that gasoline will be filtered through the element 19 and that the unit can be disposed of readily and a new unit installed. In other words when the unit becomes filled with foreign matter, the unit can be disposed of and a new unit installed, the cost being very low.

While the foregoing description sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to Without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention what is claimed as new In combination with a flexible fuel line extending between a fuel reservoir and an internal combustion engine and having an interrupted area therein, a fuel filter disposed in said interrupted area, said fuel filter comprising an outer shell of flexible, pliable, transparent material, an apron connector having a reduced tubular extension fitted on each end of said shell, the opposed ends of the interrupted fuel line engaging in said extensions, a rigid reinforcing ring disposed interiorly of each end of said shell interiorly of the apron of the adjacent apron connector, a metallic, fine mesh filtering cylinder having an open end disposed interiorly of one of said reinforcing rings and a closed end positioned interiorly of said shell fitted within the confines of said ring, and means securing the open end of said filter about the interior of the reinforcing ring in the end of said shell adjacent said fuel reservoir.

References Cited in the file of this patent UNITED STATES PATENTS 1,539,020 Papastefanou May 26, 1925 2,186,987 Nesset J an. 16, 1940 2,265,550 Smith Dec. 9, 1941 2,341,114 Novak Feb. 8, 1944 2,682,268 Ryan et al June 29, 1954 2,704,544 Ryan Mar. 22, 1955 2,835,391 Bottum May 20, 1958 2,839,195 Reimers et al. June 17, 1958

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1539020 *Sep 27, 1924May 26, 1925Perfection Gas Filter CorpGasoline strainer
US2186987 *Aug 5, 1938Jan 16, 1940Baxter Laboratories IncFilter flow device
US2265550 *Jul 3, 1940Dec 9, 1941D B Smith & Company IncStrainer
US2341114 *Feb 16, 1943Feb 8, 1944Milan NovakDisposable filter for blood and plasma transfusions
US2682268 *Aug 8, 1950Jun 29, 1954Abbott LabVenoclysis equipment
US2704544 *Oct 5, 1949Mar 22, 1955 Venoclysis equipment
US2835391 *Jul 12, 1954May 20, 1958Bottum Edward WSingle open end type filter construction
US2839195 *Mar 11, 1954Jun 17, 1958Mccormack Jr Leonard JWater conditioning units for steam emitting pressing devices
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3358839 *Mar 1, 1965Dec 19, 1967Sta Rite IndustriesIn-line filter element assembling means
US3383839 *Mar 23, 1965May 21, 1968Huyck CorpDevices for collecting fibrous materials
US4636313 *Feb 3, 1984Jan 13, 1987Vaillancourt Vincent LFlexible filter disposed within flexible conductor
US4759842 *Dec 4, 1986Jul 26, 1988David FreesIn-line fuel filtering device
US5717137 *Feb 1, 1996Feb 10, 1998Standex International CorporationFlow monitoring line strainer
US5820715 *Sep 15, 1997Oct 13, 1998Standex International CorporationMethod of making flow monitoring line strainer having flow indicating element
U.S. Classification210/94, 210/448
International ClassificationB01D35/02, B01D35/00, B01D35/14, B01D35/143
Cooperative ClassificationB01D35/005, B01D35/02, B01D35/143
European ClassificationB01D35/02