Measuring and testing – Measuring vessel
Reexamination Certificate
1998-11-04
2001-06-26
Williams, Hezon (Department: 2856)
Measuring and testing
Measuring vessel
C073S864130, C073S864160, C073S864170, C073S864630
Reexamination Certificate
active
06250154
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention concerns metering and measuring devices. More particularly, the present invention concerns metering and measuring devices for ensuring proper ratios of mixtures of separate liquids. Even more particularly, the present invention concerns metering and measuring devices for ensuring proper oil to gasoline ratios for two-cycle engine fuel mixtures.
2. Prior Art
As is known to those skilled in the art to which the present invention pertains, one of the more troublesome aspects of operating machinery employing two-cycle engines is the need to maintain the proper ratio of oil to gasoline in the fuel mixture according to manufacturer specifications. Unless this ratio is properly maintained, the engine may burn up or otherwise become damaged. Yet, absent laborious monitoring of the fuel mixture ratio, remembering at all times to add oil to the gasoline, this can be easily overlooked. The present invention, as will be subsequently detailed, overcomes this problem by providing a device that readily assures that proper ratios are maintained.
SUMMARY OF THE INVENTION
In its broadest aspect, the present invention comprises a fluid metering and measuring device comprising:
(a) a filling chamber having a fluid inlet and a fluid outlet;
(b) a one-way valve disposed in the fluid inlet for controlling fluid flow into the chamber;
(c) a one-way valve disposed in the fluid outlet for controlling flow out of the outlet;
(d) means for drawing fluid into the chamber; and
(e) indicia disposed on the means for drawing for indicating the quantity of fluid in the chamber in relation to another fluid.
The present invention may be embodied in a combined gasoline and oil container. Alternatively, the present invention may be embodied in a metering device emplaceable in fluid communication with a quantity of gasoline, the metering device metering a requisite amount of oil into admixture therewith.
Thus, the device hereof may be a “stand alone” device or may be incorporated into a container for directly mixing the two separate fluids.
The fluid metering and measuring device of the present invention is particularly adapted to regulate the mixture of oil and gasoline for use in a two-stroke engine. The device has a filling chamber with a fluid inlet and a fluid outlet. One-way check valves are disposed in both the fluid inlet and the fluid outlet to prevent backflow. A gradient plunger includes a stem with grasping means external to the filing chamber which is attached to a piston within the chamber. When the stem and attached piston are pulled upwardly, oil from a first compartment flows into the chamber. Gradations or indicia on the stem indicate the amount of oil drawn into the chamber. Preferably, the gradations also indicate the proper amount of oil to be drawn in relation to various amounts of gasoline. When the stem and piston are pushed downwardly, oil flows out of the chamber.
When embodied in a unitary container oil flows into a gasoline-containing compartment. Alternatively, the device is adapted to screw into a normal one-quart oil can from which the requisite amount of oil is extracted and, then, issued into any suitable container.
The gradient stem of the device is configured to enable accurate mixing. In one embodiment the stem has circumferential grooves. In another embodiment the stem has longitudinal grooves for enabling precise metering.
For a more complete understanding of the present invention, reference is made to the following detailed description and accompanying drawings. In the drawings, like reference characters refer to like parts through the several views, in which:
REFERENCES:
patent: 4098125 (1978-07-01), Lee
patent: 4210261 (1980-07-01), Trujilo et al.
patent: 4660424 (1987-04-01), Permer
patent: 4721393 (1988-01-01), Kwast
patent: 4750373 (1988-06-01), Shapiro
patent: 4815861 (1989-03-01), Heppenstiel et al.
patent: 4957008 (1990-09-01), Proni et al.
patent: 5253785 (1993-10-01), Haber et al.
patent: 5320810 (1994-06-01), Al-Mahareeq
patent: 5406995 (1995-04-01), Gantzer
The homepage of Applied Scientific, a lab equipment store. http://www.appliedsci.com/.
Gifford, Krass, Groh Sprinkle, Anderson & Citkowski, P.C.
Loo Dennis
Williams Hezon
LandOfFree
Oil and gas metering and measuring device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Oil and gas metering and measuring device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oil and gas metering and measuring device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2496208