Patent Application
20050072489
This invention relates generally to lubricating systems.
Two-cycle engines were developed as a lower cost, lightweight alternative to four-cycle engines. Two-cycle engines are commonly employed to power outboard engines, chainsaws, lawn mowers, motorcycles, weed eaters, hedge trimmers, portable blowers, power generators, hydraulic power units, or any other application where lightweight, high RPM power is required. Two-cycle gasoline engines, unlike four-cycle gasoline engines, do not have oil filled crankcases as a means of lubricating the moving parts of the engine. Rather, two-cycle engines use a blended mixture of fuel and lubricating oil as a means of powering the engine and simultaneously lubricating various parts of the engine. This blended fuel mixture requires one of two engine setups. One setup pre-blends the fuel and oil before putting it in the engine. Also, a more current trend in two-cycle engine design keeps the fuel and oil separate in their own reservoirs, and blends the fuel and oil during operation. In this second setup, the ratio of fuel to oil may depend upon power requirements. Both of these technologies have created a variety of problems common to any engine.
In the instance where an engine design does not employ pre-blended fuel, rather employing separate fuel and oil reservoirs, additional problems have developed. First, the oil reservoir must be independently checked to make sure that it contains an adequate amount of oil. As the viewing area for checking the oil level is often located in an undesirable location, an operator is required to contort themselves in awkward positions to accomplish this task. Often times, this inconvenience means that the oil level goes unchecked, which potentially leads to running the engine on no oil.
The filling of the oil reservoir requires additional tools, more specifically, funnels, spouts, rags or other such devices used to aid in filling the oil reservoir. The use of funnels to fill the oil reservoir creates a couple of problems. First, the portion of the funnel located within the reservoir at the time of filling displaces a significant volume of oil. Consequently, when the funnel is removed, the oil volume is reduced by a volume equivalent to the funnel, thus a true full reservoir is not attained. Further, the funnel's bulky shape makes it difficult to determine when the oil reservoir is nearing full, often yielding in overfilling the oil reservoir. Regardless of whether an under-filled or over-filled reservoir is attained, additional problems result from the current oil reservoir technology.
An additional problem with current engine lubrication technology is the potential of harm to the engine itself. More specifically, in instances where a reservoir is over-filled, oil residue is left upon the surface of the engine around the entrance to the reservoir. Consequently, dust and other foreign material, hazardous to internal engine components, collects around the opening to the reservoir. This combination of foreign material and oil can be introduced into the oil reservoir upon opening the reservoir or working around an open reservoir. Likewise, funnels and other such devices employed in filling the reservoir also collect dust that is potentially passed into the oil reservoir during a subsequent use. Thus, the state of current lubrication technology actually serves to increase the potential for engine harm. This problem is magnified when the environment in which these engines are employed is considered. For example, chainsaws being used in forests produce vast quantities of sawdust, or motorcycles traveling along dusty roads.
Aside from the ease of use and potential damage to the engine, current engine lubrication technology is also potentially damaging to other assets around the engine. Primarily, any spilled oil or blended fuel/oil not only attaches itself to the engine, but also to anything else it happens to contact. The fuel/oil has a tendency to undesirably attach itself to other assets in the area of the engine. For example, in a marine environment oil may attach itself to fishing gear, water-skiing equipment, SCUBA gear or other such assets. The oil is often detrimental to the other assets in that it causes fouling or actual deterioration of the assets itself.
Aside from just the physical or tangible assets in the area of which the engine is employed, there are environmental concerns as well. Spillage or oil remnants are often deposited in the environment. This oil spillage in a marine application creates oil slicks on the surface of the water, damaging both surface and subsurface marine plants and animals. Further, oil spillage on dry land is absorbed into the soil potentially harming both plants and animals. Further, oil spillage is potentially damaging to water reservoirs and aquifers.
The various problems of lubrication discussed above are not limited to internal combustion engines. Rather, all machine parts or elements have similar lubrication problems or considerations. More specifically, machine parts, including milling machines, presses, drills, fabrication units, lathes, agricultural equipment, construction equipment, earth moving equipment and other mechanical devices all require sufficient lubrication in order to function properly, and all are subject to the above discussed lubrication concerns and problems.
Therefore, there exists a need to provide a clean lubricating oil or machine element lubricating system.
The present invention comprises a disposable or reusable lubricating oil container system wherein the disposable/reusable oil container functions as the primary oil reservoir for engines or other machine parts. The container snaps, plugs into or attaches to a self-tapping repository chamber connected to a lubrication system of an engine or other machine part. The container has a neck portion defining an opening for transferring lubricating oil. The oil is transferred from the container to an engine or other machine part via a sealing unit attached to the neck. Additionally, the container can be an existing retail container for motor and engine lubricants or can be specifically designed for a given purpose.
In accordance with further aspects of the invention, a safety seal and cap are employed over the neck.
In accordance with other aspects of the invention, the container includes a graduated section or a viewing section at its surface.
In accordance with still further aspects of the invention, a strap employed secures the container to the carrier.
In accordance with yet other aspects of the invention, the sealing unit attaches to the container by a male or female coupling unit.
In accordance with other aspects of the invention, an attachment ring secures the sealing unit to the container.
In accordance with still further aspects of the invention, carrier attachments secure the carrier to an engine or machine part for damping vibration.
In accordance with yet other aspects of the invention, the carrier is a heat shield for the container.
As will be readily appreciated from the foregoing summary, the invention provides a unique disposable lubricating cartridge system.
The preferred and alternative embodiments of the present invention are described in detail below with reference to the following drawings.
This invention preferably functions with engines employing either premixed fuel/oil or separate fuel and oil reservoir engine arrangements. However, this invention is employable with any machine part. For clarity, only the internal combustion engine with a separate reservoir arrangement is illustrated here. More specifically,
The overall size, shape, and design of the container system 20 is a function of the environment in which the system is employed. The container 24 can be an existing retail container for motor or engine lubricants or can be designed for a specific purpose. For example, a small container is likely to be employed with devices where space and weight are a factor, e.g., chainsaws and hand-held lawn equipment. Further, where the employment environment permits, larger, more typical container geometries may be implemented. Additionally, the container 24 can have a graduated section and/or a viewing section located on a surface of the container 24. In this manner, a visual inspection of the container 24 gives an oil level reading.
In the embodiment shown in
The neck 38 provides an opening to the inside of the container 24. The neck 38 is capped by a seal 52 prior to operation. Also, the neck 38 is designed to receive the mated sealing unit 44a. The sealing unit 44a houses a penetrating tube 42a and a vent 40 acting as a self-tapping fluid transfer system. The penetrating tube 42a is designed such that upon insertion of the sealing unit 44a into the container 24, the seal 52 is broken. The penetrating tube 42a further serves as the transfer structure for passing the lubricating oil from the container 24 to the reservoir 70, directly into a fuel/oil blending structure (not shown) if no reservoir is employed, or lubrication site of another machine element. In the preferred embodiment, the sealing unit 44a is preferably constructed from hardened rubber. However, other materials, such as polymer-based plastic and resin, are considered within the scope of this invention. When the sealing unit 44a is inserted into the neck 38, the vent 40 is in fluid communication with a cartridge vent tube 30 located on the inside of the container 24. The cartridge vent tube 30 provides air to enter the container 24 in order to equalize pressure within the container 24 as the lubricating oil is used up.
The container system 20 also includes a carrier 48 for securing the container 24 to the engine 22. However, the container system 20 can also be attached to a device employing the engine 22 or any other machine part without a carrier if desired. The carrier 48 includes locking arms 32, each with a locking arm point 60a. The locking arm points 60 are received by respective locking recesses 62 in a manner that keeps the container 24 from moving excessively. The locking arm points 60a are located on longitudinally disposed ends of the carrier 48. For example, the container can slide, snap or plug into or otherwise attach itself to the carrier. The locking arm points 60 are located on longitudinally disposed ends of the carrier 48. For example, the locking recesses 62 may run longitudinally along the sides of container 24, in a direction parallel to the central access of the container 24. The carrier 48 is designed to mate with the locking recesses 62 of the container 24 such that the carrier 48 securely holds the container 24.
Material choice for the carrier is variable. The carrier is constructed of material allowing the locking arms 32 to elastically deform while inserting the container 24 into the carrier 48 while maintaining substantially rigid characteristics. Additionally, as the carrier acts as a heat shield for the container, the material choice for the carrier preferably is thermally resistant. The carrier 48, in the preferred embodiment, is constructed of a thermal-resistant, polymer-based material, such as a thermo-set plastic. However, any other material capable of elastic deformation while maintaining substantial rigidity and thermal resistance is considered within the scope of this invention. For example, metallic, nonmetallic, or carbon-based materials, ceramics, alloys or composites thereof are employable as carrier 48 material. However, other container-attaching methods are considered within the scope of this invention.
The carrier 48 includes carrier attachments 34 for affixing the carrier 48 to another rigid body, for example, an engine 22 or a housing. The attachments 34 serve the additional purpose of damping any vibration. As such, any combination of frictional fastening devices such as bolts, screws, rivets, pins, or the like with any known damping structure such as rubber bushings, plastic bumpers, or spring dampers are examples of attachments 34.
The transfer tube 42a is connected to the reservoir 70 or other machine element and is in fluid communication with reservoir tubes 72. The reservoir 70 is illustrative of the remaining lubrication system of an engine. For clarity purposes, the specifics of any engine components have been left out of the illustration. This invention is employable with any engine arrangement or lubrication system structure.
The safety seal 52 and a cap (not shown) are located at the end of the neck 38. The cap is typically threaded on the neck and serves as a primary containment device for the lubricating oil. The seal 52 serves a secondary containment device for the oil. Typically the seal is a metallic foil that adheres to the terminal end of the neck 38. However, other seal 52 materials can be used, for example, rubber or polymer based substances.
While the preferred embodiment of the invention has been illustrated and described, as noted above, many changes can be made without departing from the spirit and scope of the invention. Accordingly, the scope of the invention is not limited by the disclosure of the preferred embodiment. Instead, the invention should be determined entirely by reference to the claims that follow.
This application is a continuation of application Ser. No. 09/909,615, filed Jul. 20, 2001, which claims priority from U.S. Provisional Application No. 60/272,372, filed Feb. 27, 2001, and U.S. Provisional Application No. 60/275,587, filed Mar. 12, 2001.
| Number | Date | Country | |
|---|---|---|---|
| 60272372 | Feb 2001 | US | |
| 60275587 | Mar 2001 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 09909615 | Jul 2001 | US |
| Child | 10996497 | Nov 2004 | US |
