Lubrication – Automobile crank and gear case service
Reexamination Certificate
1999-12-14
2001-11-27
Michalsky, Gerald A. (Department: 3753)
Lubrication
Automobile crank and gear case service
C137S205000, C184S108000
Reexamination Certificate
active
06321874
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a device for removing lubricating oil, and more particularly to a device for removing engine oil from an engine.
Problems associated with individuals changing and replacing oil by themselves are manifest. For example, most engine oil drain plugs are screwed into the bottom of the internal combustion engine oil pan or sump pan which necessitates crawling under the automobile and at times jacking-up the automobile to gain access to the drain plug.
When the drain plug is manually removed, the lubricating oil initially spurts out of the drain hole quite quickly, and it is not uncommon for the person's hand(s) to become oil-splattered. Under the above circumstances, when the temperature of the oil is high and it splashes to the person's hand, the person can burn his/her hand. When the drain plug is screwed too strongly by the person, a seal for the drain plug is destroyed. On the other hand, when the drain plug is screwed loosely, the oil leaks out.
SUMMARY OF THE INVENTION
In view of the foregoing, it is an object of the present invention to provide a device for removing lubricating oil from an engine that can remove the oil safely without splashing high temperature lubricating oil on workers when the oil is extracted. It is another object of the present invention to provide a device for removing lubricating oil from an engine which can prevent oil leaking out when the drain plug is unscrewed, or damage to the seal when the plug is screwed too tight and also avoid the problem of a person forgetting to screw it in. It is further object of the present invention to provide a device for removing lubricating oil from an engine which can position a tip end portion of the extraction pipe at a bottom surface of an oil pan when an oil strainer is positioned adjacent to the axis of the oil level dipstick tube.
Moreover, it is still another object of the present invention to provide a device for removing lubricating oil from an engine which allows the replaced dirty oil to be inspected by the customers easily. It is still a further object of the present invention to provide a device for removing lubricating oil from an engine whereby almost all of the lubricating oil from the engine oil pan or sump can be extracted.
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Jordan and Hamburg LLP
Michalsky Gerald A.
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