Patent US4784751A successfully refreshed from Google Patents.
US4784751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for reclaiming contaminated oil
Assignee: Keller Machine Works
•
Filing: 1986-09-24
•
Granted: 1988-11-15
•
Expires: 2006-09-24
Abstract
Abstract Contaminated oil is reclaimed for fuel use by pumping same through an oil filter into one side of a divided tank then through a heater to burn off water and antifreeze and then into the other side of the divided tank where the oil is blended with other clean oil, such as diesel fuel, which is then pumped through a water separator and another oil filter into a fuel supply tank from which it is pumped and used for blending. The divided tank is mounted on wheels and carries the various components such as pumps, heater, valves, piping, filter and so forth.
Inventors
- 👤 Ronald R. McGehee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:26
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/18; B01D35/185; C; C10; C10M; C10M175/00; C10M175/0025; C10M175/0033; F; F02; F02B; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
64 words
In a method of reclaiming contaminated oil wherein some solid particles have been removed by means of an oil filter and contaminants, such as antifreeze and water, have been removed such as by vaporization in a heater, the improvement comprising: circulating said contaminated oil and blending same in a container with an uncontaminated supply of oil which is delivered from the reclaimed uncontaminated supply.
Claim 2
Dependent Claim
29 words
The method claimed in claim 1 wherein said blended oil is directed through a means for separating water and through a filter means into said uncontaminated, reclaimed fuel supply.
Claim 3
Dependent Claim
41 words
The method claimed in claim 1 wherein said contaminated oil is blended in the container by means of a blender which receives and blends both contaminated and uncontaminated oil by directing same through a series of baffles arranged in a housing.
Claim 4
Dependent Claim
31 words
The method claimed in claim 3 wherein the contaminated oil is directed into said blender by means of a venturi which pulls uncontaminated oil into the blender from the uncontaminated container.
Claim 5
Dependent Claim
40 words
The method claimed in claim 1 wherein the contaminated oil is moved into a first container which fills to a preselected quantity and is thereafter moved into the second tank which is the container in which the oil is blended.
Claim 6
Dependent Claim
37 words
The method claimed in claim 5 wherein the flow of contaminated and uncontaminated oil is controlled by manually operated valves which are selectively operated to cause the flow of the contaminated and uncontaminated oil into the blender.
Claim 7
Independent Claim
114 words
A method of reclaiming contaminated oil comprising: moving the contaminated oil through an oil filter which removes solid particles down to micron size, moving the oil from the oil filter to a first container and thence from said first container to a heater, moving said oil through said heater to remove contaminants such as antifreeze and water and other unwanted chemicals which will vaporize, moving said oil from said heater into a second container in which there is a blender, and blending said oil in said second container with an uncontaminated supply of oil which may be delivered from the reclaimed uncontaminated supply, delivering said blended oil to a storage container for uncontaminated oil.
Claim 8
Dependent Claim
29 words
The method in claim 7 comprising after blending sail oil: pumping said oil blend through a water separator to an oil filter and then into the uncontaminated fuel supply.
Claim 9
Dependent Claim
55 words
The method claimed in claim 7 wherein said flow of oil is selectively, manually interrupted by a manually controlled first valve means which prevents the blended oil from reaching the reclaimed uncontaminated supply, and directing said blended oil through a second valve means which recirculates the oil continuously into the blender from the second container.
Claim 10
Dependent Claim
19 words
The method claimed in claim 7 wherein said blender and said heater are both located inside said second container
References Cited (Backward Citations)
US1866970A
Cited
US1717096A
Cited
US3249438A
Cited
US3332856A
Cited
US3341449A
Cited
US4006084A
Cited
US3990963A
Cited
US4289578A
Cited
US4189351A
Cited
US4227969A
Cited
US4289583A
Cited
US4179019A
Cited
US4213845A
Cited
US4269695A
Cited
US4411774A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-15 | 1992-05-16 | 1992-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-15 | 1996-05-16 | 1996-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-15 | 2000-05-16 | 2000-11-15 | $7700.00 | Window Closed / Lapsed |