US3908797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Common drainage system and apparatus for engine oil sump and for oil filter of engine
Assignee: Fiat Allis Europe SpA
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Filing: 1974-03-19
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Granted: 1975-09-30
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Expires: 1994-03-19
Abstract
Abstract A drainage system and apparatus for use with the lubricating system of an engine which provides a common drain for the engine crankcase sump and for the engine lubricating oil by-pass filter in a manner which insures against mixing of the contaminants in the filter with the engine oil in the sump. The drainage system is particularly useful in connection with the engine lubrication system of vehicles such as road construction vehicles, agricultural vehicles, tractors, or the like. The common drainage manifold used in the aforementioned drainage system is preferably mounted on the crankcase guard or ''''bellypan'''' usually provided with such vehicles and at a location where the engine crankcase sump and the lubricating oil by-pass filter may be drained simultaneously with ease and simplicity, and with all oil and sludge draining to the outside of the vehicle.
Inventors
- 👤 James M Schnepp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:14
CPC Classifications
F; F01; F01M; F01M11/00; F01M11/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86815
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
241 words
In combination, an engine, a lubricating circuit for said engine including means for supplying a lubricating fluid to said engine, said engine including a crankcase providing a sump for lubricating fluid, a filter connected in a fluid flow path of said lubricating circuit for filtering impurities from lubricating fluid flowing in said circuit, a first drain line distinct from said lubricating circuit and connected to said sump for draining said sump, a second drain line distinct from said lubricating circuit and connected to said filter for draining a fluid sludge or the like which has collected in said filter, a common drain manifold for said sump and for said filter, said common drain manifold including a drain outlet, said first and said second drain lines being connected in fluid communication with said common drain manifold, a drain plug received in said manifold in plugging relation to said drain outlet whereby to prevent drainage from said sump and from said filter through said drain outlet, said plug being movable out of plugging relation to said drain outlet to permit drainage from said sump and from said filter through said drain outlet, and sealing means between said plug and a surface of said manifold for fluidly isolating said first and said second drain lines from each other when said plug is in plugging relation to said drain outlet, whereby to prevent contamination of lubricating fluid in said sump by sludge from said filter.
Claim 2
Dependent Claim
241 words
In combination, an engine, a lubricating circuit for said engine including means for supplying a lubricating fluid to said engine, said engine including a crankcase providing a sump for lubricating fluid, a filter connected in a fluid flow path of said lubricating circuit for filtering impurities from lubricating fluid flowing in said circuit, a first drain line distinct from said lubricating circuit and connected to said sump for draining said sump, a second drain line distinct from said lubricating circuit and connected to said filter for draining a fluid sludge or the like which has collected in said filter, a common drain manifold for said sump and for said filter, said common drain manifold including a drain outlet, said first and said second drain lines being connected in fluid communication with said common drain manifold, a drain plug received in said manifold in plugging relation to said drain outlet whereby to prevent drainage from said sump and from said filter through said drain outlet, said plug being movable out of plugging relation to said drain outlet to permit drainage from said sump and from said filter through said drain outlet, and sealing means between said plug and a surface of said manifold for fluidly isolating said first and said second drain lines from each other when said plug is in plugging relation to said drain outlet, whereby to prevent contamination of lubricating fluid in said sump by sludge from said filter.
Claim 3
Dependent Claim
17 words
The combination defined in claim 1 in which said drain plug is detachably removable from said manifold.
Claim 4
Dependent Claim
30 words
The combination defined in claim 1 in which said plug and said surface of said manifold define cooperating members and said sealing means is carried by one of said members.
Claim 5
Dependent Claim
58 words
The combination defined in claim 3 in which said plug is provided with an annular countersunk recess, and an O-ring is received in said recess, said O-ring sealing against said surface of said manifold to fluidly isolate said first and said second drain lines from each other when said plug is in plugging relation to said drain outlet.
Claim 6
Dependent Claim
95 words
The combination defined in claim 1 in which said engine is mounted on the chassis of a vehicle and comprising a crankcase guard mounted on said chassis in underlying relation to said engine to protect and shield said crankcase against rocks and the like along the path of travel of said vehicle, said manifold being mounted on said crankcase guard and so positioned as to permit access to said drain plug and to permit drainage from said drain outlet of said manifold when said drain plug is not in plugging relation to said drain outlet.
Claim 7
Dependent Claim
120 words
The combination defined in claim 1 in which said engine is mounted on the chassis of a vehicle and comprising a crankcase guard mounted on said chassis in underlying relation to said engine to protect and shield said crankcase against rocks and the like along the path of travel of said vehicle, a fluid outlet opening in said crankcase guard, said manifold being mounted on an inner surface of said crankcase guard in overlying relation to said fluid outlet opening and so positioned as to permit access to said drain plug and to permit drainage through said fluid outlet opening from said drain outlet of said manifold when said drain plug is not in plugging relation to said drain outlet.
Claim 8
Dependent Claim
251 words
In combination, an engine, a lubricating circuit for said engine including means for supplying a lubricating fluid to said engine, said engine including a crankcase providing a sump for lubricating fluid, a filter connected in a fluid flow path of said lubricating circuit for filtering impurities from lubricating fluid flowing in said circuit, a first drain line distinct from said lubricating circuit and connected to said sump for draining said sump, a second drain line distinct from said lubricating circuit and connected to said filter for draining a fluid sludge or the like which has collected in said filter, a common drain manifold for said sump and for said filter, said common drain manifold including a drain passage having a drain outlet, said first and said second drain lines being connected in fluid communication with said drain passage, a plug received in said drain passage in plugging relation to said drain outlet whereby to prevent drainage from said sump and from said filter through said drain outlet, said plug being movable out of plugging relation to said drain outlet to permit drainage from said sump and from said filter through said drain outlet, and means establishing sealing engagement between said plug and the bounding surface of said drain passage contiguous said plug for fluidly isolating said first and said second drain lines from each other when said plug is in plugging position in said drain passage, whereby to prevent contamination of lubricating fluid in said sump by sludge from said filter.
Claim 9
Dependent Claim
251 words
In combination, an engine, a lubricating circuit for said engine including means for supplying a lubricating fluid to said engine, said engine including a crankcase providing a sump for lubricating fluid, a filter connected in a fluid flow path of said lubricating circuit for filtering impurities from lubricating fluid flowing in said circuit, a first drain line distinct from said lubricating circuit and connected to said sump for draining said sump, a second drain line distinct from said lubricating circuit and connected to said filter for draining a fluid sludge or the like which has collected in said filter, a common drain manifold for said sump and for said filter, said common drain manifold including a drain passage having a drain outlet, said first and said second drain lines being connected in fluid communication with said drain passage, a plug received in said drain passage in plugging relation to said drain outlet whereby to prevent drainage from said sump and from said filter through said drain outlet, said plug being movable out of plugging relation to said drain outlet to permit drainage from said sump and from said filter through said drain outlet, and means establishing sealing engagement between said plug and the bounding surface of said drain passage contiguous said plug for fluidly isolating said first and said second drain lines from each other when said plug is in plugging position in said drain passage, whereby to prevent contamination of lubricating fluid in said sump by sludge from said filter.
Claim 10
Dependent Claim
17 words
The combination defined in claim 7 in which said drain plug is detachably removable from said manifold.
Claim 11
Dependent Claim
20 words
The combination defined in claim 7 in which said means is a sealing element carried by one of said members.
Claim 12
Dependent Claim
63 words
The combination defined in claim 9 in which said plug is provided with an annular countersunk recess, and said sealing element is an O-ring is received in said recess, said O-ring sealing against said surface of said drain passage to fluidly isolate said first and said second drain lines from each other when said plug is in plugging position in said drain passage.
Claim 13
Dependent Claim
95 words
The combination defined in claim 7 in which said engine is mounted on the chassis of a vehicle and comprising a crankcase guard mounted on said chassis in underlying relation to said engine to protect and shield said crankcase against rocks and the like along the path of travel of said vehicle, said manifold being mounted on said crankcase guard and so positioned as to permit access to said drain plug and to permit drainage from said drain outlet of said manifold when said drain plug is not in plugging relation to said drain outlet.
Claim 14
Dependent Claim
120 words
The combination defined in claim 7 in which said engine is mounted on the chassis of a vehicle and comprising a crankcase guard mounted on said chassis in underlying relation to said engine to protect and shield said crankcase against rocks and the like along the path of travel of said vehicle, a fluid outlet opening in said crankcase guard, said manifold being mounted on an inner surface of said crankcase guard in overlying relation to said fluid outlet opening and so positioned as to permit access to said drain plug and to permit drainage through said fluid outlet opening from said drain outlet of said manifold when said drain plug is not in plugging relation to said drain outlet.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |