Patent US3965880A successfully refreshed from Google Patents.
US3965880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automotive rear main bearings
Assignee: Individual
•
Filing: 1975-02-18
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Granted: 1976-06-29
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Expires: 1995-02-18
Abstract
Abstract In an automotive internal combustion engine, a rear main bearing is channeled with one or more channels to direct the high pressure output oil flow away from the rear main seal. The channeled oil flow prevents a high pressure buildup adjacent the rear main seal and attendant deterioration thereof and oil leakage therethrough.
Inventors
- 👤 Ronnie L. Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:29
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1025; F16C33/106; F16C33/1065; F01; F01M; F01M1/00; F16C17/00; F16C17/02; F16C17/026; F16C17/10; F16C9/00; F16C9/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
139 words
In an automotive internal combustion engine having a crank shaft mounted within the engine block and including at least a rear main bearing and a rear main seal, the improvement comprising in combination: a. a two part rear main bearing for providing a bearing surface intermediate the engine block and the crank shaft, said bearing including an upper half and a lower half; and b. at least one channel disposed within said lower half bearing for conveying a flow of oil, said channel extending rearwardly from the front longitudinal edge of the bearing surface to a point short of the rear longitudinal edge of the bearing surface; whereby, the oil outflow intermediate the crank shaft and said rear main bearing surface is directed toward the front longitudinal edge of the bearing surface and away from the rear main seal.
Claim 2
Dependent Claim
139 words
In an automotive internal combustion engine having a crank shaft mounted within the engine block and including at least a rear main bearing and a rear main seal, the improvement comprising in combination: a. a two part rear main bearing for providing a bearing surface intermediate the engine block and the crank shaft, said bearing including an upper half and a lower half; and b. at least one channel disposed within said lower half bearing for conveying a flow of oil, said channel extending rearwardly from the front longitudinal edge of the bearing surface to a point short of the rear longitudinal edge of the bearing surface; whereby, the oil outflow intermediate the crank shaft and said rear main bearing surface is directed toward the front longitudinal edge of the bearing surface and away from the rear main seal.
Claim 3
Dependent Claim
18 words
The improvement as set forth in claim 1 including a further channel disposed within said lower half bearing.
Claim 4
Dependent Claim
25 words
The improvement as set forth in claim 2 wherein said channel and said further channel are disposed within opposed halves of said lower half bearing.
Claim 5
Dependent Claim
21 words
The improvement as set forth in claim 3 wherein said channel and said further channel are oriented in a converging relationship.
Claim 6
Dependent Claim
43 words
The improvement as set forth in claim 4 further including at least one radial depression disposed in the front longitudinal edge of said lower half bearing, said depression being in fluid communication with at least one of said channel and said further channel.
Claim 7
Dependent Claim
46 words
The improvement as set forth in claim 5 further including a further radial depression disposed in the front longitudinal edge of said lower half bearing, said depression being in fluid communication with said channel and said further depression being in general coincidence with said further channel.
Claim 8
Dependent Claim
125 words
A bearing for supporting a rotating shaft and including means for introducing a flow of oil from an oil pressure source to the bearing surface of said bearing, said bearing comprising in combination: a. a semi-cylindrical upper half bearing; b. a semi-cylindrical lower half bearing mating with said upper half bearing to define a bearing surface about the shaft; c. at least one channel disposed within the inner bearing surface of said lower half bearing for conveying an outflow of oil from said bearing, said channel extending from the front longitudinal edge of the bearing surface to a point short of the rear longitudinal edge of the bearing surface; whereby, said channel directs the outflow of oil from said bearing toward the front longitudinal edge.
Claim 9
Dependent Claim
125 words
A bearing for supporting a rotating shaft and including means for introducing a flow of oil from an oil pressure source to the bearing surface of said bearing, said bearing comprising in combination: a. a semi-cylindrical upper half bearing; b. a semi-cylindrical lower half bearing mating with said upper half bearing to define a bearing surface about the shaft; c. at least one channel disposed within the inner bearing surface of said lower half bearing for conveying an outflow of oil from said bearing, said channel extending from the front longitudinal edge of the bearing surface to a point short of the rear longitudinal edge of the bearing surface; whereby, said channel directs the outflow of oil from said bearing toward the front longitudinal edge.
Claim 10
Dependent Claim
131 words
A bearing for supporting a rotating shaft and including means for introducing a flow of oil from an oil pressure source to the bearing surface of said bearing, said bearing comprising in combination: a. a semi-cylindrical upper half bearing; b. a semi-cylindrical lower half bearing mating with said upper half bearing to define a bearing surface about the shaft; c. a pair of channels, each of said channels being disposed in opposed halves of said lower half bearing for conveying an outflow of oil from said bearing, each said channel extending from the front longitudinal edge of the bearing surface to a point short of the rear longitudinal edge of the bearing surface; whereby, said pair of channels direct the outflow of oil from said bearing toward the front longitudinal edge.
Claim 11
Dependent Claim
131 words
A bearing for supporting a rotating shaft and including means for introducing a flow of oil from an oil pressure source to the bearing surface of said bearing, said bearing comprising in combination: a. a semi-cylindrical upper half bearing; b. a semi-cylindrical lower half bearing mating with said upper half bearing to define a bearing surface about the shaft; c. a pair of channels, each of said channels being disposed in opposed halves of said lower half bearing for conveying an outflow of oil from said bearing, each said channel extending from the front longitudinal edge of the bearing surface to a point short of the rear longitudinal edge of the bearing surface; whereby, said pair of channels direct the outflow of oil from said bearing toward the front longitudinal edge.
Claim 12
Dependent Claim
36 words
The bearing as set forth in claim 8 including at least one depression disposed within the front longitudinal edge of said lower half bearing in general proximity to the corresponding ends of said pair of channels.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |