Patent US3641990A successfully refreshed from Google Patents.
US3641990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine
Assignee: Individual
•
Filing: 1970-02-20
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Granted: 1972-02-15
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Expires: 1990-02-20
Abstract
Abstract An internal combustion engine, either two-stroke or four-stroke, having sealed lubricant chambers at the locations of at least the crankshaft and the crankpin and/or the gudgeon pin. Where practical, certain bearing surfaces of the engine may comprise dry lubricating material.
Inventors
- 👤 Richard Furneaux Kinnersly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:18
CPC Classifications
F; F01; F01M; F01M9/00; F01M9/12; Y; Y10; Y10S; Y10S384/00; Y10S384/90; Y10S384/907
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
220 words
In a reciprocating piston engine comprising a cylinder, a piston mounted for reciprocating sliding movement within said cylinder, a reciprocating connecting rod rotatably connected with said piston, a crankshaft, a crankpin rotatably connecting said connecting rod with a crankweb of said crankshaft, a housing, said crankshaft being rotatably mounted in said housing, the improvement comprising: a. a first lubricant storage chamber extending about said crankshaft and defined between said crankshaft and said housing, b. first bearing means rotatably mounting said crankshaft in said housing and located in said first lubricant storage chamber, c. lubricant prestored in said first lubricant storage chamber and in direct contact with said first bearing means to permanently lubricate said first bearing means, d. means sealing the ends of said first lubricant storage chamber to retain said lubricant permanently therein, e. a second lubricant storage chamber extending about said crankpin and defined between said crankpin and a member rotatable with respect to said crankpin, f. second bearing means mounting said crankpin for rotation in said member and located in said lubricant storage chamber, g. lubricant prestored in said second lubrIcant storage chamber and in direct contact with said second bearing means to permanently lubricate said second bearing means, and h. means sealing the ends of said second lubricant storage chamber to permanently retain said lubricant therein.
Claim 2
Dependent Claim
220 words
In a reciprocating piston engine comprising a cylinder, a piston mounted for reciprocating sliding movement within said cylinder, a reciprocating connecting rod rotatably connected with said piston, a crankshaft, a crankpin rotatably connecting said connecting rod with a crankweb of said crankshaft, a housing, said crankshaft being rotatably mounted in said housing, the improvement comprising: a. a first lubricant storage chamber extending about said crankshaft and defined between said crankshaft and said housing, b. first bearing means rotatably mounting said crankshaft in said housing and located in said first lubricant storage chamber, c. lubricant prestored in said first lubricant storage chamber and in direct contact with said first bearing means to permanently lubricate said first bearing means, d. means sealing the ends of said first lubricant storage chamber to retain said lubricant permanently therein, e. a second lubricant storage chamber extending about said crankpin and defined between said crankpin and a member rotatable with respect to said crankpin, f. second bearing means mounting said crankpin for rotation in said member and located in said lubricant storage chamber, g. lubricant prestored in said second lubrIcant storage chamber and in direct contact with said second bearing means to permanently lubricate said second bearing means, and h. means sealing the ends of said second lubricant storage chamber to permanently retain said lubricant therein.
Claim 3
Dependent Claim
156 words
In a reciprocating piston engine as set forth in claim 1, further comprising a gudgeon pin rotatably connecting said connecting rod with said piston, and third bearing means mounting said connecting rod for rotation about said gudgeon pin, the improvement according to which said third bearing means is mounted in an annular chamber defined about said gudgeon pin and in said connecting rod, and said engine comprises: a. a third lubricant storage chamber defined internally of said gudgeon pin, b. lubricant prestored in said lubricant storage chamber, c. port means defining direct communication between said third lubricant storage chamber and said annular chamber so that said third bearing means is in direct communication with said lubricant to be permanently lubricated thereby, d. means sealing the ends of said third lubricant storage chamber to retain said lubricant permanently therein, and e. means sealing the ends of said annular chamber to prevent the escape of said lubricant therefrom.
Claim 4
Dependent Claim
12 words
second gear means in drivable connection with said first gear means, and
Claim 5
Dependent Claim
12 words
second gear means in drivable connection with said first gear means, and
Claim 6
Dependent Claim
94 words
In a reciprocating piston engine as set forth in claim 1, further comprising a valve mounted for reciprocating movement relative a valve seat, and valve-actuating mechanism for actuating said valve in timed relation to movement of said piston in said cylinder thereby to control charging and exhaust of said cylinder, the improvement according to which: a. said valve has its stem extending into said first lubricant storage chamber, b. said valve-actuating mechanism is located in said first lubricant storage chamber in direct contact with said lubricant stored therein thereby to be permanently lubricated thereby.
Claim 7
Dependent Claim
64 words
cam means rotatably driven by said second gear means and adapted to impart reciprocating motion to said valve stem, b. said housing comprises a first housing part and a cover plate therefor between which said first lubricant storage chamber is defined, and c. said second gear means is rotatably mounted between said first housing part and said cover plate by shaft means bearing therein.
Claim 8
Dependent Claim
64 words
cam means rotatably driven by said second gear means and adapted to impart reciprocating motion to said valve stem, b. said housing comprises a first housing part and a cover plate therefor between which said first lubricant storage chamber is defined, and c. said second gear means is rotatably mounted between said first housing part and said cover plate by shaft means bearing therein.
Claim 9
Dependent Claim
117 words
In a reciprocating piston engine as set forth in claim 2, further comprising a valve mounted for reciprocating movement relative a valve seat, and valve-actuating mechanism for actuating said valve in timed relation to movement of said piston in said cylinder thereby to control charging and exhaust of said cylinder, the improvement according to which: a. said valve has its stem extending into said first lubricant storage chamber, b. said valve-actuating mechanism is located in said first lubricant storage chamber in direct contact with said lubricant stored therein thereby to be permanently lubricated thereby, c. and said engine comprises means sealing about said stem to prevent the escape therepast of lubricant from said first lubricant storage chamber.
Claim 10
Dependent Claim
70 words
In a reciprocating piston engine as set forth in claim 1, further comprising a reciprocating valve for controlling flow through an inlet or exhaust port of said cylinder, and valve-actuating mechanism for said valve, the improvement comprising a sealed lubricant storage chamber in which said valve-actuating mechanism is located and in which lubricant is prestored and permanently retained therein in direct contact with said mechanism to permanently lubricate said mechanism.
Claim 11
Dependent Claim
70 words
In a reciprocating piston engine as set forth in claim 2, further comprising a reciprocating valve for controlling flow through an inlet or exhaust port of said cylinder, and valve-actuating mechanism for said valve, the improvement comprising a sealed lubricant storage chamber in which said valve-actuating mechanism is located and in which lubricant is prestored and permanently retained therein in direct contact with said mechanism to permanently lubricate said mechanism.
Claim 12
Dependent Claim
29 words
A reciprocating piston engine as set forth in claim 4, wherein the running surfaces between said piston and said cylinder are of a material capable or running without lubrication.
Claim 13
Dependent Claim
29 words
A reciprocating piston engine as set forth in claim 6, wherein the running surfaces between said piston and said cylinder are of a material capable of running without lubrication.
Claim 14
Dependent Claim
21 words
In a reciprocating piston engine as set forth in claim 4, the improvement according to which: a. said valve-actuating mechanism comprise
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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) | 1975-02-14 | 1975-08-16 | 1976-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-14 | 1979-08-16 | 1980-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-14 | 1983-08-16 | 1984-02-15 | $7700.00 | Window Closed / Lapsed |