US4766857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balancing device for a reciprocating piston engine
Assignee: Automobiles Peugeot SA
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Filing: 1987-09-09
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Granted: 1988-08-30
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Expires: 2007-09-09
Abstract
Abstract The invention relates to the arrangement of a balancing device in a casing, for a reciprocating piston engine, which permits the evacuation of the lubricating oil. The device comprises two balancing shafts (7, 8) disposed in a main part (19) of the casing (11) and each fastened to one or two intermeshing pinions (21, 22) situated in an auxiliary part of the casing. A bottom oil passage (25a) provided between the two parts of the casing enables the pinions, acting as a draining pump, to fully drain the casing.
Inventors
- 👤 Gabriel Laine
- 👤 Henri Zawadzki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:49
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/22; F16F15/26; F16F15/264; F16F15/265; F02; F02B; F02B67/00; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2173; Y10T74/2183; Y10T74/2185; Y10T74/2186
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
119 words
A balancing device for a reciprocating piston internal combustion engine, comprising two balancing shafts disposed in a casing, each provided with a balancing weight and each fastened to one of two intermeshing pinions, characterized in that the casing is divided by a partition into two parts, namely a main part and an auxiliary part, the balancing weights of the shafts being housed in the closed main part of the casing, which is connected by a bottom passage to the auxiliary part containing the two pinions and arranged as a draining gear pump, and in that the auxiliary part comprises a bottom suction zone, into which the bottom passage leads, and a top delivery zone connected to an oil reserve.
Claim 2
Dependent Claim
119 words
A balancing device for a reciprocating piston internal combustion engine, comprising two balancing shafts disposed in a casing, each provided with a balancing weight and each fastened to one of two intermeshing pinions, characterized in that the casing is divided by a partition into two parts, namely a main part and an auxiliary part, the balancing weights of the shafts being housed in the closed main part of the casing, which is connected by a bottom passage to the auxiliary part containing the two pinions and arranged as a draining gear pump, and in that the auxiliary part comprises a bottom suction zone, into which the bottom passage leads, and a top delivery zone connected to an oil reserve.
Claim 3
Dependent Claim
22 words
A balancing device according to claim 1, characterized in that the bottom passage is positioned at the lowest point of the casing.
Claim 4
Dependent Claim
28 words
A balancing device according to claim 1, characterized in that the oil reserve is in the form of a sump serving as reservoir for an engine lubricating pump.
Claim 5
Dependent Claim
26 words
A balancing device according to claim 1, characterized in that the oil reserve is in the form of a separate auxiliary tank feeding a lubricating pump.
Claim 6
Dependent Claim
24 words
A balancing device according to claim 4, characterized in that the bottom suction zone is connected to a low part of an engine sump.
Claim 7
Dependent Claim
29 words
A balancing device according to one of claims 1 to 4, characterized in that the suction zone is also connected to at least one other component of the engine.
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) | 1991-08-30 | 1992-02-29 | 1992-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-30 | 1996-02-29 | 1996-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-30 | 2000-02-29 | 2000-08-30 | $7700.00 | Window Closed / Lapsed |