US4823637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic transaxle for automotive vehicle
Assignee: Nissan Motor Co Ltd
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Filing: 1987-07-22
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Granted: 1989-04-25
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Expires: 2007-07-22
Abstract
Abstract An accumulator is disposed in a space defined in the transaxle case adjacent two shafts and/or the intermeshing gears associated therewith. The bore of the accumulator is formed in a web or the like which reinforces the casing at the site where a bearing associated with one of the gears is disposed. The conduits which interconnect the accumulator with the valve body exhibit sufficient flow resistance to obviate the need for separate orifices.
Inventors
- 👤 Hiromi Taguchi
- 👤 Kazuyoshi Iwanaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:17
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/04; F16H61/06; F16H61/065; F16H61/067; F16H61/0003; F16H61/0009; F16H61/068; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2186
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
74 words
A transaxle, comprising: a casing, said casing housing a mechanism which includes a bearing; a reinforcing portion in the housing for reinforcing a site in which said bearing is disposed; and an accumulator, said accumulator having a first bore formed in said reinforcing portion, said bore defining a chamber, a piston reciprocatively disposed in said first bore, and a conduit providing fluid communication between said accumulator and a control circuit associated with said mechanism.
Claim 2
Dependent Claim
74 words
A transaxle, comprising: a casing, said casing housing a mechanism which includes a bearing; a reinforcing portion in the housing for reinforcing a site in which said bearing is disposed; and an accumulator, said accumulator having a first bore formed in said reinforcing portion, said bore defining a chamber, a piston reciprocatively disposed in said first bore, and a conduit providing fluid communication between said accumulator and a control circuit associated with said mechanism.
Claim 3
Dependent Claim
65 words
A transaxle as claimed in claim 1, further comprising: a second reinforcing portion which reinforces a site where a second bearing is disposed; and a second accumulator, said second accumulator having a second bore formed in said second portion and defining a second chamber, a piston reciprocatively disposed in said second bore, and a conduit providing fluid communication between said accumulator and said control circuit.
Claim 4
Dependent Claim
106 words
A transaxle comprising: a casing, said casing housing a mechanism which includes a bearing; a first reinforcing portion in the housing for reinforcing a site in which said bearing is disposed; and an accumulator, said accumulator having a first bore formed in said first reinforcing portion, said bore defining a chamber, a piston reciprocatively disposed in said first bore, and a conduit providing fluid communication between said accumulator and a control circuit associated with said mechanism, said control circuit including a valve body in which a plurality of valves are disposed, said valve body being disposed at a site which is distal from said first bore.
Claim 5
Dependent Claim
106 words
A transaxle comprising: a casing, said casing housing a mechanism which includes a bearing; a first reinforcing portion in the housing for reinforcing a site in which said bearing is disposed; and an accumulator, said accumulator having a first bore formed in said first reinforcing portion, said bore defining a chamber, a piston reciprocatively disposed in said first bore, and a conduit providing fluid communication between said accumulator and a control circuit associated with said mechanism, said control circuit including a valve body in which a plurality of valves are disposed, said valve body being disposed at a site which is distal from said first bore.
Claim 6
Dependent Claim
96 words
An automatic automotive transaxle, comprising: a transaxle case a gear train disposed in said case, said gear train having first and second rotating elements which are operatively interconnected, said rotating elements defining a space in said case; a reinforcing member formed in said case to reinforce the same against loads applied thereto from the rotating element during operation of the gear train; and an accumulator disposed in said space, said accumulator being fluidly communicated with a control system of the gear train via conduits, said accumulator including a bore which is formed in said reinforcing member.
Claim 7
Dependent Claim
96 words
An automatic automotive transaxle, comprising: a transaxle case a gear train disposed in said case, said gear train having first and second rotating elements which are operatively interconnected, said rotating elements defining a space in said case; a reinforcing member formed in said case to reinforce the same against loads applied thereto from the rotating element during operation of the gear train; and an accumulator disposed in said space, said accumulator being fluidly communicated with a control system of the gear train via conduits, said accumulator including a bore which is formed in said reinforcing member.
Claim 8
Dependent Claim
147 words
An automatic automotive transaxle, comprising: a transaxle case; a gear train disposed in said case, said gear train having first and second rotating elements which are operatively interconnected, said rotating elements defining a space in said case; a reinforcing member formed on said case to reinforce the same against loads applied thereto from the rotating elements during operation of the gear train; an accumulator disposed in said space, said accumulator being fluidly communicated with a control system of the gear train via conduits, said accumulator including a bore which is formed in said reinforcing member; and a valve body which forms a part of the gear train control system, said valve body disposed on a site which is located on a side of said case, said valve body and said accumulator being fluidly interconnected by conduits, said conduits exhibiting a flow resistance which provides an orifice effect.
Claim 9
Dependent Claim
147 words
An automatic automotive transaxle, comprising: a transaxle case; a gear train disposed in said case, said gear train having first and second rotating elements which are operatively interconnected, said rotating elements defining a space in said case; a reinforcing member formed on said case to reinforce the same against loads applied thereto from the rotating elements during operation of the gear train; an accumulator disposed in said space, said accumulator being fluidly communicated with a control system of the gear train via conduits, said accumulator including a bore which is formed in said reinforcing member; and a valve body which forms a part of the gear train control system, said valve body disposed on a site which is located on a side of said case, said valve body and said accumulator being fluidly interconnected by conduits, said conduits exhibiting a flow resistance which provides an orifice effect.
Claim 10
Dependent Claim
22 words
A transaxle as claimed in claim 5, wherein said conduits take the form of pipes which are non integral with said case.
Claim 11
Dependent Claim
19 words
A transaxle as claimed in claim 5 wherein said conduits take the form of bores formed in said case.
Claim 12
Dependent Claim
155 words
An automatic automotive transaxle comprising: a transaxle case; a gear train disposed in said case, said gear train having first and second rotating elements which are operatively interconnected, said rotating elements defining a space in said case; a reinforcing member formed in said case to reinforce the same against loads applied thereto from the rotating elements during operation of the gear train; an accumulator disposed in said space, said accumulator being fluidly communicated with a control system of the gear train via conduits, said accumulator including a bore which is formed in said reinforcing member; and a valve body which forms a part of the gear train control system, said valve body being disposed on a site which is located on a surface of said case and having a plurality of valves therein, said valve body and said accumulator being fluidly interconnected by conduits, said conduits exhibiting a flow resistance which provides an orifice effect.
Claim 13
Dependent Claim
155 words
An automatic automotive transaxle comprising: a transaxle case; a gear train disposed in said case, said gear train having first and second rotating elements which are operatively interconnected, said rotating elements defining a space in said case; a reinforcing member formed in said case to reinforce the same against loads applied thereto from the rotating elements during operation of the gear train; an accumulator disposed in said space, said accumulator being fluidly communicated with a control system of the gear train via conduits, said accumulator including a bore which is formed in said reinforcing member; and a valve body which forms a part of the gear train control system, said valve body being disposed on a site which is located on a surface of said case and having a plurality of valves therein, said valve body and said accumulator being fluidly interconnected by conduits, said conduits exhibiting a flow resistance which provides an orifice effect.
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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) | 1992-04-24 | 1992-10-24 | 1993-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-24 | 1996-10-24 | 1997-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-24 | 2000-10-24 | 2001-04-25 | $7700.00 | Window Closed / Lapsed |