Patent US4450734A successfully refreshed from Google Patents.
US4450734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission apparatus for a four-wheel drive motor vehicle
Assignee: Subaru Corp
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Filing: 1981-10-05
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Granted: 1984-05-29
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Expires: 2001-10-05
Abstract
Abstract A transmission apparatus for a motor vehicle having an internal combustion engine transversely disposed in the vehicle at an end portion thereof, a transmission transversely disposed and connected to the crankshaft of the engine at one end portion of the transmission, a final reduction gear engaged with an output gear of the transmission, the output gear being mounted on an output shaft of the transmission adjacent an end of the engine, a differential secured to a side of the final reduction gear, and an axle connected to the differential for one pair of the vehicle wheels. A transfer device is connected to another portion of the output shaft of the transmission. The transfer device comprises a transfer shaft, a gear train provided at the other end portion of the transmission, and a clutch device for engaging the gear train with the output shaft of the transmission. A propeller shaft is connected to the transfer device for driving other axles of the vehicle for the other pair of vehicle wheels for four-wheel drive.
Inventors
- 👤 Sadao Makishima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:57
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/34; B60K17/344; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19074
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
196 words
A transmission apparatus, for a motor vehicle defining a longitudinal direction and having an internal combustion engine with a crankshaft transversely disposed in said vehicle adjacent an end portion of the latter, comprising a transmission transversely disposed in said vehicle and operatively connected to the crankshaft of said engine at one end portion of said transmission, said transmission having an output shaft and an output gear mounted on said output shaft at a position thereof adjacent to an end of said engine, a final reduction gear engages with said output gear of said transmission, a differential is secured to a side of said final reduction gear, axles, adapted for a pair of wheels of the vehicle, are connected to the differential, a transfer device provided at another end portion of said transmission, said transfer device comprising, a gear train provided at said another end portion of said transmission, and a clutch means for operatively engaging said gear train with said output shaft of said transmission, and a propeller shaft means operatively connected to said gear train of said transfer device for driving other axles adapted for another pair of wheels of the vehicle and four-wheel drive.
Claim 2
Dependent Claim
196 words
A transmission apparatus, for a motor vehicle defining a longitudinal direction and having an internal combustion engine with a crankshaft transversely disposed in said vehicle adjacent an end portion of the latter, comprising a transmission transversely disposed in said vehicle and operatively connected to the crankshaft of said engine at one end portion of said transmission, said transmission having an output shaft and an output gear mounted on said output shaft at a position thereof adjacent to an end of said engine, a final reduction gear engages with said output gear of said transmission, a differential is secured to a side of said final reduction gear, axles, adapted for a pair of wheels of the vehicle, are connected to the differential, a transfer device provided at another end portion of said transmission, said transfer device comprising, a gear train provided at said another end portion of said transmission, and a clutch means for operatively engaging said gear train with said output shaft of said transmission, and a propeller shaft means operatively connected to said gear train of said transfer device for driving other axles adapted for another pair of wheels of the vehicle and four-wheel drive.
Claim 3
Dependent Claim
61 words
The transmission apparatus for a motor vehicle according to claim 1 wherein said transfer device further comprises, a transfer shaft disposed parallel to said output shaft of said transmission, said gear train includes one gear mounted on said transfer shaft and another gear mounted on said output shaft, and bevel gears operatively connecting said propeller shaft means to said transfer shaft.
Claim 4
Dependent Claim
59 words
The transmission apparatus for a motor vehicle according to claim 2, wherein said one gear is jointly rotatably mounted on one of said shafts, and said another gear is freely rotatably mounted on the other of said shafts and engages said one gear, and said clutch means is for jointly rotatably engaging said another gear with said other shaft.
Claim 5
Dependent Claim
27 words
The transmission apparatus for a motor vehicle according to claim 3, wherein said one shaft is said transfer shaft and said other shaft is said output shaft.
Claim 6
Dependent Claim
40 words
The transmission apparatus for a motor vehicle according to claim 1, further comprising a rear drive shaft extending substantially parallel to the longitudinal direction of the vehicle, said rear drive shaft connects said propeller shaft means to said gear train.
Claim 7
Dependent Claim
33 words
The transmission apparatus for a motor vehicle according to claim 5, wherein said gear train includes a meshing bevel gear pair having one bevel gear jointly rotatably connected with said rear drive shaft.
Claim 8
Dependent Claim
65 words
The transmission apparatus for a motor vehicle according to claim 6, wherein said transfer device further comprises, a transfer shaft disposed parallel to said output shaft of said transmission and operatively connected thereto by said gear train and said clutch means, and said bevel gear pair includes another bevel gear jointly rotatably connected to said transfer shaft, and said bevel gears mesh with each other.
Claim 9
Dependent Claim
31 words
The transmission apparatus for a motor vehicle according to claim 7, wherein said another bevel gear is jointly rotatably connected to said transfer shaft adjacent said output gear of said transmission.
Claim 10
Dependent Claim
74 words
The transmission apparatus for a motor vehicle according to claim 2, further comprising a rear drive shaft extending substantially parallel to the longitudinal direction of the vehicle, said rear drive shaft is connected to said propeller shaft means and to one of said bevel gears, another of said bevel gears is connected to said transfer shaft and engages with said one bevel gear, said rear drive shaft is substantially perpendicular to said transfer shaft.
Claim 11
Dependent Claim
46 words
The transmission apparatus for a motor vehicle according to claim 1 wherein one of the gears of said gear train operatively cooperates with said clutch means, said one gear is mounted adjacent an end of said output shaft constituting said another end portion of said transmission.
Claim 12
Dependent Claim
74 words
The transmission apparatus for a motor vehicle according to claim 1, wherein said transmission includes an input shaft in parallel to said output shaft and operatively connected to said crankshaft at said one end portion of said transmission, and a plurality of transmission gear trains operatively connected to said input and output shafts between said end portions of said transmission so as to provide a plurality of gear ratios, respectively, at said output shaft.
Claim 13
Dependent Claim
35 words
The transmission apparatus for a motor vehicle according to claim 1, wherein said end portions of said transmission are aligned with respect to each other substantially transversely relative to the longitudinal direction of the vehicle.
Claim 14
Dependent Claim
25 words
The transmission apparatus for a motor vehicle according to claim 1, wherein said another end portion is at an end portion of said output shaft.
Claim 15
Dependent Claim
143 words
A transmission apparatus, for a motor vehicle defining a longitudinal direction and having an internal combustion engine with a crankshaft transversely disposed in said vehicle adjacent an end portion of the latter, comprising a transmission transversely disposed in said vehicle and operatively connected to the crankshaft of said engine at one end portion of said transmission, said transmission having an output shaft and an output gear mounted on said output shaft at a first portion thereof adjacent to an end of said engine, axles, adapted for a pair of wheels of the vehicle, are operatively connected to the output gear, a transfer device provided on a second portion of said output shaft spaced from said first portion, a propeller shaft means operatively connected to said transfer device for driving other axles adapted for another pair of wheels of the vehicle and four-wheel drive.
Claim 16
Dependent Claim
143 words
A transmission apparatus, for a motor vehicle defining a longitudinal direction and having an internal combustion engine with a crankshaft transversely disposed in said vehicle adjacent an end portion of the latter, comprising a transmission transversely disposed in said vehicle and operatively connected to the crankshaft of said engine at one end portion of said transmission, said transmission having an output shaft and an output gear mounted on said output shaft at a first portion thereof adjacent to an end of said engine, axles, adapted for a pair of wheels of the vehicle, are operatively connected to the output gear, a transfer device provided on a second portion of said output shaft spaced from said first portion, a propeller shaft means operatively connected to said transfer device for driving other axles adapted for another pair of wheels of the vehicle and four-wheel drive.
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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) | 1987-05-29 | 1987-11-28 | 1988-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-29 | 1991-11-28 | 1992-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-29 | 1995-11-28 | 1996-05-29 | $7700.00 | Window Closed / Lapsed |