Patent US4473142A successfully refreshed from Google Patents.
US4473142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parking system for a vehicle
Assignee: Subaru Corp
•
Filing: 1982-02-04
•
Granted: 1984-09-25
•
Expires: 2002-02-04
Abstract
Abstract A parking system for a vehicle having a fluid operated clutch or electromagnetic clutch. A shifter arm is rotatably and axially slidably mounted on a shaft and a link mechanism is provided for transmitting the operation of the gear shaft lever to the shifter arm for rotating and sliding it. In a transmission of the vehicle, a parking shifter rail provided for parking operation is connected to the shifter arm by a fork. A parking pawl operatively engages the parking shifter rail, and a parking gear in the transmission engages the parking pawl. When the gear shift lever is shifted to the parking position, the parking pawl is rotated by the movement of the parking shifter rail and engaged with the parking gear. Thus, the transmission system of the vehicle is locked by the parking pawl.
Inventors
- 👤 Sadao Makishima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:24
CPC Classifications
F; F16; F16H; F16H63/00; F16H63/02; F16H63/30; F16H63/34; F16H63/3416; B; B60; B60T; B60T1/00; B60T1/005; B60W; B60W10/00; B60W10/10; B60W10/18; F16H59/00; F16H59/02; F16H59/04; F16H59/042; F16H63/08; F16H63/20; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/20085; Y10T74/20104
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
204 words
In a parking system for a vehicle having a transmission, a clutch for operatively connecting a crankshaft of an engine of the vehicle to the transmission, a gear shift lever, shifter rails for selecting change speed gears in said transmission, a parking shifter rail, a link mechanism for transmitting the operation of said gear shift lever to said shifter rails and for shifting one of the shifter rails, the improvement wherein said link mechanism comprises a shifter arm rotatably and axially slidably mounted on a shaft, means for transmitting the operation of said gear shift lever to said shifter arm for rotation and sliding thereof, fork means for connecting said shifter arm with said parking shifter rail, a parking pawl operatively engaged with said parking shifter rail, a parking gear provided in said transmission engageable with said parking pawl, means for converting the movement of said parking shifter rail to movement of said parking pawl for engaging said pawl with said parking gear, and a lock lever only slidable on said shaft and a spring for urging said lock lever to said shifter arm, whereby said lock lever can be engaged with said fork means together with said shifter arm in a parking position.
Claim 2
Dependent Claim
204 words
In a parking system for a vehicle having a transmission, a clutch for operatively connecting a crankshaft of an engine of the vehicle to the transmission, a gear shift lever, shifter rails for selecting change speed gears in said transmission, a parking shifter rail, a link mechanism for transmitting the operation of said gear shift lever to said shifter rails and for shifting one of the shifter rails, the improvement wherein said link mechanism comprises a shifter arm rotatably and axially slidably mounted on a shaft, means for transmitting the operation of said gear shift lever to said shifter arm for rotation and sliding thereof, fork means for connecting said shifter arm with said parking shifter rail, a parking pawl operatively engaged with said parking shifter rail, a parking gear provided in said transmission engageable with said parking pawl, means for converting the movement of said parking shifter rail to movement of said parking pawl for engaging said pawl with said parking gear, and a lock lever only slidable on said shaft and a spring for urging said lock lever to said shifter arm, whereby said lock lever can be engaged with said fork means together with said shifter arm in a parking position.
Claim 3
Dependent Claim
32 words
The parking system for a vehicle having a transmission in accordance with claim 1, wherein said parking shifter rail is integrated with the shifter rail for a reverse gear of said transmission.
Claim 4
Dependent Claim
27 words
The parking system according to claim 1, wherein said means for converting the movement of said parking shifter rail comprises a cam on said parking shifter rail.
Claim 5
Dependent Claim
41 words
The parking system according to claim 1, wherein said lock lever comprises a first arm engaged with a stop pin for locking the engagement of said parking pawl with said parking gear, and a second arm engageable with said fork means.
References Cited (Backward Citations)
US2694943A
Cited
US3213968A
Cited
US3987879A
Cited
US4151902A
Cited
US4277983A
Cited
US4310081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-25 | 1988-03-26 | 1988-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-25 | 1992-03-26 | 1992-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-25 | 1996-03-26 | 1996-09-25 | $7700.00 | Window Closed / Lapsed |