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US4337673A Expired / Lapsed US ⏱️ 0.0 years remaining

Control apparatus for a vehicle power transmission

Assignee: Nissan Motor Co Ltd
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Filing: 1980-01-29
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Granted: 1982-07-06
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Expires: 2000-01-29
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Abstract

Abstract A control apparatus for a vehicle power transmission includes a reverse misselection preventing mechanism and a selection check mechanism. Both of the mechanisms are arranged in close vicinity to each other, and respectively include a member formed integrally with a shifter bracket which connects a manually operated control lever with a fork rod for selecting and shifting into or from different gear shift positions. This integrated apparatus allows a reduced number of required parts and assembling steps.

Inventors

  • 👤 Tamio Kawamoto

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 17:29
CPC Classifications
G; G05; G05G; G05G5/00; G05G5/02; F; F16; F16H; F16H61/00; F16H61/18; F16H2061/185; F16H61/24; Y; Y10; Y10S; Y10S74/00; Y10S74/90; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/20085; Y10T74/20091

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 290 words
A control apparatus for a vehicle power transmission including a rotatable and axially movable fork rod for effecting shifting into or from different gear shift positions, and a manually operated control level connected, by means of a shifter bracket, to the fork rod for effecting the rotation and/or axial movement thereof, and having a shift pattern in which a forward running gear shift position and a reverse running gear shift position are located on substantially the same shift line, the improvement therein comprising: a reverse misselection preventing mechanism which prevents shifting from the forward running gear shift position directly into the reverse running gear shift position, and which includes a first member formed integrally with the shifter bracket and projecting radially outwardly from the fork rod, and a second member supported by a housing for the control lever, said second member being movable between a first position in which said first and second members abut with each other preventing rotation of the fork rod, and a second position in which said first member is not moved by said second member permitting rotation of the fork rod; and a selection check mechanism which provides selection click feeling when the fork rod is rotated to a selected position in which a shift can be made into at least one of the gear shift positions, and which includes a first element formed integrally with the shifter bracket in the vicinity of said first member of the reverse misselection preventing mechanism, a second element movably supported by said housing, and resilient means urging said second element against said first element, one of said first and said second elements having such a profile as to cooperate with the other to produce said selection click feeling.
Claim 2
Dependent Claim 290 words
A control apparatus for a vehicle power transmission including a rotatable and axially movable fork rod for effecting shifting into or from different gear shift positions, and a manually operated control level connected, by means of a shifter bracket, to the fork rod for effecting the rotation and/or axial movement thereof, and having a shift pattern in which a forward running gear shift position and a reverse running gear shift position are located on substantially the same shift line, the improvement therein comprising: a reverse misselection preventing mechanism which prevents shifting from the forward running gear shift position directly into the reverse running gear shift position, and which includes a first member formed integrally with the shifter bracket and projecting radially outwardly from the fork rod, and a second member supported by a housing for the control lever, said second member being movable between a first position in which said first and second members abut with each other preventing rotation of the fork rod, and a second position in which said first member is not moved by said second member permitting rotation of the fork rod; and a selection check mechanism which provides selection click feeling when the fork rod is rotated to a selected position in which a shift can be made into at least one of the gear shift positions, and which includes a first element formed integrally with the shifter bracket in the vicinity of said first member of the reverse misselection preventing mechanism, a second element movably supported by said housing, and resilient means urging said second element against said first element, one of said first and said second elements having such a profile as to cooperate with the other to produce said selection click feeling.
Claim 3
Dependent Claim 34 words
The apparatus as claimed in claim 1, wherein said reverse misselection preventing mechanism and said selection check mechanism are disposed at locations which are angularly spaced apart around the periphery of the fork rod.

References Cited (Backward Citations)

US1938796A Cited
US2924124A Cited
US3192788A Cited
GB1056206A Cited
US3866488A Cited
GB1418764A Cited
US3939724A Cited
US4126055A Cited
US4174644A Cited
DE2949354A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1985-07-05 1986-01-04 1986-07-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1989-07-05 1990-01-04 1990-07-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1993-07-05 1994-01-04 1994-07-06 $7700.00 Window Closed / Lapsed

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