US3975971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shift mechanism for standard transmission
Assignee: Individual
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Filing: 1975-06-02
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Granted: 1976-08-24
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Expires: 1995-06-02
Abstract
Abstract A shifting mechanism for a manual transmission comprises first and second slide members and a shifting means for selectively shifting the first or second slide members in a to and fro direction. The first and second slide members are connected respectively to a first shifting arm and a second shifting arm of a transmission at one end of each of the slide members. At the other end of each of the slide members, means is provided which permits the first and second slide members to move independently of the respective second and first shifting arms of the transmission. The shifting means is adapted to move a selected first or second slide member independently of the other slide member whereby the corresponding first or second shifting arm is moved to and fro while the other shifting arm remains stationary. The shifting mechanism may be used on a three-speed standard transmission and the like.
Inventors
- 👤 Branko J. Radenovic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:45
CPC Classifications
F; F16; F16H; F16H63/00; F16H63/02; F16H63/08; F16H63/20; F16H59/00; F16H59/02; F16H59/04; F16H59/042; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20018
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
181 words
A shifting mechanism for a manual transmission which has first and second spaced apart transmission gear shifting arms comprising first and second slide members, and a shifting means for selectively shifting said first or second slide member in a to and fro direction, said first slide member having one end pivotally connected to a first shifting arm and having at the other end means for connecting said first slide member to a second shifting arm which permits said first slide member to move to and fro independently of said second shifting arm, said second slide member having one end pivotally connected to said second shifting arm and having at the other end means for connecting said second slide member to said first shifting arm which permits said second slide member to move to and fro independently of said first shifting arm, said shifting means being adapted to move a selected first or second slide member independently of the other slide member whereby the corresponding first or second shifting arm is moved to and fro while the other shifting arm remains stationary.
Claim 2
Dependent Claim
181 words
A shifting mechanism for a manual transmission which has first and second spaced apart transmission gear shifting arms comprising first and second slide members, and a shifting means for selectively shifting said first or second slide member in a to and fro direction, said first slide member having one end pivotally connected to a first shifting arm and having at the other end means for connecting said first slide member to a second shifting arm which permits said first slide member to move to and fro independently of said second shifting arm, said second slide member having one end pivotally connected to said second shifting arm and having at the other end means for connecting said second slide member to said first shifting arm which permits said second slide member to move to and fro independently of said first shifting arm, said shifting means being adapted to move a selected first or second slide member independently of the other slide member whereby the corresponding first or second shifting arm is moved to and fro while the other shifting arm remains stationary.
Claim 3
Dependent Claim
15 words
A shifting mechanism of claim 1 wherein each said slide member is an elongate plate.
Claim 4
Dependent Claim
105 words
A shifting mechanism of claim 2 wherein a pin is provided on each shifting arm, each said slide member having an aperture at the end thereof which is adapted to receive a respective pin of said first or second shifting arm, each slide member having at the other end thereof an elongate slot extending longitudinally of the slide member, said slot being adapted to receive a respective pin of said first or second shifting arm, the longitudinal length of the slot being such that when said first or second slide member is moved to and fro, the respective second or first shifting arm remains stationary.
Claim 5
Dependent Claim
155 words
A shifting mechanism of claim 3 wherein said means for selectively shifting said slide members comprises a shift lever which, when assembled on a transmission, is pivotally mounted at a point above said slide members, said shift lever pivoting about first and second axes which are perpendicular to each other and lie in substantially the same plane, said first axis extending in substantially the same direction as said slide members, means for engaging the shift lever provided on each of said first and second slide members, said shift lever being so mounted above said slide members that the lower end of said shift lever selectively engages a selected means for engaging the shift lever of the first or second slide member when said shift lever is pivoted about said first axis, pivotal movement of said shift lever about said second axis moving the selected first or second slide member in a to and fro direction.
Claim 6
Dependent Claim
83 words
A shifting mechanism of claim 4 wherein said slide members are positioned beside each other as they are connected to the pins of said first and second shift arms, said means for engaging the shift lever comprising a recess on the inside surface of each slide member which is adapted to receive the lower end of said shift lever, said shift lever engaging said recess of a selected first or second slide member when said shift lever is pivoted about said first axis.
Claim 7
Dependent Claim
27 words
A shifting mechanism of claim 4 wherein said means provided on each of said first and second members are located between a first and second shifting arm.
Claim 8
Dependent Claim
82 words
A shifting mechanism of claim 6 wherein said slide members are positioned beside each other as they are connected to the pins of first and second shift arms, said means for engaging the shift lever comprising a recess on the inside surface of each slide member which is adapted to receive the lower end of said shift lever, said shift lever engaging a recess of a selected first or second slide member when said shift lever is pivoted about said first axis.
Claim 9
Dependent Claim
26 words
A shifting mechanism of claim 7 wherein a bushing is positioned on each pin and extends through the aperture and slot of the respective slide members.
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) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |