US4273004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear selector mechanism
Assignee: Transmisiones TSP SA de CV
•
Filing: 1979-07-23
•
Granted: 1981-06-16
•
Expires: 1999-07-23
Abstract
Abstract A selector mechanism for a gearbox in which gear shaft elements 68 are mounted on respective bars 52, 53, 54 which can move parallel with one another and only in these directions, an external control 45 being provided to selectively engage and move the bars 52, 53, 54.
Inventors
- 👤 William M. Morrison
- 👤 Philip J. Mazziotti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:55
CPC Classifications
F; F16; F16H; F16H59/00; F16H59/02; F16H59/04; F16H59/042; F16H59/68; F16H59/70; F16H63/00; F16H63/02; F16H63/08; F16H63/20; F16H2059/6823; F16H2059/708; F16H63/30; F16H2063/3079; F16H63/32; F16H2063/325; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/2003; Y10T74/20085; Y10T74/20104; Y10T74/2014; Y10T74/20159; Y10T74/20165; Y10T74/20171
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
210 words
A gearbox having an output shaft and an axis parallel to said output shaft, said gearbox comprising a main housing for enclosing gears and a bell housing for positioning adjacent an associated clutch, said bell housing secured to said main housing, first roller mounting means located in said main housing, second roller mounting means located in said bell housing, a first set of rollers mounted on said first roller mounting means, a second set of rollers mounted on said second roller mounting means, a plurality of shift bars operatively connected to shift elements for engaging and disengaging said gears, each of said shift bars extending parallel to said axis, each of said shift bars having a rectangular cross-section and having first and second axially spaced ends, said first ends of each of said shift bars mounted on said first set of rollers, said second ends of each of said shift bars mounted on said second set of rollers, at least one of said first and second ends of each of said shift bars defining a slot to facilitate the assembly of said gearbox, said bars being constrained to substantially axial movement by said first and second sets of rollers, and control means for selectively engaging and axially moving shift bars.
Claim 2
Dependent Claim
210 words
A gearbox having an output shaft and an axis parallel to said output shaft, said gearbox comprising a main housing for enclosing gears and a bell housing for positioning adjacent an associated clutch, said bell housing secured to said main housing, first roller mounting means located in said main housing, second roller mounting means located in said bell housing, a first set of rollers mounted on said first roller mounting means, a second set of rollers mounted on said second roller mounting means, a plurality of shift bars operatively connected to shift elements for engaging and disengaging said gears, each of said shift bars extending parallel to said axis, each of said shift bars having a rectangular cross-section and having first and second axially spaced ends, said first ends of each of said shift bars mounted on said first set of rollers, said second ends of each of said shift bars mounted on said second set of rollers, at least one of said first and second ends of each of said shift bars defining a slot to facilitate the assembly of said gearbox, said bars being constrained to substantially axial movement by said first and second sets of rollers, and control means for selectively engaging and axially moving shift bars.
Claim 3
Dependent Claim
51 words
A selector mechanism as claimed in claim 1 in which the external control member is arranged to enter the top of a casing of the gearbox, and is journalled therein, the control member having an element engageable with said bars selectively, said bars being situtated near the top of said casing.
Claim 4
Dependent Claim
72 words
A selector mechanism as claimed in claim 1 in which the external control member is connected to a rod extending transversely of the length of the gearbox and being capable of rotary and linear movement, said rod carrying a member alternatively engageable with said bars, linear movement of the rod being for aligning the member with a selected one of said bars and rotary movement being to move the selected bar linearly.
Claim 5
Dependent Claim
19 words
A selector mechanism as claimed in claim 3 in which the rod has means for resisting linear movement thereof.
Claim 6
Dependent Claim
25 words
A selector mechanism as claimed in claim 1 in which the bars carry means for actuating at least one switch connected in an electrical circuit.
Claim 7
Dependent Claim
26 words
a selector mechanism as claimed in claim 1 in which spring loaded means for releasably resisting movement of the bars in their lengthwise directions are provided.
Claim 8
Dependent Claim
33 words
A gearbox as defined in claim 1 wherein each of said first and second ends of each of said plurality of shift bars defines a slot to facilitate the assembly of said gearbox.
References Cited (Backward Citations)
US2680657A
Cited
US3274842A
Cited
US3387501A
Cited
US3857299A
Cited
US3943792A
Cited
US4170148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-06-15 | 1984-12-15 | 1985-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-15 | 1988-12-15 | 1989-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-15 | 1992-12-15 | 1993-06-16 | $7700.00 | Window Closed / Lapsed |