Patent US3855878A successfully refreshed from Google Patents.
US3855878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission systems
Assignee: H Steiner Ltd
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Filing: 1973-03-16
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Granted: 1974-12-24
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Expires: 1993-03-16
Abstract
Abstract A gearbox or transfer box having first and second input shafts and first and second output shafts, intermeshing gears mounted on the respective shafts, and control means operable to effect simultaneous movement of selected gears to change from a mechanical to a hydraulic output drive, the arrangement being such that both drives cannot be simultaneously connected to the output.
Inventors
- 👤 H Steiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:45
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/02; F16H2700/00; F16H2700/02; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19126; Y10T74/1914
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
147 words
A gearbox comprising: a. a housing b. four shafts rotatably supported by said housing, said shafts including a main input shaft, a main output shaft, an auxiliary input shaFt, and an auxiliary output shaft, c. a single control means movable between two operative positions, and d. means responsive to movement of said control means into one of its operative positions for simultaneously: I. connecting said main input shaft to said main output shaft, II. disconnecting said main input shaft from said auxiliary output shaft, and III. disconnecting said auxiliary input shaft from said main output shaft, and responsive to movement of said control means into the other of its operative positions for simultaneously: I. connecting said main input shaft to said auxiliary output shaft, II. connecting said auxiliary input shaft to said main output shaft, and III. disconnecting said main input shaft from said main output shaft.
Claim 2
Dependent Claim
147 words
A gearbox comprising: a. a housing b. four shafts rotatably supported by said housing, said shafts including a main input shaft, a main output shaft, an auxiliary input shaFt, and an auxiliary output shaft, c. a single control means movable between two operative positions, and d. means responsive to movement of said control means into one of its operative positions for simultaneously: I. connecting said main input shaft to said main output shaft, II. disconnecting said main input shaft from said auxiliary output shaft, and III. disconnecting said auxiliary input shaft from said main output shaft, and responsive to movement of said control means into the other of its operative positions for simultaneously: I. connecting said main input shaft to said auxiliary output shaft, II. connecting said auxiliary input shaft to said main output shaft, and III. disconnecting said main input shaft from said main output shaft.
Claim 3
Dependent Claim
36 words
A gearbox according to claim 1 wherein said shafts are stub shafts, said main input shaft and said main output shaft being co-axial and provided with splines enabling them to be directly coupled to each another.
Claim 4
Dependent Claim
28 words
A gearbox according to claim 2 wherein one of said co-axial stub shafts is supported on bearings on a reduced-diameter end portion of the associated co-axial stub shaft.
Claim 5
Dependent Claim
15 words
A gearbox according to claim 3 wherein said shafts are arranged in two co-axial pairs.
Claim 6
Dependent Claim
15 words
A gearbox according to claim 4 wherein all said shafts are parallel to one another.
Claim 7
Dependent Claim
99 words
A gearbox according to claim 2 including gears freely rotatable on said co-axial stub shafts, and wherein said responsive means (d) includes splined collars movable to simultaneously couple said gears to their respective coaxial stub shafts or to disengage said gears from their respective coaxial stub shafts, one of said collars engaging both of said coaxial stub shafts to connect the shafts together when said collars are moved to disengage said gears from their respective coaxial stub shafts, and gears on the remaining two stub shafts in constant mesh with said gears on said two co-axial stub shafts, respectively.
Claim 8
Dependent Claim
104 words
A gearbox according to claim 2 including a gear on each of said shafts, each gear being non-rotatable with respect to its respective shaft, the gears on said main input shaft and auxiliary output shaft being intermeshed and the gears on said auxiliary input shaft and main output shaft being intermeshed when said control means is in said other of its positions, and wherein said responsive means (d) moves one of each of said pairs of intermeshing gears along its shaft and out of meshing engagement with its respective gear in response to movement of said control means to said one of its positions.
Claim 9
Dependent Claim
44 words
A gearbox according to claim 1 including further control means operable when said control means is in said other of its positions to disconnect said main output shaft and said auxiliary input shaft without disengaging said main input shaft to said auxiliary output shaft.
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |