US4610174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission for a tractor
Assignee: Kubota Corp
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Filing: 1984-08-22
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Granted: 1986-09-09
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Expires: 2004-08-22
Abstract
Abstract A transmission for a tractor in which a forward-reverse change mechanism M3 is disposed between a first change speed mechanism M1 and a second change speed mechanism M2 and to the first change speed mechanism M1 a PTO countershaft 34 and a PTO shaft shaft 32 connected thereto are operatively connected. A drive shaft 47 for front wheels is operatively connected to the second change speed mechanism M2. A rotational power is transmitted to a mid-PTO shaft 39 from the PTO countershaft 34 via a gear 50 which is mounted freely and rotatably on the drive shaft 47 for the front wheels.
Inventors
- 👤 Masao Takagi
- 👤 Mitsuo Watashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:39
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/34; B60K17/344; B60K17/28; F; F16; F16H; F16H37/00; F16H37/02; F16H37/04; F16H37/042; F16H37/043
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
150 words
A transmission for a tractor having front and rear wheels comprising: an input shaft operatively connected to an engine; running-travel shaft means operatively connected between said input shaft and a rear wheel drive shaft for driving the rear wheels of said tractor, said running-travel shaft means including a main change speed means; PTO shaft means operatively connected to said input shaft and including a PTO counter shaft; a first gear rotatably mounted on said PTO counter shaft and operatively connected to said rear wheel drive shaft; front wheel drive shaft means disposed below said PTO counter shaft and including a second gear rotatably mounted thereon, said front wheel drive shaft means being adapted to be operatively connectable to said rear wheel drive shaft through said first gear; a mid-PTO shaft disposed below said front wheel drive shaft means and operatively connected to said PTO counter shaft through said second gear.
Claim 2
Dependent Claim
150 words
A transmission for a tractor having front and rear wheels comprising: an input shaft operatively connected to an engine; running-travel shaft means operatively connected between said input shaft and a rear wheel drive shaft for driving the rear wheels of said tractor, said running-travel shaft means including a main change speed means; PTO shaft means operatively connected to said input shaft and including a PTO counter shaft; a first gear rotatably mounted on said PTO counter shaft and operatively connected to said rear wheel drive shaft; front wheel drive shaft means disposed below said PTO counter shaft and including a second gear rotatably mounted thereon, said front wheel drive shaft means being adapted to be operatively connectable to said rear wheel drive shaft through said first gear; a mid-PTO shaft disposed below said front wheel drive shaft means and operatively connected to said PTO counter shaft through said second gear.
Claim 3
Dependent Claim
21 words
The transmission of claim 1 wherein said front wheel drive shaft means includes shift means selectively engageable with said first gear.
Claim 4
Dependent Claim
26 words
The transmission of claim 2 wherein said PTO counter shaft is provided with a fixed gear thereon which is in constant mesh with said second gear.
Claim 5
Dependent Claim
17 words
The transmission of claim 3 further comprising a rear PTO shaft connected to said PTO counter shaft.
Claim 6
Dependent Claim
36 words
The transmission of claim 4 wherein said running-travel shaft means and said PTO shaft means are operatively connected to said input shaft through said main change speed means and through a PTO change speed means, respectively.
Claim 7
Dependent Claim
24 words
The transmission of claim 5 wherein said running-travel shaft means is operatively connected to said rear wheel drive shaft through second change speed means.
Claim 8
Dependent Claim
27 words
The transmission of claim 6 wherein said running-travel shaft means includes forward-reverse switching means, said switching means being disposed between said main and second change speed means.
Claim 9
Dependent Claim
143 words
A transmission for a tractor including front and rear wheels comprising: a running-travel transmission line means including change speed means and a rear wheel drive shaft for driving the rear wheels of said tractor; PTO transmission line means including PTO shaft means for transferring the power from an engine; said running-travel and PTO transmission line means being mutually exclusive; a first gear rotatably mounted on said PTO shaft means and operatively connected to said rear wheel drive shaft; front wheel drive shaft means disposed below said PTO shaft means and including a second gear rotatably mounted thereon, said front wheel drive shaft means being operatively connectable to said rear wheel drive shaft through said first gear; mid-PTO shaft means disposed below said front wheel drive shaft means, said mid-PTO shaft means being operatively connected to said PTO shaft means through said second gear.
Claim 10
Dependent Claim
143 words
A transmission for a tractor including front and rear wheels comprising: a running-travel transmission line means including change speed means and a rear wheel drive shaft for driving the rear wheels of said tractor; PTO transmission line means including PTO shaft means for transferring the power from an engine; said running-travel and PTO transmission line means being mutually exclusive; a first gear rotatably mounted on said PTO shaft means and operatively connected to said rear wheel drive shaft; front wheel drive shaft means disposed below said PTO shaft means and including a second gear rotatably mounted thereon, said front wheel drive shaft means being operatively connectable to said rear wheel drive shaft through said first gear; mid-PTO shaft means disposed below said front wheel drive shaft means, said mid-PTO shaft means being operatively connected to said PTO shaft means through said second gear.
Claim 11
Dependent Claim
33 words
The transmission of claim 8 wherein said running-travel transmission line means includes forward-reverse switching means arranged rearwardly of said change speed means and second change speed means arranged rearwardly of said switching means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-08 | 1990-03-10 | 1990-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-08 | 1994-03-10 | 1994-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-08 | 1998-03-10 | 1998-09-09 | $7700.00 | Window Closed / Lapsed |