Patent US4528867A successfully refreshed from Google Patents.
US4528867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission case for tractors
Assignee: Iseki & Co Ltd
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Filing: 1982-09-13
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Granted: 1985-07-16
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Expires: 2002-09-13
Abstract
Abstract A transmission case for tractors consists of three parts, a front transmission case, a rear transmission case and a spacer transmission case, the spacer transmission case having a mounting flange around its outer periphery. The front and rear transmission cases are securely mounted to the mounting flange of the spacer transmission case so that the spacer transmission case is contained in either or both of the front and rear transmission cases thereby minimizing the entire length of the transmission case. The transmission case is also characterized in that the spacer transmission case has an opening in the ceiling to enable easy access to the gear components installed in the spacer transmission case during assembling work and adjustment.
Inventors
- 👤 Hideo Semba
- 👤 Toshio Hori
- 👤 Noboru Sagawa
- 👤 Ryota Nagano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:33
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/02; F16H3/08; F16H3/087; F16H3/093; F16H3/085; F16H57/00; F16H57/02; F16H2057/02013; F16H2057/02039; F16H2057/02043; F16H2057/02056; F16H2057/02086; F16H57/023; F16H2057/0235; F16H37/00; F16H37/02; F16H37/04; F16H37/042; F16H37/043; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19377; Y10T74/19386; Y10T74/194; Y10T74/21; Y10T74/2186
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
150 words
A transmission assembly for use in a vehicle comprising a front transmission case and a rear transmission case, a first speed change gear means disposed within said front transmission case, and a third speed change gear means is disposed with said rear transmission case, said front and rear transmission cases having an open end adapted to be contiguously disposed in the assembled position, and a spacer transmission case, said spacer transmission case having a laterally circumscribing flange extending outwardly therefrom, components defining a second speed change gear means disposed in said spacer transmission case, said flange of said spacer transmission case being disposed between the open ends of said front and rear transmission cases, whereby said spacer case is disposed wholly within the assembled front and rear transmission cases, and means for securing said front and rear transmission cases to said flange in the assembled position of said transmission cases.
Claim 2
Dependent Claim
150 words
A transmission assembly for use in a vehicle comprising a front transmission case and a rear transmission case, a first speed change gear means disposed within said front transmission case, and a third speed change gear means is disposed with said rear transmission case, said front and rear transmission cases having an open end adapted to be contiguously disposed in the assembled position, and a spacer transmission case, said spacer transmission case having a laterally circumscribing flange extending outwardly therefrom, components defining a second speed change gear means disposed in said spacer transmission case, said flange of said spacer transmission case being disposed between the open ends of said front and rear transmission cases, whereby said spacer case is disposed wholly within the assembled front and rear transmission cases, and means for securing said front and rear transmission cases to said flange in the assembled position of said transmission cases.
Claim 3
Dependent Claim
48 words
A transmission case for tractors as defined in claim 1, wherein the spacer transmission has an opening in the ceiling to allow the component members of the second speed change gear to be inserted through the opening for assembling onto the rotating shaft of the speed change gear.
Claim 4
Dependent Claim
24 words
A transmission assembly as defined in claim 1 wherein said flange extends radially outwardly of said spacer transmission case about a medial portion thereof.
Claim 5
Dependent Claim
27 words
A transmission assembly as defined in claim 1 wherein said flange extends radially outwardly of said spacer transmission case adjacent one end of said spacer transmission case.
Claim 6
Dependent Claim
37 words
A transmission assembly as defined in claim 1 wherein said front, rear and spacer transmission cases are co-axially disposed relative with one another, and said spacer transmission case being disposed within said front and rear transmission cases.
Claim 7
Dependent Claim
32 words
A transmission assembly as defined in claim 1 wherein each of said first, second and third speed change gear means includes a transmission shaft, and said respective transmission shafts being co-axially disposed.
References Cited (Backward Citations)
CA631129A
Cited
US3099166A
Cited
US3082645A
Cited
US3173303A
Cited
US4273001A
Cited
US4365523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-15 | 1989-01-14 | 1989-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-15 | 1993-01-14 | 1993-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-15 | 1997-01-14 | 1997-07-16 | $7700.00 | Window Closed / Lapsed |