US3724598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power transmission with lubricating means
Assignee: ECONOMY ENGINEERING COMPANY A CORP OF ILLINOIS
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Filing: 1971-08-25
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Granted: 1973-04-03
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Expires: 1991-08-25
Abstract
Abstract A power transmission with lubricating means is adapted for alternately driving a wheeled vehicle and a pump mounted thereon and varies the quantity and application of the lubricant in the transmission to provide desirable quantity and application of the lubricant for each of the alternate operations.
Inventors
- 👤 E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:32
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/04; F16H57/0447; F16H57/0456; F16N; F16N7/00; F16N7/38; F16N7/40; B; B60; B60K; B60K17/00; B60K17/34; B60K17/344; F16H57/0409; F16H57/045; F16H57/0467; F16H57/0469; F16H57/0471; F16H57/05
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
165 words
In a power transmission having a case including a lower portion, lubricant in said lower portion at a certain normal operating level and a plurality of relatively movable machine parts requiring lubrication in said case some of which are above the normal operating level of the lubricant, a reservoir and a pump for moving some of said lubricant from said case to said reservoir, means for supplying said plurality of relatively movable machine parts above said normal operating level of the lubricant with lubricant from said reservoir, said pump connected to and driven by said movable machine parts above said normal operating level of the lubricant, clutch means for separating and engaging said relatively movable machine parts above said normal operating level of the lubricant from other of said machine parts whereby said lubricant is moved into said reservoir and supplied to said relatively movable machine parts above said normal operating level of the lubricant only when the same are engaged by said clutch means.
Claim 2
Dependent Claim
165 words
In a power transmission having a case including a lower portion, lubricant in said lower portion at a certain normal operating level and a plurality of relatively movable machine parts requiring lubrication in said case some of which are above the normal operating level of the lubricant, a reservoir and a pump for moving some of said lubricant from said case to said reservoir, means for supplying said plurality of relatively movable machine parts above said normal operating level of the lubricant with lubricant from said reservoir, said pump connected to and driven by said movable machine parts above said normal operating level of the lubricant, clutch means for separating and engaging said relatively movable machine parts above said normal operating level of the lubricant from other of said machine parts whereby said lubricant is moved into said reservoir and supplied to said relatively movable machine parts above said normal operating level of the lubricant only when the same are engaged by said clutch means.
Claim 3
Dependent Claim
49 words
The improvement in power transmissions set forth in claim 1 wherein said reservoir when full holds less than the amount of lubricant in said transmission case at normal operating level, so as to act to lower the level of said lubricant in said case when said pump is actuated.
Claim 4
Dependent Claim
32 words
The improvement in power transmissions set forth in claim 1 wherein said other machine parts include a drive shaft and a driven shaft and said clutch means separates and engages said shafts.
Claim 5
Dependent Claim
80 words
The improvement in power transmissions set forth in claim 1 wherein said movable machine parts include a drive shaft, a driven shaft and a power take-off shaft, a sprocket rotatably mounted on said drive shaft, a secondary sprocket on said power take-off shaft and a chain trained over said sprockets, said pump being connected to and driven by said power take-off shaft, said clutch selectively separating and engaging said drive shaft with said driven shaft and said first mentioned sprocket.
Claim 6
Dependent Claim
54 words
The improvement in power transmissions set forth in claim 1 wherein communication means extends between said reservoir and said case and a control valve is located in said communication means, said control valve being responsive in operation to said clutch means so as to close said communication means when said pump is actuated thereby.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |