US3625310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gearbox lubrication
Assignee: Dresser Industries Inc
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Filing: 1970-01-20
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Granted: 1971-12-07
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Expires: 1990-01-20
Abstract
Abstract A gearbox having an improved drain and liquid level equalizing arrangement therein. The gearbox includes a housing having meshing gears mounted therein and containing a liquid for lubricating and cooling the gears. A drain opening extends through the lower side of the housing and is threaded to receive a drain plug. A baffle is positioned in the housing and has a port therein in alignment with the drain opening. The drain plug has an extension thereon that projects, in one position, into the port in the baffle. The extension of the drain plug is provided with a passageway whereby fluid can flow from within the baffle into the housing therein below. The drain plug can be moved to a second position wherein the extension on the drain plug is removed from the port permitting rapid fluid communication between the interior of the baffle and the housing therein below when it is desired to accurately determine the level of the liquid in the gearbox.
Inventors
- 👤 David B Herrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:07
CPC Classifications
F; F16; F16N; F16N19/00; F16N19/003; F16H; F16H57/00; F16H57/04; F16H57/0447; F16H57/0408; F16H57/042; F16H57/0421; F16H57/0423; F16H57/045; F16H57/0452; F16H57/0457; F16H57/048; F16H57/0493
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
133 words
In a device including a housing having spaced fill and drain openings and containing meshing gears and a liquid for lubricating and cooling the gears, the improvement comprising: a baffle member in said housing partially enclosing the gears, said baffle member dividing said housing into upper and lower chambers and having portions extending above the level of the liquid and having a port coaxially aligned with the drain opening; and a plug in the drain opening having an extended portion, said extended portion including a passageway providing restricted liquid flow between said chambers when said plug is in a first position, said plug being moveable in the drain opening to a second position wherein said extended portion is out of said port providing substantially uninhibited liquid flow between said chambers through said port.
Claim 2
Dependent Claim
133 words
In a device including a housing having spaced fill and drain openings and containing meshing gears and a liquid for lubricating and cooling the gears, the improvement comprising: a baffle member in said housing partially enclosing the gears, said baffle member dividing said housing into upper and lower chambers and having portions extending above the level of the liquid and having a port coaxially aligned with the drain opening; and a plug in the drain opening having an extended portion, said extended portion including a passageway providing restricted liquid flow between said chambers when said plug is in a first position, said plug being moveable in the drain opening to a second position wherein said extended portion is out of said port providing substantially uninhibited liquid flow between said chambers through said port.
Claim 3
Dependent Claim
20 words
The device of claim 1 and also including means located in the housing for determining The level of liquid therein.
Claim 4
Dependent Claim
21 words
The device of claim 1 wherein said baffle member has an arcuate cross section generally concentric with one of the gears.
Claim 5
Dependent Claim
22 words
The device of claim 1 wherein said plug is located in and closes the drain opening when in said second position thereof.
Claim 6
Dependent Claim
156 words
In a device including a housing having spaced fill and drain openings and containing meshing gears and a liquid for lubricating and cooling the gears, the improvement comprising: a baffle member of arcuate cross section located in said housing partially enclosing the gears, said baffle member dividing said housing into upper and lower chambers and having edge portions disposed above the liquid level, said baffle having a port located generally midway between said edges and in coaxial alignment with the drain opening; and, a plug moveably located in the drain opening and including an extended portion having a passageway extending therethrough, said plug being moveable between a first position wherein said extended portion is located in said port providing restricted liquid flow between said chambers and a second position wherein said extended portion is out of said port permitting substantially unrestricted liquid flow through said port, said plug closing the drain opening in both positions thereof.
Claim 7
Dependent Claim
156 words
In a device including a housing having spaced fill and drain openings and containing meshing gears and a liquid for lubricating and cooling the gears, the improvement comprising: a baffle member of arcuate cross section located in said housing partially enclosing the gears, said baffle member dividing said housing into upper and lower chambers and having edge portions disposed above the liquid level, said baffle having a port located generally midway between said edges and in coaxial alignment with the drain opening; and, a plug moveably located in the drain opening and including an extended portion having a passageway extending therethrough, said plug being moveable between a first position wherein said extended portion is located in said port providing restricted liquid flow between said chambers and a second position wherein said extended portion is out of said port permitting substantially unrestricted liquid flow through said port, said plug closing the drain opening in both positions thereof.
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) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |