Patent US3738453A successfully refreshed from Google Patents.
US3738453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oiling means for pumps
Assignee: Individual
•
Filing: 1971-04-21
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Granted: 1973-06-12
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Expires: 1991-04-21
Abstract
Abstract An oiler for a pump having a delivery side and an inlet side, the delivery side being at a higher pressure than the inlet side, the oiler having a wick passing through a tube, one end of the wick lying in a dish of oil which dish is constantly being replenished from a reservoir of oil by a flow of air passing through a tube, part of which is below oil level, a flow of air passing downwardly through the tube in which the wick is placed so that oil is delivered from the wick to the air and into the fuel pipe of a pump, with the air pressure differential to create the flow being obtained by the air supply pipe being connected to the delivery side of the pump. The pump may be used under both pressurized and ''''vacuum'''' conditions.
Inventors
- 👤 G Boswell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:42
CPC Classifications
F; F04; F04C; F04C29/00; F04C29/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
267 words
An oiling means for a pump of the type having a delivery side and an inlet side, the delivery side being at a higher pressure than the inlet side, said oiling means comprising a covered vessel for containing oil, said vessel having an air pressure inlet, conduit means connecting said air pressure inlet to the delivery side of the pump, means defining an air outlet passageway within the vessel, said passageway passing downwardly through a floor of the vessel and being connected to the inlet side of the pump, a dish within the vessel mounted above the floor thereof surrounding the oil outlet passageway, said outlet passageway having an upper edge located above an upper edge of said dish, a conduit leading from a point in line with said air inlet through said dish, the conduit having a lower end submerged in the oil supply within said vessel and being spaced from the vessel floor so that incoming air entrains oil from said vessel and lifts it into the dish, and wick means positioned in the oil outlet passageway passing over the upper edge of said passageway and having an end in said dish adapted to collect oil therefrom and deliver it to said oil outlet means, the arrangement being such that air entering said vessel during operation of the pump via the delivery side, conduit means and air pressure inlet entrains oil raising it via said conduit to said dish in which oil is picked up by said wick and Passes in controlled amounts to the inlet side of said pump via said oil outlet passageway.
Claim 2
Dependent Claim
267 words
An oiling means for a pump of the type having a delivery side and an inlet side, the delivery side being at a higher pressure than the inlet side, said oiling means comprising a covered vessel for containing oil, said vessel having an air pressure inlet, conduit means connecting said air pressure inlet to the delivery side of the pump, means defining an air outlet passageway within the vessel, said passageway passing downwardly through a floor of the vessel and being connected to the inlet side of the pump, a dish within the vessel mounted above the floor thereof surrounding the oil outlet passageway, said outlet passageway having an upper edge located above an upper edge of said dish, a conduit leading from a point in line with said air inlet through said dish, the conduit having a lower end submerged in the oil supply within said vessel and being spaced from the vessel floor so that incoming air entrains oil from said vessel and lifts it into the dish, and wick means positioned in the oil outlet passageway passing over the upper edge of said passageway and having an end in said dish adapted to collect oil therefrom and deliver it to said oil outlet means, the arrangement being such that air entering said vessel during operation of the pump via the delivery side, conduit means and air pressure inlet entrains oil raising it via said conduit to said dish in which oil is picked up by said wick and Passes in controlled amounts to the inlet side of said pump via said oil outlet passageway.
Claim 3
Dependent Claim
68 words
The pump oiling means as claimed in claim 1 wherein an air pipe constitutes said conduit means through which air is conducted to said air pressure inlet, said air pipe being provided with a substantially U-shaped bend so that a portion of the air pipe is above the level of oil in the vessel to prevent oil flowing from said vessel to the delivery side of the pump.
Claim 4
Dependent Claim
24 words
The pump oiling means as claimed in claim 1 wherein a deflector plate is positioned above said conduit to deflect oil into said dish.
Claim 5
Dependent Claim
22 words
The pump oiling means as claimed in claim 1 wherein said oil outlet passageway has a bore of restricted cross sectional area.
Claim 6
Dependent Claim
62 words
The oiling means as claimed in claim 1 in which the pump includes a casing, a hollow rotor rotatable in said casing and in which pumping vanes slide and a passageway being provided in said casing adjacent the delivery side of the pump, with said passageway leading in at least some positions of the rotor to the hollow interior of the rotor.
Claim 7
Dependent Claim
19 words
The pump as claimed in claim 5 wherein said passageway is provided in an end bell of said casing.
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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |