US3807431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for conducting waste liquid from a receptacle to a pneumatic liquid disposal system
Assignee: Wartsila Oy AB
•
Filing: 1972-11-21
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Granted: 1974-04-30
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Expires: 1992-11-21
Abstract
Abstract An apparatus for conveying waste liquid from a holding receptacle to a vacuum sewage disposal system in which the waste liquid is conducted through a transport conduit. In this arrangement, the transport conduit is provided with a means for providing a suitable admixture of atmospheric air to the waste liquid being conveyed at the inlet end of the transport conduit in order to obtain greater efficiency in the conveyance of the liquid.
Inventors
- 👤 S Svanteson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:30
CPC Classifications
E; E03; E03F; E03F1/00; E03F1/006; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3109; Y10T137/7287; Y10T137/7358; Y10T137/7368; Y10T137/7371; Y10T137/8593; Y10T137/86236; Y10T137/86252
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
137 words
An apparatus for conducting waste liquid from a receptacle to a pneumatic liquid disposal system by means of a transport conduit under vacuum, the improvement comprising a suction conduit having one end connected to the transport conduit and the other end immersed in the liquid collected in the receptacle, said other end of the suction conduit being provided with a hole located above the liquid level for the flowing of air with the liquid being conveyed, a device in the receptacle which follows the level changes of the liquid in the receptacle, and means operatively connected to the device for initiating the flow of waste liquid intermittently from the receptacle through the suction conduit in response to the accumlation of waste liquid in the receptacle, said other end of the suction conduit being secured to said device.
Claim 2
Independent Claim
137 words
An apparatus for conducting waste liquid from a receptacle to a pneumatic liquid disposal system by means of a transport conduit under vacuum, the improvement comprising a suction conduit having one end connected to the transport conduit and the other end immersed in the liquid collected in the receptacle, said other end of the suction conduit being provided with a hole located above the liquid level for the flowing of air with the liquid being conveyed, a device in the receptacle which follows the level changes of the liquid in the receptacle, and means operatively connected to the device for initiating the flow of waste liquid intermittently from the receptacle through the suction conduit in response to the accumlation of waste liquid in the receptacle, said other end of the suction conduit being secured to said device.
Claim 3
Dependent Claim
13 words
The apparatus as claimed in claim 1 wherein the device is a float.
Claim 4
Dependent Claim
22 words
The apparatus as claimed in claim 2 wherein the hole in the suction conduit is located adjacent to and above said float.
Claim 5
Dependent Claim
15 words
The apparatus as claimed in claim 1 wherein the suction conduit is a flexible hose.
Claim 6
Dependent Claim
66 words
The apparatus as claimed in claim 2 wherein said means comprises a main valve located in the suction conduit or the transport conduit, an operating device, means operatively connecting said float to the operating device, the latter being operatively connected to said main valve whereby the transport conduit is opened or closed depending on the position of the float on the liquid surface in the receptacle.
Claim 7
Dependent Claim
55 words
The apparatus as claimed in claim 5 wherein the main valve is operated by the vacuum present in the transport conduit, and further comprising an auxiliary valve which is acted upon by the operating device and by which the vacuum present in the transport conduit can be connected to or disconnected from said main valve.
Claim 8
Dependent Claim
64 words
The apparatus as claimed in claim 6 wherein the operating device comprises two ropes each connected at one end to the float, a lever arrangement, one of the ropes co-acting with the lever arrangement to open the auxiliary valve during an upward movement of the float, and the other rope being arranged to close the auxiliary valve during the downward movement of the float.
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) | 1977-04-29 | 1977-10-29 | 1978-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-29 | 1981-10-29 | 1982-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-29 | 1985-10-29 | 1986-04-30 | $7700.00 | Window Closed / Lapsed |