Patent US3795349A successfully refreshed from Google Patents.
US3795349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for conveying liquid samples through pipeline by compressed air
Assignee: Individual
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Filing: 1973-02-23
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Granted: 1974-03-05
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Expires: 1993-02-23
Abstract
Abstract A sampling device for conveying a liquid sample through a pipeline with the aid of compressed air uses a container having an outlet hole, and accumulating the liquid sample; the container is connected with a source of compressed air and the pipeline, and is in communication with the pipeline through a conoid attachment; a shut-off element which closes the outlet hole of said container is disposed inside the container.
Inventors
- 👤 V Schetinin
- 👤 J Reutsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:24
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/30; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
255 words
A device for conveying liquid samples containing solid matter along a pipeline with the aid of compressed gas, until said device and said pipeline are fully free of said samples, said device comprising a container for accumulating a mixture of liquid and solid matter, said container having a conic bottom portion defining a discharge channel which gradually connects said container with said pipeline, said discharge channel having an inlet; a first shut-off element having a first vertical rod member disposed inside said container, the bottom end of said rod member closing the inlet of said discharge channel; a first actuating means coupled to said rod member and including a diaphragm with a displacing spring, said diaphragm forming an upper wall of said container and responding to an increase of gas pressure within said container to move upward said first vertical rod member thereby opening the inlet of said discharge channel, said first rod member being attached at the top end thereof to an undersurface of said diaphragm, and means provided in said first shut-off element for providing communication between the container and the pipe, said means being in the form of an axial passage in said first rod member; said container further including an inlet through which the mixture of liquid and solid matter passes into said container; a second shut-off element having a second vertical rod member disposed in the inlet, the bottom end of said second rod member closing said inlet; and a second actuating means operatively connected to said second rod member.
Claim 2
Independent Claim
255 words
A device for conveying liquid samples containing solid matter along a pipeline with the aid of compressed gas, until said device and said pipeline are fully free of said samples, said device comprising a container for accumulating a mixture of liquid and solid matter, said container having a conic bottom portion defining a discharge channel which gradually connects said container with said pipeline, said discharge channel having an inlet; a first shut-off element having a first vertical rod member disposed inside said container, the bottom end of said rod member closing the inlet of said discharge channel; a first actuating means coupled to said rod member and including a diaphragm with a displacing spring, said diaphragm forming an upper wall of said container and responding to an increase of gas pressure within said container to move upward said first vertical rod member thereby opening the inlet of said discharge channel, said first rod member being attached at the top end thereof to an undersurface of said diaphragm, and means provided in said first shut-off element for providing communication between the container and the pipe, said means being in the form of an axial passage in said first rod member; said container further including an inlet through which the mixture of liquid and solid matter passes into said container; a second shut-off element having a second vertical rod member disposed in the inlet, the bottom end of said second rod member closing said inlet; and a second actuating means operatively connected to said second rod member.
Claim 3
Dependent Claim
79 words
A device as defined in claim 1, wherein said second rod member includes spring biasing means and has an axial passage therethrough, and wherein said second actuating means comprises a pressure-sensitive diaphragm coupled to said second rod member which actuates to close said inlet passage on admission of compressed gas on one side thereof, said axial passage in said second rod member connecting the admitted compressed gas to said container in a closed position of said second shut-off element.
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) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |