US3794913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase interface indicator
Assignee: Standard Oil Co
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Filing: 1972-05-18
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Granted: 1974-02-26
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Expires: 1992-05-18
Abstract
Abstract Disclosed is an apparatus for detecting the location of the interface between two phases of matter of substantially different conductivity. The apparatus includes a plurality of insulated conductive members spaced along an axis and adapted for suitable electrical connections whereby it may be determined which of the conductive members are immersed in the conductive phase and which are in the non-conductive phase.
Inventors
- 👤 W Cropper
- 👤 S Kapff
- 👤 R Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:43
CPC Classifications
G; G01; G01R; G01R1/00; G01R1/30; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/06; G01R27/00; G01R27/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
122 words
An apparatus useful in detecting the location of the interface between two phases of matter of substantially different conductivity comprising: a. a base; b. a rod-shaped support member extending from said base and having three or more edges; c. alternating insulating and conductive annules stacked on said bAse and support member interconnected by male-female coupling adapted to receive O-rings and with internal diameter large enough to accommodate the support rod but keep the edges of said rod in approximate contact with the internal circumference thereby forming channels adapted to carry wires; d. wires connected to said conductive annules and passing through said channels; and e. an outer-closure means attached to said rod which holds said alternating insulating and conductive annules in place.
Claim 2
Independent Claim
122 words
An apparatus useful in detecting the location of the interface between two phases of matter of substantially different conductivity comprising: a. a base; b. a rod-shaped support member extending from said base and having three or more edges; c. alternating insulating and conductive annules stacked on said bAse and support member interconnected by male-female coupling adapted to receive O-rings and with internal diameter large enough to accommodate the support rod but keep the edges of said rod in approximate contact with the internal circumference thereby forming channels adapted to carry wires; d. wires connected to said conductive annules and passing through said channels; and e. an outer-closure means attached to said rod which holds said alternating insulating and conductive annules in place.
Claim 3
Dependent Claim
15 words
An apparatus of claim 2 wherein the insulating members are made from glass filled polytetrafluoroethane.
Claim 4
Dependent Claim
67 words
a frusto-conical sleeve of suitable size to fit inside said outer threaded male coupling on said ledge and having such length that the threaded end of said support rod extends beyond the end of said sleeve when annular part (1) is stacked on the support rod, and said sleeve having a narrow port in its side to allow wires running along the support rod to pass out;
Claim 5
Dependent Claim
67 words
a frusto-conical sleeve of suitable size to fit inside said outer threaded male coupling on said ledge and having such length that the threaded end of said support rod extends beyond the end of said sleeve when annular part (1) is stacked on the support rod, and said sleeve having a narrow port in its side to allow wires running along the support rod to pass out;
Claim 6
Dependent Claim
19 words
a nut which screws on the threaded end of said support rod extending out of said frusto-conical sleeve; and
Claim 7
Dependent Claim
19 words
a nut which screws on the threaded end of said support rod extending out of said frusto-conical sleeve; and
Claim 8
Independent Claim
200 words
An apparatus useful in detecting the location of the interface between two phases of matter of substantially different conductivity comprising: a. a base; b. a rod-shaped support member extending from said base and having three or more edges and a threaded top; c. alternating insulating and conductive annules stacked on said base and support member with the insulating annules acting as male couplings having recesses at each end adapted to receive O-rings and containing wire passageways from the surface of the recessed ends to the interior surface of said annules and with internal diameter large enough to accommodate the support rod but keep the edges of said rod in approximate contact with the internal circumference thereby forming channels adapted to carry wires and with said conductive annules acting as female couplings having external diameter approximately the same as that of the insulating annules and internal diameter at least as large as the external diameter of the recessed portion of the insulating annules; d. wires connected to said conductive annules and passing through said passageways and channels; and e. an outer-end configuration of four parts which holds said alternating insulating and conductive annules in place on the support rod consisting of:
Claim 9
Independent Claim
200 words
An apparatus useful in detecting the location of the interface between two phases of matter of substantially different conductivity comprising: a. a base; b. a rod-shaped support member extending from said base and having three or more edges and a threaded top; c. alternating insulating and conductive annules stacked on said base and support member with the insulating annules acting as male couplings having recesses at each end adapted to receive O-rings and containing wire passageways from the surface of the recessed ends to the interior surface of said annules and with internal diameter large enough to accommodate the support rod but keep the edges of said rod in approximate contact with the internal circumference thereby forming channels adapted to carry wires and with said conductive annules acting as female couplings having external diameter approximately the same as that of the insulating annules and internal diameter at least as large as the external diameter of the recessed portion of the insulating annules; d. wires connected to said conductive annules and passing through said passageways and channels; and e. an outer-end configuration of four parts which holds said alternating insulating and conductive annules in place on the support rod consisting of:
Claim 10
Dependent Claim
37 words
a top-end coupling with external diameter approximately the same as that of the insulating annules and threaded internal diameter of suitable size to tighten on said threaded male coupling at the outer end of annular part (1).
Claim 11
Dependent Claim
37 words
a top-end coupling with external diameter approximately the same as that of the insulating annules and threaded internal diameter of suitable size to tighten on said threaded male coupling at the outer end of annular part (1).
Claim 12
Dependent Claim
15 words
An apparatus of claim 3 wherein the insulating members are made from glass filled polytetrafluoroethane.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |