US3739641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote reading gauge indicator unit
Assignee: Individual
•
Filing: 1971-05-05
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Granted: 1973-06-19
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Expires: 1991-05-05
Abstract
Abstract A remote reading indicator unit for a liquid level gauge in which a magnet, rotated by movement of a float, actuates a magnet within a sealed indicator unit, said unit including a variable resistance element to be electrically connected in a circuitry connected to a gauge dial at a remote point.
Inventors
- 👤 E Huskey
- 👤 L Taylor
- 👤 P Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:23
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/32; G01F23/38; G01F23/36; Y; Y10; Y10S; Y10S73/00; Y10S73/05
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
207 words
An indicator unit for a gauge of the type having a floatoperated rotatable magnet positioned within a gauge head, said unit comprising an upper casing part including a central boss and a lower casing part of insulating material carrying a centrally positioned metallic pivot, a magnet mounted on said pivot in the said lower casing part to follow the movement of a magnet positioned within the gauge head, an indicator dial supported by said boss in said upper casing part positioned above said pivotally mounted magnet, an indicating pointer mounted on said pivotally mounted magnet so configured as to extend from below over the peripheral edge of said indicator dial, a variable resistance wire mounted along an arc on the underside of said indicator dial, a sliding contact mounted on said pivotally mounted magnet to contact said variable resistance wire at successive points along its length as said pivotally mounted magnet pivots, ground means exterior to said lower casing part electrically connected to said sliding contact, by way of said pivot, and an electric terminal means accessible to the exterior of said unit operatively connected to one end of said variable resistance wire and sealed in said upper casing part to be connected to a remote meter.
Claim 2
Dependent Claim
207 words
An indicator unit for a gauge of the type having a floatoperated rotatable magnet positioned within a gauge head, said unit comprising an upper casing part including a central boss and a lower casing part of insulating material carrying a centrally positioned metallic pivot, a magnet mounted on said pivot in the said lower casing part to follow the movement of a magnet positioned within the gauge head, an indicator dial supported by said boss in said upper casing part positioned above said pivotally mounted magnet, an indicating pointer mounted on said pivotally mounted magnet so configured as to extend from below over the peripheral edge of said indicator dial, a variable resistance wire mounted along an arc on the underside of said indicator dial, a sliding contact mounted on said pivotally mounted magnet to contact said variable resistance wire at successive points along its length as said pivotally mounted magnet pivots, ground means exterior to said lower casing part electrically connected to said sliding contact, by way of said pivot, and an electric terminal means accessible to the exterior of said unit operatively connected to one end of said variable resistance wire and sealed in said upper casing part to be connected to a remote meter.
Claim 3
Dependent Claim
53 words
The indicator unit of claim 1, for a gauge having a gauge head formed with a depression adapted to receive said indicator unit, and having an annular groove provided about said depression, said indicator unit being held within said depression by an expansible snap ring surrounding said unit and contacting said ground means.
Claim 4
Dependent Claim
55 words
The indicator unit of claim 2 for a gauge having a metallic gauge head, in which said ground means comprises a strip of flat metal electrically connected to said pivot and extending radially exteriorly of said lower casing part as to be clamped by said expansible snap ring in electrical contact with said gauge head.
Claim 5
Dependent Claim
43 words
The combination of claim 2, in which said gauge head is provided with at least one projection and said indicator unit is provided with a corresponding depression positioned so that the said unit can be assembled with said head in only one position.
Claim 6
Dependent Claim
62 words
In the indicator unit of claim 1, for a gauge having a head formed with a depression adapted to receive said indicator unit, said indicator unit being provided with shoulder means, said gauge head being provided with threaded sockets adjacent said depression, and headed bolt means adapted to be mounted in said threaded sockets with the heads thereof engaging said shoulder means.
Claim 7
Dependent Claim
38 words
In the indicator of claim 5, in which said ground means extends radially outwardly and upwardly from said metallic pivot to said shoulder to be clamped by engagement under the head of one of said headed bolt means.
Claim 8
Dependent Claim
197 words
An indicator unit for a gauge of the type having a float rotatable magnet positioned within a gauge head, said indicator unit being a unitary assembly to be readily assembled with and removed from said gauge head, said indicator unit comprising a transparent upper and lower casing part, a central boss having a central depression formed on the inner side of said upper part, a radially extending dial carrying a variable resistance wire on the undeRside thereof and mounted on said boss, a pivot mounted centrally of said lower casing part, a magnet carrying a sliding contact mounted for free rotation on said pivot to contact said variable resistance wire, a pointer mounted for rotation with said magnet extending in a direction radially from said pivot and extending upwardly and radially inwardly at its end remote from said pivot to extend over the peripheral edge of said gauge dial, said magnet being provided with a central projection to extend loosely into said depression in said boss whereby said magnet is held in assembled position with respect to said dial during assembly and to prevent excessive movement of said magnet axially of said pivot during shipment or use.
Claim 9
Dependent Claim
197 words
An indicator unit for a gauge of the type having a float rotatable magnet positioned within a gauge head, said indicator unit being a unitary assembly to be readily assembled with and removed from said gauge head, said indicator unit comprising a transparent upper and lower casing part, a central boss having a central depression formed on the inner side of said upper part, a radially extending dial carrying a variable resistance wire on the undeRside thereof and mounted on said boss, a pivot mounted centrally of said lower casing part, a magnet carrying a sliding contact mounted for free rotation on said pivot to contact said variable resistance wire, a pointer mounted for rotation with said magnet extending in a direction radially from said pivot and extending upwardly and radially inwardly at its end remote from said pivot to extend over the peripheral edge of said gauge dial, said magnet being provided with a central projection to extend loosely into said depression in said boss whereby said magnet is held in assembled position with respect to said dial during assembly and to prevent excessive movement of said magnet axially of said pivot during shipment or use.
References Cited (Backward Citations)
US1937231A
Cited
US2266298A
Cited
US2325582A
Cited
US2620412A
Cited
US2827621A
Cited
US3339413A
Cited
US3394594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |