US3702910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic float point sensor for high pressure containers
Assignee: Simmonds Precision Products Inc
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Filing: 1971-03-24
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Granted: 1972-11-14
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Expires: 1991-03-24
Abstract
Abstract A float switch for operating a magnetic switch utilizing an oil-filled chamber in which there is supported for limited movement a magnetic member for energizing for a given position of the magnet a reed switch assembly mounted on the exterior of the chamber. A float member exterior of the housing and connected to the magnet by means of a bellows seal arrangement positions the magnet within the interior of the housing in accordance with the change of liquid level acting upon the float.
Inventors
- 👤 Lloyd T Akeley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:00
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/18; H01H36/00; H01H36/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
175 words
A float switch assembly for a high pressure liquid container comprising a hollow chamber having an end wall and open to atmosphere at the other end and arranged to contain a dielectric fluid and further including a thick-walled, tough, flexible bellows seal member located interiorally thereof adjacent to said other end, a rod member extending through said seal member and supported thereby and having at one end thereof exterior to said housing a float member and at the other end thereof extending within the interior of said housing a magnetic member, said rod extending through said housing axially thereof when said float member is positioned above the liquid level of said high pressure container, weights adjustably mounted on said rod member to aid in balancing the same, and a magnetic reed switch responsive to said magnetic member and carried by a bracket secured to the exterior of said housing, said bracket being rotatable through an arc of 360* about the chamber so that it can be correlated into any position relative to the magnetic member.
Claim 2
Dependent Claim
175 words
A float switch assembly for a high pressure liquid container comprising a hollow chamber having an end wall and open to atmosphere at the other end and arranged to contain a dielectric fluid and further including a thick-walled, tough, flexible bellows seal member located interiorally thereof adjacent to said other end, a rod member extending through said seal member and supported thereby and having at one end thereof exterior to said housing a float member and at the other end thereof extending within the interior of said housing a magnetic member, said rod extending through said housing axially thereof when said float member is positioned above the liquid level of said high pressure container, weights adjustably mounted on said rod member to aid in balancing the same, and a magnetic reed switch responsive to said magnetic member and carried by a bracket secured to the exterior of said housing, said bracket being rotatable through an arc of 360* about the chamber so that it can be correlated into any position relative to the magnetic member.
Claim 3
Dependent Claim
163 words
A float switch assembly for a high pressure liquid container comprising a hollow chamber having an end wall and open to atmosphere at the other end and arranged to contain a dielectric fluid and further including a thick-walled, tough, flexible bellows seal located interiorally thereof adjacent to said open end, a stub rod member extending through said flexible seal member and supported thereby and including at the end exterior and adjacent to said housing a float member and on the other end extending within the interior of said housing a counterweight including a coupling means, said rod extending through said housing when said float member is positioned above the liquid level of said high pressure container, said counterweight adjustably mounted in coaxially adjustable position on said rod member to aid in balancing the same, a flexure member pivotally recessed between one end of the counterweight coupling means and said end wall of the chamber and mercury switch means carried by said flexure member.
Claim 4
Dependent Claim
163 words
A float switch assembly for a high pressure liquid container comprising a hollow chamber having an end wall and open to atmosphere at the other end and arranged to contain a dielectric fluid and further including a thick-walled, tough, flexible bellows seal located interiorally thereof adjacent to said open end, a stub rod member extending through said flexible seal member and supported thereby and including at the end exterior and adjacent to said housing a float member and on the other end extending within the interior of said housing a counterweight including a coupling means, said rod extending through said housing when said float member is positioned above the liquid level of said high pressure container, said counterweight adjustably mounted in coaxially adjustable position on said rod member to aid in balancing the same, a flexure member pivotally recessed between one end of the counterweight coupling means and said end wall of the chamber and mercury switch means carried by said flexure member.
Claim 5
Dependent Claim
20 words
A float switch assembly according to claim 1, in which the weight is axially adjustable relative to said rod member.
Claim 6
Dependent Claim
25 words
A float switch assembly as claimed in claim 2, wherein the mercury switch means include electrical leads extending through the end wall of the chamber.
Claim 7
Dependent Claim
117 words
A float switch assembly for a high pressure liquid container comprising a hollow chamber closed at an end by a flexible seal member and arranged to contain a dielectric fluid, a rod member extending through said seal member and supported thereby and having at one end thereof exterior to said housing a float member and at the other end thereof extending within the interior of said housing a magnetic member, a weight adjustably mounted on said rod member to aid in balancing the same, and a switch responsive to said magnetic member located exteriorly of said housing and carried by a bracket secured to the exterior of said housing, said bracket being adjustable circumferentially of said housing.
Claim 8
Dependent Claim
117 words
A float switch assembly for a high pressure liquid container comprising a hollow chamber closed at an end by a flexible seal member and arranged to contain a dielectric fluid, a rod member extending through said seal member and supported thereby and having at one end thereof exterior to said housing a float member and at the other end thereof extending within the interior of said housing a magnetic member, a weight adjustably mounted on said rod member to aid in balancing the same, and a switch responsive to said magnetic member located exteriorly of said housing and carried by a bracket secured to the exterior of said housing, said bracket being adjustable circumferentially of said housing.
Claim 9
Dependent Claim
101 words
A float switch assembly for a high pressure liquid container comprising a hollow chamber closed at an end by a flexible seal member and arranged to contain a dielectric fluid, a rod member extending through said flexible seal member and supported thereby and having at one end exterior to said housing a float member and on the other end extending within the interior of said housing a counterweight including a coupling means, a flexure member pivotally recessed between one end of the counterweight coupling means and said end wall of the chamber and mercury switch means carried by said flexure member.
Claim 10
Dependent Claim
101 words
A float switch assembly for a high pressure liquid container comprising a hollow chamber closed at an end by a flexible seal member and arranged to contain a dielectric fluid, a rod member extending through said flexible seal member and supported thereby and having at one end exterior to said housing a float member and on the other end extending within the interior of said housing a counterweight including a coupling means, a flexure member pivotally recessed between one end of the counterweight coupling means and said end wall of the chamber and mercury switch means carried by said flexure member.
References Cited (Backward Citations)
US2116415A
Cited
US2204161A
Cited
US2646067A
Cited
US2587747A
Cited
US3022397A
Cited
US3168625A
Cited
US3588404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-14 | 1976-05-15 | 1976-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-14 | 1980-05-15 | 1980-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-14 | 1984-05-15 | 1984-11-14 | $7700.00 | Window Closed / Lapsed |