US3683136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical switch having adjustable conductive-liquid level
Assignee: Individual
•
Filing: 1971-02-25
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Granted: 1972-08-08
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Expires: 1991-02-25
Abstract
Abstract A device for protecting cars against skidding in curves, comprising a housing, filled with an electrically conducting liquid which is influenced by the centrifugal force when the car travels through the corner at speed, so that the level of the conducting liquid assumes an inclined position and the liquid can close or open an electrical circuit, leading to the switching-off of the ignition. By means of a displacer body the sensivity of the device can be adjusted.
Inventors
- 👤 Mathijs Van Den Bosch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:37
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/18; H01H29/00; H01H29/002; H01H29/26
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
107 words
An electrical switch comprising a housing, a movable liquid conductor within said housing, a pair of spaced-apart electrical contacts within said housing for making direct contact with said liquid conductor, said contacts being located on opposite sides of a vertical median plane extending through said housing, and a displacer body within said housing and movable into different positions wherein it can directly contact and displace different amounts of said liquid conductor so as to adjust the level of said liquid conductor, said displacer body being a member eccentrically mounted for rotation with respect to said housing about an axis parallel to the surface of said liquid conductor.
Claim 2
Dependent Claim
107 words
An electrical switch comprising a housing, a movable liquid conductor within said housing, a pair of spaced-apart electrical contacts within said housing for making direct contact with said liquid conductor, said contacts being located on opposite sides of a vertical median plane extending through said housing, and a displacer body within said housing and movable into different positions wherein it can directly contact and displace different amounts of said liquid conductor so as to adjust the level of said liquid conductor, said displacer body being a member eccentrically mounted for rotation with respect to said housing about an axis parallel to the surface of said liquid conductor.
Claim 3
Dependent Claim
24 words
An electrical switch as defined in claim 1 including a liquid insulator within said housing, said liquid insulator being immiscible with said liquid conductor.
Claim 4
Dependent Claim
29 words
An electrical switch as defined in claim 2 wherein said liquid conductor is mercury, and said liquid insulator is selected from the group consisting of glycerol and transformer oil.
Claim 5
Dependent Claim
100 words
An electrical switch comprising a housing, a movable liquid conductor within said housing, a pair of spaced-apart electrical contacts within said housing for making direct contact with said liquid conductor, said contacts being located on opposite sides of a vertical median plane extending through said housing, a magnetizable member movable freely with said liquid conductor within said housing, means for producing a magnetic flux which acts on said member to resist free movement of said member and said liquid conductor, and means for adjusting the magnitude of said flux whereby said member controls the resistance to movement of said conductor.
Claim 6
Dependent Claim
100 words
An electrical switch comprising a housing, a movable liquid conductor within said housing, a pair of spaced-apart electrical contacts within said housing for making direct contact with said liquid conductor, said contacts being located on opposite sides of a vertical median plane extending through said housing, a magnetizable member movable freely with said liquid conductor within said housing, means for producing a magnetic flux which acts on said member to resist free movement of said member and said liquid conductor, and means for adjusting the magnitude of said flux whereby said member controls the resistance to movement of said conductor.
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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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |