US3398384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic proximity switch
Assignee: VERONICA WHITESIDES
•
Filing: 1966-03-04
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Granted: 1968-08-20
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Expires: 1986-03-04
Abstract
No abstract record available.
Inventors
- 👤 Piekarski Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:30
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/01; G08G1/042; H; H01; H01H; H01H36/00; H01H36/0006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A PROXIMITY DEVICE COMPRISING AT LEAST ONE MAGNET MOUNTED TO SWING BETWEEN A NORMAL POSITION OF ESSENTIAL ALIGNMENT WITH AN AMBIENT FIELD AND A DEFLECTED POSITION IN RESPONSE TO MOVEMENT OF A BODY OF MAGNETIC MATERIAL INTO THE VICINITY OF THE MAGNET, AND MAGNETICALLY ACTUATED ELECTRICAL SWITCHING MEANS POSITIONED NEAR SAID MAGNET AND OPERABLE MAGNETICALLY BY THE FIELD OF SAID MAGNET TO OPEN OR CLOSE AN ELECTRICAL CIRCUIT UPON DEFLECTION OF SAID MAGNET FROM SAID NORMAL POSITION, SAID MAGNET HAVING A NORTH-SOUTH AXIS WHICH IN SAID NORMAL POSITION IS ESSENTIALLY ALIGNED WITH SAID AMBIENT FIELD, SAID SWITCHING MEANS INCLUDING A MAGNETICALLY ACTUATED REED SWITCH LOCATED NEAR SAID MAGNETIC AND HAVING REED CONTACTS DISPOSED ESSENTIALLY
Claim 2
Dependent Claim
114 words
A PROXIMITY DEVICE COMPRISING AT LEAST ONE MAGNET MOUNTED TO SWING BETWEEN A NORMAL POSITION OF ESSENTIAL ALIGNMENT WITH AN AMBIENT FIELD AND A DEFLECTED POSITION IN RESPONSE TO MOVEMENT OF A BODY OF MAGNETIC MATERIAL INTO THE VICINITY OF THE MAGNET, AND MAGNETICALLY ACTUATED ELECTRICAL SWITCHING MEANS POSITIONED NEAR SAID MAGNET AND OPERABLE MAGNETICALLY BY THE FIELD OF SAID MAGNET TO OPEN OR CLOSE AN ELECTRICAL CIRCUIT UPON DEFLECTION OF SAID MAGNET FROM SAID NORMAL POSITION, SAID MAGNET HAVING A NORTH-SOUTH AXIS WHICH IN SAID NORMAL POSITION IS ESSENTIALLY ALIGNED WITH SAID AMBIENT FIELD, SAID SWITCHING MEANS INCLUDING A MAGNETICALLY ACTUATED REED SWITCH LOCATED NEAR SAID MAGNETIC AND HAVING REED CONTACTS DISPOSED ESSENTIALLY
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) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |