US4639670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic field sensor comprising Wiegand wires or similar bistable magnetic elements
Assignee: Doduco Solutions GmbH
•
Filing: 1985-02-21
•
Granted: 1987-01-27
•
Expires: 2005-02-21
Abstract
Abstract The magnetic field sensor comprises a bundle consisting of a plurality of identical parallel bistable magnetic elements, which are surrounded by respective electrical windings, which are all wound in the same sense and are electrically connected in parallel.
Inventors
- 👤 Norbert Normann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:16
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
83 words
In a sensor for sensing an external magnetic field, comprising wire form bistable magnetic elements and electrical detector winding means surrounding said bistable magnetic elements, the improvement residing in that said bistable magnetic elements comprise a bundle of identical bistable magnetic elements which extend parallel to each other, and said electrical detector winding means comprise a plurality of electrical detector windings which surround respective ones of said bistable magnetic elements and are wound in the same sense and are electrically connected in parallel.
Claim 2
Dependent Claim
83 words
In a sensor for sensing an external magnetic field, comprising wire form bistable magnetic elements and electrical detector winding means surrounding said bistable magnetic elements, the improvement residing in that said bistable magnetic elements comprise a bundle of identical bistable magnetic elements which extend parallel to each other, and said electrical detector winding means comprise a plurality of electrical detector windings which surround respective ones of said bistable magnetic elements and are wound in the same sense and are electrically connected in parallel.
Claim 3
Dependent Claim
20 words
The improvement set forth in claim 1, wherein said bundle consists of three to five of said bistable magnetic elements.
Claim 4
Dependent Claim
24 words
The improvement set forth in claim 1, wherein said bistable elements surrounded by respective ones of said windings are closely packed in said bundle.
Claim 5
Dependent Claim
24 words
The improvement set forth in claim 2, wherein said bistable elements surrounded by respective ones of said windings are closely packed in said bundle.
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) | 1990-01-26 | 1990-07-28 | 1991-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-26 | 1994-07-28 | 1995-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-26 | 1998-07-28 | 1999-01-27 | $7700.00 | Window Closed / Lapsed |