US3339129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hall effect apparatus
Assignee: OHIO SEMITRONICS Inc
•
Filing: 1965-11-08
•
Granted: 1967-08-29
•
Expires: 1985-11-08
Abstract
No abstract record available.
Inventors
- 👤 Warren E Bulman
- 👤 Arthur E Middleton
- 👤 Jon A Sanborn
- 👤 Joseph W Harpster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:03
CPC Classifications
H; H10; H10N; H10N52/00; H10N52/80
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
196 words
AN APPARATUS, RESPONSIVE TO MAGNETIC FIELD EXCITATION OF FROM LOW TO GREATER THAN TEN MEGACYCLES PER SECOND FREQUENCIES, WHOSE OUTPUT, FOR A GIVEN AMPLITUDE OF H FIELD, IS ESSENTIALLY INDEPENDENT OF FREQUENCY, COMPRISING A HIGH FREQUENCY RESPONSIVE MAGNETIC CONCENTRATOR HAVING A POLE FACE, A MAGNETIC FIELD SENSITIVE ELEMENT SELECTED FROM THE GROUP CONSISTING OF A HIGH MOBILITY MAJORITY CARRIER EXTRINSIC SEMICONDUCTOR AND AN INTRINSIC SEMICONDUCTOR HAVING HIGH MOBILITY ANISOTROPY MOUNTED ASYMMETRICALLY ON SAID POLE FACE, ONE EDGE OF SAID ELEMENT BEING POSITIONED AT ONE EDGE OF SAID POLE FACE, OUTPUT LEADS ATTACHED BY CONTACTS TO SAID ELEMENT, ONE OUTPUT LEAD BEING IN CONTACT WITH SAID ELEMENT EDGE POSITIONED AT ONE EDGE OF SAID POLE FACE, THE OTHER OUTPUT LEAD BEING BENT ACROSS SAID ELEMENT TO THE CONTACT OF THE LEAD AT SAID EDGES, SAID LEADS EXTENDING PARALLEL TO ONE ANOTHER, THE PLANE SO FORMED BY SAID LEADS BEING COPLANAR TO THE FLUX LINES OF SAID CONCENTRATOR, STRAIGHT IN THE PLANE PARALLEL TO THE PLANE OF SAID POLE FACE, TO A POINT WHERE THE MAGNETIC FLUX PER UNIT AREA HAS DECREASED AT LEAST MORE THAN AN ORDER OF MAGNITUDE OF THE MAGNETIC FLUX AT THE POLE FACE.
Claim 2
Independent Claim
196 words
AN APPARATUS, RESPONSIVE TO MAGNETIC FIELD EXCITATION OF FROM LOW TO GREATER THAN TEN MEGACYCLES PER SECOND FREQUENCIES, WHOSE OUTPUT, FOR A GIVEN AMPLITUDE OF H FIELD, IS ESSENTIALLY INDEPENDENT OF FREQUENCY, COMPRISING A HIGH FREQUENCY RESPONSIVE MAGNETIC CONCENTRATOR HAVING A POLE FACE, A MAGNETIC FIELD SENSITIVE ELEMENT SELECTED FROM THE GROUP CONSISTING OF A HIGH MOBILITY MAJORITY CARRIER EXTRINSIC SEMICONDUCTOR AND AN INTRINSIC SEMICONDUCTOR HAVING HIGH MOBILITY ANISOTROPY MOUNTED ASYMMETRICALLY ON SAID POLE FACE, ONE EDGE OF SAID ELEMENT BEING POSITIONED AT ONE EDGE OF SAID POLE FACE, OUTPUT LEADS ATTACHED BY CONTACTS TO SAID ELEMENT, ONE OUTPUT LEAD BEING IN CONTACT WITH SAID ELEMENT EDGE POSITIONED AT ONE EDGE OF SAID POLE FACE, THE OTHER OUTPUT LEAD BEING BENT ACROSS SAID ELEMENT TO THE CONTACT OF THE LEAD AT SAID EDGES, SAID LEADS EXTENDING PARALLEL TO ONE ANOTHER, THE PLANE SO FORMED BY SAID LEADS BEING COPLANAR TO THE FLUX LINES OF SAID CONCENTRATOR, STRAIGHT IN THE PLANE PARALLEL TO THE PLANE OF SAID POLE FACE, TO A POINT WHERE THE MAGNETIC FLUX PER UNIT AREA HAS DECREASED AT LEAST MORE THAN AN ORDER OF MAGNITUDE OF THE MAGNETIC FLUX AT THE POLE FACE.
Claim 3
Dependent Claim
381 words
A HALL EFFECT APPARATUS, RESPONSIVE TO MAGNETIC FIELD EXCITATIONS OF FROM LOW TO GREATER THAN 10 MEGACYCLES PER SECOND FREQUENCIES, WHOSE OUTPUT, FOR A GIVEN AMPLITUDE OF H FIELD, IS ESSENTIALLY INDEPENDENT OF FREQUENCY, COMPRISING A HIGH FREQUENCY RESPONSIVE MAGNETIC CONCENTRATOR HAVING TWO POLE FACES DEFINING AN AIR GAP TO PROVIDE A MAGNETIC FIELD; A MAGNETIC FIELD SENSITIVE ELEMENT SELECTED FROM THE GROUP CONSISTING OF A HIGH MOBILITY MAJORITY CARRIER EXTRINSICE SEMICONDUCTOR AND AN INTRINSIC SEMICONDUCTOR HAVING HIGH MOBILITY ANISOTROPY MOUNTED ASYMMETRICALLY IN SAID AIR GAP AND WITH RESPECT TO SAID POLE FACES; SAID ELEMENT HAVING A GENERALLY RECTANGULAR FLAT SHAPE COMPRISING TWO OPPOSED LARGE AREA FACES, TWO OPPOSED SIDE EDGE FACES AND TWO OPPOSED LONGITUDINAL EDGE FACES, THE AREA OF EACH OF SAID OPPOSED LARGE AREA FACES BEING LESS THAN THE AREA OF EACH OF SAID POLE FACES, ONE OF SAID OPPOSED LONGITUDINAL EDGE FACES BEING POSITIONED AT ONE EDGE OF ONE OF SAID POLE FACES; EACH OF THE TWO OPPOSED SIDE EDGE FACES CONTAINING ELECTRODES ACROSS THEIR FACES AND EACH ELECTRODE CONTAINING A CURRENT INPUT LEAD ESSENTIALLY MIDWAY OF SAID ELECTRODE; EACH OF SAID LONGITUDINAL EDGE FACES HAVING A CONDUCTING VOLTAGE OUTPUT LEAD ATTACHED SUBSTANTIALLY MIDWAY OF EACH OF SAID LONGITUDINAL EDGES FACES; ONE OF SAID OUTPUT LEADS BEING STRAIGHT AND PERPENDICUALR TO THE LONGITUDINAL EDGE FACE ADJACENT SAID EDGE OF SAID POLE FACE; THE OTHER OF SAID OUTPUT LEADS BEING BENT STRAIGHT ABOUT AND ACROSS ONE OF SAID OPPOSED LARGE AREA FACES, PARALLEL TO THE SAID OPPOSED SIDE EDGE FACES, PERPENDICULAR TO SAID LONGITUDINAL EDGE FACES, PARALLEL TO THE LINES OF MAGNETIC FLUX BETWEEN SAID POLE FACES, AND IN A DIRECTION TO THE ATTACHMENT OF SAID FIRST NAMED OUTPUT LEAD TO SAID ELEMENT; SAID OUTPUT LEADS EXTENDING PARALLEL TO ONE ANOTHER, AND THE PLANE SO FORMED BY SAID LEADS COPLANAR TO THE FLUX LINES OF SAID CONCENTRATOR, STRAIGHT IN THE PLANE PARALLEL TO THE PLANE OF SIAD POLE FACE FOR AT LEAST A SUBSTANTIAL DISTANCE FROM SAID CONCENTRACTOR, THROUGH THE FRINGING FLUX FIELD OF SAID CONCENTRATOR TO A POINT WHERE THE MAGNETIC FLUX PER UNIT AREA HAS DECREASED AT LEAST MORE THAN ONE ORDER OF MAGNITUDE OF THE MAGNETIC FLUX IN THE AIR GAP; AND SAID OUTPUT LEADS BEING TWISTED TOGETHER BEYOND SAID POINT AND BEYOND SAID CONCENTRATOR.
Claim 4
Dependent Claim
381 words
A HALL EFFECT APPARATUS, RESPONSIVE TO MAGNETIC FIELD EXCITATIONS OF FROM LOW TO GREATER THAN 10 MEGACYCLES PER SECOND FREQUENCIES, WHOSE OUTPUT, FOR A GIVEN AMPLITUDE OF H FIELD, IS ESSENTIALLY INDEPENDENT OF FREQUENCY, COMPRISING A HIGH FREQUENCY RESPONSIVE MAGNETIC CONCENTRATOR HAVING TWO POLE FACES DEFINING AN AIR GAP TO PROVIDE A MAGNETIC FIELD; A MAGNETIC FIELD SENSITIVE ELEMENT SELECTED FROM THE GROUP CONSISTING OF A HIGH MOBILITY MAJORITY CARRIER EXTRINSICE SEMICONDUCTOR AND AN INTRINSIC SEMICONDUCTOR HAVING HIGH MOBILITY ANISOTROPY MOUNTED ASYMMETRICALLY IN SAID AIR GAP AND WITH RESPECT TO SAID POLE FACES; SAID ELEMENT HAVING A GENERALLY RECTANGULAR FLAT SHAPE COMPRISING TWO OPPOSED LARGE AREA FACES, TWO OPPOSED SIDE EDGE FACES AND TWO OPPOSED LONGITUDINAL EDGE FACES, THE AREA OF EACH OF SAID OPPOSED LARGE AREA FACES BEING LESS THAN THE AREA OF EACH OF SAID POLE FACES, ONE OF SAID OPPOSED LONGITUDINAL EDGE FACES BEING POSITIONED AT ONE EDGE OF ONE OF SAID POLE FACES; EACH OF THE TWO OPPOSED SIDE EDGE FACES CONTAINING ELECTRODES ACROSS THEIR FACES AND EACH ELECTRODE CONTAINING A CURRENT INPUT LEAD ESSENTIALLY MIDWAY OF SAID ELECTRODE; EACH OF SAID LONGITUDINAL EDGE FACES HAVING A CONDUCTING VOLTAGE OUTPUT LEAD ATTACHED SUBSTANTIALLY MIDWAY OF EACH OF SAID LONGITUDINAL EDGES FACES; ONE OF SAID OUTPUT LEADS BEING STRAIGHT AND PERPENDICUALR TO THE LONGITUDINAL EDGE FACE ADJACENT SAID EDGE OF SAID POLE FACE; THE OTHER OF SAID OUTPUT LEADS BEING BENT STRAIGHT ABOUT AND ACROSS ONE OF SAID OPPOSED LARGE AREA FACES, PARALLEL TO THE SAID OPPOSED SIDE EDGE FACES, PERPENDICULAR TO SAID LONGITUDINAL EDGE FACES, PARALLEL TO THE LINES OF MAGNETIC FLUX BETWEEN SAID POLE FACES, AND IN A DIRECTION TO THE ATTACHMENT OF SAID FIRST NAMED OUTPUT LEAD TO SAID ELEMENT; SAID OUTPUT LEADS EXTENDING PARALLEL TO ONE ANOTHER, AND THE PLANE SO FORMED BY SAID LEADS COPLANAR TO THE FLUX LINES OF SAID CONCENTRATOR, STRAIGHT IN THE PLANE PARALLEL TO THE PLANE OF SIAD POLE FACE FOR AT LEAST A SUBSTANTIAL DISTANCE FROM SAID CONCENTRACTOR, THROUGH THE FRINGING FLUX FIELD OF SAID CONCENTRATOR TO A POINT WHERE THE MAGNETIC FLUX PER UNIT AREA HAS DECREASED AT LEAST MORE THAN ONE ORDER OF MAGNITUDE OF THE MAGNETIC FLUX IN THE AIR GAP; AND SAID OUTPUT LEADS BEING TWISTED TOGETHER BEYOND SAID POINT AND BEYOND SAID CONCENTRATOR.
References Cited (Backward Citations)
US2877394A
Cited
US2988650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |