US3594671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducer means
Assignee: TRANSDUCER SYSTEMS Inc
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Filing: 1969-05-22
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Granted: 1971-07-20
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Expires: 1989-05-22
Abstract
Abstract A transducer of the proximity type having a primary winding, a plurality of separate secondary windings, and a core. The secondary windings are positioned with respect to the primary winding so that each of the secondary windings has a different output signal created by the same input signal to the primary winding. The different output signals are also caused to change in amplitude differently when a metal member is moved toward and away from the core of the transducer.
Inventors
- 👤 Amotz Frenkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:19
CPC Classifications
H; H01; H01F; H01F29/00; H01F29/08; H01F29/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
137 words
A transducer means comprising a primary winding having spaced series-connected first and second windings receiving an alternating energizing signal, a plurality of independent secondary windings positioned between said first and second windings of said primary winding each providing respective output signals, said primary and secondary windings being about a core opening, and a core consisting of a rod of magnetic material fixed in said core opening and extending within and magnetically coupling said secondary windings with said primary winding and being asymmetrically positioned with respect to said primary winding and said secondary windings said secondary windings being positioned with respect to said primary winding to produce respective output signals from said secondary windings of different respective amplitudes during energization of said primary winding, and a movable metallic member positioned with respect to an end of said core.
Claim 2
Dependent Claim
137 words
A transducer means comprising a primary winding having spaced series-connected first and second windings receiving an alternating energizing signal, a plurality of independent secondary windings positioned between said first and second windings of said primary winding each providing respective output signals, said primary and secondary windings being about a core opening, and a core consisting of a rod of magnetic material fixed in said core opening and extending within and magnetically coupling said secondary windings with said primary winding and being asymmetrically positioned with respect to said primary winding and said secondary windings said secondary windings being positioned with respect to said primary winding to produce respective output signals from said secondary windings of different respective amplitudes during energization of said primary winding, and a movable metallic member positioned with respect to an end of said core.
Claim 3
Dependent Claim
24 words
Transducer means in accordance with claim 1 in which the secondary windings are positioned in spaced side-by-side relation between the pair of primary windings.
Claim 4
Dependent Claim
49 words
Transducer means in accordance with claim 2 including a cylindrical bobbin of electrical insulating material having a hole extending longitudinally therethrough providing said core opening, the primary and secondary windings being wound around said bobbin and the core being fixed within and extending along the hole in said bobbin.
Claim 5
Dependent Claim
34 words
A transducer in accordance with claim 3 in which the bobbin has a plurality of annular grooves in its outer surface and each of said windings is in a separate one of said grooves.
Claim 6
Dependent Claim
81 words
Transducer means in accordance with claim 1 in which at least one of said plurality of secondary windings is positioned with respect to said primary winding to provide an output signal having an amplitude which increases when a metallic material is moved toward said core while at least another one of said secondary windings is positioned with respect to said primary winding to provide an output signal having an amplitude which decreases when said metallic material is moved toward said core.
Claim 7
Dependent Claim
43 words
Transducer means in accordance with claim 5 in which the output signal of said secondary winding which has its amplitude increase when a metallic material is moved toward said core has its amplitude decrease when said material is moved away from said core.
Claim 8
Dependent Claim
43 words
Transducer means in accordance with claim 5 in which the output signal of said secondary winding which has its amplitude decrease when a metallic material is moved toward said core has its amplitude increase when said maTerial is moved away from said core.
Claim 9
Dependent Claim
95 words
Transducer means in accordance with claim 2 in which at least one of said plurality of secondary windings is positioned with respect to the pair of spaced windings of said primary winding to provide an output signal having an amplitude which increases when a metallic material is moved away from said core while at least another one of said secondary windings is positioned with respect to the pair of spaced windings of said primary winding to provide an output signal having an amplitude which decreases when said metallic material is moved away from said core.
Claim 10
Dependent Claim
80 words
Transducer means in accordance with claim 8 in which the output signal of said secondary winding which has its amplitude increase when a metallic material is moved away from said core has its amplitude decrease when said metallic material is moved toward said core, and the output signal of said secondary winding which has its amplitude decrease when said metallic material is moved away from said core has its amplitude increase when said metallic material is moved toward said core.
Claim 11
Dependent Claim
64 words
Transducer means in accordance with claim 1 in which at least two of said plurality of secondary windings are positioned with respect to said primary winding to each provide an output signal having an amplitude which increases when a metallic material is moved toward said core, the amplitude of one of said output signals increasing to a greater extent than that of the other.
Claim 12
Dependent Claim
71 words
Transducer means in accordance with claim 2 in which at least two of said plurality of secondary windings are positioned with respect to the pair of spaced windings of said primary winding to each provide an output signal having an amplitude which decreases when a metallic material is moved away from said core, the amplitude of one of said output signals decreasing to a greater extent than that of the other.
Claim 13
Dependent Claim
64 words
Transducer means in accordance with claim 5 in which at least two of said plurality of secondary windings are positioned with respect to said primary winding to each provide an output signal having an amplitude which increases when a metallic material is moved toward said core, the amplitude of one of said output signals increasing to a greater extent than that of the other.
References Cited (Backward Citations)
US2563393A
Cited
US522506A
Cited
US1873824A
Cited
US2283926A
Cited
US2507344A
Cited
US2512976A
Cited
US2619588A
Cited
US2558573A
Cited
US2878455A
Cited
US3089081A
Cited
US3039069A
Cited
US3017590A
Cited
US3054976A
Cited
US3197722A
Cited
US3182248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |