Patent US3886385A successfully refreshed from Google Patents.
US3886385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rate of motion detector
Assignee: Individual
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Filing: 1972-11-15
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Granted: 1975-05-27
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Expires: 1992-11-15
Abstract
Abstract The rate of motion of a relatively large body with respect to another body is detected by apparatus carried on the bodies. A magnet on one body provides a magnetic field between pole pieces and a set of relatively short electrical conductors, each conductor extending transversely from a relatively long electrical conductor, all carried on the other body, is positioned thereon to move through the magnetic field, one short conductor after another. An electrical contact contacts the extending end of at least one short conductor at a time while the contacted conductor is moving in the magnetic field, producing an electrical signal between the contact and the long conductor, which is representative of the rate of motion.
Inventors
- 👤 Francesco L Bacchialoni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:37
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/26; G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/46; G01P3/465; H02K23/00; H02K23/26; H02K23/28
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
190 words
Apparatus for detecting the rate of motion of one body relative to another body comprising in combination, means supported by one of said bodies for producing a substantially steady magnetic field, at a given area which is fixed relative to said supporting body, a set of electrical conductors fixed to the other of said bodies including a relatively long electrical conductor which is continuous from one end to the other end thereof and a plurality of relatively short electrical conductors, the short conductors being disposed side by side and each electrically connected at one end only to the long conductor at spaced points therealong, the orientation of he set on said other body being such that the short conductors enter and leave said magnetic field area one after another at a rate proportional to the said relative rate of motion, and an electrical contact for contacting the other end of at least one of the short conductors at a time while said contacted short conductor is in the magnetic field, whereby a signal is produced between the contact and the long conductor, said signal being representative of the said rate.
Claim 2
Dependent Claim
190 words
Apparatus for detecting the rate of motion of one body relative to another body comprising in combination, means supported by one of said bodies for producing a substantially steady magnetic field, at a given area which is fixed relative to said supporting body, a set of electrical conductors fixed to the other of said bodies including a relatively long electrical conductor which is continuous from one end to the other end thereof and a plurality of relatively short electrical conductors, the short conductors being disposed side by side and each electrically connected at one end only to the long conductor at spaced points therealong, the orientation of he set on said other body being such that the short conductors enter and leave said magnetic field area one after another at a rate proportional to the said relative rate of motion, and an electrical contact for contacting the other end of at least one of the short conductors at a time while said contacted short conductor is in the magnetic field, whereby a signal is produced between the contact and the long conductor, said signal being representative of the said rate.
Claim 3
Dependent Claim
29 words
Apparatus as in claim 1 wherein, the short conductors are substantially evenly spaced along the long conductor, whereby said electrical signal is a train of substantially overlapping regular impulses.
Claim 4
Dependent Claim
23 words
Apparatus as in claim 1 wherein, the short conductors are disposed on the other body transverse to the direction of the relative motion.
Claim 5
Dependent Claim
30 words
Apparatus as in claim 1 wherein, the short conductors are disposed on the other body so that they are transverse to the magnetic field as they pass through the field.
Claim 6
Dependent Claim
41 words
Apparatus as in claim 1 wherein, the long conductor is oriented substantially parallel to the direction of the relative motion and the short conductors are transvere to the direction of motion of one of the bodies relative to the other body.
Claim 7
Dependent Claim
18 words
Apparatus as in claim 5 wherein, the relative motion is transverse to the direction of the magnetic field.
Claim 8
Dependent Claim
45 words
Apparatus as in claim 1 wherein, the electric contact is a sliding contact substantially fixed relative to the one body, a second electrical sliding contact substantially fixed relative to the one body contacts the long conductor, and the signal is produced between said electric contacts.
Claim 9
Dependent Claim
41 words
Apparatus as in claim 1 wherein, the electrical contact is a sliding contact substantially fixed relative to the one body, a flexible electrical conductor connects to the long conductor, and the signal is produced between the contact and the flexible conductor.
Claim 10
Dependent Claim
65 words
Apparatus as in claim 1 wherein, two of said sets of conductors are included on opposite sides of the one body so that the short conductors of the two set simultaneously pass through the magnetic field, and different sliding electrical contacts contact at least one of the short conductors of each set at a time while said contacted short conductor is in the magnetic field.
Claim 11
Dependent Claim
36 words
Apparatus as in claim 9 wherein, the short conductors in one set extend from the long conductor thereof in the same direction as the short conductors in the other set extend from the long conductor thereof.
Claim 12
Dependent Claim
36 words
Apparatus as in claim 9 wherein, the short conductors in one set extend from the long conductor thereof in the opposite direction as the short conductors in the other set extend from the long conductors thereof.
Claim 13
Dependent Claim
20 words
Apparatus as in claim 10 wherein, the sliding electrical contacts are electrically connected, and the signal is a current signal.
Claim 14
Dependent Claim
19 words
Apparatus as in claim 11 wherein, the signal is produced between the sliding contacts and is a voltage signal.
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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |