Patent US3597043A successfully refreshed from Google Patents.
US3568104A
Expired / Lapsed
US
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Sonic delay line device
Assignee: General Electric Co
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Filing: 1968-12-20
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Granted: 1971-03-02
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Expires: 1988-12-20
Abstract
Abstract A multifaced rod of acoustical transmitting material, for use with an object identifying apparatus, has attached to one of its ends a piezoelectric element. Preselected faces of the rod are at spaced intervals, slotted, or notched, perpendicular to the axis of the rod and to the face in which they are cut. An acoustical wave produced by the piezoelectric element in response to an electrical signal is reflected by each of the notches in turn. The resulting echoes are received by the piezoelectric element which in response thereto produces a coded representation of the identity of the object to be identified.
Inventors
- 👤 Francis M Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:49
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/74; G01S13/75; G01S13/751; G01S13/755; G10; G10K; G10K11/00; G10K11/18; G10K11/24; H; H03; H03H; H03H9/00; H03H9/30; H03H9/36
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
74 words
A sonic coding apparatus comprising: a. a transducer for producing a sonic impulse and for producing a signal in response to a reflected impulse; and b. an elongated member of sonic transmitting maTerial attached to said transducer, said member having a series of deformities spaced along the length thereof, said deformities serving to produce a series of reflected impulses for actuating said transducer to produce a coded output corresponding to the number of deformities.
Claim 2
Dependent Claim
74 words
A sonic coding apparatus comprising: a. a transducer for producing a sonic impulse and for producing a signal in response to a reflected impulse; and b. an elongated member of sonic transmitting maTerial attached to said transducer, said member having a series of deformities spaced along the length thereof, said deformities serving to produce a series of reflected impulses for actuating said transducer to produce a coded output corresponding to the number of deformities.
Claim 3
Dependent Claim
13 words
The invention claimed in claim 1 wherein said transducer is a piezoelectric crystal.
Claim 4
Dependent Claim
25 words
The invention claimed in claim 1 wherein the sequential order of said coded output is proportional to the distance between said transducer and said deformities.
Claim 5
Dependent Claim
42 words
The invention claimed in claim 1 wherein said elongated member is of polygonal cross section, and said deformities are disposed along selected sides of said member so that each one of a predetermined number of said sides contains one of said deformities.
Claim 6
Dependent Claim
24 words
The invention claimed in claim 4 wherein said deformities are indentations traversing the sides of said elongated member substantially perpendicular to the longitudinal axis.
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |