Patent US3724958A successfully refreshed from Google Patents.
US3724958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scanning and control apparatus
Assignee: Knox Inc
•
Filing: 1970-03-09
•
Granted: 1973-04-03
•
Expires: 1990-03-09
Abstract
Abstract Apparatus for measuring differences in a dimension of objects and actuating equipment responsive to a plurality of magnitudes of the dimension employs a plurality of first electrical circuits, each having first and second states of energization and corresponding to a particular magnitude of the dimension, and a plurality of second electrical circuits, respectively corresponding to one of the first circuits and arranged when energized to actuate the equipment in accordance with one of the plurality of magnitudes of the dimension. The second circuit corresponding to a particular magnitude is energized when the corresponding first circuit has its first state of energization and the first circuit corresponding to the next magnitude greater than the particular magnitude has its second state of energization.
Inventors
- 👤 J Callan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:02
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/0035; G01B11/00; G01B11/08; G01B11/10; G01B11/105
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
250 words
Apparatus for measuring the distance between opposed surfaces of a succession of objects in which said distance is a variable and for producing signals indicating the respective values of such measurements, said apparatus comprising: a measuring station to and from which said objects are successively moved; a row of spaced photoelectric cells at one side of said station, said row being parallel to and of greater length than the distance to be measured; a source of light at the opposite side of said station arranged to impinge on said cells in the absence of a said object at said station and to be blocked off by the presence of a said object at said station from those cells which the said object, between its said opposed surfaces, is opposite; said cells being placed in two different conditions by the presence and absence respectively of light from said source impinging thereon; a plurality of first electrical circuits each coupled to one of said cells and responsive to one only of said different conditions of the cell coupled thereto to provide a predetermined electrical output; and a plurality of second electrical circuits each having therein control means connected to a successive pair of said first circuits and responsive only to a said predetermined electrical output from one of said pair of first electrical circuits connected thereto and the absence of such an output from the other circuit of said pair to provide a said signal from the second electrical circuit controlled thereby.
Claim 2
Dependent Claim
250 words
Apparatus for measuring the distance between opposed surfaces of a succession of objects in which said distance is a variable and for producing signals indicating the respective values of such measurements, said apparatus comprising: a measuring station to and from which said objects are successively moved; a row of spaced photoelectric cells at one side of said station, said row being parallel to and of greater length than the distance to be measured; a source of light at the opposite side of said station arranged to impinge on said cells in the absence of a said object at said station and to be blocked off by the presence of a said object at said station from those cells which the said object, between its said opposed surfaces, is opposite; said cells being placed in two different conditions by the presence and absence respectively of light from said source impinging thereon; a plurality of first electrical circuits each coupled to one of said cells and responsive to one only of said different conditions of the cell coupled thereto to provide a predetermined electrical output; and a plurality of second electrical circuits each having therein control means connected to a successive pair of said first circuits and responsive only to a said predetermined electrical output from one of said pair of first electrical circuits connected thereto and the absence of such an output from the other circuit of said pair to provide a said signal from the second electrical circuit controlled thereby.
Claim 3
Dependent Claim
43 words
Apparatus according to claim 1 which includes control means connected to said second plurality of circuits and to equipment for operating on said succession of objects for differently adjusting said equipment according to which of said second plurality of circuits produces said signal.
Claim 4
Dependent Claim
19 words
Apparatus according to claim 1 which comprises a conveyor for moving said objects to and from said measuring station.
Claim 5
Dependent Claim
87 words
Apparatus according to claim 1 which includes: means for adjustably moving said cells and light source relative to an object at said station to a position wherein said object does not block the light from said source from at least One cell at each end of said row; detector means to detect the arrival of said cells in said position; and means under the control of said detector means for preventing measuring operation of said cells and circuits until such arrival is detected by said detector means.
Claim 6
Dependent Claim
56 words
Apparatus according to claim 1 wherein said cells have resistances therein coupled to the respective circuit of said first plurality of circuits, the electrical resistance of each resistance being different when light from said source is blocked from its cell than when it is not, said different resistances constituting said two different conditions of said cells.
References Cited (Backward Citations)
US2433557A
Cited
US3513321A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |