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US3882302A
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Electro-optical measuring device
Assignee: OPTRON Corp A CORP OF CT
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Filing: 1973-02-20
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Granted: 1975-05-06
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Expires: 1993-02-20
Abstract
Abstract A self-calibrating measuring device in which a particular unknown dimension of a given specimen is compared with the corresponding known dimension of a master specimen. The requisite dimensional information regarding the master specimen is obtained by direct physical measurement of the master specimen. That information is then stored in a memory from whence it may be read out in order to compare it with dimensional information, regarding the unknown specimens. Operation of the device is digital throughout. Two modes of operation allow display of information indicative either of the deviation between the master and unknown specimens, or of the actual dimension of the unknown specimen. Measurement of the master specimen by actual physical sensing calibrates the device such that it may be used to measure any given number of unknown specimens. Re-calibration may be accomplished chiefly by inserting a new master specimen. Thereafter the respective dimensions of any given number of unknown specimens may be compared with that of the new master specimen.
Inventors
- 👤 Arthur C Deichmiller
- 👤 Der Heide Jack C Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:33
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/02; G01B11/024; G01B11/24; G01B11/2433
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
156 words
A device for comparing the corresponding dimensions of a master specimen and a plurality of unknown specimens, comprising: means for dirEctly measuring a corresponding linear size dimension of a master specimen and a plurality of unknown specimens to produce a plurality of digital signals, said plurality comprising: a first digital signal defining said linear size dimension of said master specimen; and a plurality of second digital signals defining said corresponding linear size dimension of said plurality of unknown specimens; a memory for storing said first digital signal obtained from direct measurement of said linear size dimension of said master specimen; means for repetitively producing an output signal from said memory indicative of said first digital signal, said means not removing said first digital signal from said memory; and means for comparing respective ones of said plurality of second digital signals representative of the corresponding linear size dimensions of said unknown specimens with respective memory output signals.
Claim 2
Independent Claim
156 words
A device for comparing the corresponding dimensions of a master specimen and a plurality of unknown specimens, comprising: means for dirEctly measuring a corresponding linear size dimension of a master specimen and a plurality of unknown specimens to produce a plurality of digital signals, said plurality comprising: a first digital signal defining said linear size dimension of said master specimen; and a plurality of second digital signals defining said corresponding linear size dimension of said plurality of unknown specimens; a memory for storing said first digital signal obtained from direct measurement of said linear size dimension of said master specimen; means for repetitively producing an output signal from said memory indicative of said first digital signal, said means not removing said first digital signal from said memory; and means for comparing respective ones of said plurality of second digital signals representative of the corresponding linear size dimensions of said unknown specimens with respective memory output signals.
Claim 3
Dependent Claim
20 words
The device defined in claim 1, in which said first and second digital signals comprise counts of respective pulse trains.
Claim 4
Dependent Claim
22 words
The device defined in claim 2 in which said memory comprises a first counter which non-destructively outputs said stored count upon command.
Claim 5
Dependent Claim
18 words
The device defined in claim 3, in which said memory counter comprises a four bit, synchronous, up/down counter.
Claim 6
Dependent Claim
30 words
The device defined in claim 3, in which said means for comparing comprises a second counter which accepts said stored count outputted by said first counter and counts backwards therefrom.
Claim 7
Dependent Claim
27 words
The device defined in claim 2 in which said means for comparing comprises a comparing counter which accepts a count and counts backwards from said accepted count.
Claim 8
Dependent Claim
18 words
The device defined in claim 6 in which said comparing counter comprises a four bit, synchronous, up/down counter.
Claim 9
Dependent Claim
83 words
A device as defined in claim 1 wherein said measuring means comprises: a light source; an array of photosensitive elements, each element positioned to be illuminated by said light source unless blocked by one of said master or unknown specimens; means for sensing the position of said master or unknown specimens relative said array; and gating means responsive to said sensing means for outputting said first and second digital signals in response to a predetermined operative relationship between said specimens and said array.
Claim 10
Dependent Claim
127 words
A measuring device, comprising: means for generating a command signal; measuring means for providing digital signal indicative of a particular linear size dimension of a master specimen and digital signals indicative of a corresponding linear size dimension of plural unknown specimens when there is a time coincidence of said command signal with an operative spatial relationship between said master specimen or unknown specimens, respectively, and said measuring device; memory means for storing said digital signal indicative of said particular dimension of said master specimen; and gage means responsive to said memory means and said measuring means for successively comparing said stored digital signal indicative of said particular dimension of said master specimen with said digital signals indicative of the corresponding dimensions of a plurality of unknown specimens.
Claim 11
Dependent Claim
127 words
A measuring device, comprising: means for generating a command signal; measuring means for providing digital signal indicative of a particular linear size dimension of a master specimen and digital signals indicative of a corresponding linear size dimension of plural unknown specimens when there is a time coincidence of said command signal with an operative spatial relationship between said master specimen or unknown specimens, respectively, and said measuring device; memory means for storing said digital signal indicative of said particular dimension of said master specimen; and gage means responsive to said memory means and said measuring means for successively comparing said stored digital signal indicative of said particular dimension of said master specimen with said digital signals indicative of the corresponding dimensions of a plurality of unknown specimens.
Claim 12
Dependent Claim
27 words
A measuring device as defined in claim 9, in which said means for generating a command signal provides said command signal in response to a manually-operated switch.
Claim 13
Dependent Claim
22 words
A measuring device as defined in claim 9, in which said memory means stores said digital signal responsive to external switch means.
Claim 14
Dependent Claim
19 words
A measuring device as defined in claim 9, in which said gage means operates responsive to external switch means.
Claim 15
Dependent Claim
26 words
A measuring device as defined in claim 12, in which said command signal means and said memory means operate in response to said external switch means.
Claim 16
Dependent Claim
172 words
Apparatus for comparing a particular dimension of a master specimen with the corresponding dimension of an unknown specimen, comprising: means for generaTing a first pulse train when a master specimen is disposed in an operative relationship with said means for generating a first pulse train, the number of pulses in said first pulse train representing a particular linear size dimension of said master specimen; means for automatically generating a second pulse train in response to the placement of an unknown specimen in an identical operative relationship with said means for generating a second pulse train, the number of pulses in said second pulse train representing the linear size dimension of said unknown specimen which corresponds to said particular linear size dimension of said master specimen; means for counting said pulses in said first pulse train to produce a first count, and for storing said first count; and means for counting said pulses in said second pulse train to produce a second count and for comparing said second count with said first count.
Claim 17
Dependent Claim
172 words
Apparatus for comparing a particular dimension of a master specimen with the corresponding dimension of an unknown specimen, comprising: means for generaTing a first pulse train when a master specimen is disposed in an operative relationship with said means for generating a first pulse train, the number of pulses in said first pulse train representing a particular linear size dimension of said master specimen; means for automatically generating a second pulse train in response to the placement of an unknown specimen in an identical operative relationship with said means for generating a second pulse train, the number of pulses in said second pulse train representing the linear size dimension of said unknown specimen which corresponds to said particular linear size dimension of said master specimen; means for counting said pulses in said first pulse train to produce a first count, and for storing said first count; and means for counting said pulses in said second pulse train to produce a second count and for comparing said second count with said first count.
Claim 18
Dependent Claim
44 words
Apparatus as defined in claim 14 additionally comprising external switch means which further comprise: means for enabling said means for generating a first pulse train; means for enabling said means for generating a second pulse train; and means for clearing said stored first count.
Claim 19
Dependent Claim
227 words
Apparatus for comparing a particular dimension of a master specimen with the corresponding dimension of an unknown specimen, comprising: measuring means for providing a first and second series of pulsee trains when said respective specimens are placed in operative relationship with said measuring means, said pulse trains of said first series of pulse trains representing said particular linear size dimension of said master specimen, and said pulse trains of said second series of pulse trains representing said corresponding linear size dimension of said unknown specimen; logic means responsive to said measuring means for outputting one of said pulse trains of said first series of pulse trains and responsive to the position of said unknown specimen relative said measuring means for automatically outputting one of said pulse trains of said second series of pulse trains; memory means responsive to said logic means for making and storing a first count of the number of pulses in said one of said pulse trains of said first series of pulse trains, and for outputting said first count; and gage means responsive to said logic means and said memory means for receiving said first count from said memory means and for subtracting therefrom a second count obtained by counting the number of pulses in said one of said pulse trains of said second series of pulse trains to produce a gage signal.
Claim 20
Dependent Claim
227 words
Apparatus for comparing a particular dimension of a master specimen with the corresponding dimension of an unknown specimen, comprising: measuring means for providing a first and second series of pulsee trains when said respective specimens are placed in operative relationship with said measuring means, said pulse trains of said first series of pulse trains representing said particular linear size dimension of said master specimen, and said pulse trains of said second series of pulse trains representing said corresponding linear size dimension of said unknown specimen; logic means responsive to said measuring means for outputting one of said pulse trains of said first series of pulse trains and responsive to the position of said unknown specimen relative said measuring means for automatically outputting one of said pulse trains of said second series of pulse trains; memory means responsive to said logic means for making and storing a first count of the number of pulses in said one of said pulse trains of said first series of pulse trains, and for outputting said first count; and gage means responsive to said logic means and said memory means for receiving said first count from said memory means and for subtracting therefrom a second count obtained by counting the number of pulses in said one of said pulse trains of said second series of pulse trains to produce a gage signal.
Claim 21
Dependent Claim
16 words
Apparatus as defined in claim 16, additionally comprising display means for visually displaying said gage signal.
Claim 22
Independent Claim
181 words
A method for comparing a dimension of a plurality of unknown specimens with a particular dimension of a master specimen, which comprises: a. generating a digital signal pulse train responsive to the physical presence of said master specimen indicative of the magnitude of said particular dimension of said master specimen; b. counting the pulses of said pulse train indicative of the magnitude of said measured dimension of said master specimen to produce a first count; c. storing said first count; d. sensing the location of said unknown specimens in a predetermined position; e. automatically generating a digital signal pulse train indicative of the magnitude of said dimension of a first unknown specimen in response to said sensing step; f. counting said pulses of said digital signal pulse train indicative of the magnitude of said measured dimension of said unknown specimen to produce a second count; g. subtracting one of said second count and said stored first count from the other of said second count and said stored first count; and h. repeating steps (d) through (g) for each succeeding unknown specimen.
Claim 23
Independent Claim
181 words
A method for comparing a dimension of a plurality of unknown specimens with a particular dimension of a master specimen, which comprises: a. generating a digital signal pulse train responsive to the physical presence of said master specimen indicative of the magnitude of said particular dimension of said master specimen; b. counting the pulses of said pulse train indicative of the magnitude of said measured dimension of said master specimen to produce a first count; c. storing said first count; d. sensing the location of said unknown specimens in a predetermined position; e. automatically generating a digital signal pulse train indicative of the magnitude of said dimension of a first unknown specimen in response to said sensing step; f. counting said pulses of said digital signal pulse train indicative of the magnitude of said measured dimension of said unknown specimen to produce a second count; g. subtracting one of said second count and said stored first count from the other of said second count and said stored first count; and h. repeating steps (d) through (g) for each succeeding unknown specimen.
Claim 24
Independent Claim
169 words
A method for determining particular corresponding linear size dimensions of a plUrality of unknown specimens, utilizing a video array comprising a light source directed toward a linear array of light sensing means, which method comprises: a. generating a pulse train containing a number of pulses equal to the total number of light sensing means; b. counting the number of said pulses which is equal to the total number of light sensing means to produce a first count; c. storing said first count; d. generating a pulse train, the number of pulses of which is indicative of said particular linear size dimension of said first unknown specimen; e. counting said pulses indicative of said particular linear size dimension of one of said unknown specimens to produce a second count; f. subtracting one of said first and second counts from the other of said first and second counts to produce a difference count; g. displaying said difference count; and h. repeating steps (d) through (g) once for each remaining unknown specimen.
Claim 25
Independent Claim
169 words
A method for determining particular corresponding linear size dimensions of a plUrality of unknown specimens, utilizing a video array comprising a light source directed toward a linear array of light sensing means, which method comprises: a. generating a pulse train containing a number of pulses equal to the total number of light sensing means; b. counting the number of said pulses which is equal to the total number of light sensing means to produce a first count; c. storing said first count; d. generating a pulse train, the number of pulses of which is indicative of said particular linear size dimension of said first unknown specimen; e. counting said pulses indicative of said particular linear size dimension of one of said unknown specimens to produce a second count; f. subtracting one of said first and second counts from the other of said first and second counts to produce a difference count; g. displaying said difference count; and h. repeating steps (d) through (g) once for each remaining unknown specimen.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |