Patent US3663108A successfully refreshed from Google Patents.
US3663108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring the dimensions of objects which includes a carrier which travels across the objects to be measured
Assignee: Toshiba Corp
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Filing: 1970-04-16
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Granted: 1972-05-16
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Expires: 1990-04-16
Abstract
Abstract An apparatus for measuring the width of a web material includes a carrier which travels across the web. The carrier has mounted thereon a photoelectric transducer and a magnetic induction type pulse generator for enabling exact detection of the opposite edge portions of the web. An elongated magnetically recorded fixed scale extends through the entire travel span of the carrier and is magnetically coupled to the pulse generator. The scale includes finely distributed magnetically recorded marks on the magnetic base thereof, along the lengthwise direction of said scale. A counter counts the pulses which emanate from the pulse generator in the absence of a detected electric signal from the photoelectric transducer, the absence indicating the presence of the web such that the opposite edge portions of the web are readily detected and measurement of the web width made.
Inventors
- 👤 Hiroshi Yamamuro
- 👤 Akira Kawase
- 👤 Akio Sakai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:55
CPC Classifications
G; G01; G01B; G01B13/00; G01B13/02; G01B13/04; G01B11/00; G01B11/02; G01B11/04; G01B11/046; G01B7/00; G01B7/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
230 words
An apparatus for measuring the dimensions of objects comprising: an elongated magnetically graduated scale having magnetically recorded marks thereon with a predetermined interval between adjacent ones of said marks and having a length larger than the dimensions of the objects to be measured; a first carrier mounted on a fixed base, said first carrier being capable of motion along said scale; a magnetic induction type pulse generator mounted on said first carrier, said pulse generator being magnetically coupled to said scale to pick up marks recorded thereon; detecting means mounted on said first carrier to generate an electric signal in response to the existence of said object, said detecting means including: a photoelectric transducer mounted on said first carrier, a laser source mounted on a fixed base, said transducer and laser source being respectively located at opposite surfaces of said objects to be measured, a second carrier mounted on a fixed base, said second carrier being capable of movement along said scale with said first carrier upon which said photoelectric transducer is mounted, and a mirror mounted on said second carrier to direct a laser beam emanating from said laser source upon said transducer; and, means for counting said selected ones of said recorded marks of said scale in accordance with the electrical signal of said detecting means which is responsive to the existence of said objects to be measured.
Claim 2
Independent Claim
230 words
An apparatus for measuring the dimensions of objects comprising: an elongated magnetically graduated scale having magnetically recorded marks thereon with a predetermined interval between adjacent ones of said marks and having a length larger than the dimensions of the objects to be measured; a first carrier mounted on a fixed base, said first carrier being capable of motion along said scale; a magnetic induction type pulse generator mounted on said first carrier, said pulse generator being magnetically coupled to said scale to pick up marks recorded thereon; detecting means mounted on said first carrier to generate an electric signal in response to the existence of said object, said detecting means including: a photoelectric transducer mounted on said first carrier, a laser source mounted on a fixed base, said transducer and laser source being respectively located at opposite surfaces of said objects to be measured, a second carrier mounted on a fixed base, said second carrier being capable of movement along said scale with said first carrier upon which said photoelectric transducer is mounted, and a mirror mounted on said second carrier to direct a laser beam emanating from said laser source upon said transducer; and, means for counting said selected ones of said recorded marks of said scale in accordance with the electrical signal of said detecting means which is responsive to the existence of said objects to be measured.
Claim 3
Dependent Claim
36 words
An apparatus for measuring the dimensions of objects according to claim 1, wherein said photoelectric transducer has an elongated tubular light guide for receiving only the light beam from said laser source directed to said transducer.
Claim 4
Dependent Claim
78 words
An apparatus for measuring the dimensions of objects according to claim 1, wherein switching means are provided for moving said first carrier from a given sidE of said objects to be measured to the other side of said objects to be measured during a measuring operation such that for a succeeding measuring operation said first carrier is moved from the other side of said objects to be measured back to said first mentioned given side of said objects.
Claim 5
Dependent Claim
71 words
An apparatus for measuring the dimensions of objects according to claim 1, wherein is further included an AND gate, the inputs to said AND gate being said electric signal generated by said detecting means and the pulses from said pulses generator as it passes a recorded mark such that said selected ones of said recorded marks will be counted only when said first carrier passes across said objects to be measured.
References Cited (Backward Citations)
US3541337A
Cited
US3555288A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |