US3776640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for measuring dimensional quantities
Assignee: Konan Camera Research Institue Inc
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Filing: 1972-03-01
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Granted: 1973-12-04
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Expires: 1992-03-01
Abstract
Abstract A method and apparatus for measuring dimensional quantities of articles and particularly articles in motion wherein an image of the article is formed on a patterned plate and then scanning the patterned plate and image formed thereon to produce electric pulses which are related to the dimension of the article and then counting the number of pulses.
Inventors
- 👤 Y Ikegami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:43
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/02; G01B11/04; G01B11/046
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
147 words
Apparatus for measuring the dimensional quantities of an article comprising a code plate having a striped pattern consisting of an alternate arrangement of transparent and opaque stripes, means forming an optical image of said article on said code plate to illuminate a portion of said code plate proportional to the size of said article, an opaque screen having a slit therein, means forming an otpical image of said illuminated portion of said code plate on one side of said screen, a photoelectric element disposed on the other side of said screen for receiving light passing through said slit, optical means disposed between said code plate and said screen for moving the image of said code plate relative to said screen to produce pulses of light traversing said slit for detection by said photoelectric element and means connected with said photoelectric element for counting the number of pulses.
Claim 2
Dependent Claim
147 words
Apparatus for measuring the dimensional quantities of an article comprising a code plate having a striped pattern consisting of an alternate arrangement of transparent and opaque stripes, means forming an optical image of said article on said code plate to illuminate a portion of said code plate proportional to the size of said article, an opaque screen having a slit therein, means forming an otpical image of said illuminated portion of said code plate on one side of said screen, a photoelectric element disposed on the other side of said screen for receiving light passing through said slit, optical means disposed between said code plate and said screen for moving the image of said code plate relative to said screen to produce pulses of light traversing said slit for detection by said photoelectric element and means connected with said photoelectric element for counting the number of pulses.
Claim 3
Dependent Claim
15 words
Apparatus according to claim 1 wherein the last said optical means is a rotary mirror.
Claim 4
Dependent Claim
16 words
Apparatus according to claim 1 wherein the last said optical means is a rotary parallel prism.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |