US3557374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangements for testing blocks of cigarettes by optically imaging their ends on a photomultiplier cathode
Assignee: Individual
•
Filing: 1968-12-23
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Granted: 1971-01-19
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Expires: 1988-12-23
Abstract
Abstract An arrangement for checking blocks of cigarettes comprises a photomultiplier for forming an image of ends of cigarettes of the block, and electric means responsive to illumination of elements of said image for creating a control effect under the control of said element illumination.
Inventors
- 👤 Alfred Schmermund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:03
CPC Classifications
B; B65; B65B; B65B19/00; B65B19/28; B65B19/30; A; A24; A24C; A24C5/00; A24C5/32; A24C5/34; A24C5/3412; G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/07; Y; Y10; Y10S; Y10S131/00; Y10S131/908
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
113 words
A cigarette inspection device comprising a photomultiplier including a photocathode, a light source arranged to direct light obliquely onto the end faces of a block of cigarettes located in a checking position, a lens system arranged to focus an individual image of only the end face of each cigarette onto said photocathode, the lens system being such that said images are formed by light reflected from a plane defined by said end faces, whereby said photomultiplier generates an electrical error signal when the intensity of an image is reduced in correspondence to the absence of a properly filled cigarette, and electrical means responsive to said electrical error signal for performing a control function.
Claim 2
Dependent Claim
113 words
A cigarette inspection device comprising a photomultiplier including a photocathode, a light source arranged to direct light obliquely onto the end faces of a block of cigarettes located in a checking position, a lens system arranged to focus an individual image of only the end face of each cigarette onto said photocathode, the lens system being such that said images are formed by light reflected from a plane defined by said end faces, whereby said photomultiplier generates an electrical error signal when the intensity of an image is reduced in correspondence to the absence of a properly filled cigarette, and electrical means responsive to said electrical error signal for performing a control function.
Claim 3
Dependent Claim
125 words
An arrangement for checking cigarettes comprising means for successively placing blocks of cigarettes into a checking position, a photomultiplier including a photocathode, a light source arranged to direct light obliquely onto the end faces of a block of cigarettes located in the checking position, a lens system arranged to focus an individual image of only the end face of each cigarette onto said photocathode, the lens system being such that said images are formed by light reflected from a plane defined by said end faces, whereby said photomultiplier generates an electrical error signal when the intensity of an image is reduced in correspondence to the absence of a properly filled cigarette, and electrical means responsive to said electrical error signal for performing a control function.
Claim 4
Dependent Claim
125 words
An arrangement for checking cigarettes comprising means for successively placing blocks of cigarettes into a checking position, a photomultiplier including a photocathode, a light source arranged to direct light obliquely onto the end faces of a block of cigarettes located in the checking position, a lens system arranged to focus an individual image of only the end face of each cigarette onto said photocathode, the lens system being such that said images are formed by light reflected from a plane defined by said end faces, whereby said photomultiplier generates an electrical error signal when the intensity of an image is reduced in correspondence to the absence of a properly filled cigarette, and electrical means responsive to said electrical error signal for performing a control function.
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |