| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c8251f7d987c937b0413224636622325 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-8983
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-8915 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-89
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-898 |
| filingDate |
1977-02-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1979-10-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3c7527e013fa894f61664320240511af
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b7803f9b02ddc86f78cc39b34dff6a91
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c627c52102c2c49db2df7b65a9294a70
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b529bd36f1668b70259d3ec19aa8eeeb |
| publicationDate |
1979-10-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4170419-A |
| titleOfInvention |
Optical web inspection system |
| abstract |
The specification discloses an optical web inspection system for detecting imperfections in a web having a longitudinal axis and moving in a plane across an inspection area. Radiation means is disposed above the plane of the web and transverse to the longitudinal axis of the web for directing radiant energy on the web at the inspection area. A plurality of sensors are mounted transverse to the longitudinal axis of the web and above the inspection area for receiving reflected radiation from successive transverse portions of the web passing across the inspection area. The plurality of sensors generate electrical output signals representing the intensity of the reflected radiation from the successive transverse portions of the web. Circuitry for periodically summing the electrical output signals from selected ones of the sensors is provided to generate a summation signal representative of the sum of reflected radiation from selected discrete segments of a plurality of the transverse portions of the web. The system further includes circuitry for comparing at least one of the electrical output signals with the summation signal for determining whether an imperfection exists within the web. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2019049391-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6236429-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2013076646-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109142641-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6919965-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0604875-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2003168614-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005021280-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2003169433-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6934028-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2683971-C2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2003169424-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6900450-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0604875-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2282444-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7047153-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2282444-B
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http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005122531-A1
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http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7935296-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108351308-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20180081574-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004022426-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004170301-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2019502901-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006232702-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7123765-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0350680-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0350680-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5847834-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111537519-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7425982-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111537519-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7146049-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4266220-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7113627-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6885451-B2 |
| priorityDate |
1977-02-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |