DE69310977D1 - Unterteilter Lichtvorhang - Google Patents

Unterteilter Lichtvorhang

Info

Publication number
DE69310977D1
DE69310977D1 DE69310977T DE69310977T DE69310977D1 DE 69310977 D1 DE69310977 D1 DE 69310977D1 DE 69310977 T DE69310977 T DE 69310977T DE 69310977 T DE69310977 T DE 69310977T DE 69310977 D1 DE69310977 D1 DE 69310977D1
Authority
DE
Germany
Prior art keywords
light curtain
divided light
divided
curtain
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
DE69310977T
Other languages
English (en)
Other versions
DE69310977T2 (de
Inventor
Peter E Anderson
James A Ashford
Richard Klass
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Omron Scientific Technologies Inc
Original Assignee
Scientific Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25290943&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69310977(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Scientific Technologies Inc filed Critical Scientific Technologies Inc
Application granted granted Critical
Publication of DE69310977D1 publication Critical patent/DE69310977D1/de
Publication of DE69310977T2 publication Critical patent/DE69310977T2/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers
DE69310977T 1992-02-28 1993-02-26 Unterteilter Lichtvorhang Revoked DE69310977T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/843,762 US5198661A (en) 1992-02-28 1992-02-28 Segmented light curtain system and method

Publications (2)

Publication Number Publication Date
DE69310977D1 true DE69310977D1 (de) 1997-07-03
DE69310977T2 DE69310977T2 (de) 1997-12-18

Family

ID=25290943

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69310977T Revoked DE69310977T2 (de) 1992-02-28 1993-02-26 Unterteilter Lichtvorhang

Country Status (4)

Country Link
US (2) US5198661A (de)
EP (1) EP0562726B1 (de)
CA (1) CA2090190C (de)
DE (1) DE69310977T2 (de)

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Also Published As

Publication number Publication date
US5198661A (en) 1993-03-30
US5281809A (en) 1994-01-25
EP0562726B1 (de) 1997-05-28
DE69310977T2 (de) 1997-12-18
CA2090190A1 (en) 1993-08-29
CA2090190C (en) 2000-08-22
EP0562726A1 (de) 1993-09-29

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Legal Events

Date Code Title Description
8327 Change in the person/name/address of the patent owner

Owner name: SCIENTIFIC TECHNOLOGIES INCORPORATED, FREMONT, CAL

8363 Opposition against the patent
8331 Complete revocation