CA940615A - Retro-reflective type detector heads with fail-safe feature - Google Patents

Retro-reflective type detector heads with fail-safe feature

Info

Publication number
CA940615A
CA940615A CA139,934A CA139934A CA940615A CA 940615 A CA940615 A CA 940615A CA 139934 A CA139934 A CA 139934A CA 940615 A CA940615 A CA 940615A
Authority
CA
Canada
Prior art keywords
retro
fail
reflective type
type detector
detector heads
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.)
Expired
Application number
CA139,934A
Other languages
English (en)
Other versions
CA139934S (en
Inventor
Raymond B. Fertig
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.)
Appalachian Electronic Instruments Inc
Original Assignee
Appalachian Electronic Instruments 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
Application filed by Appalachian Electronic Instruments Inc filed Critical Appalachian Electronic Instruments Inc
Application granted granted Critical
Publication of CA940615A publication Critical patent/CA940615A/en
Expired 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
    • G01V8/12—Detecting, e.g. by using light barriers using one transmitter and one receiver
    • G01V8/14—Detecting, e.g. by using light barriers using one transmitter and one receiver using reflectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/55—Specular reflectivity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8901—Optical details; Scanning details

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)
CA139,934A 1972-02-17 1972-04-18 Retro-reflective type detector heads with fail-safe feature Expired CA940615A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22716172A 1972-02-17 1972-02-17

Publications (1)

Publication Number Publication Date
CA940615A true CA940615A (en) 1974-01-22

Family

ID=22852010

Family Applications (1)

Application Number Title Priority Date Filing Date
CA139,934A Expired CA940615A (en) 1972-02-17 1972-04-18 Retro-reflective type detector heads with fail-safe feature

Country Status (8)

Country Link
US (1) US3740562A (US06265458-20010724-C00018.png)
JP (1) JPS5246500B2 (US06265458-20010724-C00018.png)
CA (1) CA940615A (US06265458-20010724-C00018.png)
CH (1) CH567263A5 (US06265458-20010724-C00018.png)
FR (1) FR2173876B1 (US06265458-20010724-C00018.png)
GB (1) GB1409376A (US06265458-20010724-C00018.png)
IT (1) IT957997B (US06265458-20010724-C00018.png)
NL (1) NL7207001A (US06265458-20010724-C00018.png)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3842258A (en) * 1973-06-25 1974-10-15 Mekontrol Inc Photo relay comprising light-transmitting plate also used as a circuit board
US3976075A (en) * 1975-02-24 1976-08-24 Personal Products Company Tampon blank with reduced sloughing properties
US4201910A (en) * 1978-03-27 1980-05-06 Innovation Industries, Inc. Photosensor assembly
JPS5931814B2 (ja) * 1978-06-19 1984-08-04 オムロン株式会社 反射形光電スイッチ
DE3320528A1 (de) * 1983-06-07 1984-12-13 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Tuersicherungs-lichtschranke
DE3513475A1 (de) * 1985-04-15 1986-10-16 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Lumineszenztaster
DE3875113T2 (de) * 1988-07-05 1993-02-25 Wako Corp Detektionseinrichtung.
JP2688361B2 (ja) * 1988-08-02 1997-12-10 正己 山川 光電センサ
US4965548A (en) * 1989-02-09 1990-10-23 Banner Engineering Corp. Level indicator with alarm
FR2744838B1 (fr) * 1996-02-13 1998-03-27 Schneider Electric Sa Detecteur photoelectrique a renvoi de faisceau
JP4062075B2 (ja) * 2002-12-04 2008-03-19 ブラザー工業株式会社 情報処理装置
SE0401676D0 (sv) * 2004-06-29 2004-06-29 Iropa Ag Optoelektronisk garngivar-anordning
US10025990B2 (en) 2014-05-21 2018-07-17 Universal City Studios Llc System and method for tracking vehicles in parking structures and intersections
US10061058B2 (en) 2014-05-21 2018-08-28 Universal City Studios Llc Tracking system and method for use in surveying amusement park equipment
US10207193B2 (en) * 2014-05-21 2019-02-19 Universal City Studios Llc Optical tracking system for automation of amusement park elements

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1221927B (de) * 1964-05-06 1966-07-28 Sick Erwin Lichtschranke, insbesondere Unfallschutzvorrichtung
US3530690A (en) * 1968-03-29 1970-09-29 Appalachian Electronic Instr Yarn inspection apparatus

Also Published As

Publication number Publication date
FR2173876B1 (US06265458-20010724-C00018.png) 1976-08-06
DE2223591A1 (de) 1973-08-23
FR2173876A1 (US06265458-20010724-C00018.png) 1973-10-12
US3740562A (en) 1973-06-19
GB1409376A (en) 1975-10-08
CH567263A5 (US06265458-20010724-C00018.png) 1975-09-30
JPS5246500B2 (US06265458-20010724-C00018.png) 1977-11-25
DE2223591B2 (US06265458-20010724-C00018.png) 1974-11-21
IT957997B (it) 1973-10-20
JPS4890576A (US06265458-20010724-C00018.png) 1973-11-26
NL7207001A (US06265458-20010724-C00018.png) 1973-08-21

Similar Documents

Publication Publication Date Title
CA990098A (en) Borehole stress-property measuring system
CA997029A (en) Fail-safe position detector
AU460872B2 (en) Heat-sensitive record
CA1026865A (en) Error detection systems
CA940615A (en) Retro-reflective type detector heads with fail-safe feature
CA994824A (en) Blocking sled
CA978946A (en) .alpha.-ARYL-4-SUBSTITUTED PIPERIDINOALKANOL DERIVATIVES
CA971684A (en) Radiation position detectors
CA949219A (en) Data change detector
CA952617A (en) Sonde acoustique
CA955822A (en) Collapsible protective structure
CA979101A (en) Pulse detector
CA972038A (en) Fail-safe level detector
CA901941A (en) Geochemical exploration
CA891480A (en) Thinner recovery
CA909782A (en) Mark-forming record materials
CA894836A (en) Cyclopropane derivatives
CA916168A (en) Cyclopropane derivatives
CA909796A (en) Cyclopropane derivatives
CA900059A (en) Detector assembly
CA954630A (en) Data change detector
CA907176A (en) Fail-safe voltage detector
CA916777A (en) Recording by particle orientation
CA908722A (en) Recording by particle orientation
CA903165A (en) Data-recording systems