CA1074102A - Device for measuring the width of timber - Google Patents

Device for measuring the width of timber

Info

Publication number
CA1074102A
CA1074102A CA272,130A CA272130A CA1074102A CA 1074102 A CA1074102 A CA 1074102A CA 272130 A CA272130 A CA 272130A CA 1074102 A CA1074102 A CA 1074102A
Authority
CA
Canada
Prior art keywords
board
mirror
laser beam
width
reflector
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
CA272,130A
Other languages
English (en)
French (fr)
Inventor
Heikki Merilainen
Ulf J. G. Strom
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.)
Ahlstrom Corp
Original Assignee
Ahlstrom Corp
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 Ahlstrom Corp filed Critical Ahlstrom Corp
Application granted granted Critical
Publication of CA1074102A publication Critical patent/CA1074102A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/04—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
    • G01B11/046—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring width

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
CA272,130A 1976-02-20 1977-02-18 Device for measuring the width of timber Expired CA1074102A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI760438A FI53358C (fi) 1976-02-20 1976-02-20 Anordning foer maetning av bredden av traevirke

Publications (1)

Publication Number Publication Date
CA1074102A true CA1074102A (en) 1980-03-25

Family

ID=8509767

Family Applications (1)

Application Number Title Priority Date Filing Date
CA272,130A Expired CA1074102A (en) 1976-02-20 1977-02-18 Device for measuring the width of timber

Country Status (4)

Country Link
US (1) US4123169A (forum.php)
CA (1) CA1074102A (forum.php)
FI (1) FI53358C (forum.php)
SE (1) SE7701825L (forum.php)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5056922A (en) * 1988-02-26 1991-10-15 Canadian Patents And Development Limited/Societe Canadienne Des Brevets Et D'exploitation Limitee Method and apparatus for monitoring the surface profile of a moving workpiece

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE412286B (sv) * 1978-07-10 1980-02-25 Saab Scania Ab Sett och anordning for fotoelektrisk avmetning av breder eller liknande geometriskt obestemda foremal
DE3317342A1 (de) * 1983-05-11 1984-11-15 Maschinenfabrik Esterer AG, 8262 Altötting Verfahren zum vermessen der kanten eines holzes im laengstransport und vorrichtung hierfuer
DE3840726A1 (de) * 1988-12-02 1990-06-07 Karl F Zimmer Kg Messverfahren und messeinrichtung zur durchmesser-bestimmung eines dreidimensionalen objektes
US5220177A (en) * 1991-06-24 1993-06-15 Harris Instrument Corporation Method and apparatus for edge detection and location
US5347135A (en) * 1991-06-24 1994-09-13 Harris Instrument Corporation Method and apparatus employing a linear array IR region radiation devices for locating the position of conveyor transported products
US5546808A (en) * 1994-09-06 1996-08-20 Harris Instrument Corporation Apparatus and method for binocular measurement system
US5960104A (en) * 1996-08-16 1999-09-28 Virginia Polytechnic & State University Defect detection system for lumber
US5867274A (en) * 1997-02-14 1999-02-02 Harris Instrument Corporation System for the measurement of the cut length of moving articles
FI114743B (fi) * 1999-09-28 2004-12-15 Ekspansio Engineering Ltd Oy Telesentrisellä periaatteella toimiva laitteisto ja menetelmä

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2674917A (en) * 1951-03-06 1954-04-13 Gen Electric Noncontacting width gauge
SE326569B (forum.php) * 1966-08-12 1970-07-27 Asea Ab
US3513321A (en) * 1967-08-03 1970-05-19 Weyerhaeuser Co Log tally system with minimum diameter measuring means
US3698818A (en) * 1971-04-27 1972-10-17 Black Clawson Co Log diameter scanner including a plurality of photodetectors
SE377610B (forum.php) * 1973-02-23 1975-07-14 Saab Scania Ab

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5056922A (en) * 1988-02-26 1991-10-15 Canadian Patents And Development Limited/Societe Canadienne Des Brevets Et D'exploitation Limitee Method and apparatus for monitoring the surface profile of a moving workpiece

Also Published As

Publication number Publication date
FI760438A7 (forum.php) 1977-08-21
SE7701825L (sv) 1977-08-21
FI53358C (fi) 1978-04-10
FI53358B (forum.php) 1977-12-30
US4123169A (en) 1978-10-31

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Legal Events

Date Code Title Description
MKEX Expiry