AU7790594A - Proximity detectors - Google Patents

Proximity detectors

Info

Publication number
AU7790594A
AU7790594A AU77905/94A AU7790594A AU7790594A AU 7790594 A AU7790594 A AU 7790594A AU 77905/94 A AU77905/94 A AU 77905/94A AU 7790594 A AU7790594 A AU 7790594A AU 7790594 A AU7790594 A AU 7790594A
Authority
AU
Australia
Prior art keywords
proximity detectors
detectors
proximity
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.)
Abandoned
Application number
AU77905/94A
Inventor
Peter Frederick Bradbeer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of AU7790594A publication Critical patent/AU7790594A/en
Abandoned 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

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Measurement Of Optical Distance (AREA)
AU77905/94A 1993-10-07 1994-10-07 Proximity detectors Abandoned AU7790594A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB939320637A GB9320637D0 (en) 1993-10-07 1993-10-07 Proximity detectors
GB9320637 1993-10-07
PCT/GB1994/002188 WO1995010057A1 (en) 1993-10-07 1994-10-07 Proximity detectors

Publications (1)

Publication Number Publication Date
AU7790594A true AU7790594A (en) 1995-05-01

Family

ID=10743129

Family Applications (1)

Application Number Title Priority Date Filing Date
AU77905/94A Abandoned AU7790594A (en) 1993-10-07 1994-10-07 Proximity detectors

Country Status (4)

Country Link
EP (1) EP0760105A1 (en)
AU (1) AU7790594A (en)
GB (2) GB9320637D0 (en)
WO (1) WO1995010057A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8225458B1 (en) 2001-07-13 2012-07-24 Hoffberg Steven M Intelligent door restraint
US20050207616A1 (en) * 2004-03-17 2005-09-22 The Chamberlain Group, Inc. Movable barrier operator with an obstacle detector
GB2438422B (en) * 2006-05-22 2009-09-23 Memco Ltd Obstacle-detecting apparatus for a powered door system
DE102010012712A1 (en) * 2010-03-25 2011-09-29 Osram Opto Semiconductors Gmbh Light-emitting semiconductor device
EP2610647B1 (en) * 2011-12-27 2015-07-29 Sick AG Optoelectronic sensor
US11066276B2 (en) 2018-04-30 2021-07-20 Otis Elevator Company Enhanced door detection

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4339660A (en) * 1980-05-15 1982-07-13 Erwin Sick Gmbh Optik-Elektronik Reflection light barrier apparatus for recognizing both strongly and weakly reflecting objects
JPS59193382A (en) * 1983-04-18 1984-11-01 Sogo Keibi Hoshiyou Kk Detecting apparatus for invader
DE3539131A1 (en) * 1985-11-05 1987-05-14 Bosch Gmbh Robert DC GENERATOR
GB8619727D0 (en) * 1986-08-13 1986-09-24 Electrosense Ltd Proximity detectors
US5032716A (en) * 1989-09-11 1991-07-16 Frank Lam Motion triggered device/triggered message delivery system
US5012086A (en) * 1989-10-04 1991-04-30 Barnard Timothy J Optoelectronic pickup for stringed instruments

Also Published As

Publication number Publication date
GB9607368D0 (en) 1996-07-03
WO1995010057A1 (en) 1995-04-13
GB9320637D0 (en) 1993-11-24
EP0760105A1 (en) 1997-03-05
GB2298483A (en) 1996-09-04

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