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GB2166831B - Infra-red guard - Google Patents

Infra-red guard

Info

Publication number
GB2166831B
GB2166831B GB08526493A GB8526493A GB2166831B GB 2166831 B GB2166831 B GB 2166831B GB 08526493 A GB08526493 A GB 08526493A GB 8526493 A GB8526493 A GB 8526493A GB 2166831 B GB2166831 B GB 2166831B
Authority
GB
United Kingdom
Prior art keywords
infra
guard
red
red guard
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
GB08526493A
Other versions
GB8526493D0 (en
GB2166831A (en
Inventor
Christopher Higgins
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.)
L C AUTOMATION Ltd
Original Assignee
L C AUTOMATION Ltd
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
Priority claimed from GB848428018A external-priority patent/GB8428018D0/en
Application filed by L C AUTOMATION Ltd filed Critical L C AUTOMATION Ltd
Priority to GB08526493A priority Critical patent/GB2166831B/en
Publication of GB8526493D0 publication Critical patent/GB8526493D0/en
Publication of GB2166831A publication Critical patent/GB2166831A/en
Application granted granted Critical
Publication of GB2166831B publication Critical patent/GB2166831B/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • F16P3/12—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine
    • F16P3/14—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact
    • F16P3/144—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact using light grids

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Burglar Alarm Systems (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
GB08526493A 1984-11-06 1985-10-28 Infra-red guard Expired GB2166831B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08526493A GB2166831B (en) 1984-11-06 1985-10-28 Infra-red guard

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB848428018A GB8428018D0 (en) 1984-11-06 1984-11-06 Infra-red guard
GB08526493A GB2166831B (en) 1984-11-06 1985-10-28 Infra-red guard

Publications (3)

Publication Number Publication Date
GB8526493D0 GB8526493D0 (en) 1985-12-04
GB2166831A GB2166831A (en) 1986-05-14
GB2166831B true GB2166831B (en) 1988-08-03

Family

ID=26288424

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08526493A Expired GB2166831B (en) 1984-11-06 1985-10-28 Infra-red guard

Country Status (1)

Country Link
GB (1) GB2166831B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8521813D0 (en) * 1985-09-03 1985-10-09 Coal Industry Patents Ltd Detection & protection systems
US4820050A (en) * 1987-04-28 1989-04-11 Wells-Gardner Electronics Corporation Solid-state optical position determining apparatus
GB8716108D0 (en) * 1987-07-08 1987-08-12 Truro School Safety system for machinery
GB2207999B (en) * 1987-08-13 1992-04-22 Memco Med Ltd Safety systems
US5220409A (en) * 1988-12-19 1993-06-15 Amp Incorporated Light beam detection utilizing hologram
US4986662A (en) * 1988-12-19 1991-01-22 Amp Incorporated Touch entry using discrete reflectors
DE3923788C1 (en) * 1989-07-18 1991-01-10 Erwin Sick Gmbh Optik-Elektronik, 8000 Muenchen, De
GB9113556D0 (en) * 1991-06-21 1991-08-14 Memco Med Ltd Laser light transmitter and proximity detector
GB2268263A (en) * 1992-06-30 1994-01-05 Ibm Input device for a visual display unit
GB2272215A (en) * 1992-09-08 1994-05-11 Emhart Glass Mach Invest Safety device
US6927916B2 (en) 2001-09-21 2005-08-09 Anoto Ab Illumination and imaging of an object
SE520806C2 (en) * 2001-09-21 2003-08-26 Anoto Ab Optical system, and component thereof, and an optical pen

Also Published As

Publication number Publication date
GB8526493D0 (en) 1985-12-04
GB2166831A (en) 1986-05-14

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19971028