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WO2002038095A3 - A welding operation liquid crystal protection mask - Google Patents

A welding operation liquid crystal protection mask Download PDF

Info

Publication number
WO2002038095A3
WO2002038095A3 PCT/US2001/046495 US0146495W WO0238095A3 WO 2002038095 A3 WO2002038095 A3 WO 2002038095A3 US 0146495 W US0146495 W US 0146495W WO 0238095 A3 WO0238095 A3 WO 0238095A3
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
protection mask
detecting means
welding operation
main body
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.)
Ceased
Application number
PCT/US2001/046495
Other languages
French (fr)
Other versions
WO2002038095A2 (en
Inventor
Kiyoshi Miyashita
Shunsuke Suyama
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.)
3M Innovative Properties Co
Original Assignee
3M Innovative Properties Co
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 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Priority to EP01989925A priority Critical patent/EP1331909A2/en
Priority to BR0115233-5A priority patent/BR0115233A/en
Priority to CA002425249A priority patent/CA2425249A1/en
Priority to AU2002228808A priority patent/AU2002228808A1/en
Priority to US10/381,564 priority patent/US6934967B2/en
Publication of WO2002038095A2 publication Critical patent/WO2002038095A2/en
Publication of WO2002038095A3 publication Critical patent/WO2002038095A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/04—Eye-masks ; Devices to be worn on the face, not intended for looking through; Eye-pads for sunbathing
    • A61F9/06—Masks, shields or hoods for welders
    • A61F9/065—Masks, shields or hoods for welders use of particular optical filters
    • A61F9/067—Masks, shields or hoods for welders use of particular optical filters with variable transmission

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Liquid Crystal (AREA)
  • Polarising Elements (AREA)

Abstract

A welding-operation, liquid crystal, protection mask for protecting the eyes of a human operator from an arc light generated during a welding operation, comprises a liquid crystal protection mask main body (1) adapted to be attached to the face of a human operator; a detecting means (2) disposed in the vicinity of the liquid crystal protection mask main body and capable of detecting an incident arc light generated during the welding operation and thus producing a detection result; a liquid crystal light blocking section (3) that is disposed in a position corresponding to the eyes of a human operator wearing the protection mask with the human face being covered by the protection mask main body (1) and that has a liquid crystal member (7) that is capable of blocking the incident light by instantaneously reducing the light transmittance of the liquid crystal in accordance with the detection result output from the detecting means and by means of a liquid crystal driving power source (6); and a polarizing plate (5) that is provided in front of the detecting means to cover up the detecting means (2) and that is capable of controlling the orientation of the incident light.
PCT/US2001/046495 2000-11-09 2001-11-08 A welding operation liquid crystal protection mask Ceased WO2002038095A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP01989925A EP1331909A2 (en) 2000-11-09 2001-11-08 A welding operation liquid crystal protection mask
BR0115233-5A BR0115233A (en) 2000-11-09 2001-11-08 Liquid Crystal Protective Mask For Welding Operation
CA002425249A CA2425249A1 (en) 2000-11-09 2001-11-08 A welding operation liquid crystal protection mask
AU2002228808A AU2002228808A1 (en) 2000-11-09 2001-11-08 A welding operation liquid crystal protection mask
US10/381,564 US6934967B2 (en) 2000-11-09 2001-11-08 Welding operation liquid crystal protection mask

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000-342324 2000-11-09
JP2000342324A JP2002144044A (en) 2000-11-09 2000-11-09 Liquid crystal protective mask for welding

Publications (2)

Publication Number Publication Date
WO2002038095A2 WO2002038095A2 (en) 2002-05-16
WO2002038095A3 true WO2002038095A3 (en) 2003-01-23

Family

ID=18816906

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/046495 Ceased WO2002038095A2 (en) 2000-11-09 2001-11-08 A welding operation liquid crystal protection mask

Country Status (6)

Country Link
EP (1) EP1331909A2 (en)
JP (1) JP2002144044A (en)
AU (1) AU2002228808A1 (en)
BR (1) BR0115233A (en)
CA (1) CA2425249A1 (en)
WO (1) WO2002038095A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100737240B1 (en) * 2005-12-14 2007-07-09 오토스테크 주식회사 Control method of glare prevention device for welding light detection
JP4883509B2 (en) * 2008-10-16 2012-02-22 株式会社アマダ Safety protection system for laser processing
US8569655B2 (en) * 2009-10-13 2013-10-29 Lincoln Global, Inc. Welding helmet with integral user interface
JP6196530B2 (en) * 2013-11-05 2017-09-13 株式会社ダイヘン Remote control device for power supply and processing system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1430183A (en) * 1972-03-27 1976-03-31 Aga Ab Device for the protection of an operators eyes against intensive radiation
US4155122A (en) * 1975-12-02 1979-05-22 Revue Thommen Ag Light shield for welder's mask
US4560239A (en) * 1984-02-29 1985-12-24 Amnon Katz Liquid crystal active light shield
US4920257A (en) * 1986-10-09 1990-04-24 Rupert Fuerthbauer Light filter with automatic regulationof optical transmission
JPH0354521A (en) * 1989-07-21 1991-03-08 Seiko Sangyo:Kk Liquid crystal filter light shield controller for welding mask
EP0678288A2 (en) * 1994-04-22 1995-10-25 Xelux Holding Ag Device to protect against glare
WO1996010767A1 (en) * 1994-10-04 1996-04-11 Optrel Ag Electrooptical filter cartridge and a method for manufacturing the same
US5510609A (en) * 1993-09-13 1996-04-23 Optrel Ag Electrically controllable optical filter element

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61109430A (en) * 1984-10-31 1986-05-27 三菱電機株式会社 Failure detection device for inverter equipment
US4766023A (en) * 1987-01-16 1988-08-23 Minnesota Mining And Manufacturing Company Method for making a flexible louvered plastic film with protective coatings and film produced thereby
JPH02117585A (en) * 1988-10-21 1990-05-02 Nkk Corp personnel transport equipment
JP2725145B2 (en) * 1994-04-12 1998-03-09 有限会社セイコー産業 Liquid crystal filter shading control device for welding mask without operation power switch

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1430183A (en) * 1972-03-27 1976-03-31 Aga Ab Device for the protection of an operators eyes against intensive radiation
US4155122A (en) * 1975-12-02 1979-05-22 Revue Thommen Ag Light shield for welder's mask
US4560239A (en) * 1984-02-29 1985-12-24 Amnon Katz Liquid crystal active light shield
US4920257A (en) * 1986-10-09 1990-04-24 Rupert Fuerthbauer Light filter with automatic regulationof optical transmission
JPH0354521A (en) * 1989-07-21 1991-03-08 Seiko Sangyo:Kk Liquid crystal filter light shield controller for welding mask
US5510609A (en) * 1993-09-13 1996-04-23 Optrel Ag Electrically controllable optical filter element
EP0678288A2 (en) * 1994-04-22 1995-10-25 Xelux Holding Ag Device to protect against glare
WO1996010767A1 (en) * 1994-10-04 1996-04-11 Optrel Ag Electrooptical filter cartridge and a method for manufacturing the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 015, no. 205 (P - 1206) 27 May 1991 (1991-05-27) *

Also Published As

Publication number Publication date
JP2002144044A (en) 2002-05-21
CA2425249A1 (en) 2002-05-16
BR0115233A (en) 2003-12-30
WO2002038095A2 (en) 2002-05-16
EP1331909A2 (en) 2003-08-06
AU2002228808A1 (en) 2002-05-21

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