GB2200224A - Fire or heat-protective light transmitting mask having a tin oxide layer - Google Patents

Fire or heat-protective light transmitting mask having a tin oxide layer Download PDF

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Publication number
GB2200224A
GB2200224A GB08700874A GB8700874A GB2200224A GB 2200224 A GB2200224 A GB 2200224A GB 08700874 A GB08700874 A GB 08700874A GB 8700874 A GB8700874 A GB 8700874A GB 2200224 A GB2200224 A GB 2200224A
Authority
GB
United Kingdom
Prior art keywords
tin oxide
fire
heat
layer
mask
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.)
Withdrawn
Application number
GB08700874A
Other versions
GB8700874D0 (en
Inventor
William Nevil Heaton Johnson
Noel Robertson Mckenzie
R P Halson
P Fysh
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.)
BP Oil Ltd
Original Assignee
BP Oil 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
Application filed by BP Oil Ltd filed Critical BP Oil Ltd
Priority to GB08700874A priority Critical patent/GB2200224A/en
Publication of GB8700874D0 publication Critical patent/GB8700874D0/en
Publication of GB2200224A publication Critical patent/GB2200224A/en
Withdrawn legal-status Critical Current

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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
    • A61F9/02—Goggles
    • A61F9/022—Use of special optical filters, e.g. multiple layers, filters for protection against laser light or light from nuclear explosions, screens with different filter properties on different parts of the screen; Rotating slit-discs

Landscapes

  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Physics & Mathematics (AREA)
  • Vascular Medicine (AREA)
  • Optics & Photonics (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physical Vapour Deposition (AREA)
  • Laminated Bodies (AREA)

Abstract

A fire or heat protective light transmitting hood may be of heat resisting transparent plastics film having a first layer of tin oxide applied directly to the film, a part light-transmitting, part light-reflecting coating of metal e.g. silver applied to the tin oxide layer by the metal sputtering technique and a further layer of tin oxide applied to the silver layer.

Description

DESCRIPTION OF INVENTION Title: "Fire or heat-protective mask" THIS INVENTION relates to a fire or heat-protective, light-transmitting mask or hood and it is an object of the invention to provide an improved mask or hood of this kind.
Our co-pending Patent Application No. 8623936 discloses a fire and heat-protective, light-transmitting mask in the form of a bag of heatresisting transparent plastics film rendered part light-transmitting/part light-reflecting by the application of a metallic coating applied by the metallic sputtering technique.
Whilst that hood has proved effective, it has been discovered that the effectiveness of such a protective hood can be substantially improved by adopting the measures of the present invention.
Accordingly, the present invention provides a fire or heat-protective, light-transmitting mask or hood, incorporating a transparent material provided with at least one part light-transmissive, part reflective metallic coating and at least one coating of tin oxide.
A particularly effective embodiment of the invention has been found to result if a first layer of tin oxide is applied directly to the transparent material, a coating of silver is then applied to the tin oxide layer by the metal sputtering technique and a further layer of tin oxide is applied to the silver layer, the silver layer being so applied, by said sputtering technique, that, in a manner known per se, the layer is part light-transmissive and part light-reflective.
It will be appreciated that other combinations of tin oxide/sputtered metallic layers and/or additional tin oxide/sputtered metallic layers may be applied within the scope of the invention.
It will be appreciated that the transparent base layer need not be of flexible plastics film but may be, for example, of rigid plastics, glass or other transparent ceramic or crystalline material.

Claims (6)

CLAliMS
1. A fire or heat-protective light-transmitting mask or hood, incorporating a transparent material provided with at least one part light transmissive, part reflective metallic coating and at least one coating of tin oxide.
2. A mask or hood according to claim 1 wherein said metallic coating has been applied by the metallic sputtering technique.
3. A mask or hood according to claim 1 or claim 2 including a first layer of tin oxide applied directly to said transparent material, said metallic coating being applied to the tin oxide layer, and a further tin oxide layer applied to said metallic coating.
4. A mask or hood according to any preceding claim wherein the metal applied by said sputtering technique is silver.
5. A fire or heat-protective light transmitting hood, substantially as herein described.
6. Any novel feature or combination of features described herein.
GB08700874A 1987-01-15 1987-01-15 Fire or heat-protective light transmitting mask having a tin oxide layer Withdrawn GB2200224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08700874A GB2200224A (en) 1987-01-15 1987-01-15 Fire or heat-protective light transmitting mask having a tin oxide layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08700874A GB2200224A (en) 1987-01-15 1987-01-15 Fire or heat-protective light transmitting mask having a tin oxide layer

Publications (2)

Publication Number Publication Date
GB8700874D0 GB8700874D0 (en) 1987-02-18
GB2200224A true GB2200224A (en) 1988-07-27

Family

ID=10610724

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08700874A Withdrawn GB2200224A (en) 1987-01-15 1987-01-15 Fire or heat-protective light transmitting mask having a tin oxide layer

Country Status (1)

Country Link
GB (1) GB2200224A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5113527A (en) * 1989-05-23 1992-05-19 Noel Robertson-Mckenzie Fire and smoke protective hood

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB433083A (en) * 1934-05-17 1935-08-08 Guy Pascoe Crowden Improvements in face masks
GB524313A (en) * 1939-01-26 1940-08-02 John Hamilton Paterson Improvements in or relating to welding screens, vizors, goggles or the like
GB1152691A (en) * 1965-03-23 1969-05-21 Glaverbel Glass and Other Light-Transmitting Materials
GB2126256A (en) * 1982-08-17 1984-03-21 Toyoda Chuo Kenkyusho Kk Heatwave shield coating
US4497700A (en) * 1983-03-25 1985-02-05 Flachglas Aktiengesellschaft Method of coating a transparent substrate
EP0123662B1 (en) * 1983-03-24 1987-06-03 Per-Olof Holmström Welding shield

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB433083A (en) * 1934-05-17 1935-08-08 Guy Pascoe Crowden Improvements in face masks
GB524313A (en) * 1939-01-26 1940-08-02 John Hamilton Paterson Improvements in or relating to welding screens, vizors, goggles or the like
GB1152691A (en) * 1965-03-23 1969-05-21 Glaverbel Glass and Other Light-Transmitting Materials
GB2126256A (en) * 1982-08-17 1984-03-21 Toyoda Chuo Kenkyusho Kk Heatwave shield coating
EP0123662B1 (en) * 1983-03-24 1987-06-03 Per-Olof Holmström Welding shield
US4497700A (en) * 1983-03-25 1985-02-05 Flachglas Aktiengesellschaft Method of coating a transparent substrate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5113527A (en) * 1989-05-23 1992-05-19 Noel Robertson-Mckenzie Fire and smoke protective hood

Also Published As

Publication number Publication date
GB8700874D0 (en) 1987-02-18

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)