CA2030389A1 - Face shield filter plate retention - Google Patents

Face shield filter plate retention

Info

Publication number
CA2030389A1
CA2030389A1 CA 2030389 CA2030389A CA2030389A1 CA 2030389 A1 CA2030389 A1 CA 2030389A1 CA 2030389 CA2030389 CA 2030389 CA 2030389 A CA2030389 A CA 2030389A CA 2030389 A1 CA2030389 A1 CA 2030389A1
Authority
CA
Canada
Prior art keywords
filter plate
face shield
plate retention
shield filter
face
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.)
Granted
Application number
CA 2030389
Other languages
French (fr)
Other versions
CA2030389C (en
Inventor
Burton L. Siegal
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.)
Sellstrom Manufacturing Co
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 CA2030389A1 publication Critical patent/CA2030389A1/en
Application granted granted Critical
Publication of CA2030389C publication Critical patent/CA2030389C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Filtering Of Dispersed Particles In Gases (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

In face-protecting devices such as welder's shields and helmets, a filter plate is supported on a support ledge surrounding the view port and is retained on the exterior of the device by a filter plate retainer provided with fastening means for attachment to the device.
CA 2030389 1989-12-15 1990-11-20 Face shield filter plate retention Expired - Fee Related CA2030389C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US45142389A 1989-12-15 1989-12-15
US451,423 1989-12-15

Publications (2)

Publication Number Publication Date
CA2030389A1 true CA2030389A1 (en) 1991-06-16
CA2030389C CA2030389C (en) 1995-07-11

Family

ID=23792139

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2030389 Expired - Fee Related CA2030389C (en) 1989-12-15 1990-11-20 Face shield filter plate retention

Country Status (1)

Country Link
CA (1) CA2030389C (en)

Also Published As

Publication number Publication date
CA2030389C (en) 1995-07-11

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed