CA2030389A1 - Face shield filter plate retention - Google Patents
Face shield filter plate retentionInfo
- 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
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.
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) |
-
1990
- 1990-11-20 CA CA 2030389 patent/CA2030389C/en not_active Expired - Fee Related
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 |