US3775774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens holding structure for welder{40 s helmet
Assignee: Individual
•
Filing: 1972-07-20
•
Granted: 1973-12-04
•
Expires: 1992-07-20
Abstract
Abstract An improvement in the lens holding structure of a welder''s helmet consisting of spring means to normally position a lens to overlie the lens opening of the helmet and means operable by the jaw of the operator to move said lens away from said lens opening.
Inventors
- 👤 E Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:27
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/04; A61F9/06; A61F9/061
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
179 words
An improved lens holding structure for a welder''s helmet having a headband and a hood portion supported thereby and having a lens opening therein having in combination, a lens, lens supporting means carried by said hood portion for guiding said lens from an operative position over said lens opening to a lower unoperative position away from said lens opening, yielding means in connection with said supporting means and with said lens for normally holding said lens in position to overlie said lens opening, jaw operable means in connection with said lens moving the same away from said lens opening, said lens supporting means comprising a frame member, and said frame member having an open bottom, a boss projecting outwardly of said frame member, a plate member hinged to said boss swingable to overlie the open bottom in said frame member and to swing outwardly thereof to permit removal of said Lens, and a stop member carried by said frame member to be engaged by said plate member when said plate member overlies said open bottom in said frame member.
Claim 2
Dependent Claim
179 words
An improved lens holding structure for a welder''s helmet having a headband and a hood portion supported thereby and having a lens opening therein having in combination, a lens, lens supporting means carried by said hood portion for guiding said lens from an operative position over said lens opening to a lower unoperative position away from said lens opening, yielding means in connection with said supporting means and with said lens for normally holding said lens in position to overlie said lens opening, jaw operable means in connection with said lens moving the same away from said lens opening, said lens supporting means comprising a frame member, and said frame member having an open bottom, a boss projecting outwardly of said frame member, a plate member hinged to said boss swingable to overlie the open bottom in said frame member and to swing outwardly thereof to permit removal of said Lens, and a stop member carried by said frame member to be engaged by said plate member when said plate member overlies said open bottom in said frame member.
Claim 3
Dependent Claim
46 words
The structure set forth in claim 1, wherein said frame member comprises channels holding said lens, a threaded boss carried by said frame member, and a thumb screw threaded through said boss engaging said lens to hold the same in position away from said lens opening.
References Cited (Backward Citations)
US1893617A
Cited
US1800623A
Cited
US1990369A
Cited
US2055117A
Cited
US2384798A
Cited
US2370499A
Cited
US2400993A
Cited
US3086213A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |