US3251065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding helmet
Assignee: Individual
•
Filing: 1964-02-24
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Granted: 1966-05-17
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Expires: 1984-02-24
Abstract
No abstract record available.
Inventors
- 👤 Patrick E Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:28
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/04; A61F9/06; A61F9/061
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
IN A PROTECTIVE HEAD COVERING FOR WELDERS AND THE LIKE, THE COMBINATION COMPRISING A HOOD HAVING A FRONT PIECE, A SAFETY LENS FIXED IN SAID FRONT PIECE, SLIDE TRACK MEANS ON SAID FRONT PIECE, A LENS ASSEMBLY INCLUDING A PAIR OF LENSES SLIDABLY MOUNTED ON SAID TRACK MEANS BETWEEN TWO OPERATIVE POSITIONS, AND MEANS FOR MOVING ONE OF SAID PAIR OF LENSES INDEPENDENTLY OF THE OTHER WHEREBY SAID PAIR OF LENSES ARE EACH DISPOSED IN AN INOPERATIVE POSITION AND SAID SAFETY LENS IS SOLELY OPERATIVE, SAID MEANS FOR MOVING ONE OF SAID PAIR OF LENSES COMPRISES A PIVOTAL CONNECTION FOR PIVOTING THE SAME TO AN INOPERATIVE POSITION.
Claim 2
Dependent Claim
107 words
IN A PROTECTIVE HEAD COVERING FOR WELDERS AND THE LIKE, THE COMBINATION COMPRISING A HOOD HAVING A FRONT PIECE, A SAFETY LENS FIXED IN SAID FRONT PIECE, SLIDE TRACK MEANS ON SAID FRONT PIECE, A LENS ASSEMBLY INCLUDING A PAIR OF LENSES SLIDABLY MOUNTED ON SAID TRACK MEANS BETWEEN TWO OPERATIVE POSITIONS, AND MEANS FOR MOVING ONE OF SAID PAIR OF LENSES INDEPENDENTLY OF THE OTHER WHEREBY SAID PAIR OF LENSES ARE EACH DISPOSED IN AN INOPERATIVE POSITION AND SAID SAFETY LENS IS SOLELY OPERATIVE, SAID MEANS FOR MOVING ONE OF SAID PAIR OF LENSES COMPRISES A PIVOTAL CONNECTION FOR PIVOTING THE SAME TO AN INOPERATIVE POSITION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-16 | 1969-11-15 | 1970-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-16 | 1973-11-15 | 1974-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-16 | 1977-11-15 | 1978-05-17 | $7700.00 | Window Closed / Lapsed |