US3721994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual visor headgear
Assignee: United States Department of the Navy
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Filing: 1971-03-29
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Granted: 1973-03-27
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Expires: 1991-03-29
Abstract
Abstract A safety headgear open at the face including an outer tinted visor and an inner clear visor retained between arced tracks on either side of the face opening. In the stowed position both visors are retracted behind a visor canopy across the forehead section of the headgear. Both visors are extensible across the eye area of the face opening by a combination of a locking knob attached to the outer visor extending through an opening in the canopy and lugs formed on the upper edge of the outer visor to engage the upper edge of the inner visor. The position of the outer visor is determined by the position of the knob in the opening and the inner visor is retained simply in position by friction pads.
Inventors
- 👤 Simone D De
- 👤 F Catroppa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:46
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/18; A42B3/22; A42B3/228; A42B3/226
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
207 words
A protective headgear comprising, in combination: a helmet; two arcuate track assemblies each respectively attached adjacent the sides of the face opening on the outside of said helmet, the convex sides thereof oriented forwardly towards the face opening; an inner clear visor and an outer tinted visor the respective distal ends thereof slidably engaging corresponding track of said track assemblies, each visor forming a generally spherical section the radial dimensions thereof being respectively defined by the dimensions of the helmet for the inner visor and by the inner visor clearance dimensions for the outer visor; engagement means formed on the outer visor for engaging the inner visor on the downward movement of the outer visor; a visor canopy arced over the forehead section of said helmet attached at the distal ends thereof to the outer surfaces of said track assemblies forming an enclosure above the face opening of said helmet to contain the respective visors; friction means interposed between said helmet and said inner visor for providing a restraint on the motion of said inner visor; and locking means attached at one end to said outer visor the other end thereof engaging said canopy for providing a manually fixed connection between said canopy and said outer visor.
Claim 2
Dependent Claim
207 words
A protective headgear comprising, in combination: a helmet; two arcuate track assemblies each respectively attached adjacent the sides of the face opening on the outside of said helmet, the convex sides thereof oriented forwardly towards the face opening; an inner clear visor and an outer tinted visor the respective distal ends thereof slidably engaging corresponding track of said track assemblies, each visor forming a generally spherical section the radial dimensions thereof being respectively defined by the dimensions of the helmet for the inner visor and by the inner visor clearance dimensions for the outer visor; engagement means formed on the outer visor for engaging the inner visor on the downward movement of the outer visor; a visor canopy arced over the forehead section of said helmet attached at the distal ends thereof to the outer surfaces of said track assemblies forming an enclosure above the face opening of said helmet to contain the respective visors; friction means interposed between said helmet and said inner visor for providing a restraint on the motion of said inner visor; and locking means attached at one end to said outer visor the other end thereof engaging said canopy for providing a manually fixed connection between said canopy and said outer visor.
Claim 3
Dependent Claim
34 words
A protective headgear according to claim 1, further comprising: said engagement means including lugs formed on the upper edge of said outer visor extending inwardly to engage the upper edge of said inner visor.
Claim 4
Dependent Claim
67 words
A protective headgear according to claim 2 further comprising: said locking means including an arcuate opening in said canopy, a threaded shaft attached at one end thereof to said outer visor extending through said opening a manual locking knob threadably engaging the other end of said shaft on the outside of said canopy and a washer interspaced between said outer visor and said canopy on said shaft.
Claim 5
Dependent Claim
50 words
A protective headgear according to claim 3, further comprising: said friction means including a foam rubber pad attached at the one side thereof to the outside of said helmet proximate the upper edge of the face opening thereof, the other side of said pad being compressed by said inner visor.
Claim 6
Dependent Claim
87 words
Eye protection apparatus comprising: support means; inner and outer visors each mounted on said support means and each movable between a first position in front of the eyes and a second position above the eyes; and engagement means operatively connected between said inner and outer visors for limiting the independent movement of said inner visor toward the second position until it coincides with said outer visor, and for limiting the independent movement of said outer visor toward the first position until it coincides with said inner visor.
Claim 7
Dependent Claim
87 words
Eye protection apparatus comprising: support means; inner and outer visors each mounted on said support means and each movable between a first position in front of the eyes and a second position above the eyes; and engagement means operatively connected between said inner and outer visors for limiting the independent movement of said inner visor toward the second position until it coincides with said outer visor, and for limiting the independent movement of said outer visor toward the first position until it coincides with said inner visor.
Claim 8
Dependent Claim
27 words
Eye protection apparatus according to claim 5, further comprising: friction means operatively connected between said support means and said inner visor for restraining the free motion thereof.
Claim 9
Dependent Claim
32 words
Eye protection apparatus according to claim 6, further comprising: locking means operatively connected between said support means and said outer visor for selectively affixing the outer visor in a fixed orientation therewith.
Claim 10
Dependent Claim
66 words
Eye protection apparatus according to claim 7, further comprising: said inner and outer visor forming generally spherical sections pivotally mounted by the distal ends thereof on said support means, the dimensions of the inner visor being defined by the pivotal arc thereof over the forehead of the wearer and the dimensions of the outer visor being defined by the pivotal arc thereof over the inner visor.
Claim 11
Dependent Claim
34 words
Eye protection apparatus according to claim 8, further comprising: said engagement means including lugs formed on the uppeR edge of said outer visor extending inwardly to engage the upper edge of said inner visor.
References Cited (Backward Citations)
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |