Patent US3748658A successfully refreshed from Google Patents.
US3748658A
Expired / Lapsed
US
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Duplex visor
Assignee: Individual
•
Filing: 1971-08-09
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Granted: 1973-07-31
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Expires: 1991-08-09
Abstract
Abstract An improved duplex visor for a helmet, the visor having a transparent clear portion and a transparent light attenuating portion. The visor is adapted to be pivotally moved from a position in the field of vision of the wearer to a position in spaced conformity to the crown of the helmet and further adapted to be easily rotated, whereby either the clear or the attenuating portions can be positioned in the field of vision in order to accommodate a full range of light conditions.
Inventors
- 👤 R Albright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:01
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/18; A42B3/22; A42B3/221; A42B3/222; A42B3/226
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
88 words
In a helmet having a crown and depending side lobes defining a face opening, a duplex visor comprising: a transparent semispherical section having a light attenuating portion and a clear portion, said portions being symmetrical about a circumferential centerline through said semi-spherical section; fastener means secured directly to said semispherical section along said circumferential centerline and equidistant from the midpoint thereof; and fastener means secured to the side lobes of said helmet complementary to said visor fasteners, said helmet fasteners adapted to pivotally connect to said visor fasteners.
Claim 2
Dependent Claim
88 words
In a helmet having a crown and depending side lobes defining a face opening, a duplex visor comprising: a transparent semispherical section having a light attenuating portion and a clear portion, said portions being symmetrical about a circumferential centerline through said semi-spherical section; fastener means secured directly to said semispherical section along said circumferential centerline and equidistant from the midpoint thereof; and fastener means secured to the side lobes of said helmet complementary to said visor fasteners, said helmet fasteners adapted to pivotally connect to said visor fasteners.
Claim 3
Dependent Claim
22 words
A duplex visor in accordance with claim 1, wherein said semispherical section has a radius greater than the radius of said crown.
Claim 4
Dependent Claim
64 words
A duplex visor in accordance with claim 1, further comprising: first fastener means secured to said crown adjacent said face opening; and second fastener means secured to said visor along the circumferential centerline in complementary relationship to said first fastener means, whereby said visor is adapted to be secured to said helmet with one portion of said visor in juxtaposition to said face opening.
Claim 5
Dependent Claim
62 words
A duplex visor in accordance with claim 3, further comprising a fastener means secured to the crown of said helmet above and co-planar to said first fastener means in complementary relationship to said second fastener means whereby said visor is adapted to be secured to said helmet in spaced complementary relationship to the crown of said helmet adjacent to said face opening.
Claim 6
Dependent Claim
29 words
A duplex visor in accordance with claim 1, wherein said fastener means secured to said semispherical section along said circumferential centerline and equidistant from the midpoint are fuctionally identical.
References Cited (Backward Citations)
US2138086A
Cited
US3189918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |