US3807659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser protection mechanism
Assignee: United States Department of the Army
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Filing: 1972-06-16
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Granted: 1974-04-30
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Expires: 1992-06-16
Abstract
Abstract A mechanism for use with a missile director sight to protect an operator''s eye from feedback effects of laser energy at the time of missile firing. The mechanism includes means for causing a shutter blade to periodically obscure the visual optical path. The use of this mechanism provides a smooth running shutter with a minimum of flicker and light loss.
Inventors
- 👤 R Winfrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:11
CPC Classifications
A; A61; A61F; A61F9/00; F; F41; F41G; F41G11/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
74 words
A laser protection mechanism for use in a missile system comprising: a missile director having a source of energy for control of said missile, said source being provided with an aperture to provide a path for linking said energy with said missile; means for eliminating feedback of said energy into an operator''s eye during missile firing, and mechanism for moving said means past said aperture at a speed which provides optimum obscuration repetition rate.
Claim 2
Dependent Claim
74 words
A laser protection mechanism for use in a missile system comprising: a missile director having a source of energy for control of said missile, said source being provided with an aperture to provide a path for linking said energy with said missile; means for eliminating feedback of said energy into an operator''s eye during missile firing, and mechanism for moving said means past said aperture at a speed which provides optimum obscuration repetition rate.
Claim 3
Dependent Claim
47 words
The mechanism as set forth in claim 1 wherein said means for eliminating feedback includes a shutter blade to cover said aperture and obscure said linking path for a specified length of time and a planetary gear train connection between said shutter blade and said moving mechanism.
Claim 4
Dependent Claim
50 words
The mechanism as set forth in claim 2 wherein said moving mechanism comprises: a drive motor, said planetary gear train and transfer gears connected between said drive motor to said planetary gear train whereby by proper selection of gear ratio produces a shutter speed with a near minimum of flicker.
Claim 5
Dependent Claim
17 words
The mechanism as set forth in claim 3 wherein said source of energy produces a laser beam.
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) | 1977-04-29 | 1977-10-29 | 1978-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-29 | 1981-10-29 | 1982-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-29 | 1985-10-29 | 1986-04-30 | $7700.00 | Window Closed / Lapsed |