US3974585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gun sight night lighting attachment
Assignee: Individual
•
Filing: 1974-10-24
•
Granted: 1976-08-17
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Expires: 1994-10-24
Abstract
Abstract This invention relates to gun sight lighting device and more particularly to an attachment that can be affixed to a gun sight to enable the gun and the sight to be used in situations where very little incidental light is present. The attachment consists of a source of light that is attached to a gun sight of the type that operates on the principle of superimposing a sighting image on a target. The light source is directed specifically at illuminating the object that is used to develop the sighting image so that the gun sight can be used in conditions where the level of incidental light present is insufficient to enable the sighting image to be readily seen by the user of the sight, but the level of incidental light is sufficient to permit the target to be seen by the user of the sight.
Inventors
- 👤 Charles W. Dunham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:59
CPC Classifications
F; F41; F41G; F41G1/00; F41G1/32; F41G1/34; F41G1/345
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
112 words
A gun sight lighting attachment for use with a gun sight of the type that operates on the principle of super-imposing an optical sighting image on a target as seen by the sighter comprising an electric battery powered light emitting means, a battery electrically connected to the battery powered light emitting means, a light impermeable casing for housing the light emitting means and the battery, and adapted to be attached to the gun sight, and a means for causing the light emitting from the light emitting means to be directed only on the means that generates the optical sighting image without permitting any extraneous light to reach the eye of the sighter.
Claim 2
Dependent Claim
112 words
A gun sight lighting attachment for use with a gun sight of the type that operates on the principle of super-imposing an optical sighting image on a target as seen by the sighter comprising an electric battery powered light emitting means, a battery electrically connected to the battery powered light emitting means, a light impermeable casing for housing the light emitting means and the battery, and adapted to be attached to the gun sight, and a means for causing the light emitting from the light emitting means to be directed only on the means that generates the optical sighting image without permitting any extraneous light to reach the eye of the sighter.
Claim 3
Dependent Claim
15 words
An attachment according to claim 1 wherein the light emitting means is a light bulb.
Claim 4
Dependent Claim
17 words
An attachment according to claim 1 wherein the light emitting means can be turned on or off.
Claim 5
Dependent Claim
35 words
An attachment according to claim 1 wherein the light emitting means can be turned on and off and means are included to enable the sighter to determine whether the light source is on or off.
Claim 6
Dependent Claim
24 words
An attachment according to claim 1 wherein the light emitting means is a pen light bulb and the battery is a pen light battery.
Claim 7
Dependent Claim
44 words
An attachment according to claim 2 wherein a pin hole device is positioned between the light emitting means and the means for causing the light emitted from the light emitting means to be directed only on the means that generates the optical sighting image.
Claim 8
Dependent Claim
32 words
An attachment according to claim 2 wherein the light bulb can be turned on or off by connecting or disconnecting the path of electrical current between the battery and the light bulb.
Claim 9
Dependent Claim
42 words
An attachment according to claim 2 wherein the light bulb can be turned on or off and a small pin hole type opening is present in the casing to enable the sighter to observe whether the light bulb is on or off.
Claim 10
Dependent Claim
96 words
An attachment according to claim 6 wherein the casing is constructed in two parts fitted together by a female-male thread combination, one part of the casing housing the battery, the light bulb, and a spring which forces the battery against the light bulb, the other part of the casing housing the pin hole device, the end of the casing part housing the pin hole device opposite the threaded end being machined so that it fits snuggly over the end of the gun sight without permitting any light to escape between the part and the gun sight.
Claim 11
Dependent Claim
43 words
An attachment according to claim 2 wherein the light bulb is turned on or off by tightening or loosening the threaded connection between the two parts of the casing thereby closing or breaking the electrical connection between the light bulb and the battery.
References Cited (Backward Citations)
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Cited
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US2158915A
Cited
US2385649A
Cited
US2546242A
Cited
US2529057A
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) | 1979-08-17 | 1980-02-16 | 1980-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-17 | 1984-02-16 | 1984-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-17 | 1988-02-16 | 1988-08-17 | $7700.00 | Window Closed / Lapsed |