US4822994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Small arms sight for use during daylight and nighttime conditions
Assignee: ITT ELECTRO OPTICAL PRODUCTS A DIVISION OF ITT Corp
•
Filing: 1987-09-23
•
Granted: 1989-04-18
•
Expires: 2007-09-23
Abstract
Abstract There is disclosed a small arms sight assembly which enables a firearm such as a revolver or rifle to be employed for both nighttime and daytime use. The gun sight assembly includes a typical telescopic sight assembly of a conventional design which sight assembly includes an image intensifier module which can be selectively removed from the telescopic sight. The intensifier module or assembly when employed in conjunction with the remaining sight components enables the user to operate the weapon under low light conditions. During daytime operation the intensifier module housing section is removed. In this manner there is described a sight which enables a small weapon to be employed for daytime or nighttime use while providing increased effective weapon range when compared to conventional sight devices.
Inventors
- 👤 Charles B. Johnson
- 👤 Francis J. Augustine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:52
CPC Classifications
F; F41; F41G; F41G1/00; F41G1/38; G; G02; G02B; G02B23/00; G02B23/12; G02B23/14
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
251 words
A sight apparatus for sue in conjunction with firearms to enable a user of the firearm to operate the same during daylight as well a low light or nighttime conditions, comprising: a first housing section having a first end and a second end, a port for receiving light located at said first end and first coupling means located at said second end; a second housing section having a third end and a fourth end, second coupling means located at said third end and a port located at said forth end for viewing received light via the eye of a user; a lens assembly positioned in at least one of said first and said second housing section for increasing the visual angle when viewing said received light during daytime conditions; and an image intensifier module housing having an internal hollow for accommodating an image intensifier means to enable said user to view images at said increased visual angle during nighttime operation, said image intensifier module having two opposed ends, first coacting coupling means located at one of said opposed ends and second coacting coupling means located at the other of said opposed ends, wherein in a first arrangement said first coupling means is selectively coupled directly to said second coupling means for operation in daylight conditions and in a second arrangement said first coupling means is selectively coupled to said first coacting coupling means and said second coacting coupling means is coupled to said second coupling means for operation in nighttime conditions.
Claim 2
Dependent Claim
251 words
A sight apparatus for sue in conjunction with firearms to enable a user of the firearm to operate the same during daylight as well a low light or nighttime conditions, comprising: a first housing section having a first end and a second end, a port for receiving light located at said first end and first coupling means located at said second end; a second housing section having a third end and a fourth end, second coupling means located at said third end and a port located at said forth end for viewing received light via the eye of a user; a lens assembly positioned in at least one of said first and said second housing section for increasing the visual angle when viewing said received light during daytime conditions; and an image intensifier module housing having an internal hollow for accommodating an image intensifier means to enable said user to view images at said increased visual angle during nighttime operation, said image intensifier module having two opposed ends, first coacting coupling means located at one of said opposed ends and second coacting coupling means located at the other of said opposed ends, wherein in a first arrangement said first coupling means is selectively coupled directly to said second coupling means for operation in daylight conditions and in a second arrangement said first coupling means is selectively coupled to said first coacting coupling means and said second coacting coupling means is coupled to said second coupling means for operation in nighttime conditions.
Claim 3
Dependent Claim
27 words
The sight apparatus according to claim 1, wherein said first housing section includes an ocular lens assembly and said second housing section includes an objective lens assembly.
Claim 4
Dependent Claim
18 words
The sight apparatus according to claim 2, wherein said first housing section includes an adjustable zoom lens assembly.
Claim 5
Dependent Claim
25 words
The sight apparatus according to claim 1, further including a windage and elevation control means coupled to one of said first and second housing sections.
Claim 6
Dependent Claim
33 words
The sight apparatus according to claim 1, further including a battery coupled to one of said first and second sections and operative to apply a high voltage potential to said image intensifier means.
Claim 7
Dependent Claim
26 words
The sight apparatus according to claim 1, wherein said image intensifier means includes a high voltage source for applying operating potential to an image intensifier tube.
Claim 8
Dependent Claim
27 words
The sight apparatus according to claim 1, further including bracket means coupled to said first section to enable said sight apparatus to be secured to said firearm.
Claim 9
Dependent Claim
20 words
The sight apparatus according to claim 1, including means located on said intensifier module housing for varying the intensification gain.
Claim 10
Dependent Claim
68 words
The sight apparatus according to claim 1, wherein said first and second coupling means includes a first flange located at said other end of said first section and a congruent flange located at said other end of said second section to enable said first and second sections to be attached in a first mode and detached in a second mode wherein said intensifier module may be coupled therebetween.
Claim 11
Dependent Claim
23 words
The sight apparatus according to claim 1, wherein said firearm is a small type firearm of the type capable of being hand held.
Claim 12
Dependent Claim
19 words
The sight apparatus according to claim 1, wherein said image intensifier means includes a micro channel plate image intensifier.
Claim 13
Dependent Claim
23 words
The sight apparatus according to claim 1, further including focusing means coupled to said housing and operative to focus said telescopic lens assembly.
References Cited (Backward Citations)
US2946255A
Cited
US3392450A
Cited
US3971933A
Cited
US4241252A
Cited
US4255013A
Cited
US4341022A
Cited
US4440476A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-17 | 1992-10-17 | 1993-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-17 | 1996-10-17 | 1997-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-17 | 2000-10-17 | 2001-04-18 | $7700.00 | Window Closed / Lapsed |