US3641676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radioluminescent gunsight and method
Assignee: SELF-POWERED LIGHTING Inc
•
Filing: 1969-08-07
•
Granted: 1972-02-15
•
Expires: 1989-08-07
Abstract
Abstract An improved gunsight utilizing radioluminescent material for permitting sighting of the gun in darkened conditions is described. Particular housings for holding the radioluminescent material are also described, together with methods of applying the radioluminescent material to the sights of guns.
Inventors
- 👤 Elliel F Knutsen
- 👤 Julio A Santiago
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:34
CPC Classifications
F; F41; F41G; F41G1/00; F41G1/32
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
50 words
The combination as in claim 1 wherein said enclosure in said housing means extends generally perpendicular to said viewing face and is generally circular in cross section, said first radioluminescent means enclosed in said enclosure thereby appearing as a generally circular spot of light when viewed at said viewing face.
Claim 2
Dependent Claim
63 words
The combination as in claim 2 wherein a closure of one end of said enclosure is formed by an integral thickness of material at said viewing face, and the opening end of said enclosure intersects said first mounting surface at a predetermined angle forming a filling opening thereat, and includes sealing means for sealing said filling opening for containing said first radioluminescent means.
Claim 3
Dependent Claim
38 words
The combination of claim 1 wherein said first radioluminescent means comprises a fiRst tubular member having first and second closed ends for forming an enclosure therebetween, and a first predetermined radioluminescent material contained within said first tubular member.
Claim 4
Dependent Claim
52 words
The combination as in claim 1 wherein said second housing means includes a plurality of said transparent viewing portions, each of said viewing portions having an enclosure portion associated therewith for containing a portion of said second radioluminescent means, and arranged in a predetermined relation to the notch of said rear sight.
Claim 5
Dependent Claim
25 words
The combination as in claim 5 wherein one of said plurality of viewing portions is at a predetermined position at either side of said notch.
Claim 6
Dependent Claim
32 words
The combination as in claim 4 wherein said tubular member is made from transparent glass for at least partially shielding a user from predetermined types of radiation from said contained radioluminescent material.
Claim 7
Dependent Claim
47 words
The combination as in claim 1 wherein a closure of one end of said enclosure is formed by an integral thickness of material at said first mounting surface, and the opening of said enclosure intersects said viewing face at a predetermined angle forming a filling opening thereat.
Claim 8
Dependent Claim
39 words
The combination as in claim 1 wherein said second radioluminescent means comprises a second tubular member having first and second closed ends for forming an enclosure therebetween, and a second predetermined radioluminescent material contained within said second tubular member.
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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) | 1975-02-14 | 1975-08-16 | 1976-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-14 | 1979-08-16 | 1980-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-14 | 1983-08-16 | 1984-02-15 | $7700.00 | Window Closed / Lapsed |