US4055000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater sight for a spear gun or the like
Assignee: Individual
•
Filing: 1976-04-28
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Granted: 1977-10-25
•
Expires: 1996-04-28
Abstract
Abstract An elongated tube, adapted to be longitudinally supported by a spear gun, or the like, is provided with a transparent transverse partition at its forward end portion for preventing water entering the major portion of the tube when its forward end portion is immersed. A battery powered lamp, secured by a bracket within the water excluded end portion of the tube, illuminates a target through the transparent partition. A sight area, scored on the transparent partition, visually indicates when the gun is aligned with the target.
Inventors
- 👤 Louie P. Cesin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:54
CPC Classifications
F; F41; F41G; F41G1/00; F41G1/32; F41G1/34; F41G1/06; F41G1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
An underwater sight for a spear gun, or the like, comprising: an elongated tube having forward and rearward open ends and having means including sockets in its wall for connection with a spear gun; a transparent wall transversely dividing said tube adjacent one end portion for excluding water from the other end portion of said tube when said one end portion is immersed, the end surface of the immersed end of said tube being inclined at an acute angle with respect to the longitudinal axis of the tube, said tube having a bleed hole in its walls adjacent and in front of said partition; and, lamp means contained by said other end portion of said tube for illuminating a submersed target.
Claim 2
Dependent Claim
121 words
An underwater sight for a spear gun, or the like, comprising: an elongated tube having forward and rearward open ends and having means including sockets in its wall for connection with a spear gun; a transparent wall transversely dividing said tube adjacent one end portion for excluding water from the other end portion of said tube when said one end portion is immersed, the end surface of the immersed end of said tube being inclined at an acute angle with respect to the longitudinal axis of the tube, said tube having a bleed hole in its walls adjacent and in front of said partition; and, lamp means contained by said other end portion of said tube for illuminating a submersed target.
References Cited (Backward Citations)
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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) | 1980-10-24 | 1981-04-25 | 1981-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-24 | 1985-04-25 | 1985-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-24 | 1989-04-25 | 1989-10-25 | $7700.00 | Window Closed / Lapsed |