Patent US3656845A successfully refreshed from Google Patents.
US3656845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-point-projector
Assignee: Individual
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Filing: 1970-01-23
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Granted: 1972-04-18
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Expires: 1990-01-23
Abstract
Abstract Aiming projector for attachment to a gun, or the like, for assisting in aiming thereof by providing, from a single light source, a projected bright spot indicating the point of aim and generalized illumination of the area of aim to a lower intensity.
Inventors
- 👤 Ernst Koch-Bossard
- 👤 Max August Pietsch-Faber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:15
CPC Classifications
F; F41; F41G; F41G3/00; F41G3/26; F41G3/2616; F41G3/2694
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
174 words
Projector for aiming at an object and indicating the point of aim comprising, in combination, an elongated generally tubular housing, a shutter mounted within said housing separating said housing into forward and rearward portions provided with a generally circular central aperture extending therethrough for blocking the passage of light except through that aperture, a light source disposed in said rearward portion of said housing in general alignment with said aperture, a lens system disposed in said forward portion with the axis thereof being in general alignment with the center of said aperture for projecting a beam of light defined by said aperture generally axially forwardly of said housing to brightly illuminate such object at the point of aim of the projector and a generally conical internally reflective mirror flaring outwardly forwardly of said aperture for reflecting light from said source into said lens system for projection thereby generally forwardly of said housing in a widened beam defined by said mirror to provide a ring of lesser illumination to said object surrounding the aiming point.
Claim 2
Dependent Claim
174 words
Projector for aiming at an object and indicating the point of aim comprising, in combination, an elongated generally tubular housing, a shutter mounted within said housing separating said housing into forward and rearward portions provided with a generally circular central aperture extending therethrough for blocking the passage of light except through that aperture, a light source disposed in said rearward portion of said housing in general alignment with said aperture, a lens system disposed in said forward portion with the axis thereof being in general alignment with the center of said aperture for projecting a beam of light defined by said aperture generally axially forwardly of said housing to brightly illuminate such object at the point of aim of the projector and a generally conical internally reflective mirror flaring outwardly forwardly of said aperture for reflecting light from said source into said lens system for projection thereby generally forwardly of said housing in a widened beam defined by said mirror to provide a ring of lesser illumination to said object surrounding the aiming point.
Claim 3
Dependent Claim
16 words
Projector defined in claim 1 wherein said mirror extends between said aperture and said lens system.
Claim 4
Dependent Claim
22 words
Projector defined in claim 2 further comprising a second generally conical mirror flaring generally forwardly extending substantially entirely around said lens system.
Claim 5
Dependent Claim
37 words
Projector defined in claim 3 further comprising a spherical mirror portion positioned generally rearwardly of said light source with the center thereof substantially at said light source to reflect backlight from said source forwardly through said aperture.
Claim 6
Dependent Claim
35 words
Projector defined in claim 1 further comprising a line reticle disposed generally forwardly of said light source for dividing the aiming point beam and providing a darkened line generally centrally of the projected aiming point.
Claim 7
Dependent Claim
37 words
Projector defined in claim 1 further comprising a spherical mirror portion positioned generally rearwardly of said light source with the center thereof substantially at said light source to reflect backlight from said source forwardly through said aperture.
Claim 8
Dependent Claim
39 words
Projector defined in claim 1 wherein said light source comprises an elongated filament extending substantially perpendicular the axis of said lens system, said lens system forming the image of said filament on said object to define said aiming point.
Claim 9
Dependent Claim
43 words
Projector defined in claim 7 further comprising means positioned generally forwardly of said filament extending generally perpendicular thereto for casting a shadow thereacross and across the image thereof projected on the object by said lens system for more closely defining the aiming point.
Claim 10
Dependent Claim
23 words
Projector defined in claim 8 wherein said light source comprises a sealed bulb and said last-mentioned means comprises a sleeve mounted externally thereto.
Claim 11
Dependent Claim
42 words
Projector defined in claim 1 wherein said lens system comprises a negative lens generally adjacent said aperture and a positive lens generally forwardly thereof and further comprising an internally reflective generally conical mirror widening from the negative lens to the positive lens.
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) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |