US4987433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ring and point strobe
Assignee: Individual
•
Filing: 1989-12-01
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Granted: 1991-01-22
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Expires: 2009-12-01
Abstract
Abstract A ring and point strobe includes a ring strobe and a support housing to secure the ring strobe to the end portion of a camera lens. A support bracket is movably secured to the strobe unit and supports a point source strobe. A detent mechanism is coupled between the movable bracket and the remainder of the strobe unit to permit the point source strobe to be positioned in a plurality of detented angular positions.
Inventors
- 👤 S. Garfield Gandrud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:40
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/05; G03B2215/00; G03B2215/05; G03B2215/0514; G03B2215/0517; G03B2215/0539
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
109 words
For use in combination with a camera having a lens defining a lens opening and shutter means for triggering a strobe unit, a ring and point strobe comprising: a detent housing having clamp means for attachment to a camera lens; a ring strobe bulb supported upon said detent housing and encircling at least a portion of the lens opening; a point source strobe bulb; a support bracket, received upon said detent housing, supporting said point source strobe bulb; and detent means coupled between said support bracket and said detent housing operative to detentably position said support bracket at a plurality of distinct angular positions about said ring strobe bulb.
Claim 2
Dependent Claim
109 words
For use in combination with a camera having a lens defining a lens opening and shutter means for triggering a strobe unit, a ring and point strobe comprising: a detent housing having clamp means for attachment to a camera lens; a ring strobe bulb supported upon said detent housing and encircling at least a portion of the lens opening; a point source strobe bulb; a support bracket, received upon said detent housing, supporting said point source strobe bulb; and detent means coupled between said support bracket and said detent housing operative to detentably position said support bracket at a plurality of distinct angular positions about said ring strobe bulb.
Claim 3
Dependent Claim
33 words
A ring and point strobe as set forth in claim 1 further including limit means for limiting the angular positions of said support bracket to approximately a one hundred and eighty degree range.
Claim 4
Dependent Claim
33 words
A ring and point strobe as set forth in claim 2 wherein said detent housing defines an annular rim and wherein said support bracket defines an annular portion received upon said annular rim.
Claim 5
Dependent Claim
37 words
A ring point strobe as set forth in claim 3 further including an annular front plate supporting said ring strobe bulb and means securing said front plate to said detent housing to captivate said support bracket therebetween.
Claim 6
Dependent Claim
42 words
A ring and point strobe as set forth in claim 4 wherein said detent means include: a plurality of detent recesses defined in said annular portion of said support bracket; and a plurality of detent balls resiliently supported within said detent housing.
Claim 7
Dependent Claim
42 words
A ring and point strobe as set forth in claim 5 wherein said limit means include: a curved slot defined in said front plate facing said support bracket; and a projection extending from said support bracket and received within said curved slot.
Claim 8
Dependent Claim
84 words
A ring and point strobe as set forth in claim 1 further including: a power source coupled to said ring strobe bulb and said point source strobe bulb; first and second trigger transformers having first and second primary windings and first and second secondary windings coupled to said ring strobe bulb and said point source bulb respectively; and a switch selectively coupling either of said first and second primary windings to said power source to selectively trigger a selected one of said strobe bulbs.
References Cited (Backward Citations)
US4816854A
Cited
US4887106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-01-21 | 1994-07-23 | 1995-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-21 | 1998-07-23 | 1999-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-21 | 2002-07-23 | 2003-01-22 | $7700.00 | Window Closed / Lapsed |