US3725694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable lamp for viewing fluorescent material
Assignee: BNY Mellon NA
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Filing: 1971-04-05
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Granted: 1973-04-03
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Expires: 1991-04-05
Abstract
Abstract Portable lamp, such as a flashlight, for viewing printed material having fluorescent, normally invisible markings thereon, comprising a flashlight having an ultraviolet lamp, and an opaque hood around the lamp and projecting beyond the lamp. The end of the hood is opened and is adapted to be placed against a printed document to be viewed. An aperture is provided in the side of the hood through which the document may be viewed while it is held against the end of the hood.
Inventors
- 👤 O Lednicer
- 👤 Amato S D
- 👤 C Guertin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:10
CPC Classifications
F; F21; F21V; F21V33/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
127 words
A portable lamp for viewing fluorescent printed material, including: a. a casing; b. an ultraviolet lamp supported on the casing; c. electric circuit means for energizing the lamp including switch means mounted on the casing; wherein the improvement comprises: d. an opaque hood mounted on the casing and encircling the lamp and projecting beyond the lamp and open at its end remote from the casing, said open end being adapted to be placed against a document to be viewed, said hood having an aperture in one side thereof through which a document may be viewed while it is in contact with the open end, said hood being effective to shield the portion of the hood against illumination from external sources other than those aligned with the aperture.
Claim 2
Dependent Claim
127 words
A portable lamp for viewing fluorescent printed material, including: a. a casing; b. an ultraviolet lamp supported on the casing; c. electric circuit means for energizing the lamp including switch means mounted on the casing; wherein the improvement comprises: d. an opaque hood mounted on the casing and encircling the lamp and projecting beyond the lamp and open at its end remote from the casing, said open end being adapted to be placed against a document to be viewed, said hood having an aperture in one side thereof through which a document may be viewed while it is in contact with the open end, said hood being effective to shield the portion of the hood against illumination from external sources other than those aligned with the aperture.
Claim 3
Dependent Claim
29 words
A portable lamp as defined in claim 1, including retaining means inside the hood between the side aperture and the lamp, and a window supported on said retaining means.
Claim 4
Dependent Claim
86 words
A hood adapted for attachment to an ultraviolet lamp to adapt it for viewing printed material, including an elongated hollow, opaque member having means at one end for attachment of the casing of the ultraviolet lamp, said member being open at the other end, and having a side aperture adjacent said other end through which a document placed in contact with the open end may be viewed, while it is shielded by the hood from light from external sources other than those aligned with the aperture.
Claim 5
Dependent Claim
86 words
A hood adapted for attachment to an ultraviolet lamp to adapt it for viewing printed material, including an elongated hollow, opaque member having means at one end for attachment of the casing of the ultraviolet lamp, said member being open at the other end, and having a side aperture adjacent said other end through which a document placed in contact with the open end may be viewed, while it is shielded by the hood from light from external sources other than those aligned with the aperture.
References Cited (Backward Citations)
US2544859A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |