Patent US4428648A successfully refreshed from Google Patents.
US4428648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparency viewing device
Assignee: Individual
•
Filing: 1981-11-25
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Granted: 1984-01-31
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Expires: 2001-11-25
Abstract
Abstract A transparency viewing device includes a floor supported stand which is vertically adjustable to locate a horizontal arm and a housing thereon at the desired elevation. The housing within which the transparency or color slide is temporarily positioned includes a light diffuser to illuminate the slide which is viewed through a housing supported lens. A reflector is carried by a housing platform in a manner permitting in a wide range of universal adjustment for purposes of reflecting available light rays toward the diffuser. A more powerful magnification lens may be substituted for the first mentioned lens and is supported adjacent a front wall of the housing for magnification of a slide also in place on the housing front wall. The housing is removable from the stand for use as a hand held slide viewer.
Inventors
- 👤 Richard H. Wiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:43
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/02; G02B27/022
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
128 words
A transparency viewing device for supporting a transparent color slide at eye level, said device comprising in combination, a stand having floor engaging feet and a vertically adjustable member, a horizontal arm carried by said member, a platform adjustably mounted on said arm, a housing on said platform, said housing adapted to receive a transparency, said housing including a lens through which the transparency may be viewed, a light diffuser within said housing, a reflector mounted on said platform and offset from said housing to enable the directing of light rays onto said diffuser, and mounting means carried by said platform and offset from said housing and mounting said reflector thereon in a universal manner to facilitate the direction of light rays from various directions onto said diffuser.
Claim 2
Dependent Claim
128 words
A transparency viewing device for supporting a transparent color slide at eye level, said device comprising in combination, a stand having floor engaging feet and a vertically adjustable member, a horizontal arm carried by said member, a platform adjustably mounted on said arm, a housing on said platform, said housing adapted to receive a transparency, said housing including a lens through which the transparency may be viewed, a light diffuser within said housing, a reflector mounted on said platform and offset from said housing to enable the directing of light rays onto said diffuser, and mounting means carried by said platform and offset from said housing and mounting said reflector thereon in a universal manner to facilitate the direction of light rays from various directions onto said diffuser.
Claim 3
Dependent Claim
28 words
The viewing device claimed in claim 1 wherein said platform is positionable both horizontally from and about the vertical axis of the vertically adjustable member of the stand.
Claim 4
Dependent Claim
21 words
The viewing device claimed in claim 2 wherein said platform additionally includes threaded means for seated engagement with the stand arm.
Claim 5
Dependent Claim
40 words
The viewing device claimed in claim 3 wherein said reflector includes opposing leg members in frictional engagement with said mounting means one of said leg members being partially displaceable, a fastener assembly for biasing said one of said leg members.
Claim 6
Dependent Claim
66 words
The viewing device claimed in claim 1 wherein said lens is detachable from said housing, said device additionally including a magnifier lens, a bracket engageable with said housing and supporting the magnifier lens exteriorly of the housing subsequent to removal of the first mentioned lens for greater magnification of the transparency, said magnifier lens adapted to frictionally retain the transparency in place on the housing exterior.
Claim 7
Dependent Claim
96 words
A transparency viewing device comprising in combination, a housing adapted to receive a transparency, said housing including a lens through which the transparency may be viewed, a light diffuser within said housing, a platform supporting said housing, a reflector carried by said platform in an adjustable manner so as to enable the directing of light rays toward said housing and onto said diffuser, and universal mounting means on said platform and mounting said reflector thereon in a universal manner to facilitate the directing of reflected light rays from a wide range of directions onto said diffuser.
Claim 8
Dependent Claim
96 words
A transparency viewing device comprising in combination, a housing adapted to receive a transparency, said housing including a lens through which the transparency may be viewed, a light diffuser within said housing, a platform supporting said housing, a reflector carried by said platform in an adjustable manner so as to enable the directing of light rays toward said housing and onto said diffuser, and universal mounting means on said platform and mounting said reflector thereon in a universal manner to facilitate the directing of reflected light rays from a wide range of directions onto said diffuser.
Claim 9
Dependent Claim
37 words
The viewing device claimed in claim 6 wherein said reflector includes opposing leg members in frictional engagement with said mounting means, one of said leg members having a displaceable segment, a fastener assembly for biasing said segment.
Claim 10
Dependent Claim
66 words
The viewing device claimed in claim 6 wherein said lens is detachable from said housing, said device additionally including a magnifier lens, a bracket engageable with said housing and supporting the magnifier lens exteriorly of the housing subsequent to removal of the first mentioned lens for greater magnification of the transparency, said magnifier lens adapted to frictionally retain the transparency in place on the housing exterior.
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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) | 1987-01-30 | 1987-08-01 | 1988-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-30 | 1991-08-01 | 1992-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-30 | 1995-08-01 | 1996-01-31 | $7700.00 | Window Closed / Lapsed |