Patent US4454669A successfully refreshed from Google Patents.
US4454669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-Ray and photographic viewer
Assignee: Individual
•
Filing: 1981-11-18
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Granted: 1984-06-19
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Expires: 2001-11-18
Abstract
Abstract A portable, easy to use photographic viewer for use particularly by medical and dental professionals when required. The viewer is light weight and includes a light source, a photographic imaging screen, clip to retain the photographic slides or negatives in position and a support for maintaining the viewer in any desirable position.
Inventors
- 👤 Robert N. Simmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:20
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/02; G02B27/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
164 words
A portable X-ray and photographic viewer comprising a body having fixed imaging screen upon which an item to be viewed may be placed, a light source disposed behind said imaging screen and within said viewer body, power means contained within said body for permitting selective energization of said light means to illuminate said screen and an item positioned thereon to permit viewing thereof, magnifying means, and support means on said body supporting said magnifying means for adjustable positioning relative to said screen, said support means including linkage between said body and magnifying means and connected closely adjacent said screen to pivotally couple said body and magnifying means for permitting positioning of said magnifying means between an X-ray viewing position in parallel spaced relation to said screen and a travel position directly overlying said screen without movement of said screen relative to said body, and means on said body for positively and releaseably engaging and retaining said magnifying means when located in said travel position.
Claim 2
Dependent Claim
164 words
A portable X-ray and photographic viewer comprising a body having fixed imaging screen upon which an item to be viewed may be placed, a light source disposed behind said imaging screen and within said viewer body, power means contained within said body for permitting selective energization of said light means to illuminate said screen and an item positioned thereon to permit viewing thereof, magnifying means, and support means on said body supporting said magnifying means for adjustable positioning relative to said screen, said support means including linkage between said body and magnifying means and connected closely adjacent said screen to pivotally couple said body and magnifying means for permitting positioning of said magnifying means between an X-ray viewing position in parallel spaced relation to said screen and a travel position directly overlying said screen without movement of said screen relative to said body, and means on said body for positively and releaseably engaging and retaining said magnifying means when located in said travel position.
Claim 3
Dependent Claim
17 words
The universal viewer of claim 1 wherein said light source is accuated by a rechargeable power source.
Claim 4
Dependent Claim
21 words
The viewer of claim 1 in which said magnifying means is a magnifying lens sized substantially in conformity with said screen.
Claim 5
Dependent Claim
18 words
The viewer of claim 3 including means for adjustably supporting said body in an upstanding position during use.
Claim 6
Dependent Claim
22 words
The viewer of claim 4 in which said adjustable body supporting means is positionable to a travel position immediately adjacent said body.
Claim 7
Dependent Claim
25 words
The viewer of claim 4 in which said adjustable body supporting means is an adjustable mount slidably positionable on the back side of said body.
Claim 8
Dependent Claim
25 words
The viewer of claim 4 including clip means for positively retaining an item on said screen when said body is supported in an upstanding position.
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) | 1987-06-19 | 1987-12-19 | 1988-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-19 | 1991-12-19 | 1992-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-19 | 1995-12-19 | 1996-06-19 | $7700.00 | Window Closed / Lapsed |