US4958907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Computer screen magnifier
Assignee: Individual
•
Filing: 1989-01-17
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Granted: 1990-09-25
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Expires: 2009-01-17
Abstract
Abstract A holder for adjustably positioning a flatsheet magnifier proximate a visual display terminal comprises a mounting for retaining the magnifier and a support for extensibly positioning the mounting in a predetermined, spaced-apart relationship with the terminal. Disclosed are particular arrangements of mounts and supports including slidable members, telescopic legs and pivoting, scissor-action legs, all of which provide for the positioning of a magnifier proximate a display screen.
Inventors
- 👤 Dale G. Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:55
CPC Classifications
G; G02; G02B; G02B25/00; G02B25/002; G02B3/00; G02B3/02; G02B3/08; Y; Y10; Y10S; Y10S248/00; Y10S248/917; Y10S248/918
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
82 words
A holder for adjustable positioning a flat sheet magnifier proximate a video display terminal comprising: mounting means for retaining said magnifier, said mounting means including a spring biased clamping device for securely holding said magnifier thereto; and means for supporting and extensibly positioning said mounting means in a predetermined, spaced-apart relationship with said terminal, said means including at least one support arm having said clamping device disposed at one end thereof, and a flat, rectangular retaining block securedly affixed to said terminal.
Claim 2
Dependent Claim
82 words
A holder for adjustable positioning a flat sheet magnifier proximate a video display terminal comprising: mounting means for retaining said magnifier, said mounting means including a spring biased clamping device for securely holding said magnifier thereto; and means for supporting and extensibly positioning said mounting means in a predetermined, spaced-apart relationship with said terminal, said means including at least one support arm having said clamping device disposed at one end thereof, and a flat, rectangular retaining block securedly affixed to said terminal.
Claim 3
Dependent Claim
25 words
A holder as in claim 1, fabricated from a material selected from the group consisting essentially of: synthetic polymeric materials, metals, wood and combinations thereof.
Claim 4
Dependent Claim
44 words
A holder as defined in claim 1, wherein said flat, retaining block defines at least one hole for slidably receiving the other end of said at least one support arm therein for extensibly positioning said magnifier linearly along an axis coextensive with said arm.
Claim 5
Dependent Claim
44 words
A holder as defined in claim 3, wherein said hole is defined by a downwardly depending U-shaped channel formed on an upper surface of said flat retaining block and positioned on either side f a centerline thereof, said centerline being parallel to said axis.
References Cited (Backward Citations)
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Cited
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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) | 1993-09-24 | 1994-03-26 | 1994-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-24 | 1998-03-26 | 1998-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-24 | 2002-03-26 | 2002-09-25 | $7700.00 | Window Closed / Lapsed |