US4940311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable magnifying device
Assignee: Individual
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Filing: 1988-12-09
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Granted: 1990-07-10
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Expires: 2008-12-09
Abstract
Abstract A device (10) for magnifying material embodied in a tangible medium (12), such as a writing, drawings, photographs, pictures, and the like. The device (10) includes a transparent base (14) for placing over the tangible medium (12) to be magnified, the base (14) having a bottom side edge (16) and a U-shaped lip (18) connected to the bottom side edge (16). Extending upwardly from the bottom side edge (16), the U-shaped lip (18) extends inwardly over the bottom side edge (16) of the base (14). The device (10) also includes a magnifying sheet (20) with a basal edge (22) which is engaged by the U-shaped lip (18). An adjustable fastener (24) extends between the magnifying sheet (20) and the base (14). The adjustable fastener (24) allows the magnifying sheet (20) to be selectively supported in an inclined position above the base (14) so that the indicia in the tangible medium (12) to be viewed are magnified in an amount determined by the selected angle of inclination (α) of the magnifying sheet (20) and the base (14).
Inventors
- 👤 Daniel F. Buszek
- 👤 Frank J. Buszek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:00
CPC Classifications
G; G02; G02B; G02B25/00; G02B25/002; G02B3/00; G02B3/02; G02B3/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
163 words
A device for magnifying indicia embodied in a tangible medium, such as a writing, drawings, photographs, pictures and the like, the device comprising: a transparent base for placement over the tangible medium having indicia to be magnified, said transparent base having a bottom side edge; a U-shape lip connected to said bottom side edge of said transparent base, said U-shaped lip extending upwardly from and inwardly over said bottom side edge of said base; a magnifying sheet having a basal edge, said basal edge being foldably connected to said magnifying sheet, said basal edge being engaged by said U-shaped lip; and an adjustable fastener extending between said magnifying sheet and said transparent base, said adjustable fastener permitting said magnifying sheet to be selectively supported in an inclined position above said transparent base so that the indicia in the tangible medium to be viewed are magnified in an amount determined by the selected angle of inclination of said magnifying sheet and said transparent base.
Claim 2
Independent Claim
163 words
A device for magnifying indicia embodied in a tangible medium, such as a writing, drawings, photographs, pictures and the like, the device comprising: a transparent base for placement over the tangible medium having indicia to be magnified, said transparent base having a bottom side edge; a U-shape lip connected to said bottom side edge of said transparent base, said U-shaped lip extending upwardly from and inwardly over said bottom side edge of said base; a magnifying sheet having a basal edge, said basal edge being foldably connected to said magnifying sheet, said basal edge being engaged by said U-shaped lip; and an adjustable fastener extending between said magnifying sheet and said transparent base, said adjustable fastener permitting said magnifying sheet to be selectively supported in an inclined position above said transparent base so that the indicia in the tangible medium to be viewed are magnified in an amount determined by the selected angle of inclination of said magnifying sheet and said transparent base.
Claim 3
Dependent Claim
91 words
The device of claim 1, wherein said transparent base and said magnifying sheet are generally rectangular, said magnifying sheet further including: a distal edge opposing said basal edge; a pair of lateral edges extending between said basal edge and said distal edge; and a central portion extending between said basal edge, said distal edge and said pair of lateral edges; said distal and said lateral edges being foldably connected to said central portion of said magnifying sheet, so that when folded, said distal and said lateral edges stiffen said magnifying sheet.
Claim 4
Dependent Claim
128 words
The device of claim 2, wherein said adjustable fastener comprises: an upper segment attached to said magnifying sheet proximate one of said pair of lateral edges, said upper segment also having a plurality of upper retainers embedded therein; a flexible strip having an upper portion and a lower portion connected to said upper portion, said upper portion of said flexible strip being adapted to engage some of said plurality of upper retainers in said upper segment; and a lower segment attached to said transparent base, said lower segment having a plurality of lower retainers embedded therein, said upper and said lower retainers being adapted to engage respective upper and lower portions of said flexible strip, so that said flexible strip is adjustable between said upper and lower segments.
References Cited (Backward Citations)
US3537776A
Cited
US4786143A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-09 | 1994-01-08 | 1994-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-09 | 1998-01-08 | 1998-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-09 | 2002-01-08 | 2002-07-10 | $7700.00 | Window Closed / Lapsed |