Patent US2950675A successfully refreshed from Google Patents.
US5013149A
Expired / Lapsed
US
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Overhead projection highlighting device and method of use
Assignee: Individual
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Filing: 1989-06-02
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Granted: 1991-05-07
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Expires: 2009-06-02
Abstract
Abstract A highlighting device and method of use for focusing audience attention on an overhead projection is disclosed whereby a generally flat color tinted and light transmissive body having upper and lower surfaces with an optional handle and feet is employed as a register/highlighter for aligning and emphasizing an information transparency sheet.
Inventors
- 👤 Daniel L. Downum
- 👤 Robert L. LaFond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:30
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/26; Y; Y10; Y10S; Y10S353/00; Y10S353/05
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
137 words
A highlighting device for use on a stage surface of an overhead projector comprising a color tinted light transmissive body with upper and lower surfaces, wherein said body lies directly on or next to an information transparency sheet placed upon said stage surface and said body casts a substantially distortion free image upon a viewing surface to highlight said information transparency sheet, further comprising a plurality of support elements affixed to said lower body surface for supporting said body on said stage surface, wherein each of said support elements provides a sufficiently high coefficient of friction between said stage surface and said highlighting device so as to prevent movement of said highlighting device when at least two of said support elements are employed as a register for aligning and emphasizing an edge of said information transparency sheet.
Claim 2
Dependent Claim
137 words
A highlighting device for use on a stage surface of an overhead projector comprising a color tinted light transmissive body with upper and lower surfaces, wherein said body lies directly on or next to an information transparency sheet placed upon said stage surface and said body casts a substantially distortion free image upon a viewing surface to highlight said information transparency sheet, further comprising a plurality of support elements affixed to said lower body surface for supporting said body on said stage surface, wherein each of said support elements provides a sufficiently high coefficient of friction between said stage surface and said highlighting device so as to prevent movement of said highlighting device when at least two of said support elements are employed as a register for aligning and emphasizing an edge of said information transparency sheet.
Claim 3
Dependent Claim
48 words
An highlighting device according to claim 1, wherein said support elements total three, whereby two of said support elements are proximate an edge of said body used for said aligning and the third of said support elements is proximate an edge of said body opposite said aligning edge.
Claim 4
Dependent Claim
158 words
A highlighting device for use on a stage surface of an overhead projector, comprising: (a) a color tinted light transmissive body with upper and lower surfaces, wherein said body lies directly on or next to an information transparency sheet placed upon said stage surface and said body casts a substantially distortion free image upon a viewing surface to highlight said information transparency sheet and (b) means for positioning said body on said stage surface, wherein said means are associated with said upper surface, further comprising a plurality of support elements affixed to said lower body surface for supporting said body on said stage surface, wherein each of said support elements provides a sufficiently high coefficient of friction between said stage surface and said highlighting device so as to prevent movement of said highlighting device when at least two of said support elements are employed as a register for aligning and emphasizing an edge of said information transparency sheet.
Claim 5
Dependent Claim
158 words
A highlighting device for use on a stage surface of an overhead projector, comprising: (a) a color tinted light transmissive body with upper and lower surfaces, wherein said body lies directly on or next to an information transparency sheet placed upon said stage surface and said body casts a substantially distortion free image upon a viewing surface to highlight said information transparency sheet and (b) means for positioning said body on said stage surface, wherein said means are associated with said upper surface, further comprising a plurality of support elements affixed to said lower body surface for supporting said body on said stage surface, wherein each of said support elements provides a sufficiently high coefficient of friction between said stage surface and said highlighting device so as to prevent movement of said highlighting device when at least two of said support elements are employed as a register for aligning and emphasizing an edge of said information transparency sheet.
Claim 6
Independent Claim
161 words
A method of focusing audience attention on a selected portion of an information transparency sheet positioned on a stage of an overhead projector and viewed on a viewing surface, comprising the steps of: (a) placing on said stage surface a first highlighting device that serves as a register for aligning and emphasizing an edge of said information transparency sheet comprising a color tinted light transmissive body with upper and lower surfaces and at least one generally straight edge, wherein said body cast a substantially distortion free image upon said viewing surface; (b) aligning an edge of said information transparency sheet against said generally straight edge of said first highlighting device; and (c) laying on or near said information transparency sheet a second highlighting device comprising a color tinted light transmissive body with upper and lower surfaces and a generally flattened form having a suitable border outline to draw audience attention to a specific area or point of said information transparency sheet.
Claim 7
Independent Claim
161 words
A method of focusing audience attention on a selected portion of an information transparency sheet positioned on a stage of an overhead projector and viewed on a viewing surface, comprising the steps of: (a) placing on said stage surface a first highlighting device that serves as a register for aligning and emphasizing an edge of said information transparency sheet comprising a color tinted light transmissive body with upper and lower surfaces and at least one generally straight edge, wherein said body cast a substantially distortion free image upon said viewing surface; (b) aligning an edge of said information transparency sheet against said generally straight edge of said first highlighting device; and (c) laying on or near said information transparency sheet a second highlighting device comprising a color tinted light transmissive body with upper and lower surfaces and a generally flattened form having a suitable border outline to draw audience attention to a specific area or point of said information transparency sheet.
Claim 8
Dependent Claim
41 words
A method of focusing audience attention according to claim 4, further comprising the step of laying additional said second highlighting devices on or near said information transparency sheet to aid in emphasizing additional areas or points on said information transparency sheet.
Claim 9
Dependent Claim
34 words
A method of focusing audience attention according to claim 5, wherein said first and second highlighting devices further comprise means for positioning said body, wherein said means are associated with said body upper surface.
Claim 10
Dependent Claim
23 words
A method of focusing audience attention according to claim 6, wherein said positioning means is an handle affixed to said body upper surface.
Claim 11
Dependent Claim
91 words
A method of focusing audience attention according to claim 6, wherein said first highlighting device further comprises a plurality of support elements affixed to said lower body surface for supporting said body on said stage surface, wherein each of said support elements provides a sufficiently high coefficient of friction between said stage surface and said first highlighting device so as to prevent movement of said highlighting device when at least two of said support elements are employed as a register for aligning and emphasizing an edge of said information transparency sheet.
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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) | 1994-05-06 | 1994-11-05 | 1995-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-06 | 1998-11-05 | 1999-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-06 | 2002-11-05 | 2003-05-07 | $7700.00 | Window Closed / Lapsed |