US4944586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automated transparency organizer
Assignee: EIDP Inc
•
Filing: 1989-11-30
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Granted: 1990-07-31
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Expires: 2009-11-30
Abstract
Abstract A cassette web transport mechanism is placed upon an overhead image projector. Multiple overhead projector slides are conveniently secured in a roll of the web. The web is moved in forward or reverse direction by remote control in order to display the desired slide through the projector.
Inventors
- 👤 Bruce M. Rightmyre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:54
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/132; Y; Y10; Y10S; Y10S353/00; Y10S353/03; Y10S353/05
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
101 words
A conveniently demountable apparatus for use in conjunction with an overhead projector, for storing and automatically displaying overhead transparencies comprising: a. a web means having at least one transparent section thereon; b. means for holding at least one overhead transparency on said web means over said transparent section said means for holding comprising corner strip means for securing an overlay leaf; c. cassette means for positioning said web means in proper alignment over said overhead projector; d. means for driving said web means and said transparencies mounted thereon in said cassette means over the active projecting area of said overhead projector.
Claim 2
Dependent Claim
101 words
A conveniently demountable apparatus for use in conjunction with an overhead projector, for storing and automatically displaying overhead transparencies comprising: a. a web means having at least one transparent section thereon; b. means for holding at least one overhead transparency on said web means over said transparent section said means for holding comprising corner strip means for securing an overlay leaf; c. cassette means for positioning said web means in proper alignment over said overhead projector; d. means for driving said web means and said transparencies mounted thereon in said cassette means over the active projecting area of said overhead projector.
Claim 3
Dependent Claim
96 words
A conveniently demountable apparatus for use in conjunction with an overhead projector, for storing and automatically displaying overhead transparencies comprising: a. a web means having at least one transparent section thereon; b. means for holding at least one overhead transparency on said web means over said transparent section, said means for holding comprising dual overlay leaves; c. cassette means for positioning said web means in proper alignment over said overhead projector; d. means for driving said web means and said transparencies mounted thereon in said cassette means over the active projecting area of said overhead projector.
Claim 4
Dependent Claim
96 words
A conveniently demountable apparatus for use in conjunction with an overhead projector, for storing and automatically displaying overhead transparencies comprising: a. a web means having at least one transparent section thereon; b. means for holding at least one overhead transparency on said web means over said transparent section, said means for holding comprising dual overlay leaves; c. cassette means for positioning said web means in proper alignment over said overhead projector; d. means for driving said web means and said transparencies mounted thereon in said cassette means over the active projecting area of said overhead projector.
References Cited (Backward Citations)
AU230036A
Cited
US3317151A
Cited
GB1431542A
Cited
JPS6031126A
Cited
DE3439923A1
Cited
JPS62258437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-30 | 1994-01-29 | 1994-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-30 | 1998-01-29 | 1998-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-30 | 2002-01-29 | 2002-07-31 | $7700.00 | Window Closed / Lapsed |