Patent FR1248397A successfully refreshed from Google Patents.
US3728801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Audio-visual teaching unit
Assignee: Individual
•
Filing: 1971-11-08
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Granted: 1973-04-24
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Expires: 1991-11-08
Abstract
Abstract An individual study facility incorporating a projector and a tape player fully enclosed within a cabinet structure made up of modular subassemblies including a portable, readily removable optical module or chassis on which the projector and associated mirrors are supported and a removable, hingedly mounted front panel assembly on which a rear projection viewing screen and the tape player are mounted. The front panel has an access opening at one end thereof directly in front of the projector for loading slides, and a slidable door normally covering the projector access opening is movable to an open position wherein it blocks the viewing screen on the other end of the front panel to preclude use of the projector and visual aids until the projector access door has been closed.
Inventors
- 👤 R Beckman
- 👤 B Spangler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:49
CPC Classifications
G; G09; G09B; G09B5/00; G09B5/06; G09B5/067
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
113 words
A fully enclosed, audio-visual study console comprising: a cabinet structure including end, front, back, top and bottom walls housing a projector and a tape player; a hingedly mounted front panel defining the front wall for said cabinet structure, said front panel being swingable outwardly to an open position permitting access to the interior of said cabinet structure and to said projector and tape player; a projector access opening at one end of said front panel in horizontal alignment with said projector; a rear projection, front viewing screen on the opposite end of said front panel; and image conveying means within said cabinet structure for directing picture images from said projector onto said screen.
Claim 2
Dependent Claim
113 words
A fully enclosed, audio-visual study console comprising: a cabinet structure including end, front, back, top and bottom walls housing a projector and a tape player; a hingedly mounted front panel defining the front wall for said cabinet structure, said front panel being swingable outwardly to an open position permitting access to the interior of said cabinet structure and to said projector and tape player; a projector access opening at one end of said front panel in horizontal alignment with said projector; a rear projection, front viewing screen on the opposite end of said front panel; and image conveying means within said cabinet structure for directing picture images from said projector onto said screen.
Claim 3
Dependent Claim
36 words
An audio-visual study console as defined in claim 1 wherein: said tape player is mounted on said front panel and is swingable therewith to said front panel open position to permit servicing of said tape player.
Claim 4
Dependent Claim
47 words
An audio-visual study console as defined in claim 2 wherein: said projector is supported at an elevated position on a platform within said cabinet structure and said tape player is received within a compartment within said cabinet structure under said projector when said front panel is closed.
Claim 5
Dependent Claim
60 words
An audio-visual study console as defined in claim 1 wherein: said viewing screen is coplanar with the plane of said front panel, said projector is oriented to project an image beam parallel to the plane of said front panel, and said image conveying means includes a system of reflective mirrors arranged to reflect images from said projector onto said screen.
Claim 6
Dependent Claim
57 words
An audio-visual study console as defined in claim 1 wherein: said viewing screen is disposed in the vertical plane of said front panel; said image conveying means comprises at least one reflective mirror; and both said projector and said image conveying means are supported on a portable chassis freely movable into and out of said cabinet structure.
Claim 7
Dependent Claim
76 words
An audio-visual study console as defined in claim 1 wherein: said projector access opening in said front panel is normally closed by a door member movable to an open position wherein it overlies and blocks at least a portion of saiD viewing screen, whereby said door member must be closed, thereby removing said projector from view and dampening the noise emitted by said projector, before picture images from said projector can be seen on said screen.
Claim 8
Dependent Claim
58 words
An audio-visual study console as defined in claim 1, and further including: a vent stack for projector cooling air located at a rear corner of said cabinet structure, said vent stack having an air inlet communicating with a hot air exhaust passage of said projector and an air outlet communicating with a vent port in said top wall.
Claim 9
Dependent Claim
130 words
An audio-visual study assembly comprising: a projector and a tape player contained within a cabinet structure including an upright front panel; a projector access opening in said front panel in horizontal alignment with said projector; a viewing screen mounted on said front panel adjacent to said projector access openings; means for directing an image beam from said projector onto said screen; and a door on said front panel normally closing said projector access opening and movable to an open position in blocking relation to at least a portion of said screen, whereby said door must be closed before picture images from said projector can be seen on said screen, thereby removing said projector from view and dampening the noise emitted by said projector when said study assembly is in use.
Claim 10
Dependent Claim
130 words
An audio-visual study assembly comprising: a projector and a tape player contained within a cabinet structure including an upright front panel; a projector access opening in said front panel in horizontal alignment with said projector; a viewing screen mounted on said front panel adjacent to said projector access openings; means for directing an image beam from said projector onto said screen; and a door on said front panel normally closing said projector access opening and movable to an open position in blocking relation to at least a portion of said screen, whereby said door must be closed before picture images from said projector can be seen on said screen, thereby removing said projector from view and dampening the noise emitted by said projector when said study assembly is in use.
Claim 11
Dependent Claim
84 words
An audio-visual study assembly as defined in claim 8 wherein: said projector access opening is at one end of said front panel, and said viewing screen is at the opposite end of said front panel; and said door normally closing said projector access opening is slidably mounted on said front panel for sliding movement in a direction from said one end of said front panel towards said opposite end thereof to said open position wherein it is disposed in blocking relation to said screen.
Claim 12
Dependent Claim
127 words
An audio-visual study assembly comprising: a projector and a tape player contained within a cabinet structure; a removable front panel subassembly defining the front wall of said cabinet structure, said tape player being mounted on said front panel subassembly so as to be movable therewith and receivable within a predetermined space of said cabinet structure when said front panel assembly is in place; a rear projection, front viewing screen mounted on said front panel subassembly for receiving and displaying picture images from said projector; and a portable chassis supporting said projector within said cabinet structure at a predetermined location and oriented relative to said front panel for projecting picture images onto said viewing screen, said portable chassis being freely movable into and out of said cabinet structure.
Claim 13
Dependent Claim
127 words
An audio-visual study assembly comprising: a projector and a tape player contained within a cabinet structure; a removable front panel subassembly defining the front wall of said cabinet structure, said tape player being mounted on said front panel subassembly so as to be movable therewith and receivable within a predetermined space of said cabinet structure when said front panel assembly is in place; a rear projection, front viewing screen mounted on said front panel subassembly for receiving and displaying picture images from said projector; and a portable chassis supporting said projector within said cabinet structure at a predetermined location and oriented relative to said front panel for projecting picture images onto said viewing screen, said portable chassis being freely movable into and out of said cabinet structure.
Claim 14
Dependent Claim
42 words
An audio-visual study assembly as defined in claim 10 wherein: said front panel subassembly is hingedly attached to said cabinet structure for swinging movement along a vertical, hinge axis to an open position permitting access to the interior of said cabinet structure.
Claim 15
Dependent Claim
33 words
An audio-visual study assembly as defined in claim 10, and further including: a power supply junction box for supplying power to said projector and said tape player mounted on said front panel subassembly.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |