← Back to Patent Explorer
US5580146A Expired / Lapsed US ⏱️ 0.0 years remaining

Rear screen video display system

Assignee: Projectavision Inc
•
Filing: 1995-08-11
•
Granted: 1996-12-03
•
Expires: 2015-08-11
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A rear screen video display system includes a panel assembly having a front panel for supporting a screen, a base panel attachable to the front panel, and two side panels pivotally attached to the front panel, the system further includes a housing structure supported on the base panel for housing a projector, the base panel having elements cooperating with respective elements of housing structure for releasably retaining the structure, the housing structure receiving a stand for supporting the projector in the housing.

Inventors

  • 👤 Marvin Maslow

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 19:00
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/12; H04N9/31; H04N9/3141; G; G03; G03B; G03B21/00; G03B21/10; H04N5/00; H04N5/74; H04N5/7408

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 130 words
A rear screen video display system, comprising: a panel means including a front panel for supporting a screen and a base panel attachable to the front panel; a housing structure for housing a projector, the base panel having means cooperating with respective means of the housing structure for releasably retaining the housing structure, the housing structure including means for supporting the projector in said housing structure; and mirror means located in a spaced relationship to the housing structure form reflecting the image emanating from the projector to the screen supported on the front panel; wherein said panel means is a rectangular, foldable structure, and wherein the base panel is pivotally attached to the front panel, said panel means further including right and left panels pivotally attached to the front panel.
Claim 2
Dependent Claim 130 words
A rear screen video display system, comprising: a panel means including a front panel for supporting a screen and a base panel attachable to the front panel; a housing structure for housing a projector, the base panel having means cooperating with respective means of the housing structure for releasably retaining the housing structure, the housing structure including means for supporting the projector in said housing structure; and mirror means located in a spaced relationship to the housing structure form reflecting the image emanating from the projector to the screen supported on the front panel; wherein said panel means is a rectangular, foldable structure, and wherein the base panel is pivotally attached to the front panel, said panel means further including right and left panels pivotally attached to the front panel.
Claim 3
Dependent Claim 19 words
The rear screen video display system of claim 1, wherein said housing structure is formed as a box-like structure.
Claim 4
Dependent Claim 38 words
The rear screen video display system of claim 2, wherein the box-like structure is foldable and is formed of three panels pivotally attachable to each other, two side panels and a bridge panel connecting the two side panels.
Claim 5
Dependent Claim 59 words
The rear screen video display system of claim 3, wherein the housing structure retaining means provided on the base panel comprises two spaced wedge-like slots, and the respective means of the housing structure comprises wedge means attached to bottom surfaces of the side panels of the housing structure and slidable into the two wedge-like slots of the base panel.
Claim 6
Dependent Claim 25 words
The rear screen video display system of claim 4, wherein the projector supporting means comprises a projector supporting stand releasably received in the housing structure.
Claim 7
Dependent Claim 67 words
The rear screen video display system of claim 5, wherein the wedge means comprises two half-wedge shoes attached to the bottom surfaces of the side panels of the housing structure, and the projector supporting stand has two further half-wedge shoes complimentary to the two half-wedge shoes of the housing structure and attached to a bottom of the stand for releasably retaining the stand in the housing structure.
Claim 8
Dependent Claim 19 words
The rear screen video display system of claim 1, wherein said mirror means is supported on said side panels.
Claim 9
Dependent Claim 158 words
A rear screen electronic video display system for displaying electronic video images, said system comprising: a base; a panel means for supporting a screen; a projector for projecting images onto the screen; a housing structure circumscribing at least a portion of said projector and including means for fixedly supporting the projector in a predetermined position relative to the screen in an operational condition of the system, said supporting means having means for releasably retaining the projector on or above said base; mirror means, located in a predetermined spatial relationship relative to the projector and to the screen, wherein said mirror means reflects images emanating from said projector onto a rear surface of the screen, whereby the video display system operates as a rear screen video display system and said projector, when removed from said releasably retaining means, being adapted to be used for "front" projection of images; and means for substantially decreasing ambient light from entering said system.
Claim 10
Dependent Claim 158 words
A rear screen electronic video display system for displaying electronic video images, said system comprising: a base; a panel means for supporting a screen; a projector for projecting images onto the screen; a housing structure circumscribing at least a portion of said projector and including means for fixedly supporting the projector in a predetermined position relative to the screen in an operational condition of the system, said supporting means having means for releasably retaining the projector on or above said base; mirror means, located in a predetermined spatial relationship relative to the projector and to the screen, wherein said mirror means reflects images emanating from said projector onto a rear surface of the screen, whereby the video display system operates as a rear screen video display system and said projector, when removed from said releasably retaining means, being adapted to be used for "front" projection of images; and means for substantially decreasing ambient light from entering said system.
Claim 11
Dependent Claim 25 words
The rear screen video display system of claim 8, wherein said housing structure is a docking station for enabling insertion and removal of said projector.

References Cited (Backward Citations)

US1283590A Cited
US3447783A Cited
US3749472A Cited
US3870411A Cited
US5491585A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1999-12-03 2000-06-03 2000-12-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2003-12-03 2004-06-03 2004-12-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2007-12-03 2008-06-03 2008-12-03 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag