Patent US2926543A successfully refreshed from Google Patents.
Patent US3940209A successfully refreshed from Google Patents.
US3940209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projector case assembly
Assignee: Magna Mir Inc
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Filing: 1974-07-12
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Granted: 1976-02-24
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Expires: 1994-07-12
Abstract
Abstract A projector case assembly designed for use with a projector system which utilizes a system of mirrors to provide enlarged panoramic viewing. The projector case assembly is designed to accommodate any standard movie or slide projector and it serves as both support means during the time of actual projection and as a storage means when the equipment is not in use.
Inventors
- 👤 Robert Portner
- 👤 Phillip Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:07
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/28
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
179 words
A projection case assembly unit for utilization with a standard projector and a system of mirrors which together provide enlarged exact images on a receiving surface removed from said projection case assembly comprising: a two-part foldable device having first and second sides which when folded, said sides are substantially parallel one to another to provide a compartment therebetween and which when said device is opened, said sides provide a base member and an upright member; means connected to said base member for supporting a projector upon said base member; a first mirror which is convex; means for securing said first mirror on said upright member with said reflective surface of said mirror facing outwardly from said base member; a second mirror which is substantially flat; and an estension member removably attached to said device and when attached extending outwardly from said device including means by which said second mirror is attached thereto and positioned to receive a projected beam and direct the beam against said first mirror whereby an enlarged image can thereby be reflected onto the receiving surface.
Claim 2
Dependent Claim
179 words
A projection case assembly unit for utilization with a standard projector and a system of mirrors which together provide enlarged exact images on a receiving surface removed from said projection case assembly comprising: a two-part foldable device having first and second sides which when folded, said sides are substantially parallel one to another to provide a compartment therebetween and which when said device is opened, said sides provide a base member and an upright member; means connected to said base member for supporting a projector upon said base member; a first mirror which is convex; means for securing said first mirror on said upright member with said reflective surface of said mirror facing outwardly from said base member; a second mirror which is substantially flat; and an estension member removably attached to said device and when attached extending outwardly from said device including means by which said second mirror is attached thereto and positioned to receive a projected beam and direct the beam against said first mirror whereby an enlarged image can thereby be reflected onto the receiving surface.
Claim 3
Dependent Claim
47 words
The projection case assembly unit of claim 1 further including third and fourth mirrors attached to said upright member, at least one of said third and fourth mirrors being adjustable vertically along said upright member to provide a means for reflecting beams from projectors of different heights.
Claim 4
Dependent Claim
33 words
The projection case assembly unit of claim 1 including a means of storing said first mirror secured to said upright member including an outer cover member which is attachable to said upright member.
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) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |