US4171882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light reflective projection system
Assignee: Individual
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Filing: 1978-06-01
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Granted: 1979-10-23
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Expires: 1998-06-01
Abstract
Abstract A light reflective projection system is disclosed. The system includes a combination of a light source, at least one reflective or transparent disc having means for rotation thereof and a lens. In one embodiment, disc rotation is provided by the rotatable turntable of a record player. In this embodiment, the reflective or transparent discs may be carried by a record mounted on the record player, by a pedestal member mounted over the spindle of the record player, or by a differential speed ring having drive wheels which bear upon and are rotated by the label portion of the rotating record. A stationary support provides a location for an additional disc. The light source and lens are so mounted that light rays from the light source are projected downwardly through or onto one or more of the transparent or reflective rotating discs, then upwardly through the lens for projection upon the viewing surface.
Inventors
- 👤 Eugene Johnson, III
- 👤 Dane J. Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:35
CPC Classifications
G; G09; G09F; G09F19/00; G09F19/12; G09F19/18; G03; G03B; G03B21/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
165 words
A light reflective projection system which is capable of producing high resolution, colored, dynamic images, comprising: a support base member having means for rotating at least a portion thereof about a vertical axis; a light source and a lens mounted above said support base, said light source and said lens being positioned at equal angles on opposite sides of the vertical axis of said rotatable base portion; a plurality of stepping wheel devices mounted in a common horizontal plane above said support base, each stepping wheel device including a rotatable, upright drive wheel which rests upon the rotatable base portion and at least one step-down wheel mounted interiorly of each drive wheel, each step-down wheel having a smaller diameter than the respective drive wheel, and at least one disc supported in a horizontal position by said stepping wheel devices so that rotation of said rotatable base portion causes rotation of said drive wheels which, in turn, causes rotation of said disc about its vertical axis.
Claim 2
Dependent Claim
165 words
A light reflective projection system which is capable of producing high resolution, colored, dynamic images, comprising: a support base member having means for rotating at least a portion thereof about a vertical axis; a light source and a lens mounted above said support base, said light source and said lens being positioned at equal angles on opposite sides of the vertical axis of said rotatable base portion; a plurality of stepping wheel devices mounted in a common horizontal plane above said support base, each stepping wheel device including a rotatable, upright drive wheel which rests upon the rotatable base portion and at least one step-down wheel mounted interiorly of each drive wheel, each step-down wheel having a smaller diameter than the respective drive wheel, and at least one disc supported in a horizontal position by said stepping wheel devices so that rotation of said rotatable base portion causes rotation of said drive wheels which, in turn, causes rotation of said disc about its vertical axis.
Claim 3
Dependent Claim
20 words
The projection system of claim 1 wherein the rotatable portion of said base comprises the turntable of a record player.
Claim 4
Dependent Claim
27 words
The projection system of claim 2 wherein a record is carried by said turntable and wherein the drive wheels contact said record within the record label area.
Claim 5
Dependent Claim
45 words
The projection system of claim 1 wherein a pedestal base member with horizontal upper surface for receiving a disc is mounted on the rotatable base portion for rotation therewith, said pedestal base extending upwardly and having a common vertical axis with the rotatable base portion.
Claim 6
Dependent Claim
40 words
The projection system of claim 1 wherein said lens and said light source are located at respective angles of from about 5 degrees to about 60 degrees relative to the axis of rotation of the rotatable portion of said base.
Claim 7
Dependent Claim
27 words
The projection system of claim 1, further including means for supporting a disc in a stationary position above the axis of rotation of said rotatable base portion.
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) | 1982-10-22 | 1983-04-23 | 1983-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-22 | 1987-04-23 | 1987-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-22 | 1991-04-23 | 1991-10-23 | $7700.00 | Window Closed / Lapsed |