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EP0460713A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Improved stereoscopic viewer

Assignee: Tyco Toys Inc
•
Filing: 1987-05-18
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Granted: —
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Expires: 2007-05-18
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Abstract

Abstract A stereoscopic viewer (10) comprises a housing (32) having an advancing plate (90) for supporting and advancing a disc-shaped carrying card (14) for stereo images which are viewed through a pair of eyepieces (16R, 16L) in the housing. A trigger (156) oscillates the plate to incrementally rotate the card and position sequential pairs of images in the viewing axis of the eyepieces. The trigger includes a depressible actuator vertically projecting through a top surface (80) of the viewer, as it is held for viewing. The trigger comprises a cylindrical actuator portion (158) projecting through the top surface of the housing, and a leg (162) depending from the actuator portion which engages the advancing plate (90) to oscillate it as the trigger is depressed. As the plate oscillates in a forward direction, a flat front face (146) of a pawl (144) on the plate engages a radial slot (26) on the disc to rotate it. The pawl is slightly inclined in the direction of advance of the card to help hold the card flat against the plate during incremental advancement. A rear element (36) of the viewer is completely translucent to allow a greater amount of light into the interior of the housing and permit viewing of the mechanical actuation of the viewer.

Inventors

  • 👤 Alan G. Lewis
  • 👤 Martin Thaler
  • 👤 David M. Gresham

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-05 15:25
CPC Classifications
A; A63; A63J; A63J15/00; G; G02; G02B; G02B30/00; G02B30/20; G02B30/34; G03; G03B; G03B23/00; G03B23/08; G03B23/10; G03B23/105

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 129 words
A stereoscopic viewer for a plurality of discrete film images (12) equally spaced peripherally around the edge of a disc-shaped carrying card (14), said film images (12) being arranged in pairs of images which provide a stereoscopic effect when said pairs are viewed together, said card (12) having a plurality of peripherally spaced openings (24) through which images are viewed, and a plurality of equally spaced radial slots (26), said viewer comprising a housing (32) having retaining means for retaining said card (14) in a viewing plane for rotation of said card (14) about its axis, said viewer being characterised by said housing (32) including a light transmitting face (46) which is parallel to and spaced from said viewing plane and which is translucent substantially across its entire area.
Claim 2
Dependent Claim 28 words
The stereoscopic viewer of claim 1, wherein said housing (32) includes a bottom surface and a top surface, said bottom surface (48, 80) having a substantially semicircular shape.
Claim 3
Dependent Claim 59 words
The stereoscopic viewer of claim 1, further comprising: a second face opposing said light transmitting face, said viewing plane being between said light transmitting face (46) and said second face (78); and eyepiece means (16L, 16R) through said second face (78) for viewing a pair of discrete images on said card (14) aligned with said eyepiece means (16L, 16R).
Claim 4
Dependent Claim 64 words
The stereoscopic viewer of claim 3, wherein said housing (32) includes a bottom surface and a top surface, said top surface comprising a first flat portion above a first of said eyepieces (16L, 16R), and a second flat portion above a second of said eyepieces, said second portion being spaced above said first portion and defining the top of a finger grip portion (84).
Claim 5
Dependent Claim 41 words
The stereoscopic viewer of claim 4, wherein said housing (32) defines a rectangular channel between said first and second portions intercepting the location of a top of said card so that the top portion of said card (14) can be seen.
Claim 6
Dependent Claim 50 words
The stereoscopic viewer of claim 4 or 5, further comprising trigger means (156) for rotating said card to position another pair of images (12) in alignment with said eyepiece means (16L, 16R), said trigger means including a depressible actuator (158) projecting upwardly through said second portion of said top surface.
Claim 7
Dependent Claim 21 words
The stereoscopic viewer of claim 4, 5 or 6, wherein said housing bottom surface (48, 80) has a substantially semicircular shape.
Claim 8
Dependent Claim 48 words
The stereoscopic viewer of any one of claims 4 to 7, wherein said finger grip portion (84) comprises a substantially triangular opaque projection above said light transmitting face, and a substantially rectangular opaque projection above said opaque face, said triangular and rectangular projections meeting along a joining plane.

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