US PATENT SUBCLASS 472 / 57
ILLUSION OR STAGE DEVICE

Current as of: June, 1999
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472 /   HD   AMUSEMENT DEVICES

57ILLUSION OR STAGE DEVICE {17}
58  DF  .~> Alternative scenes provided by reflection from and transmission through transparent mirror
59  DF  .~> Person experiences illusion of being in motion (e.g., travel simulation, etc.) {1}
61  DF  .~> Illusion caused by video, projected picture, or special light effect
62  DF  .~> Maze or labyrinth
63  DF  .~> Illusion caused by mirror
64  DF  .~> Illusion caused by sound imitation or effect
65  DF  .~> Illusion caused by visual imitation of event occurring in nature (e.g., rain, snow, fire, etc.)
66  DF  .~> Pyrotechnic display
67  DF  .~> Simulation of self-propelled object in liquid filled container (e.g., Cartesian diver)
68  DF  .~> Illusion caused by apparent levitation
69  DF  .~> Illusion caused by apparent penetration or severance
70  DF  .~> Illusion caused by simulation of or attachment to human body part
71  DF  .~> Illusion caused by apparent appearance or disappearance
72  DF  .~> Illusion caused by apparent change in color, printed matter, surface texture, or rigidity
73  DF  .~> Card trick illusion
74  DF  .~> Illusion caused by abnormal interior building structure appearing normal
75  DF  .~> Stage apparatus or setting {4}

DEFINITION

Classification: 472/57

ILLUSION OR STAGE DEVICE:

(under the class definition) Amusement device which is either (a) intended to deceive a person into believing, either by giving the person a physical sensation or a visual impression, that an event or an occurrence is real or is actually occurring when, in reality, the event or occurrence is not real or actually occurring; or (b) intended to be used on a means forming a performing area (i.e., on the stage of a theater) in order to facilitate the presentation of a theatrical performance.

(1) Note. Since an amusement device intended to cause an illusion in the mind of a user or viewer of the device may or may not be intended to be used on a theatrical stage, a document directed to a specific illusion-causing device provided for in any of subclasses 58 through 74 indented hereunder will be found in one of subclasses 58 through 74 regardless of whether or not the illusion device is intended to be used on the stage of a theater. On the other hand, subclasses 75 through 84 indented hereunder will take a document directed to an amusement device intended to be used on the stage of a theater regardless of whether or not the device is also intended to cause an illusion in the mind of a person and provided the specific illusion caused by the device has not been provided for in any one of subclasses 58 through 74.

SEE OR SEARCH CLASS

2, Apparel, appropriate subclasses for a costume or mask intended to be worn by an actor, particularly

206, for a mask providing a false face for the wearer thereof.

40, Card, Picture, or Sign Exhibiting, appropriate subclasses for a sign, exhibit, or other display device of that class which may also be amusing in nature to perform its function of attracting and holding the attention of an observer; especially

409+, for an attention attracting display device having free article movement (e.g., a snowfall simulator, etc.,); subclasses 411+ for a three-dimensional movable figure display device; subclasses 421+ for a two-dimensional movable figure display device; subclasses 427+ for an attention attracting display device having special effects as, for example, a display device which includes means to convey to the observer an illusion of movement of an object such as

falling snow or water or flickering fire light; subclasses 446+ for a changing exhibitor type of display device; and subclasses 538+ for a dummy display device for attracting and holding the attention of a viewer in the form of an imitation article including a figure. 52, Static Structures (e.g., Buildings), particularly

6+, for a building structure or physical arrangement relating to a means forming the locus of a center of attraction, e.g., a theatrical stage or a means forming a performing area of a stadium, auditorium, or studio including a movable theatrical stage. Also see the Search Class notes under subclass 75 indented hereunder.

104, Railways,

82, 86 for an amusement railway device involving an illusion.

352, Optics: Motion Pictures,

85+, for an apparatus for producing a special illusionary effect for motion pictures.