.~ With light-emitting, electrical, magnetic, or rotatable inertial means or having boundary-detector activating means
DEFINITION
Classification: 473/570
With light-emitting, electrical, magnetic, or rotatable inertial means or having boundary-detector activating means:
(under subclass 569) Subject matter wherein the projectile (a) includes a means for producing and giving off electromagnetic radiation (e.g., by incandescence, luminescence, etc.) capable of being visually perceived by the human eye;(b) includes an electrical circuit or component; (c) is or includes a means (i.e., a magnet or electromagnet) having or for producing the force field effects of a magnet; (d) has a body rotatably mounted therein or thereto which, when set in motion, produces a gyroscopic
effect upon the projectile whenever the projectile is in motion (usually in free flight through the air), such gyroscopic effect being usually for the purpose of maintaining, or resisting forces attempting to change, the projectile's axis of rotation while it is in translational motion; or(e) includes a means for causing, whenever the projectile is in motion during play or practice of a game upon or within a game playing area, actuation of a means for detecting the location of the projectile relative to (1) a peripheral boundary of the playing area or (2) a structure (e.g., a net, etc.) or a visually or otherwise sensory distinct means which breaks the playing area into compartments, subareas, or sections.
(1) Note. Usually, but not necessarily so limited, a projectile having a boundary-detector activating means is a tennis ball having an electrically conductive surface which, upon striking a boundary of a tennis court, completes an electrical circuit of the boundary detector so as to activate it.
(2) Note. A target is not considered to be a peripheral boundary structure or a structure or a visually or otherwise sensory distinct means which breaks the playing field or court into compartments, subareas, or sections, even though such a target may be located in, on, or form a part thereof. Accordingly, see the appropriate target subclasses for a detector means for detecting the location of a game element or user relative to a target.
SEE OR SEARCH THIS CLASS, SUBCLASS:
467, for a boundary detector in combination with at least one other game component (e.g., in combination with a tennis court, a net portion thereof, or a ball for use therewith, etc.).
SEE OR SEARCH CLASS
273, Amusement Devices: Games, 348.3, for a target having magnetized material for adherence thereto of a projectile having magnetized or magnetically susceptible material or for a target made from a material adapted for adherence thereto of a projectile having magnetized material. Such a projectile combined with such a target will be found in subclass 348.3.
