US PATENT SUBCLASS 352 / 166
CAMERA AND/OR PROJECTOR DRIVE MECHANISMS

Current as of: June, 1999
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352 /   HD   OPTICS: MOTION PICTURES

166CAMERA AND/OR PROJECTOR DRIVE MECHANISMS {14}
167  DF  .~> With illumination control responsive to drive speed
168  DF  .~> Having plural or interchangeable drives
169  DF  .~> With single frame operation
170  DF  .~> With indicating means {2}
173  DF  .~> With reverse feed
174  DF  .~> With starting and/or stopping means {3}
180  DF  .~> With speed regulation or selection {2}
183  DF  .~> With feeding belt film engagement
184  DF  .~> With continuous feed and intermittent film arresting means
185  DF  .~> With film beater
186  DF  .~> With reciprocating continuously driven carrier engaging sprocket
187  DF  .~> With intermittently driven carrier-engaging sprocket {3}
191  DF  .~> With film engaging claws reciprocally driven to engage film {2}
197  DF  .~> With supporting structure

DEFINITION

Classification: 352/166

(under the class definition) Subject matter including a source of motive power and/or means to couple the source to the driven elements such as the shutter or picture strip in

the motion picture device.

(1) Note. The subject matter included in this and indented subclasses includes the source of motive power (e.g., spring or electric motors) and the driving connections to a specific motion picture element (e.g., an intermittent motion picture film drive) as well as the motor control devices which control the drive mechanism for specific motion picture applications. To be classified here there must be a plurality of motion picture elements recited with cooperation between the elements or include structural details of a single element of specific motion picture application (e.g., a film gate).

SEE OR SEARCH THIS CLASS, SUBCLASS:

12+, for apparatus to start one drive means in a predetermined relationship to the stopping of a second drive means used in sound accompaniment.

SEE OR SEARCH CLASS

74, Machine Element or Mechanism, 640+, for gearing means to transmit motion from motors to a specific load.

185, Motors: Spring, Weight, or Animal Powered,

37+, for spring motors generally.

226, Advancing Material of Indeterminate Length, generally for the feed of material of indefinite length including motion picture film.

242, Winding, Tensioning, or Guiding,

349+, for a particular drive for unwinding and rewinding a machine convertible information carrier; e.g., an image film.

310, Electrical Generator or Motor Structure,

80+, for electric motors and associated gearing for motion conversion purposes.

318, Electricity: Motive Power Systems,

9+, for electric motor control systems and associated gearing driving a particular element.