US PATENT SUBCLASS 74 / 473.1
.~.~ Transmission control

Current as of: June, 1999
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74 /   HD   MACHINE ELEMENT OR MECHANISM

469  DF  CONTROL LEVER AND LINKAGE SYSTEMS {8}
471 R  DF  .~ Multiple controlled elements {3}
473.1.~.~ Transmission control {11}
473.11  DF  .~.~.~> Fluid actuator
473.12  DF  .~.~.~> Electrical actuator
473.13  DF  .~.~.~> Occupant propelled vehicle {1}
473.15  DF  .~.~.~> Transmission controlled by flexible cable
473.16  DF  .~.~.~> Foot operated {1}
473.18  DF  .~.~.~> Control convertible between automatic and manual operation
473.19  DF  .~.~.~> Control of plural mechanisms (e.g., control of transmission and control of 4 - wheel drive) {1}
473.21  DF  .~.~.~> Restriction of shift, gear selection, or gear engagement {5}
473.29  DF  .~.~.~> having vibration damper
473.3  DF  .~.~.~> Manually operated selector (e.g., remotely controlled device, lever, push button, rotary dial, etc.) {2}
473.36  DF  .~.~.~> Particular element (e.g., shift fork, template, etc.) {1}

DEFINITION

Classification: 74/473.1

Transmission control:

(under subclass 471) Multiple controlled elements for manually controlling an assembly of gears or associated parts for the transfer of power from a prime mover to a driving or propelling means.

(1) Note. When the control system is claimed in combination with the transmission, the patent is classified with the transmission. See the appropriate transmission class.

SEE OR SEARCH THIS CLASS, SUBCLASS:

25+, for mechanical movements for converting rotary motion to or from reciprocating or oscillating motion.

334, for preselector type combined clutch and gear, interchangeably locked gearing.

337.5, for a cam-operated transmission control.

365, for an electrical transmission control system.

470, for resilient joints in a lever system. SEE OR SEARCH CLASS

364, Data Processing: Vehicle, Navigation, and Relative Location,

51+, for a computer controlled transmission.

477, Interrelated Power Delivery Controls, Including Engine

Control,

34+, for transmission control and 125+ for a means to prohibit the changing of the speed ratio of the gear transmission when such change may harm the engine or gear transmission.