US PATENT SUBCLASS 280 / 446.1
.~.~ Condition responsive connections

Current as of: June, 1999
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280 /   HD   LAND VEHICLES

29  DF  WHEELED {21}
400  DF  .~ Articulated vehicle {30}
446.1.~.~ Condition responsive connections {4}
447  DF  .~.~.~> Freely laterally shiftable
448  DF  .~.~.~> Reversal responsive articulation modification
449  DF  .~.~.~> Overload release {3}
455.1  DF  .~.~.~> Antisway hitch

DEFINITION

Classification: 280/446.1

Condition responsive connections:

(under subclass 400) Vehicles in which there is a connection or draft relationship between the vehicles which is modified in response to a change in draft condition (e.g., increased load or stress reversal) or articulative relationship of the vehicles.

(1) Note. A connection or draft relationship between two vehicles is modified if, for example, the type of articulation is changed (e.g., from pivoted to rigid connection); or the location of the point of draft

application (either real or virtual) to either vehicle is changed; or the distance between the vehicles is changed or one vehicle is positively canted with respect to the other as a result of articulative movement of the vehicles.

SEE OR SEARCH THIS CLASS, SUBCLASS:

439+, and 483+, for resilient connections between articulated vehicles.

SEE OR SEARCH CLASS

172, Earth Working,

7+, for earth working apparatus with an automatically controlled power means which responds to changes in draft force between a trailing implement and a tractor, and subclass 239 for an earth working implement with a draft connection to a tractor, said draft connection comprising a linkage which responds to change in draft force.