US PATENT SUBCLASS 172 / 48
.~ Plural driven tools

Current as of: June, 1999
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172 /   HD   EARTH WORKING

35  DF  WITH DRIVE MEANS FOR TOOL OR CLEANER {37}
48.~ Plural driven tools {6}
49  DF  .~.~> Contiguous cooperating or intermeshing rotary ground engaging tools {1}
50  DF  .~.~> Diverse tools {3}
54.5  DF  .~.~> Tool reciprocates or oscillates within a generally horizontal plane
55  DF  .~.~> Plural groups of disks
56  DF  .~.~> Staggered tools
57  DF  .~.~> Laterally spaced tools {3}

DEFINITION

Classification: 172/48

Plural driven tools:

(under subclass 35) Apparatus employing a plurality of separate earth working elements or groups of elements, each of which is driven so as to move with respect to one another during operation, and each of which is connected, through a linkage, to a drive means that drives the tool in a predetermined manner.

(1) Note. Included herein are patents wherein the tools are driven by a common driving element such as a drive chain or camshaft, and those wherein the tools are mounted on shafts connected to individual gears of a row of intermeshing gears.

SEE OR SEARCH THIS CLASS, SUBCLASS:

84+, for plural earth working elements which are alternately raised from and lowered into the ground in a "hoeing" or "spading" type movement.

91+, for an earth working implement comprising a carrier means such as a chain or wheel which forms the support for earth-engaging teeth and has an orbital movement while the teeth supported by it also move with respect to it.

96+, for a tool having multiple earth-engaging elements (e.g., elongated teeth) which are mounted on a single support and (a) are pivoted freely thereon, (b) have a spring connection thereto, or (c) consist of spring elements so that they are movable with respect to each other, but not in a

predetermined manner.

100, for an earth working implement in which a plurality of teeth or like earth working parts or portions are mounted on a flexible or articulated member which is driven in a closed path or circuit relative to a frame upon which said teeth, parts, or portions and member are supported. SEE OR SEARCH CLASS

173, Tool Driving or Impacting,

52, and see the search notes therein for a single advance causing or controlling means or manipulating means for plural tool drives.