US PATENT SUBCLASS 175 / 263
CUTTER ELEMENT LATERALLY SHIFTABLE BELOW GROUND (E.G., EXPANSIBLE)

Current as of: June, 1999
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175 /   HD   BORING OR PENETRATING THE EARTH

263CUTTER ELEMENT LATERALLY SHIFTABLE BELOW GROUND (E.G., EXPANSIBLE) {13}
264  DF  .~> With separable means holding tool collapsed above ground only
265  DF  .~> Plural cutter elements longitudinally relative movable into transverse alignment
266  DF  .~> Plural selectively shiftable cutter elements
267  DF  .~> Cutter element shifted by fluid pressure {2}
270  DF  .~> Cutter element shifted by dropped element
271  DF  .~> With latch operated by fluid pressure or dropped element
272  DF  .~> Cutter element shifted by relatively longitudinally movable threaded elements
273  DF  .~> Cutter element shifted by cam or gear axially rotatable relative to shaft
274  DF  .~> With shifting mechanism spring biased to operative position {3}
284  DF  .~> Cutter element shifted by longitudinally relatively movable parts {2}
290  DF  .~> With latch
291  DF  .~> Spring biased
292  DF  .~> Pivoted about substantially longitudinal axis

DEFINITION

Classification: 175/263

(under the class definition) Apparatus comprising a cutter element carried on a shaft or bit head by means which permits or causes the cutter element to move relative to the shaft or

bit head in a direction transverse to the bore axis while the shaft or bit head and cutter element are below ground.

(1) Note. When the laterally shiftable cutter element comprises a rolling cutter bit element as defined in subclass 331 the lateral shifting movement of the cutter element for classification in this subclass must consist of a movement other than that due to the normal cycle of rotation of the rolling cutter element about its rolling axis. Thus a rolling cutter element which normally rolls about an axis and partakes of a cyclic eccentric motion with a lateral component is not included under this definition but will be found below in subclass 343 for example.

SEE OR SEARCH THIS CLASS, SUBCLASS:

77, for side wall tool fed laterally without rotation from inaccessible hole.

78, for tools which are fed laterally to bore from a recess in a carrier inserted in an inaccessible hole.

90, for tool elements mounted on a continuously driven flexible or articulated endless member which is carried on a support which is swingable or laterally movable. 202, for devices having above ground means for relatively moving below ground tool elements.

256, for tools combined with jointed shaft having a means which normally biases the tool laterally of the bore but which is releasable to permit operation without the bias.

SEE OR SEARCH CLASS

52, Static Structures (e.g., Buildings),

155+, for a piercing or expanding earth anchor.

82, Turning,

1.2, for expanding reverse taper wood augers.

166, Wells,

55+, for cutters for earth embedded well pipe, subclasses 170+ and particularly subclass 174 for well pipe cleaners for expansible well anchors or casing.

294, Handling: Hand and Hoist-Line Implements,

93+, for an expanding grapple.

411, Expanded, Threaded, Driven Headed, Tool-Deformed, or Locked-Threaded Fastener, 29+, for expansible anchors provided with cutting teeth for

the formation of the bore in which the anchor is to be expanded.

451, Abrading,

463+, for expansible abrading tool.