US PATENT SUBCLASS 173 / 90
IMPACTING DEVICES (E.G., HAMMERS)

Current as of: June, 1999
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173 /   HD   TOOL DRIVING OR IMPACTING

90IMPACTING DEVICES (E.G., HAMMERS) {19}
91  DF  .~> Selective axial direction of impact
92  DF  .~> With means to grip and release tool in timed relation to impact
93  DF  .~> With anvil arranged to transmit torsional impact to tool {2}
94  DF  .~> Hammer head moves in arcuate path or rotates {3}
101  DF  .~> Plural relatively moved hammer heads {2}
104  DF  .~> With means for rotating tool {2}
112  DF  .~> With means to cause or control advance of hammer head {1}
114  DF  .~> With means to reciprocate tool
115  DF  .~> Length of cyclic travel of hammer head selectively adjustable
200  DF  .~> Hammer head driven by pulsating fluid pressure {1}
117  DF  .~> Hammer head driven by electric motor
118  DF  .~> Spring bodily cyclically moved with hammer head
202  DF  .~> Hammer head driven by spring {4}
122  DF  .~> Hammer head driven by relatively moving motion transmitting element {2}
125  DF  .~> Hammer head constitutes or fixed to drive motor cylinder
126  DF  .~> Hammer head comprises plural parts or diverse materials {1}
128  DF  .~> Impact transmitting anvil {5}
206  DF  .~> Hammer head constitutes piston of drive motor {4}
210  DF  .~> With impact cushioning means {2}

DEFINITION

Classification: 173/90

(under the class definition) Apparatus comprising a mass of material (i.e., hammer head) which is specifically intended to deliver a blow to a tool.

(1) Note. Included under this definition are means to transmit an impact from a hammer to a tool (e.g., an anvil).

SEE OR SEARCH THIS CLASS, SUBCLASS:

48, for a drive adjustable to completely change kind of drive, in which the drive is adjustable to function as an impacting device.

51, for power paths to plural tools from single drive, in which at least one of the tools is driven by an impacting device.

53+, for a hammer head or tool shaft reciprocated by gripping means which release or yield to permit advance.

78, for a cleansing fluid passage through the hammer head of an impacting device. 81+, for means to control advance and cyclically reciprocate

a cable operated hammer or tool.

SEE OR SEARCH CLASS

7, Compound Tools,

143+, for hand type hammers combined with other tools.

72, Metal Deforming,

435+, for a "drop-hammer" driving means in a forging press.

74, Machine Element or Mechanism, appropriate subclass for a mechanical movement or gearing for operating a hammer head.

81, Tools,

463+, for tools combined with impact delivering means, and subclasses 20+ for hand type hammers.

104, Railways,

10+, for track laying tampers, and subclass 17.1 for track laying spike drivers. 175, Boring or Penetrating the Earth,

135, for an above ground impacting device combined with a specifically claimed earth boring or penetrating tool and subclasses 293+ for hammer or impact means located below ground in an earth bore, either combined with a specific earth boring feature or comprising a means forming a lost motion connection in a shaft or cable string, such means comprising relatively movable members which are provided with faces that impact each other to generate a "jar". See the class definition of Class 175, sections I, C and IV B.

227, Elongated-Member-Driving Apparatus, appropriate subclass for a driver, e.g., hammer, having a member, e.g., nail, staple, etc., engaging feature.

254, Implements or Apparatus for Applying Pushing or Pulling Force,

18+, for a nail-extractor type puller combined with a hammer head structure.

299, Mining or In Situ Disintegration of Hard Material,

69+, for a hard material disintegrating machine operating a specifically claimed percussive type cutter.

404, Road Structure, Process, or Apparatus

133.05+, for tamping means and see notes thereunder.