US PATENT SUBCLASS 234 / 82
.~.~ Senser controls effectiveness of actuating force to selected tool pair only

Current as of: June, 1999
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234 /   HD   SELECTIVE CUTTING (E.G., PUNCHING)

59  DF  WITH MEANS TO INITIATE TOOL SELECTION BY SENSING PATTERN INDICIA OR CONFIGURED MACHINE ELEMENT {11}
79  DF  .~ With means to feed pattern or pattern sensing means {5}
82.~.~ Senser controls effectiveness of actuating force to selected tool pair only {1}
83  DF  .~.~.~> Senser actuates tool

DEFINITION

Classification: 234/82

(under subclass 79) Device wherein the sensing means directly initiates or permits the application of energy to a selected complete individual tool-actuating power train.

(1) Note. A device classifiable in this subclass is termed "direct-acting" in that the senser, although it does not transmit tool-actuating force, controls and determines the application of actuating force from a power source to a tool, without the use of an interposer or other selecting means.

(2) Note. For example, the pattern-senser may comprise a contact brush which completes an energizing circuit for a tool-driving magnet upon detection of a hole in the pattern; or the senser, upon detection of a pattern indicium, may release a latch or restraining device for a yieldably-biased tool, freeing the latter for actuation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

106+, for a device effective to cause the actuation of a plurality of selected tools, without interposers (coded direct punching).

117+, for means to select a single tool by moving an element of the tool drive train into power-transmitting relationship with a drive means.