US PATENT SUBCLASS 433 / 154
.~.~.~ Three or more relatively movable coacting surfaces

Current as of: June, 1999
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433 /   HD   DENTISTRY

25  DF  APPARATUS {20}
141  DF  .~ Hand manipulatable implement {10}
153  DF  .~.~ Having relatively movable work engaging surfaces {5}
154.~.~.~ Three or more relatively movable coacting surfaces {1}
155  DF  .~.~.~.~> Work accommodating slot or opening through surface (e.g., matrix clamp)

DEFINITION

Classification: 433/154

Three or more relatively movable coacting surfaces:

(under subclass 153) Apparatus including three members, each having a work contacting face and wherein the structure connecting the members permits each of the work contacting faces to be displaced relative to the work contacting faces.

(1) Note. As an example, tooth or pin extractors having two clamping jaws for engaging a tooth or pin and a pivoted fulcrum or other member for engaging an adjacent area whereby a force is exerted on the clamping jaws, are found in this subclass.

SEE OR SEARCH CLASS

81, Tools,

303, for pliers and the like having three or more jaws.