US PATENT SUBCLASS 52 / 677
.~ Spacer-positioner; e.g., rebar chair


Current as of: June, 1999
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52 /   HD   STATIC STRUCTURES (E.G., BUILDINGS)

633  DF  OPENWORK; E.G., TRUSS, TRELLIS, GRILLE, SCREEN, FRAME, OR REBAR CHAIR {12}
677.~ Spacer-positioner; e.g., rebar chair {5}
678  DF  .~.~> Adjustable support
679  DF  .~.~> Penetrator with limiting stop {2}
684  DF  .~.~> Support member retaining means movable or deformable to final position {1}
686  DF  .~.~> Crossed supported member type
687  DF  .~.~> Plural feet or seat {2}


DEFINITION

Classification: 52/677

(under subclass 633) Structure including a distance defining

means which (1) spaces a member from a surface, usually that of a form used to shape the plastic-to-rigid, water-settable material or (2) which spaces one elongated reinforcing member from another, e.g., reinforcing rods from each other.

SEE OR SEARCH THIS CLASS, SUBCLASS:

344+, for a settable material backer fixed to a furring, joist or stud, including means spacing the backer from its support.

649.7, for a cage type member with spacer positioner.

SEE OR SEARCH CLASS

404, Road Structure, Process, or Apparatus, 135, for road reinforcement with a road chair and subclass 136 for road chair structure, per se.