US PATENT SUBCLASS 52 / 720.1
SHAFT (I.E., ELONGATED RIGID STRUCTURE)

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

720.1SHAFT (I.E., ELONGATED RIGID STRUCTURE) {15}
720.2  DF  .~> Baluster type (e.g., newel post, spindle, etc.)
720.3  DF  .~> Security bar
721.1  DF  .~> Stone-like component (e.g., concrete, etc.) {2}
726.1  DF  .~> End-to-end connected sections {2}
729.1  DF  .~> I-beam {2}
730.1  DF  .~> Longitudinally related striplike sections {5}
733.1  DF  .~> Ceiling hanger
733.2  DF  .~> Stud, furring-strip, lath-strip, etc. {2}
734.1  DF  .~> For closure or closure portal {1}
735.1  DF  .~> For vehicle
736.1  DF  .~> Upright (e.g., post, pole, etc.) {2}
737.1  DF  .~> Girder, column, etc. {4}
738.1  DF  .~> Having shell-like outer layer
739.1  DF  .~> Strut
740.1  DF  .~> Tension member (e.g., re-bar) {5}

DEFINITION

Classification: 52/720.1

SHAFT (I.E., ELONGATED RIGID STRUCTURE):

(under the class definition) Structure including a rigid member having a limited closed periphery and which is greatly elongated relative to any lateral dimension.

SEE OR SEARCH THIS CLASS, SUBCLASS:

40, for shaft supporting a disparate article.

103+, for a marker or monument.

108, for a reversible flexible and rigid strip-like unit.

146+, for a vertical structure with diagonal brace or guy extending to its base.

155+, for a shaft having an earth piercing feature.

170, for a shaft reinforcement adjacent the earth's surface. 223.1+, for a pre-compressed (i.e., prestressed structure).

296+, for a footing with a supported shaft.

300+, for a vertical structure with terminal cap or bearing plate.

364+, for a composite member with means receiving a penetrating fastener.

489.1+, for a shaft with a separable retainer for a facer panel.

633+, for an openwork structure including a tower or mast.

712+, for a sheet or wire tie.

SEE OR SEARCH CLASS

256, Fences, appropriate subclass for a post with means for retaining a fence, wire, or rail.

280, Land Vehicles,

781+, for land vehicle frames.

405, Hydraulic and Earth Engineering, 231+, for elongated columnar structures (e.g., piles, piers,

etc.) driven or otherwise placed in the earth for the purpose of providing a stable base for a superstructure.

428, Stock Material or Miscellaneous Articles,

364+, for a residual rod-like material not specialized to use as a component of an in situ erected building (e.g., poles, posts, columns, beams, reinforcing rods) and see the notes in that subclass for other rod-like or strand-like structures.