US PATENT SUBCLASS 414 / 706
.~.~.~ During swinging to stabilize pitch

Current as of: June, 1999
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414 /   HD   MATERIAL OR ARTICLE HANDLING

680  DF  VERTICALLY SWINGING LOAD SUPPORT {9}
685  DF  .~ Shovel or fork type {8}
697  DF  .~.~ Tilting {11}
706.~.~.~ During swinging to stabilize pitch {4}
707  DF  .~.~.~.~> On link mounted swinging support
708  DF  .~.~.~.~> By hydraulic compensation
709  DF  .~.~.~.~> By tensioned flexible connector
710  DF  .~.~.~.~> By linkage pivoting on base support {2}

DEFINITION

Classification: 414/706

During swinging to stabilize pitch:

(under subclass 697) Apparatus including means requiring said carrier to keep or tend to keep a predetermined angular position relative to horizontal, while said swingable member pivots, by tilting the carrier relative to the swingable member.

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700, for such apparatus which have also a control for the tilting means which acts in response to a sensing of departure of the load engager from a predetermined attitude to return it.

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182, Fire Escape, Ladder, or Scaffold,

2.1+, for structures supported in spaced relation to the earth's surface for supporting a workman in which a platform is maintained level on an angularly movable support.