US PATENT SUBCLASS 212 / 89
.~.~.~ Hook-lowering

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


212 /   HD   TRAVERSING HOISTS

71  DF  OVERHEAD {7}
76  DF  .~ Cable {8}
87  DF  .~.~ Draft-rope, hoist-rope traverse {5}
89.~.~.~ Hook-lowering

DEFINITION

Classification: 212/89

Hook lowering:

(under subclass 87) Hoist-rope traverse devices of the above type in which there is some means other than the weight of the parts themselves for lowering the end of the hoisting rope or for lowering the fall-block at the loading or unloading point.

SEE OR SEARCH THIS CLASS, SUBCLASS:

96, for similar devices in which the trolley is moved in both directions by a cable other than the hoisting cable.

99, for similar devices comprising a traveling drum, an endless cable for rotating the drum, and a clutch between the cable and drum.