US PATENT SUBCLASS 254 / 293
.~.~.~ Each drum having plural, distinct drive sources or discrete drive trains

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

Internet Version by PATENTEC © 1999      Terms of Use


254 /   HD   IMPLEMENTS OR APPARATUS FOR APPLYING PUSHING OR PULLING FORCE

264  DF  APPARATUS FOR HAULING OR HOISTING LOAD, INCLUDING DRIVEN DEVICE WHICH CONTACTS AND PULLS ON CABLE {4}
266  DF  .~ Device includes rotatably driven, cable contacting drum {34}
278  DF  .~.~ Plural drums or drum with plural distinct sections {7}
293.~.~.~ Each drum having plural, distinct drive sources or discrete drive trains

DEFINITION

Classification: 254/293

Each drum having plural, distinct drive sources or discrete drive trains:

(under subclass 278) Apparatus wherein the drive for each drum includes either (a) two or more distinct drive sources,

(e.g., a motor and a hand-operated crank, two spaced hand-operated cranks), or (b) two or more discrete drive trains, (i.e., they do not share either a common drive source or a common power-transmitting component) whose operations do not depend directly on one another.