US PATENT SUBCLASS 417 / 328
.~ Spring or weight motor


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

Internet Version by PATENTEC © 1999      Terms of Use



417 /   HD   PUMPS

321  DF  MOTOR DRIVEN {32}
328.~ Spring or weight motor {1}
329  DF  .~.~> Fluid weight (e.g., gravity vessel)


DEFINITION

Classification: 417/328

(under subclass 321) Apparatus in which the motor is of the type which includes a movable member which is motivated by either (1) the force of gravity or (2) a spring.

(1) Note. To fall within the scope of this definition the motivating force produced by the spring or gravitational force must be controllable or variable in intensity or direction to cause operation of the movable member, i.e., a weight or spring for exerting a continuous unidirectional

biasing force is excluded.