US PATENT SUBCLASS 74 / 828
ALTERNATING-MOTION DRIVEN DEVICE WITH MEANS DURING OPERATION TO ADJUST STROKE

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

Internet Version by PATENTEC © 1999      Terms of Use


74 /   HD   MACHINE ELEMENT OR MECHANISM

828ALTERNATING-MOTION DRIVEN DEVICE WITH MEANS DURING OPERATION TO ADJUST STROKE {2}
829  DF  .~> Constant length stroke with means to displace end limits {1}
831  DF  .~> Stroke adjustable to zero and/or reversible in phasing {6}

DEFINITION

Classification: 74/828

(under the class definition) Mechanism comprising a reciprocating or oscillating-motion driven device provided with means to adjust the length and/or position of the stroke of the driven device while the mechanism continues in operation.

(1) Note. This and the indented subclasses were established (1963) on the basis of patents originating in the art of expansible chamber motors. Similar organizations of mechanical movements or gearing may be found in this class in subclasses below providing for some aspect of the total organization provided for in this group of subclasses. No

attempt has been made to screen the subclasses below to remove such art.

(2) Note. This and indented subclasses may include either gearing or mechanical movement mechanisms or combination gearing and mechanical movement mechanisms.

SEE OR SEARCH THIS CLASS, SUBCLASS:

20+, for parts having a mechanical movement but including a total organization as provided for in this group of subclasses, see (1) Note.

SEE OR SEARCH CLASS 475, Planetary Gear Transmission Systems or Components,

14+, for planetary gearing used to provide a cyclical or intermittent drive.