US PATENT SUBCLASS 188 / 72.8
.~.~.~.~ Screw or helical cam

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

Internet Version by PATENTEC © 1999      Terms of Use


188 /   HD   BRAKES

*  DD  WHEEL {10}
71.1  DF  .~ Axially movable brake element or housing therefor {8}
72.1  DF  .~.~ With means for actuating brake element {5}
72.7  DF  .~.~.~ By inclined surface (e.g., wedge, cam or screw) {1}
72.8.~.~.~.~ Screw or helical cam

DEFINITION

Classification: 188/72.8

(under subclass 72.7) Apparatus wherein said first element is rotated or oscillated about an axis and said surface extends substantially radially from said axis and fully or partially encompasses said axis, and wherein said second element is constrained to move in a direction parallel to said axis, whereby turning the first element causes axial movement of the second element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

71.4, for disclosure of annular brake elements spread apart from each other by helical cams.