US PATENT SUBCLASS 49 / 119
.~.~ Counterbalance effect derived from opposed closure


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

Internet Version by PATENTEC © 1999      Terms of Use



49 /   HD   MOVABLE OR REMOVABLE CLOSURES

73.1  DF  CLOSURES INTERCONNECTED FOR CONCURRENT MOVEMENT {9}
116  DF  .~ Opposed similar movement {5}
119.~.~ Counterbalance effect derived from opposed closure {2}
120  DF  .~.~.~> Bipartite, center-opening type; e.g., elevator door
121  DF  .~.~.~> Cable interconnected


DEFINITION

Classification: 49/119

(under subclass 116) Device wherein the weight of one closure assists in balancing the weight of another closure moving in a reverse direction, i.e., opposed vertical movement.

SEE OR SEARCH THIS CLASS, SUBCLASS:

5+, for counterbalanced, interconnected closures with a fusible connection therebetween.

98+, for counterbalanced opposed closures with means to permit independent movement.