US PATENT SUBCLASS 4 / 246.4
.~.~ Four bar link


Current as of: June, 1999
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4 /   HD   BATHS, CLOSETS, SINKS, AND SPITTOONS

246.1  DF  OPENER OR CLOSER FOR A CLOSET SEAT OR LID {2}
246.3  DF  .~ Lever operated opener {1}
246.4.~.~ Four bar link {1}
246.5  DF  .~.~.~> Using a seat or lid for a link


DEFINITION

Classification: 4/246.4

Four bar link:

(under subclass 246.3) Subject matter wherein the mechanical link includes two members that are each connected to a stationary rotatable joint and have a rod connected to the members by rotatable joints, where one of the members is a lever manipulated by the user while the other member or rod is or is in contact with the seat or lid, so that the motion of the lever is transmitted by the mechanical link to move the seat or lid from one position to another.