Patent ID: 8251119

Claim:
A method of selectively moving a window cover in first and second directions by reciprocating a spiral thread follower handle along a spiral rod connected to the window cover, comprising: first, manually gripping a first section of the handle and translating the handle along the spiral rod in one of two opposite directions to rotate the rod in one of two opposite directions selected by the direction of translation of the handle and thereby move the window cover in a first direction; second, manually gripping a second section of the handle and translating the handle along the rod in the second of the two opposite directions to move the handle along the rod without rotating the rod and thereby without moving the window cover; third, manually gripping the first section of the handle and translating the handle along the rod in the second direction to rotate the rod in the second direction and move the window cover in a second direction; and fourth, manually gripping the second section of the handle and translating the handle along the rod in the first direction to move the handle along the rod without rotating the rod and thereby without moving the window cover.