Patent ID: 9683580
Date: 2017-06-20
CPC Classifications: F01P,F04D,Y10T

Claim:
1. A cooling fan shroud comprising: a main body having a radiator port and a fan port, wherein the fan port has a fixed cylindrical segment defining a partial cylinder at a top side of the fan port and has a lower rim along a bottom side of the fan port that is stepped down from an edge of the fixed cylindrical segment; and a movable cylindrical segment mounted to the main body by a hinge comprised of a pivot plate on the movable cylindrical segment compressed with a base plate on the main body, wherein one of the plates includes a loading rib to provide a predetermined frictional resistance, wherein the movable cylindrical segment is configured to extend above the lower rim in an extended position to form a complete cylindrical ring with the fixed cylindrical segment, and wherein the movable cylindrical segment is configured to pivot behind the lower rim to a retracted position; wherein a dual-position locking mechanism retains the movable cylindrical segment in the extended position or the retracted position, wherein the mechanism is comprised of a tab extending from the movable cylindrical segment and a ratchet pocket in the main body receiving the tab, wherein the ratchet pocket has a pair of stop notches separated by a deflector rib, and wherein the movable cylindrical segment is bendable to allow the tab to ride over the deflector rib in response to a predetermined pivot force applied to the movable cylindrical segment.