Oil Drain Connector Structure for Marine Filter

Abstract

An oil drain connector structure for a marine filter includes a threaded head and an oil drain device to form a unit screwed to the bottom of the filter. A lower circular ring is provided on a groove below a number of through holes and located inside the threaded head, providing a rub locating function. An upper circular ring is provided on another groove above the through holes to control draining and sealing effects depending on the screwed status. This provides an easy and quick way to assemble and disassemble the connector.

1 . An oil drain connector structure for a marine filter, wherein the filter has a bottom provided with a threaded tube, the oil drain connector structure comprising:
 a threaded head, being a hollow pillar and comprising an outer threaded section at an upper end thereof and a base at a lower end thereof, the base having an inner threaded section and a geometric shape; and   an oil drain device, comprising a hollow block corresponding in shape to the base, a pair of lugs at respective sides of the hollow block, a hollow guiding post extending upward from the hollow block, and a hollow nozzle extending downward from the hollow block, the guiding post having an outer threaded section at a lower section thereof, a number of through holes at an upper section thereof, a pair of grooves spaced from each other for accommodation of an upper circular ring and a lower circular ring, and a closed top;   thereby, the guiding post inserting through the threaded head, the outer threaded section of the guiding post engaging with the inner threaded section of the base, the upper circular ring and the lower circular ring fitting onto the grooves and located outside and inside the threaded head, respectively, to form a unit to be screwed to the bottom of the filter   
     
     
         2 . The oil drain connector structure for a marine filter as claimed in  claim 1 , wherein the geometric shape is either of a circle and a hexagon.