Lube pump telescoping enclosure

Abstract

Enclosure ( 16 ) for housing a coupler ( 18 ) between a driving rod ( 20 ) and a driven rod ( 22 ) comprises a first and a second preferably cylindrical pieces ( 30, 28 ). Said pieces are sized so that the first piece ( 30 ) is able to slide telescopically within the second piece ( 28 ) and are threaded to engage each other when in operation the enclosure ( 16 ) is in a close position, thereby the enclosure ( 16 ) being able to retain lubricant in the inside. For service, after having drained the lubricant from the enclosure ( 16 ), the two pieces are loosened by screwing the first piece ( 30 ) until the end of the thread is reached, and then the first piece ( 30 ) is slideably telescoped into the second piece ( 28 ), thereby setting the enclosure ( 16 ) in an open position an enabling easy access to the rod coupler ( 18 ).

1 . An enclosure for retaining pump lubricant on a pump assembly having a driver with a piston rod and a pump with a chemical rod, said rods being joined by a removable coupling, the improvement comprising first and second generally cylindrical housing pieces, said pieces sized so that said first piece will telescopically slide in said second piece and being threaded so as to releasably engage each other so as being selectively engageable in first and second positions whereby in said first position, said first piece is slideably telescoped in said second piece and in said second position, said first and second pieces arc sealingly engaged with said driver and said pump. 
     
     
         2 . The enclosure of claim I wherein said pieces comprise exterior surfaces, said exterior surfaces comprising knurling to enable manual manipulation between said first and second positions.