Filter head structure

Claim 1

A FILTER HEAD FOR ATTACHMENT TO A FILTER ELEMENT FOR USE IN DIRECTING FLUID INTO AND OUT OF SAID FILTER ELEMENT, INCLUDING A HOLLOW SUBSTANTIALLY CYLINDRICAL STRUCTURE DEFINING A CHAMBER AND HAVING A CLOSED END AND AN OPEN END, SAID OPEN END BEING ADAPTED TO BE CONNECTED TO THE FILTER ELEMENT, A TUBULAR STRUCTURE LOCATED IN SAID CHAMBER COAXIALLY WITH SAID HOLLOW STRUCTURE AND DEFINING A PASSAGE THERETHROUGH, SAID TUBULAR STRUCTURE HAVING ONE END PROJECTING THROUGH SAID OPEN END OF SAID HOLLOW STRUCTURE AND ADAPTED TO BE CONNECTED TO SAID FILTER ELEMENT OUTLET, AN OPPOSITE END OF SAID TUBULAR STRUCTURE PROJECTING THROUGH SAID CLOSED END OF SAID HOLLOW STRUCTURE TO FORM AN OUTLET, AN ALTERNATE TUBULAR OUTLET STRUCTURE EXTENDING RADIALLY INTO SAID HOLLOW STRUCTURE AND HAVING A PASSAGE CONNECTED TO THE PASSAGE OF SAID COAXIAL TUBULAR STRUCTURE, AN INLET PASSAGE ALIGNED RADIALLY WITH AND LEADING INTO SAID CHAMBER, SAID CLOSED END OF SAID HOLLOW STRUCTURE BEING INCLINED TO FORM A ROOF FOR SAID CHAMBER WITH THE CHAMBER HAVING A MAXIMUM HEIGHT ON THE SIDE ADJACENT SAID INLET PASSAGE AND A MINIMUM HEIGHT AT A LOCATION DIAMETRICALLY OPPOSITE THERETO, WITH SAID INLET PASSAGE POSITIONED TO INTRODUCE SAID FLUID AT THE UPPERMOST PORTION OF SAID INCLINED ROOF THEREBY CONCENTRATING FLOW AT A POINT MOST REMOTE FROM SAID INLET AND EFFECTING STREAMLINE DISTRIBUTION FLOW OF SAID FILTER ELEMENT.