Ball check valve having particular spring means

Claim 1

A CHECK VALVE HAVING A SPRING AND BALL MOVABLE IN A CYLINDRICAL PASSAGE, SAID SPRING COMPRISING: A SERIES OF RESILIENT WIRE LOOPS ENGAGING AN INSIDE PERIPHERY OF THE PASSAGE; SAID SERIES OF RESILIENT WIRE LOOPS INCLUDING A FIRST GROUP OF ALTERNATE LOOPS FORMED IN A POLYGON AND BEING ALIGNED AXIALLY SO THAT FACES OF SAID POLYGON CORRESPOND IN SPATIAL RELATIONSHIP; SAID SERIES OF RESILIENT WIRE LOOPS INCLUDING A SECOND GROUP OF ALTERNATELY SPACED LOOPS FORMED IN A POLYGON WITH FACES OF SAID LOOP IN SAID SECOND GROUP SPATIAL RELATIONSHIP WITH EACH LOOP IN SAID SECOND GROUP BUT BEING ANGULARLY OFFSET FROM THE FACES OF THE POLYGONAL LOOPS OF SAID FIRST GROUP OF ALTERNATE LOOPS, THE BALL OF THE CHECK VALVE SUBSTANTIALLY FILLING THE CROSS SECTION OF THE PASSAGE AND ALLOWING FLUID FLOW THEREBY, SAID FIRST AND SECOND GROUPS OF ALTERNATELY SPACED LOOPS ENGAGING THE INSIDE PERIPHERY OF THE PASSAGE AND ALLOWING FLUID FLOW BY THE SPRING THROUGH SPACES CREATED BY THE OFFSET DISPOSITION OF THE ADJACENT POLYGONAL LOOPS RELATIVE TO THE PASSAGE.