Patent ID: 6855897
Filing Date: 2005-02-15
Classification: A61L,C02F,H01H

Abstract:
1. A flow switch including: a body having an inlet passage and an outlet passage; a reed and a contact mounted in said body downstream of said inlet passage, said reed being adapted for oscillating movement towards and away from said contact into and out of engagement therewith, and said reed and said contact being constructed of electrically conductive material; a piston mounted in said inlet passage for sliding movement along said inlet passage towards and away from said reed, said piston having an upstream end and a downstream end; and a flow passage in said piston, said flow passage having an inlet at or adjacent the upstream end and an outlet intermediate said upstream end and said downstream end, the parts being so made and arranged that fluid entering said inlet passage will cause said piston to move in said inlet passage and engage with said reed forcing said reed into electrically conductive engagement with said contact and will flow through said flow passage and be discharged sidewardly of said piston in said body downstream of said inlet passage for discharge through said outlet passage.