Liquid flow-rate digital measurement device

• US 20080282809A1
• Filed: 05/08/2008
• Published: 11/20/2008
• Est. Priority Date: 05/15/2007
• Status: Abandoned Application

• Current Assignee: Piusi S.P.A. (Tibonite Investment SA)
• Original Assignee: Piusi S.P.A. (Tibonite Investment SA)
• Inventors: Varini, Otto
• Application Number:
  US12/149,802
• Publication Number:
  US 20080282809A1
• Time in Patent Office: Days
• US Class Current: 73/861.77
• CPC Class Codes: G01F 1/10 using rotating vanes with axial admission
• CPC Class Codes: G01F 1/115 with magnetic or electromagnetic coupling to the indicating device

Abstract

A liquid flow-rate digital measurement device, comprising a turbine inserted in the liquid conveyance duct and associated with a shaft which transmits, at a first end, an axial thrust to a corresponding support, a shaft of the turbine being made of stainless steel and being provided, at the first end, with a tip which is made of wear-resistant material, an element made of wear-resistant material being inserted in the plastic body of the measurement device in such a position as to abut against the tip of the turbine shaft.

Claims

1. A liquid flow-rate digital measurement device, comprising a body made of plastics which is adapted to delimit a liquid conveyance duct with a turbine inserted therein, said turbine being provided with a magnet which transmits pulses to a microprocessor comprised within said body and provided with an electronic board complete with a display for direct reading of a flow-rate of conveyed liquid, said turbine being associated with a shaft which transmits, at a first end, an axial thrust to a corresponding support, wherein a shaft of the turbine is made of stainless steel and is provided, at said first end, with a tip which is made of wear-resistant material, an element made of wear-resistant material being inserted in the plastic body of the measurement device in such a position as to abut against said tip of the turbine shaft.

2. The measurement device according to claim 1, wherein the wear-resistant material is constituted by ceramic.

3. The measurement device according to claim 1, wherein the wear-resistant material is constituted by hard metal.

4. The measurement device according to claim 1, wherein the wear-resistant material is constituted by surface-hardened steel.

5. The measurement device according to claim 1, wherein both the tip of the shaft of the turbine and the element designed to abut against said tip have a spherical shape.