Patents by Inventor Ian Wesley Robert Clarke

Ian Wesley Robert Clarke has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Fluid flow indicator
    Patent number: 7891311
    Abstract: A fluid flow indicator for observation of low flow rates in liquids includes a capillary tube (12) slidably mounted at each end in passageways (4) and (5) and biased into a no-flow indicating position by a castellated elastomeric membrane (14) providing a sealed barrier within a chamber (1) between a first zone (17) and a second zone (18). Fluid flow introduced through spigot (9) causes the capillary tube (12) to slide to the opposite end of the passageways (4) and (5) whereupon the deformed position of the elastomeric membrane (14) can readily be observed through transparent walls (3) in the chamber (1). Upon cessation of flow, the elastomeric membrane (14) causes the capillary tube (12) to revert to its original position.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: February 22, 2011
    Assignee: Keystone Medical Pty Ltd
    Inventors: Kenneth Arthur Logan, Paul Christopher Dastoor, Ian Wesley Robert Clarke, Peter J. Hester
  • Fluid Flow Indicator
    Publication number: 20090025626
    Abstract: A fluid flow indicator for observation of low flow rates in liquids includes a capillary tube (12) slidably mounted at each end in passageways (4) and (5) and biased into a no-flow indicating position by a castellated elastomeric membrane (14) providing a sealed barrier within a chamber (1) between a first zone (17) and a second zone (18). Fluid flow introduced through spigot (9) causes the capillary tube (12) to slide to the opposite end of the passageways (4) and (5) whereupon the deformed position of the elastomeric membrane (14) can readily be observed through transparent walls (3) in the chamber (1). Upon cessation of flow, the elastomeric membrane (14) causes the capillary tube (12) to revert to its original position.
    Type: Application
    Filed: March 2, 2007
    Publication date: January 29, 2009
    Applicant: KEYSTONE PRODUCT DEVELOPMENTS PTY LTD
    Inventors: Kenneth Arthur Logan, Paul Christopher Dastoor, Ian Wesley Robert Clarke, Peter J. Hester