Patents by Inventor Murray Douglas Smith

Murray Douglas Smith 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).

  • Plumbing testing devices
    Patent number: 6840090
    Abstract: A plumbing testing device (10) has a pair of aligned and closed pipe sections (12 and 14) with open sides facing in opposite directions. The plumbing testing device (10) is longitudinally collapsible to facilitate removal from between pipe ends (19 and 20). The pipe sections (12 and 14) each have a port (32, 35), a transparent hose (38) connects the ports to one another, and a valve (30) controls the flow of water between the pipe sections (12 and 14) through the hose (38).
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: January 11, 2005
    Assignee: In Sync Mechanical Contracting Ltd.
    Inventor: Murray Douglas Smith
  • Plumbing testing devices
    Publication number: 20030074955
    Abstract: A plumbing testing device (10) has a pair of aligned and closed pipe sections (12 and 14) with open sides facing in opposite directions. The plumbing testing device (10) is longitudinally collapsible to facilitate removal from between pipe ends (19 and 20). The pipe sections (12 and 14) each have a port (32, 35), a transparent hose (38) connects the ports to one another, and a valve (30) controls the flow of water between the pipe sections (12 and 14) through the hose (38).
    Type: Application
    Filed: October 2, 2002
    Publication date: April 24, 2003
    Inventor: Murray Douglas Smith