Paul M Redhead

US Patent:

62294474, May 8, 2001

Filed:

Feb 9, 2000

Appl. No.:

9/501536

Inventors:

C. Gene Hand - Eugene OR
Paul M. Redhead - Eugene OR

International Classification:

G08B 2100

US Classification:

340614

Abstract:

An indicator assembly includes a conduit segment located in place along a gas supply line served by a pressurized tank. A pressure actuated switch of the assembly closes upon sensing gas pressure in the conduit segment to close a circuit including a battery and an indicator to signal a user that the supply line is pressurized which can occur when proper shut down procedure is not accomplished or a faulty control valve. A bleed valve on the conduit segment permits venting of a pressurized gas line. A check valve of the assembly prevents erroneous activation of the indicator by residual gas trapped in the supply line after shut down.