Fluid sprinkling – spraying – and diffusing – With signals – indicators – recorders – meters or changeable... – With spray material quantity or flow indicating means
Reexamination Certificate
2006-12-18
2009-11-03
Tran, Len (Department: 3752)
Fluid sprinkling, spraying, and diffusing
With signals, indicators, recorders, meters or changeable...
With spray material quantity or flow indicating means
C239S071000, C239S525000, C239S526000, C239S583000, C073S861330
Reexamination Certificate
active
07611074
ABSTRACT:
A watering nozzle includes a water volume detection unit received in the barrel of the watering nozzle and the water volume detection unit has two stationary members and a rotatable member which is rotatably connected between the two stationary members. The rotatable member has a magnet connected thereto which is rotated with the rotatable member when water passes through the rotatable member. A display unit is connected to the barrel and has a circuit board and a display member which is electrically connected to the circuit board. The times of revolution are detected by a magnetic spring switch on the circuit board and transferred into digits on the display member to show the volume of water that flows through the rotatable member and the nozzle unit connected to the barrel.
REFERENCES:
patent: 4700579 (1987-10-01), Hall
patent: 5540102 (1996-07-01), Kindrick
patent: 6085586 (2000-07-01), Arvidson et al.
patent: 7257999 (2007-08-01), Goldfarb
Reis Ryan
Tran Len
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