Valves and valve actuation – Mechanical movement actuator – Gear
Reexamination Certificate
2000-12-04
2002-06-04
Doerrle, William C. (Department: 3754)
Valves and valve actuation
Mechanical movement actuator
Gear
C257S331000, C257S901000
Reexamination Certificate
active
06398185
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to a timer, and more particularly to a water flow timer.
2. Description of Related Art
The conventional water flow timer is electronically operated and is therefore rather expensive. In addition, such electronically-operated water flow timers are generally designed for use in a large-scale irrigation of a golf course, farm, or the like. In other words, the conventional water flow timer is not suitable for use as a household item in terms of price and performance.
BRIEF SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide an inexpensive water flow timer.
It is another objective of the present invention to provide a water flow timer which is intended for use in a small-scale irrigation.
It is still another objective of the present invention to provide a mechanically-operated water flow timer.
The features, functions, and advantages of the present invention will be readily understood upon a thoughtful deliberation of the following detailed description of the present invention with reference to the accompanying drawings.
REFERENCES:
patent: 4372354 (1983-02-01), Moore
patent: 5649562 (1997-07-01), Sturman et al.
patent: 6050286 (2000-04-01), Kruer et al.
patent: 6084504 (2000-07-01), Roche et al.
patent: D445347 (2001-07-01), Wang
patent: 6257264 (2001-07-01), Sturman et al.
Bonderer David A
Doerrle William C.
Harrison & Egbert
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