Fluid reaction surfaces (i.e. – impellers) – Having clutch or brake means
Patent
1997-04-17
2000-08-08
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
Having clutch or brake means
416170R, 416DIG4, 415123, 4151242, B63H 2330
Patent
active
060992557
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a storage device capable to store up small fluid power until it is great enough to be useful.
It is common in fluid powered devices to have a mechanism or electric generator being driven by a fan, paddle or float which is moved by a fluid. It is, of course, necessary that the fluid current is strong enough to create necessary force to activate the mechanism or electric generator. Devices like this are, in some cases, impractical because the fluid movement may not be strong enough to activate the mechanism or to drive the electric generator fast enough to generate necessary electricity power.
I have found that this disadvantage may be overcome by adding a gear train having mechanical advantage greater than one between the prime mover and the electric generator so that even smaller fluid movement can cause the fan or paddle to start moving. Output power from the gear train then wind up a spring device or a rubber band, a mechanism automatically release a latch between the spring device (or rubber band) and the electric generator (or mechanism) so that the electric generator or mechanism will be started to move. The latch is then moved to a position clear of meeting the stopper again. This is done by centrifugal force on the swingable latch or on some weights; the swingable latch being swung up after impact on an inclined surface or the latch guided by a circular track to rotate in a different level than the stopper. After a certain amount of energy stored in the spring device or rubber band has been used, the latch will automatically be moved back to its original position by gravitational force or by a small spring to stop movement of the electric generator or mechanism. Then fluid power from the fan, paddle or float can be stored up in the spring device or rubber band again until the energy stored up is great enough to cause another release of the latch. The stopper provided to stop the latch has an adjustable screw so that the amount of energy stored in the spring device before the stopper releases the latch can be adjusted as desired.
The mechanism activated by the spring force released can be used to drive various devices for different desired purposes. In the case that the mechanism is a small hammer striking on pieces of different shapes and materials, some sounds of desired frequencies and pitches can be created.
In the form shown here, the spring device, a rubber band releases its energy to drive an electric generator. The electricity power thus generated can be used for various purposes simply by connecting the output wires from the electric generator to the devices intended to be driven. In the form shown here, the electricity power generated is used to light up some light emitting devices to give out some lights in the fields, gardens or other remote locations. Also the light emitting devices can be installed at any suitable places near to the fan or the electric generator. In the form shown here, some small light bulbs or light emitting diodes are installed behind the fan blades to shine up a transparent flower-shaped cone mounted on the front nose of the fan.
In case that the spring device to be used is a spiral spring, the shaft of the fan or paddle will be connected to a crank rod which then drive a ratchet wheel by a spring pawl mounted on a lever which has one end pivoted on the axis of the ratchet wheel. A pin on the rim of the ratchet wheel is connected to one end of a spiral spring while the other end of the spiral spring is connected to a shaft which extends through the central axis of the Automatic Latch mechanism. The other structures are then the same as in the case when rubber band is used as the spring device. When the prime mover is a paddle or float, they can be linked to the lever having the spring pawl so as to drive the ratchet wheel and store the energy into a spiral spring or rubber band.
Products fabricated using this fluid power storage device can convert wave energy into electricity power for lighting or sending out wireless broadcasting signals t
REFERENCES:
patent: 2534411 (1950-12-01), Bright
patent: 4260041 (1981-04-01), Mabuchi
patent: 4524283 (1985-06-01), Latvus
Fernandez A. M.
Look Edward K.
Nguyen Ninh
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