Title:
HYDRAULIC PUMP
Document Type and Number:
WIPO Patent Application WO/2008/035574
Kind Code:
A1
Abstract:
[PROBLEMS] To provide an economically preferable hydraulic pump by reducing the
production cost and the use cost sharply. [MEANS FOR SOLVING PROBLEMS] The hydraulic
pump comprises a water channel (23) for supplying water into a pump outer wall
body (11), a moving pressure body (22) which applies pressure to a lower water
storage region (21) and moves downward when water is replenished and moves upward
by obtaining buoyancy when water is drained after the water replenishing, a pumping
pipe (24) for feeding water supplied through downward movement of the moving
pressure body (22), and a drainage pipe (31) for draining water in the moving pressure
body (22) located at a lower position. The moving pressure body (22) comprises
an opening/closing valve (41) for controlling whether water is replenished or
not to its inner space, and a water flow valve for controlling flowing and non-flowing of
water from the water channel (23) to the lower water storage region (21). The water
flow valve opens when the moving pressure body (22) floats and closes when floating
of moving pressure body (22) stops.
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Inventors:
YASOSHIMA TUYOSHI (JP)
Application Number:
PCT/JP2007/067445
Publication Date:
March 27, 2008
Filing Date:
September 06, 2007
Export Citation:
Assignee:
YASOSHIMA TUYOSHI (JP)
International Classes:
F04B9/10; F03B17/02; F04B9/00; F04B19/00
Foreign References:
| JPH06336970A | 1994-12-06 | |||
| JP3053114U | 1998-10-23 | |||
| JP2006029277A | 2006-02-02 | |||
| JPS5776278A | 1982-05-13 | |||
| JPS54114807A | 1979-09-07 | |||
| JP2000054946A | 2000-02-22 |
Attorney, Agent or Firm:
TOGASHI, Ryuichi (12, JP)
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