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Title:
METHOD AND PUMP FOR PUMPING UP BICYCLE TYRE WITH HIGH-PRESSURE AIR
Document Type and Number:
Japanese Patent JPS56576
Kind Code:
A
Abstract:

PURPOSE: To obtain a light device generating a high-pressure air efficiently by sliding an outer cylinder having both functions of a conventional operating rod and a cylinder.

CONSTITUTION: From drawing up an outer barrel 4, a ball 11 in a travelling part 14 is sucked, a fine hole 12 in a check valve projecting tube 16 is closed, an air coming in from the bottom of the outer barrel 4 opens a packing 2 surrounding the check valve projecting tube 16 and flows into an air feed part 9 on an inside top of the outer barrel 4 to accumulate an external air beforehand; from depressing the outer barrel 4, the packing 2 is pressed by the air accumulated in the feed part 9 beforehand, and the air is prevented from flowing outward counter through a void between an inner barrel 5 and the outer barrel 4. Then, the ball 11 in the travelling part 14 is dropped to open the fine hole 12, and a high-pressure air is stored in an air reservoir 10 by way of a check valve 3, thus pumping up a tyre with the stored high-pressure air.


Inventors:
Todoroki, Hiroshi
Application Number:
JP1979000073971
Publication Date:
January 07, 1981
Filing Date:
June 14, 1979
Export Citation:
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Assignee:
BRIDGESTONE CYCLE CO
International Classes:
F04B33/00; (IPC1-7): F04B33/00



 
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