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Inflator with inflation and deflation effects

a technology of deflation and inflator, which is applied in the direction of pump components, positive displacement liquid engines, liquid fuel engine components, etc., can solve the problem of mis-installation of the conducting member by the user, and achieve the effect of minimizing the possibility of mis-installation and easy identification

Inactive Publication Date: 2006-02-16
CHEN CHIANG PEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008] It is therefore a primary object of the present invention to provide an inflator with both inflation and deflation effects. In inflation or deflation operations, the gas flow ways of the inflator are respectively positioned in the cylinder body and the handle of the inflator. Therefore, a user can easily distinguish the two gas flow ways from each other so as to minimize the possibility of mis-installation.

Problems solved by technology

However, such inflator cannot exhaust the gas from the object.
As a result, it often takes place that a user mis-mounts the conducting member at an incorrect one-way valve.

Method used

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  • Inflator with inflation and deflation effects
  • Inflator with inflation and deflation effects
  • Inflator with inflation and deflation effects

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Embodiment Construction

[0023] Please refer to FIGS. 3 and 4. According to a first embodiment, the inflator 20 of the present invention includes a hollow cylinder body 30 and a piston 40. A rear end of the cylinder body 30 is sealed by a rear cap 32. A leakproof member such as an O-ring 42 is fitted around the circumference of the piston 40. The piston 40 is fitted in the cylinder body 30 with the O-ring 42 airtight engaged with inner wall face of the cylinder body. The piston divides the interior of the cylinder body into two spaces. The space between front end of the cylinder body and the piston forms a compression room 34.

[0024] A hollow piston rod 50 has an internal gas passage 52. A front end of the piston rod extends through the rear cap 32 into the cylinder body to connect with the piston 40 for driving the piston. A rear end of the piston rod 50 is positioned on outer side of the cylinder body. The front end of the gas passage 52 communicates with the compression room 34.

[0025] A handle 55 fixedl...

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Abstract

An inflator with inflation and deflation effects. The inflator includes: a cylinder body in which a piston is fitted for compressing the gas in a compression room formed in the cylinder body between the piston and the front end of the cylinder body; a piston rod having an internal gas passage, a front end of the piston rod extending through a rear end of the cylinder body into the cylinder body to connect with the piston, a front end of the gas passage communicating with the compression room; a handle connected with a rear end of the piston rod, a rear end of the gas passage communicating with outer side; a first one-way valve disposed at a front end of the cylinder body and only permitting the gas to one-way flow between the compression room and outer side; a second one-way valve only permitting the gas to one-way flow between outer side, the gas passage and the compression room. Along the longitude of the inflator, the two one-way valves only permit the gas to one-way flow in the same direction.

Description

FIELD OF THE INVENTION [0001] The present invention is related to an inflating device, and more particularly to an inflator with both inflation and deflation effects. The inflator minimizes the possibility of mis-installation when inflating or deflating an object. BACKGROUND OF THE INVENTION [0002] A conventional inflator is used to inflate an object. However, such inflator cannot exhaust the gas from the object. [0003] U.S. Pat. No. 6,250,343 of this applicant discloses an inflator which can inflate an object as well as suck gas out of the object. [0004]FIG. 1 shows the structure of the above Patent, in which a piston 12 is disposed in a cylinder body 10. Via a piston rod 14, the piston 12 can be pushed to compress the gas in the internal space 15 of the cylinder body. An intake one-way valve 16 and an exhaust one-way valve 18 are arranged at front end of the cylinder body 10. The intake one-way valve 16 only permits the gas to flow from outer side into the space 15, while the exha...

Claims

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Application Information

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IPC IPC(8): F04B39/10F04B53/10
CPCF04B33/005
Inventor CHEN, CHIANG PEI
Owner CHEN CHIANG PEI