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Air pump

a technology of air pump and air intake, which is applied in the direction of pump components, positive displacement liquid engines, liquid fuel engine components, etc., can solve the problems of inconvenience in use, and achieve the effect of convenient operation

Inactive Publication Date: 2014-09-18
WANG WEI CHI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an air pump with a pressure relief device that is easy to operate and can provide a pressure relief effect.

Problems solved by technology

Consequently, the adjusting rod 83 may be separated from the base 81 during the pressure relief process and this is inconvenient in use.

Method used

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Embodiment Construction

[0018]With reference to FIGS. 1 to 3, an air pump in accordance with the present invention comprises a main frame 10, a first pressure cylinder 11, a second pressure cylinder 12, an outlet device 13, a footboard 20, and a pressure relief device 30.

[0019]The main frame 10 has a front end and a rear end. The pressure cylinders 11, 12 are movably mounted in the main frame 10 at an interval and are parallel with each other, and each pressure cylinder 11, 12 has a connecting end and an outlet end. The connecting ends of the pressure cylinders 11, 12 are securely connected to the main frame 10 proximal to the rear end of the main frame 10.

[0020]The outlet device 13 is connected to and communicates with the outlet ends of the pressure cylinders 11, 12 near the front end of the main frame 10, and has two side faces and a check valve 14 mounted in the outlet device 13 near the first pressure cylinder 11 as shown in FIG. 4.

[0021]The footboard 20 is pivotally connected to the main frame 10, is...

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PUM

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Abstract

An air pump has a main frame, a first pressure cylinder, a second pressure cylinder, an outlet device, a footboard, and a pressure relief device. The outlet device is connected to and communicates with the pressure cylinders. The footboard is pivotally connected to the main frame, is securely connected to the pressure cylinders, and has two side panels and a limiting board. The pressure relief device is mounted on the outlet device near the first pressure cylinder and has a base, a ball, an adjusting rod, and an anti-slip-off element. The base is securely mounted on the side face of the outlet device that faces the limiting board, and has a leaking channel. A length of the adjusting rod that extends into the leaking channel of the base is longer than a distance that is defined between the limiting board and the anti-slip-off element.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an air pump, and more particularly relates to an air pump that has a pressure relief device to provide a pressure relief effect to the air pump and can be operated conveniently.[0003]2. Description of Related Art[0004]With reference to FIGS. 5 to 7, a conventional air pump has a main frame 90, two pressure cylinders 91, a footboard 93, an outlet device 95, and a pressure relief device 80. The pressure cylinders 91 are mounted in the main frame 90, and each pressure cylinder has a cylinder 92 and a cylinder axis extending out of the cylinder 92. The footboard 93 is pivotally connected to the main frame 90 and has two side panels 94. The outlet device 95 is connected to and communicates with the pressure cylinders 91 and has a side face and a check valve mounted in the outlet device 95.[0005]The pressure relief device 80 is mounted on the outlet device 95 near the check valve and has a bas...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F04B39/00
CPCF04B39/00F04B33/005F04B33/00
Inventor WANG, WEI-CHI
Owner WANG WEI CHI