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Pneumatic cylinder plug

a technology of cylinder plugs and cylinders, applied in the direction of machines/engines, shock absorbers, chairs, etc., can solve the problem of inconvenient maintenance of closed pneumatic devices

Inactive Publication Date: 2005-10-06
CHEN TSEN HSUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0017] The main objective of the invention is to provide a pneumatic cylinder plug that supports a piston rod inside a cylinder and keeps the piston rod sliding along a straight line from becoming misaligned.

Problems solved by technology

Therefore, the closed pneumatic device is not durable.

Method used

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  • Pneumatic cylinder plug
  • Pneumatic cylinder plug
  • Pneumatic cylinder plug

Examples

Experimental program
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Embodiment Construction

[0025] With reference to FIGS. 1, a pneumatic cylinder plug (10) in accordance with the present invention is used with a conventional closed pneumatic device.

[0026] The closed pneumatic device has a cylinder assembly (30′), a cross-connect valve (not shown), a bushing (60′), a hermetic seal (50′) and a piston assembly (20′).

[0027] The cylinder assembly (30′) has an inner cylinder (31′), an outer cylinder (32′), an air passage (33′) and an end cap (34′). The inner cylinder (31′) has a top end (not shown), a bottom end and an internal chamber. The outer cylinder (32′) is mounted concentrically around the inner cylinder (31′) and has a distal end (not shown) and a proximal end. The air passage (33′) is defined between the inner cylinder (31′) and the outer cylinder (32′) and communicates with the internal chamber. The end cap (34′) is mounted at the proximal end of the outer cylinder (32′).

[0028] The cross-connect valve is mounted in the inner cylinder (31′) near the top end and sel...

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PUM

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Abstract

A pneumatic cylinder plug has an annular body, an axial through hole, an inside flange, an outside flange, an air port, an inner bushing and an air gap. The through hole is defined through the annular body. The air port is formed radially through the annular body and the inside flange from the axial through hole to the outside surface of the annular body. The inner bushing is formed inside the inner flange and has an inner diameter. The pneumatic cylinder plug is used with a closed pneumatic device to further support a piston rod in the closed pneumatic device.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a cylinder plug, and more particularly to a plug to slidably mount a pneumatic cylinder on a piston rod and to provide a port to one side of a pneumatic piston mounted in the pneumatic cylinder. [0003] 2. Description of Related Art [0004] Closed pneumatic devices have a simple structure and are used in adjustable furniture, medical appliances, bicycles, motorcycles, vehicles, etc. For example, some adjustable chairs, as used in offices, use a closed pneumatic device to adjust the height of the seat of the chair. [0005] With reference to FIG. 3, one embodiment of a conventional closed pneumatic device used to adjust the position of an object, has a cylinder assembly (30), a cross-connect valve (not shown), a bushing (60), a hermetic seal (50), a cylinder plug (40), and a piston assembly (20). [0006] The cylinder assembly (30) has an inner cylinder (31), an outer cylinder (32), an air ...

Claims

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Application Information

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IPC IPC(8): F01B31/00F16F9/36F16J9/12
CPCA47C3/30
Inventor CHEN, TSEN-HSUAN
Owner CHEN TSEN HSUAN