Pneumatic-aided fitness equipment

Abstract

The structure of pneumatic aided fitness equipment includes a combined piston base at the piston made by the protruding tube of the second handle, which includes a protruding column and a piston, and the protruding column can be inserted and secured into to the protruding tube of the second handle. The piston can be slid inside the horizontal tube of the first handle. A limiting clamping ring includes a clamping part and a retracting hole, the limit clamping ring being positioned at an end opening of a horizontal tube of the first handle. The retracting hole is used for said protruding tube of the second handle, and a round edge is formed around the retracting hole to block the piston of the combined piston base. By so doing, the position of the piston of the second handle is more secure, durable and practical.

Description

RELATED U.S. APPLICATIONS [0001] Not applicable. STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] Not applicable. REFERENCE TO MICROFICHE APPENDIX [0003] Not applicable. FIELD OF THE INVENTION [0004] The present invention relates generally to an improved structure of pneumatic-aided fitness equipment, and more particularly to fitness equipment which has handle or pushing part, such as a handgrip or leg press. BACKGROUND OF THE INVENTION [0005] The fitness equipment of the present invention has a pneumatic aid, and the structure of the fitness equipment must have a handle or pushing part, such as a handgrip and leg press. For example, there is a conventional structure of the handgrip, the handgrip being fitness equipment that trains hands to control the muscle force. The conventional handgrips have pneumatic structures in an H-shape, and each handgrip is comprised of a first handle and second handle. The place where two handles connect has a piston inside the st...

AI Technical Summary

Benefits of technology

[0009] The present invention mainly uses the combined piston base 30 where the piston made by the protruding tube 21 of the second handle 20, and the protruding column 31 of the combined piston base 30 can be inserted into the horizontal tube 12 of the first handle 31 and secured. Because of area between the protruding column 31 and protruding tube 20 is larger, and if the space between them is glued with paste, the piston base may be more durable. Moreover, a limit clamping ring 40 is used to lock to the end opening 120 of the horizontal tube 12 of the first handle 10. The limit clamping ring 40 can be secured by screwing to block the combined piston base 30 and endure the frequent impact of the combined piston base 30. By so doing, compared to the conventional structure, the piston of the second handle may be positioned more securely and more durable.

Problems solved by technology

The conventional positioning structure must have two semi-circular components combined at the end opening of the hollow tube, because the positioning structure cannot be fitted from the expanded piston.

The biggest problem of the handgrip is that the structure of the piston positioning is not stable and is easy to be loosened and damaged, shortening the life span of the handgrip and not meeting the demand of users.

Images