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  Pneumatic-aided fitness equipmentUSPTO Application #: 20070265148Title: 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. (end of abstract) Agent: Egbert Law Offices - Houston, TX, US Inventor: Richard Lin USPTO Applicaton #: 20070265148 - Class: 482112000 (USPTO) Related Patent Categories: Exercise Devices, User Manipulated Force Resisting Apparatus, Component Thereof, Or Accessory Therefor, Utilizing Fluid Resistance, Confined Hydraulic Or Pneumatic Chamber The Patent Description & Claims data below is from USPTO Patent Application 20070265148. Brief Patent Description - Full Patent Description - Patent Application Claims
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 structure of a hollow tube. With the support of the ring, the place between the two handles can be pushed in and out. The opening and closing movement generated inside the air chamber between the inside of the piston mentioned before and the inner wall of the hollow tube form the pneumatic aided resistance. The piston placed inside the handle of the handgrip mentioned above expands at the horizontal end of the handle; therefore, when it is placed inside the hollow tube of another handle, the end opening of the hollow tube must be positioned to limit the piston from coming off. 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 space between the two semi-circular components and the end opening of the hollow tube is usually glued by paste. Therefore, when the handgrip is used later and when the two handles are making relative exercises, its piston will create impact on the positioning component. Thus, the area, where the positioning structure made by the two semi-circular components, is separated because of the impact, the glue between the two semi-circular components and the end of opening is not sticky because of the combining area is narrow. 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. [0006] Thus, to overcome the aforementioned problems of the prior art, it would be an advancement in the art to provide an improved structure that can significantly improve the efficacy. [0007] To this end, the inventor has provided the present invention of practicability after deliberate design and evaluation based on years of experience in the production, development and design of related products. BRIEF SUMMARY OF THE INVENTION [0008] The improved fact of the present invention is described as follows: [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. [0010] The new effects of the present invention is described as follows: [0011] 1. The present invention uses a directional ring 80 placed on the end opening 120 of the horizontal tube 12 of the first handle 10. The directional ring 80 has several protruding blocks 81 spaced through out the surface of the end opening 120 of the horizontal tube 12, so that the end opening 120 of the horizontal tube 12 has several concave slots 121 spaced through out the surface for the protruding blocks 81 mentioned above to position. The concave edge 82 is placed inside the directional ring 80, so that the protruding tube 22 of the second handle 20 coordinates the protruding plate 221 extending in an axial direction corresponding to the concave edge 82. By so doing, the protruding tube 22 of the second handle 20 and the combined piston base 30 receive a fixed directional effect when the horizontal tube 12 of the first handle 10 is sliding, such that the second handle 12 will not turn. [0012] 2. The present invention uses the design of the pressure regulating groove 60 and knob 70 to seal or separate the through air hole 64 of the pressure regulating groove 60 by tightening the knob 70 down or loosening it up. By so doing, the levels of the air pressure resistance are adjusted to meet the user's demand. [0013] 3. The embodiment of the present invention disclosed in FIG. 9 uses the vertical press bar 103B of the two press handles 101 102 to make the concave inward. Its application can be used on the leg press between the legs, which is fitness equipment for legs. [0014] Although the invention has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the invention as hereinafter claimed. BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS [0015] FIG. 1 shows an assembled perspective view of the present invention. [0016] FIG. 2 shows an exploded perspective view of the present invention. [0017] FIG. 3 shows an exploded perspective view of the partial structure of the present invention. Continue reading... Full patent description for Pneumatic-aided fitness equipment Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Pneumatic-aided fitness equipment patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Pneumatic-aided fitness equipment or other areas of interest. ### Previous Patent Application: Exercise equipment Next Patent Application: Power driven tilting inversion exerciser Industry Class: Exercise devices ### FreshPatents.com Support Thank you for viewing the Pneumatic-aided fitness equipment patent info. IP-related news and info Results in 7.99567 seconds Other interesting Feshpatents.com categories: Tyco , Unilever , Warner-lambert , 3m |
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