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Universal roller unit for a treadmillRelated Patent Categories: Exercise Devices, Involving User Translation Or Physical Simulation Thereof, Treadmill For Foot TravelUniversal roller unit for a treadmill description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20060160666, Universal roller unit for a treadmill. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] 1. Fields of the Invention [0002] The invention relates to a roller unit for a treadmill, and more particularly, to a roller unit having improved convenience in use. [0003] 2. Description of the Prior Art [0004] Rollers fitted at the bottom of treadmills are used to facilitate a smooth movement of the treadmill, thereby achieving the laborsaving effect. A typical product is disclosed in U.S. Pat. No. 5,672,140 that describes roller sets are axially and pivotably arranged at one end of the ground-touching cross bars at both sides of the bottom of the treadmill while the roller sets in storage position are not in contact with the ground. In use, the roller sets are used as a pivoting point to incline the main body of the treadmill so as to facilitate the movement of the treadmill. Although this prior art can exactly reach the expected effect, it's difficult for weak people to incline the heavy treadmill during its whole movement. Even, this could lead to an unnecessary accident. [0005] Besides, the design of four rollers directly and permanently in contact with the ground can be seen in U.S. Pat. No. 5,372,559. However, this kind of structure will cause an unexpected sliding or shaking when the treadmill is operated. As a result, the safety of the user is seriously affected and it gradually becomes extinct on the market. [0006] In order to effectively resolve the above-mentioned problems, a support member is provided at proper position of the roller set so as to increase the frictional resistance with the ground. This structure is disclosed in U.S. Pat. No. 6,090,016. However, a swinging see-saw effect will be created when the treadmill is moved on an uneven surface, thereby leading to inconvenience and difficulty of the horizontal adjustment. SUMMARY OF THE INVENTION [0007] In consideration of the above-mentioned, the inventor of the present invention thinks that the displacement of the treadmill is not a regular action. In operational position, it's not required to use the roller sets. In storage position, it's not necessarily required to shift the treadmill. As a result, partial roller sets can be stored and kept away from the ground so as to eliminate the unexpected sliding shift. In brief, all rollers are pulled out only when it's really required to displace the treadmill. It's therefore an object of the invention to provide a room for accommodating a universal roller unit at the side wall of a rear bar of the supporting frame, thereby eliminating potential drawbacks of the conventional treadmill in respect of the design and the application. BRIEF DESCRIPTION OF THE DRAWINGS [0008] The accomplishment of this and other objects of the invention will become apparent from the following description and its accompanying drawings of which: [0009] FIG. 1 is a perspective view of a treadmill with a universal roller unit in accordance with the invention; [0010] FIG. 2 is a side view of the treadmill of FIG. 1 in a flat operational position; [0011] FIG. 3 is a perspective exploded view of the universal roller unit and the supporting frame in accordance with the invention; [0012] FIG. 4 is a side view of the treadmill of FIG. 2 in a folded position, showing that the front bar of the supporting frame tilts to the side; [0013] FIG. 5 is a side view of the treadmill of FIG. 2 in a folded position, showing that the universal roller is swiveled outwardly in an operational position; and [0014] FIG. 6 is a side view of the treadmill of FIG. 2 in a folded position, showing that the universal roller is in contact with the ground. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT [0015] Referring to FIGS. 1, 2 and 3, a treadmill 10 in accordance with the invention includes: [0016] a supporting frame 20 positioned at the front end of a platform 30, a handrail 21 and an electric console 22 being disposed above the supporting frame 20, a front and a rear bar 23, 24 being attached to the supporting frame 20, a roller 25 being provided at both ends of the front bar 23, respectively, a universal roller unit 40 being provided in the middle of the rear bar 24; [0017] a platform 30 in rectangular shape having a continuous belt 32 driven by a motor transmission unit (not shown) and movable around the platform 30, a support bar 34 being fitted to the bottom of the rear end of the platform 30. By assembling the above-mentioned components, the platform 30 on the supporting frame 20 can be folded in an upright storage position or in a flat operational position. [0018] The universal roller unit 40 includes: [0019] an angle iron 41 attached to the side wall of the rear bar 24 in cooperation with a fastening element 42 and a compression pin 43; [0020] a compression pin 43 passing through a borehole 26 in the rear bar 24, the compression pin 43 having different outer diameters, the borehole 26 also having different inner diameters at both ends thereof so that an unexpected detachment of the compression pin 43 from the borehole 26 can be avoided; and Continue reading about Universal roller unit for a treadmill... Full patent description for Universal roller unit for a treadmill Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Universal roller unit for a treadmill 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 Universal roller unit for a treadmill or other areas of interest. ### Previous Patent Application: Treadmill having angle adjustable function Next Patent Application: Fitness bike Industry Class: Exercise devices ### FreshPatents.com Support Thank you for viewing the Universal roller unit for a treadmill patent info. IP-related news and info Results in 0.49868 seconds Other interesting Feshpatents.com categories: Accenture , Agouron Pharmaceuticals , Amgen , AT&T , Bausch & Lomb , Callaway Golf 174 |
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