Universal roller unit for a treadmill

• US 20060160666A1
• Filed: 01/18/2005
• Published: 07/20/2006
• Est. Priority Date: 01/18/2005
• Status: Abandoned Application

• Current Assignee: Leao Wang
• Original Assignee: Leao Wang
• Inventors: Wang, Leao
• Application Number:
  US11/036,703
• Publication Number:
  US 20060160666A1
• Time in Patent Office: Days
• US Class Current: 482/54
• CPC Class Codes: A63B 2071/025 on rollers or wheels
• CPC Class Codes: A63B 22/02 with movable endless bands , e.g. treadmills other training appliances for running on the spot A63B69/0028
• CPC Class Codes: A63B 2210/50 Size reducing arrangements for stowing or transport

Abstract

A universal roller unit for a treadmill having a supporting frame and a platform. The supporting frame includes a front and a rear bar at the bottom thereof. A roller is pivotally connected to both ends of the front bar. A universal roller unit is attached to the middle part of the rear bar. When the treadmill is in a flat operational position, the universal roller unit may be attached to the side wall of the rear bar; when the treadmill is in a folded storage position, the universal roller unit may be pushed outwards to allow the universal roller to contact with the ground so that the universal roller and the rollers take the responsibility of supporting the whole weight of the treadmill and move the treadmill stably and freely in any direction.

Claims

1. A universal roller unit for a treadmill having a supporting frame and a platform, the platform being hinged on the supporting frame in a folded storage and a flat operational position, the supporting frame having a front and a rear bar at the bottom thereof, a roller being pivotally connected to both ends of the front bar, a universal roller unit being attached to the middle part of the rear bar,

whereby, when the treadmill is in a flat operational position, the universal roller unit may be attached to the side wall of the rear bar;

when the treadmill is in a folded storage position, the universal roller unit may be pushed outwards to allow the universal roller to contact with the ground so that the universal roller and the rollers take the responsibility of supporting the whole weight of the treadmill and move the treadmill stably and freely in any direction.

2. The universal roller unit for a treadmill as claimed in claim 1 wherein the universal roller unit comprising:

a) an angle iron attached to the side wall of the rear bar in cooperation with a fastening element and a compression pin;

b) a compression pin passing through a borehole in the rear bar, the compression pin having different outer diameters, the borehole also having different inner diameters at both ends thereof so that an unexpected detachment of the compression pin from the borehole can be avoided; and

c) a universal roller in cooperation with a pivot and two spring elements pivotally connected to a positioning ear under the borehole of the rear bar, whereby, in the ordinary state, the universal roller is upwardly swiveled to contact with a corresponding end of the compression pin.