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Foldable treadmillRelated Patent Categories: Exercise Devices, Involving User Translation Or Physical Simulation Thereof, Treadmill For Foot TravelFoldable treadmill description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070191190, Foldable treadmill. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a foldable treadmill, and more particularly to a foldable treadmill having an improved structure for allowing the treadmill to be easily folded to an upwardly erecting or folding position and to be easily folded to a downwardly horizontal working position. [0003] 2. Description of the Prior Art [0004] Typical foldable treadmills comprise a handle device extended upwardly from a seat or vertically supported on the seat, and a tread base having a front portion pivotally attached to the seat or the handle device for allowing the tread base to be rotated or folded relative to the seat or the handle device between an upwardly erecting or folding position and a downwardly horizontal working position. [0005] For example, U.S. Pat. No. 6,015,368 to Clem et al. discloses one of the typical foldable treadmills also comprising a treadmill frame having a front portion pivotally or rotatably attached to a carriage, and a lifting and motorized structure coupled between the treadmill frame and the carriage for rotating or folding the treadmill frame relative to the carriage between an upwardly erecting or folding position and a downwardly horizontal working position. [0006] However, the treadmill frame includes a long integral structure that the motorized lifting structure has to spend more or great energy to rotate or to fold the treadmill frame relative to the carriage. In addition, when the treadmill frame is rotated or folded relative to the carriage, the center of gravity of the treadmill will be offset from the carriage such that the treadmill will be unstable and may have a good chance to fall down. [0007] U.S. Pat. No. 6,811,518 to Lin discloses another typical foldable treadmill also comprising a tread base having a front portion pivotally or rotatably attached to a seat, and a power driving device coupled between the tread base and the seat for rotating or folding the tread base relative to the seat. [0008] However, similarly, the tread base also includes a long integral structure that the power driving device also have to spend more or great energy to rotate or to fold the tread base relative to the seat. In addition, when the tread base is rotated or folded relative to the seat, the center of gravity of the treadmill will be offset from the seat such that the treadmill will be unstable and may have a good chance to fall down. [0009] The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional foldable treadmills. SUMMARY OF THE INVENTION [0010] The primary objective of the present invention is to provide a foldable treadmill including a structure for allowing the treadmill to be easily folded to an upwardly erecting or folding position and to be easily folded to a downwardly horizontal working position. [0011] The other objective of the present invention is to provide a foldable treadmill including a foldable two-part tread base for preventing the center of gravity of the treadmill from being offset from the seat and for allowing the treadmill to be retained or maintained in a stable structure and to be prevented from falling down when the tread base is rotated or folded relative to the seat. [0012] In accordance with one aspect of the invention, there is provided a foldable treadmill comprising a seat, and a two-part tread base including a front carriage pivotally attached to the seat with a pivot axle for allowing the carriage to be rotated relative to the seat with the pivot axle, and including a rear treadmill frame pivotally secured to the carriage for allowing the treadmill frame to be rotated and folded relative to the carriage, and the carriage is foldable and engageable with the seat for lowering a center of gravity of the treadmill and for preventing the treadmill from falling down when the treadmill frame is rotated relative to the carriage and the seat. [0013] A spring biased latch may further be provided for selectively latching the treadmill frame to the carriage and for stably supporting the treadmill frame to the carriage at an upwardly erecting and folding position. The spring biased latch is disposed in the treadmill frame and biased to selectively engage with the carriage. [0014] The treadmill frame includes a beam having a hollow space to receive the spring biased latch. The treadmill frame includes a bracket disposed in the beam, the spring biased latch is disposed in the bracket. The treadmill frame includes a hand grip coupled to the spring biased latch for disengaging the spring biased latch from the carriage. [0015] The two-part tread base includes at least one supporting device coupled between the treadmill frame and the carriage for supporting the treadmill frame at an upwardly erecting and folding position relative to the carriage. [0016] A rotating device may further be provided for rotating the carriage relative to the seat. The rotating device includes a motorized threaded member rotatably disposed in the seat, a follower threaded onto the threaded member and movable and adjustable along the threaded member when the threaded member is rotated relative to the seat, and a stand coupled between the carriage and the follower. [0017] The stand includes at least one roller slidably engaged with the seat for guiding the stand to move relative to the seat. The seat includes at least one tube having a bore for slidably receiving the roller of the stand. [0018] The seat includes a channel formed in the tube and communicating with the bore of the tube, the stand includes a panel, the roller is pivotally attached to the panel with a pivot pin and the pivot pin is slidably engaged in the channel of the tube. [0019] The two-part tread base includes a detecting device for detecting a relative angular position between the carriage and the treadmill frame. The detecting device is attached to the carriage, and an actuating device is attached to the treadmill frame and moved in concert with the treadmill frame, and the actuating device is rotatable relative to the carriage and the detecting device by rotating the treadmill frame relative to the carriage. [0020] A threaded member is rotatably disposed in the seat, a follower is threaded onto the threaded member and coupled to the carriage, the follower is movable and adjustable along the threaded member when the threaded member is rotated relative to the seat, and a motor is coupled to the threaded member for rotating the threaded member, and the actuating device is coupled to the motor for actuating the motor. [0021] Further objectives and advantages of the present invention will become apparent from a careful reading of the detailed description provided hereinbelow, with appropriate reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS Continue reading about Foldable treadmill... Full patent description for Foldable treadmill Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Foldable 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 Foldable treadmill or other areas of interest. ### Previous Patent Application: Foldable step exerciser Next Patent Application: Gymnastic machine Industry Class: Exercise devices ### FreshPatents.com Support Thank you for viewing the Foldable treadmill patent info. 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