An extension base for an exercise apparatus includes a stationary seat that is attached to a bottom of a frame of the exercise apparatus and defines therein a channel; and two extension legs that are inserted into the channel of the stationary seat from two openings at two ends of the stationary sea
An extension base for an exercise apparatus includes a stationary seat that is attached to a bottom of a frame of the exercise apparatus and defines therein a channel; and two extension legs that are inserted into the channel of the stationary seat from two openings at two ends of the stationary seat, so that the extension legs can be extended or retracted with respect to the stationary seat. When the extension legs are fully retracted into the stationary seat, a distance between the outer ends of the two extension legs farthest away from each other is still long enough to support the elliptical exerciser and prevent it from falling. The extension base solves the problem that the conventional exercise apparatus tends to rollover when its base is removed.
대표청구항▼
1. An extension base for an exercise apparatus, the exercise apparatus having a frame that carries a flywheel for providing loading, and two treadles connected to the flywheel from two sides through respective cranks, so that when the two treadles are treaded, the flywheel provides resistance, and t
1. An extension base for an exercise apparatus, the exercise apparatus having a frame that carries a flywheel for providing loading, and two treadles connected to the flywheel from two sides through respective cranks, so that when the two treadles are treaded, the flywheel provides resistance, and the extension base comprising: a stationary seat, being attached to a bottom of the frame, and being of a tubular structure that has a channel and has openings at two ends of the channel; andtwo extension legs, each having an appropriate length and being inserted into the channel from the two openings, respectively, so that the extension legs can be symmetrically extended and retracted with respect to the stationary seat, wherein when the extension legs are fully retracted into the stationary seat, a distance between outer ends of the two extension legs farthest away from each other is still long enough to support an elliptical exerciser and prevent the elliptical exerciser from falling, each of the extension legs has a slot in a segment thereof retractable into the channel, the slot extending in a direction parallel to a direction in which the extension leg moves, the stationary seat having two retaining portions corresponding to the slots of the extension legs, extension of the extension legs with respect to the stationary seat being limited by retaining portions moving in the slots, so as to prevent the extension legs from leaving the stationary seat. 2. The extension base of claim 1, wherein the distance between the outer ends of the two extension legs farthest away from each other when the extension legs are fully retracted into the stationary seat is smaller than or equal to a distance between outer ends of the two treadles farthest away from each other. 3. The extension base of claim 1, wherein the stationary seat has two positioning pins corresponding to the two extension legs inserted therein, and the positioning pins position the corresponding extension legs at an extended or retracted position of the extension legs so as to retain the extension legs to the stationary seat. 4. The extension base of claim 3, wherein each of the extension legs has a plurality of positioning holes formed therein, and each of the positioning pins is a pull pin, which comprises a trunk, a spring member contained in the trunk, and a pin biased by the spring member, in which the trunk is configured to be combined with the stationary seat and make the pin biased by the spring member push an end portion thereof into the channel, so that the pin is inserted in a selected one of the plurality of positioning holes of a corresponding one of the extension legs until the pin is pulled out and leaves the selected positioning hole. 5. The extension base of claim 4, wherein the trunk of each of the pins is externally combined with a knob, in which when the pin associated thereto is received in selected one of the plurality of positioning holes, the knob is configured to be screwedly engaged with the trunk so as to make the pin stay in the selected positioning hole and prevent the pin from unintentionally pulling up, and when the knob is unscrewed from the trunk, the pin is no longer be retained and can be pulled out.
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이 특허에 인용된 특허 (6)
Mojden Daniel R. (5519 S. Garfield Hinsdale IL 60521), Adjustable exercise apparatus.
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