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Stationary exerciser

Stationary exerciser description/claims

1. Field of the Invention

The present invention relates to a stationary exerciser, and more particularly to a stationary exerciser including an improved structure for allowing the rear portion of the stationary exerciser to be moved in different moving strokes.

2. Description of the Prior Art

Typical stationary exercisers comprise a pair of foot supports or foot engaging links each having a rear end supported for rotational motion about a pivot axis and a front end guided in a reciprocal path of travel and for allowing the foot engaging links to move in an elliptical moving stroke.

For example, U.S. Pat. No. 5,242,343 to Miller discloses one of the typical stationary exercisers comprising a combination of foot link motions permitting the users foot to travel in an inclined, oval path of travel, and two foot engaging links each having a front end guided in a reciprocal path of travel.

However, the rear ends of the foot engaging links are guided to move in a circular moving path that is determined by the pair of rotatable cranks.

U.S. Pat. No. 5,759,135 to Chen discloses another typical stationary exerciser comprising a pair of tubes rotatably secured to two arms of a crank, and two levers slidably engaged in the tubes for allowing the tubes to move forward and rearward and upward and downward in an elliptical moving stroke.

However, the rear portions of the levers are pivotally secured to the supporting base with a pivot axle such that the rear portions of the levers may be pivoted relative to the supporting base, but may not be moved in different moving strokes relative to the supporting base.

U.S. Pat. No. 5,759,136 to Chen discloses a further typical stationary exerciser comprising a pair of beams each having a front end pivotally coupled to a post with a lever for swinging relative to the post, and a rear end supported for rotational motion about a pivot axis and for allowing the beams to move in an elliptical moving stroke.

However, the rear portions of the beams are rotatably secured to the rotary wheels with eccentric cranks and may only be guided to move in a circular moving path, but may not be moved in different moving strokes relative to the supporting base.

U.S. Pat. No. 6,135,926 to Lee discloses a still further typical stationary exerciser comprising a pair of foot supports each having a front end pivotally coupled to a rotatable crank and each having a rear end supported for swinging motion about an upper pivot rod and for allowing the foot supports to move in an elliptical moving stroke.

However, the rear portions of the foot supports may only be guided to move in a forward and rearward reciprocating action, but may not be moved in different moving strokes relative to the supporting base.

U.S. Pat. No. 7,041,036 to Kuo discloses a still further typical stationary exerciser comprising a pair of foot supports each having a front end pivotally coupled to a downwardly dependent bar with a complicated coupling mechanism and a rear end supported for rotational motion about a pivot axis and for allowing the beams to move in an elliptical moving stroke.

However, similarly, the rear portions of the foot supports are rotatably secured to the rear stay with eccentric cranks and may only be guided to move in a circular moving path, but may not be moved in different moving strokes relative to the supporting base.

The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional stationary exercisers.

The primary objective of the present invention is to provide a stationary exerciser including an improved structure for allowing the rear portion of the stationary exerciser to be moved in different moving strokes.

The other objective of the present invention is to provide a stationary exerciser including an improved structure for allowing the rear portion of the stationary exerciser to be adjusted to different moving strokes.

In accordance with one aspect of the invention, there is provided a stationary exerciser comprising a base including an upright support and an upright post extended upwardly therefrom, two handles each including an upper portion pivotally coupled to the upright support with a spindle for allowing the handles to be pivoted and swung relative to the upright support of the base, two foot supports each including a front portion and a rear portion, the front portions of the foot supports being coupled to the handles and arranged to be moved in a reciprocating action relative to the base, two cranks rotatably attached to the upright post of the base with an axle and each having a pivot rod attached thereto and spaced away from the axle, two links pivotally coupled between the pivot rods of the cranks and the rear portions of the foot supports respectively for allowing the rear portions of the foot supports to be swung relative to the cranks and the base, and a connecting device for connecting the foot supports to the cranks for determining a movement of the foot supports relative to the base.

The connecting device includes two levers having an upper end pivotally coupled to the upright post of the base with a pivot shaft, and each having a lower end pivotally coupled to the foot supports with beams, and each having a middle portion pivotally coupled to the cranks with pivot bars.

The cranks each include two crank segments and a rod secured between the crank segments and pivotally coupled to the middle portions of the levers with the pivot bars respectively.

The pivot bars are adjustably secured to the levers respectively. The levers each include a first orifice and at least one second orifice formed therein for adjustably securing the pivot bars respectively.

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• Utility Patent

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