Stationary exercise apparatus

1. A stationary exercise apparatus, comprising:

a. a frame having a base, a front, and a rear portion;

b. first and second supporting members, each supporting member having a first end portion and a second end portion, the first end portions of the first and second supporting members respectively coupled to the frame to rotate about a first axis;

c. a guider having a first end portion and a second end portion, the second end portion of the guider coupled to the base, the second end portions of the first and second supporting members engaged with the guider for reciprocating movement relative to the guider;

d. first and second pedals respectively coupled to the first and second supporting members;

e. a supporting bracket mounted on the frame, the supporting bracket having a plurality of receiving portions positioned therein; and

f. an actuating mechanism operably coupled to the first end portion of the guider, the actuating mechanism having an actuating grip and an engaging portion selective engaged with one of the receiving portions of the supporting bracket wherein the engaging portion is disengaged from the supporting bracket when the actuating grip thereof is moved relative to the guider.

2. The stationary exercise apparatus of claim 1 , wherein the actuating grip is pivotally connected to the first end portion of the guider via an axis.

3. The stationary exercise apparatus of claim 2 , wherein the actuating grip and the engaging portion of the actuating mechanism are on the same side relative to the axis.

4. The stationary exercise apparatus of claim 1 , wherein the engaging portion of the actuating mechanism is composed of a positioning pin movably coupled therein.

5. The stationary exercise apparatus of claim 1 , wherein the engaging portion of the actuating mechanism is composed of a positioning pin movably coupled therein, and wherein the positioning pin is moved in substantially the same direction with the actuating grip of the actuating mechanism when the actuating grip of the actuating mechanism is moved relative to the guider.

6. The stationary exercise apparatus of claim 1 , the stationary exercise apparatus further comprising a resilient member interconnected between the engaging portion of the actuating mechanism and the first end portion of the guider for biasing the engaging portion of the actuating mechanism into engagement with one of the receiving portions of the supporting bracket as the engaging portion of the actuating mechanism is disengaged therefrom.

7. The stationary exercise apparatus of claim 1 , the actuating mechanism further comprising a positioning member and a cross pin, the positioning member having a slot and the positioning member interconnected between the actuating grip and the engaging portion of the actuating mechanism, and the cross pin positioned within the slot of the positioning member to be movably coupled to the positioning member, the cross pin connected to the positioning pin, wherein the positioning member is pivotally connected to the first end portion of the guider via an axis, such that rotation of the positioning member about the axis moves the positioning member through an arc path, the positioning pin moves in a linear direction, and the cross pin moves with the positioning pin and relative to the slot.

8. A stationary exercise apparatus, comprising:

a. a frame having a base, a front, and a rear portion;

b. first and second supporting members, each supporting member having a first end portion and a second end portion, the first end portions of the first and second supporting members respectively coupled to the frame to rotate about a first axis;

c. a guider having a first end portion and a second end portion, the second end portion of the guider coupled to the base such that the first end portion of the guider is movable along an adjusting path, the second end portions of the first and second supporting members engaged with the guider for reciprocating movement relative to the guider;

d. first and second pedals respectively coupled to the first and second supporting members;

e. a supporting bracket mounted on the frame, the supporting bracket conforming to the adjusting path and a plurality of receiving portions positioned therein; and

f. an actuating mechanism having a positioning member pivotally mounted on the first end portion of the guider via an axis, an actuating grip connected to the positioning member, and a positioning pin mounted on the positioning member and operably engaged with the receiving portion of the supporting bracket wherein the positioning pin can be disengaged from the receiving portion and moved along the adjusting path of the supporting bracket while the actuating grip is rotated about the axis.

9. The stationary exercise apparatus of claim 8 wherein the actuating grip and the positioning pin of the positioning member are at opposite sides relative to the axis.

10. The stationary exercise apparatus of claim 9 , wherein the positioning pin is rotated in the same direction about the axis with the actuating grip of the positioning member when the actuating grip thereof is moved relative to the guider.

11. The stationary exercise apparatus of claim 9 , further comprising a resilient member interconnected between the positioning pin and the first end portion of the guider for biasing the positioning pin into engagement with one of the receiving portions of the supporting bracket as the positioning pin is disengaged therefrom.

12. The stationary exercise apparatus of claim 9 , the stationary exercise apparatus further comprising first and second control links respectively coupled to the first and second supporting members, each control link having a first end portion and a second end portion, the first end portions of the first and second control links movably coupled to the frame, the second end portions of the first and second control links respectively connected to the first and second pedals.