Angle-adjustable rowing exerciser

An angle-adjustable rowing exerciser, which includes a wheeled base frame, a fixed mattress and a pivoted mattress supported on the base frame, a transverse frame bar pivotally mounted on the base frame at the bottom, two handlebars respectively adjustably connected to two adjustable ratchet connectors at the ends of the transverse frame bar for turning by hand to rotate the transverse frame bar, and two actuating bars perpendicularly and fixedly connected to the transverse frame bar and forced to tilt the base frame or the movable mattress up and down upon turning of the handlebars.

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What the invention claimed is:

1. An angle-adjustable rowing exerciser comprising:

a base frame equipped with rollers for moving on the floor;

a first mattress fixedly mounted on said base frame at one end;

a second mattress for supporting the user on said base frame, said second mattress having one end pivoted to a middle part of said base frame adjacent to said first mattress by a pivot;

a transverse frame bar transversely pivoted to said base frame below said second mattress, said transverse frame bar having two distal ends extended out of two opposite lateral sides of said base frame;

two handlebars respectively connected to the two distal ends of said transverse frame bar for turning by hand to rotate said transverse frame bar; and

two actuating bars perpendicularly and fixedly connected to said transverse frame bar, said actuating bars each having a distal end mounted with a roller.

2. The angle-adjustable rowing exerciser of claim 1 wherein said transverse frame bar comprises two adjustable ratchet connectors respectively disposed at the two distal ends thereof and connected to said handlebars to hold said handlebars inone of a series of angular positions relative to said transverse frame bar.

3. The angle-adjustable rowing exerciser of claim 1 wherein said base frame set holes at the side of said second mattress. The holes can insert a bar to confine the inclined angle of said actuating bars.