Abstract: A pedal exerciser includes a worm shaft meshed with a worm wheel. A crank drives rotation of the worm wheel through two pedals. A rotary disc assembly is journaled to and rotatable with the worm shaft. The rotary disc assembly has a conductive member that is non-magnetizable and that is rotatable around an axis of the worm shaft. A magnetic assembly is disposed near the conductive member and has a magnet facing the conductive member. The magnet produces a drag force to resist an exercising force when the conductive member is rotated to move past the magnet. An adjustment assembly moves the magnetic assembly toward or away from the rotary disc assembly to vary the magnitude of the drag force.

Abstract: A pedal exerciser includes a worm shaft meshed with a worm wheel. A crank drives rotation of the worm wheel through two pedals. A rotary disc assembly is journaled to and rotatable with the worm shaft. The rotary disc assembly has a conductive member that is non-magnetizable and that is rotatable around an axis of the worm shaft. A magnetic assembly is disposed near the conductive member and has a magnet facing the conductive member. The magnet produces a drag force to resist an exercising force when the conductive member is rotated to move past the magnet. An adjustment assembly moves the magnetic assembly toward or away from the rotary disc assembly to vary the magnitude of the drag force.

Abstract: A foldable walker includes a front frame having sleeve tubes, two side frame units and two folding operating units. Each sleeve tube has an upwardly facing retaining portion around the upper periphery thereof. Each side frame unit has a front rod segment and an adaptor coaxially and rotatably mounted to the respective sleeve tube. Each folding operating unit is disposed within the adaptor and has a locking pin extending transversely and movably disposed to be engaged with or disengaged from the upwardly facing retaining portion, and a lock releasing member movably mounted on the adaptor at an upper opening and operable manually to move the locking pin to unlock the side frame unit relative to the front frame.

Abstract: A foldable walker includes a front frame having sleeve tubes, two side frame units and two folding operating units. Each sleeve tube has an upwardly facing retaining portion around the upper periphery thereof. Each side frame unit has a front rod segment and an adaptor coaxially and rotatably mounted to the respective sleeve tube. Each folding operating unit is disposed within the adaptor and has a locking pin extending transversely and movably disposed to be engaged with or disengaged from the upwardly facing retaining portion, and a lock releasing member movably mounted on the adaptor at an upper opening and operable manually to move the locking pin to unlock the side frame unit relative to the front frame.

Abstract: A foldable walker includes a front frame having left and right pin holes, two side frame units pivotably connected to the front frame, and two locking units. Each locking unit is disposed between the front frame and the respective side frame unit, and includes a lock releasing lever and a locking pin. The lock releasing lever has a pulling fulcrum portion, an operating portion opposite to the pulling fulcrum portion, and a pressing fulcrum portion disposed therebetween. An upwardly pulling action or a downwardly pressing action onto the operating portion permits rotation of the respective side frame unit between folded and unfolded positions. The locking pin is disposed between the pulling and pressing fulcrum portions to be inserted into the respective pin hole to lock the side frame units to the unfolded position, and is moved by the upwardly pulling action or the downwardly pressing action.

Abstract: A foldable walker includes a front frame having left and right pin holes, two side frame units pivotably connected to the front frame, and two locking units. Each locking unit is disposed between the front frame and the respective side frame unit, and includes a lock releasing lever and a locking pin. The lock releasing lever has a pulling fulcrum portion, an operating portion opposite to the pulling fulcrum portion, and a pressing fulcrum portion disposed therebetween. An upwardly pulling action or a downwardly pressing action onto the operating portion permits rotation of the respective side frame unit between folded and unfolded positions. The locking pin is disposed between the pulling and pressing fulcrum portions to be inserted into the respective pin hole to lock the side frame units to the unfolded position, and is moved by the upwardly pulling action or the downwardly pressing action.