An exercise apparatus includes a cable that is extracted from a housing when the extraction force is sufficient to rotate a drum that is rotatably mounted within the housing. A brake material is sandwiched between the drum and at least one tension band to provide adjustable resistance to rotation of
An exercise apparatus includes a cable that is extracted from a housing when the extraction force is sufficient to rotate a drum that is rotatably mounted within the housing. A brake material is sandwiched between the drum and at least one tension band to provide adjustable resistance to rotation of the drum. A knob is rotated to adjust tension in the at least one tension band without affecting tension in the brake material. Indicia associated with rotation of the knob show changes in the resistance level as the knob rotates through more than one complete revolution relative to the housing.
대표청구항▼
1. An exercise apparatus, comprising: a frame;a drum rotatably mounted on the frame for rotation about an axis, wherein the drum defines a circumferential perimeter;at least one tension band disposed about at least a portion of the perimeter of the drum;a braking strip disposed between the tension b
1. An exercise apparatus, comprising: a frame;a drum rotatably mounted on the frame for rotation about an axis, wherein the drum defines a circumferential perimeter;at least one tension band disposed about at least a portion of the perimeter of the drum;a braking strip disposed between the tension band and the drum, wherein a first end of the braking strip is secured to the drum, and an opposite, second end of the braking strip rests on the circumferential perimeter of the drum;a tension adjustment mechanism interconnected between said at least one tension band and the frame, and operable to adjust tension in said at least one tension band; anda force receiving member operatively connected to the drum, wherein movement of the force receiving member is linked to rotation of the drum. 2. The exercise apparatus of claim 1, wherein the braking strip comprises a para-aramid synthetic fiber strap. 3. The exercise apparatus of claim 2, wherein said at least one tension band comprises at least one steel strap. 4. The exercise apparatus of claim 3, wherein the drum comprises at least one injection molded plastic part, and defines a radially extending slot that interrupts the perimeter of the drum and receives the first end of the para-aramid synthetic fiber strap. 5. The exercise apparatus of claim 1, wherein the perimeter of the drum defines at least one centering feature that encourages the second end of the braking strip to remain centered on the perimeter of the drum. 6. An exercise apparatus, comprising: a frame, wherein the frame includes a bracket sandwiched between a front housing and a rear housing;a drum rotatably mounted on the frame for rotation about an axis, wherein the drum defines a circumferential perimeter between the bracket and the front housing;at least one tension band disposed about the perimeter of the drum;a tension adjustment mechanism interconnected between said at least one tension band and the bracket, and operable to adjust tension in said at least one tension band; anda force receiving member operatively connected to the drum, wherein movement of the force receiving member is linked to rotation of the drum. 7. The exercise apparatus of claim 6, further comprising a sheave rotatably mounted on the frame for rotation about the axis, wherein the sheave is disposed between the bracket and the rear housing, and a flexible cord is interconnected between the sheave and the force receiving member. 8. The exercise apparatus of claim 7, wherein a central hole extends through the bracket, and the hole is relatively larger in diameter than the drum, and at least one bushing is disposed between the drum and the sheave. 9. The exercise apparatus of claim 6, further comprising a strap secured across an exterior side of at least one said housing, wherein the strap and the exterior side cooperate to form a closed loop about a person's hand when the exterior side is positioned in a person's hand. 10. The exercise apparatus of claim 9, wherein the bracket includes a first tab that projects outwardly through a first gap between the front housing and the rear housing, and a diametrically opposed, second tab that projects outwardly through a second gap between the front housing and the rear housing, and the strap is interconnected between the first tab and the second tab. 11. An exercise apparatus, comprising: a frame;a drum rotatably mounted on the frame for rotation about an axis, wherein the drum defines a circumferential perimeter;at least one tension band disposed about at least a portion of the perimeter of the drum;a tension adjustment mechanism interconnected between said at least one tension band and the frame, and operable to adjust tension in said at least one tension band, wherein the tension adjustment mechanism includes a bolt rotatably mounted on the frame, and a first portion of the bolt is threaded with right hand threads, and a second portion of the bolt is threaded with left hand threads, and a first nut is threaded onto the first portion of the bolt, bears against a first flat surface on the frame, and is fastened to a first end of said at least one tension band, and a second nut is threaded onto the second portion of the bolt, bears against a second flat surface on the frame, and is fastened to a second end of said at least one tension band, whereby rotation of the bolt in a first direction causes the first nut and the second nut to move toward one another, thereby reducing tension in said at least one tension band, and rotation of the bolt in an opposite, second direction causes the first nut and the second nut to move away from one another, thereby increasing tension in said at least one tension band; anda force receiving member operatively connected to the drum, wherein movement of the force receiving member is linked to rotation of the drum. 12. The exercise apparatus of claim 11, wherein said at least one tension band is a single tension band arranged to form a closed loop about the drum. 13. The exercise apparatus of claim 12, wherein a first portion of the single tension band has a reduced width, and a second portion of the single tension band defines a slot, and the reduced width inserts through the slot to form the closed loop about the drum. 14. The exercise apparatus of claim 11, wherein said at least one tension band includes a first tension band and a diametrically opposed, second tension band arranged to form a closed loop about the drum. 15. The exercise apparatus of claim 14, wherein a first portion of the first tension band has a reduced width, and a second portion of the first tension band defines a slot, and a first portion of the second tension band has a reduced width, and a second portion of the second tension band defines a slot, and the reduced width of the first tension band inserts through the slot in the second tension band, and the reduced width of the second tension band inserts through the slot in the first tension band, to form the closed loop about the drum. 16. The exercise apparatus of claim 14, wherein an end of the first tension band opposite said first end is fastened to the frame, and an end of the second tension band opposite said second end is fastened to the frame. 17. The exercise apparatus of claim 16, wherein at least one said end of each said tension band is fastened in place by two screws. 18. The exercise apparatus of claim 11, wherein linear travel of at least one said nut is monitored relative to the frame to indicate a relative level of current resistance to rotation of the drum. 19. The exercise apparatus of claim 18, wherein a knob is connected to the bolt, and rotation of the knob is monitored relative to the frame to indicate a relative level of current resistance to rotation of the drum. 20. The exercise apparatus of claim 19, wherein an indicator is movably mounted on the knob and selectively reoriented relative to the knob to recalibrate the relative level of resistance indicated by orientation of the knob relative to the frame.
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