초록 ▼

An exercise machine such as a rowing machine has a resistance system which consists of a fluid cylinder interconnected at one end to the movable block of a block and tackle which is selected to have a desired mechanical advantage to provide the desired resistance to movement of machine operation mea

An exercise machine such as a rowing machine has a resistance system which consists of a fluid cylinder interconnected at one end to the movable block of a block and tackle which is selected to have a desired mechanical advantage to provide the desired resistance to movement of machine operation means such as the handle of the rowing machine. Adjustment structure provides for variable or adjustable resistance to movement of the block and tackle structure.

대표청구항 ▼

A rowing exercise machine comprising: track means for supporting a user; support means attached to said track means to support said track means on a support surface; seat means slidably adapted to said track means for movement thereon, said seat means being sized to support a sitting user thereon; o

A rowing exercise machine comprising: track means for supporting a user; support means attached to said track means to support said track means on a support surface; seat means slidably adapted to said track means for movement thereon, said seat means being sized to support a sitting user thereon; operation means positioned and adapted to said track means for grasping and operation by the user sitting on said seat means to perform rowing type exercises; a resistance system adapted to said track means and to said operation means to resist movement of said operation means, said resistance system including: resistance means for providing resistance to movement of said operation means, said resistance means having a first end secured to said track means and a second end; block and tackle means to operate said resistance means, said block and tackle means having a first block adapted to said second end of said resistance means and a second block operably aligned with and interconnected to said first block by line means to obtain a mechanical advantage, one of said first block and second block having multiple pulleys interconnected by said line means to a pulley of the other of said first block and said second block, said line means being laced about said pulley and said multiple pulleys and having a lead extending alternatively and selectively from said first and second blocks to interconnect to said operation means for movement of said first block by said operation means, and said line means connected at only one end to said operation means.