Patent ID: 7517304

Claim:
An exercise apparatus for exercising against a resistance comprising an extension arm extending along an extension axis and having a resistance-bearing cable running therealong for bearing resistance for an exercise routine, said extension arm having a swivel pulley mounted thereto, said cable being trained around said pulley, said pulley being swivelable about a swivel axis coincident with said extension axis, said pulley having a pulley wheel rotatable about a rotation axis normal to said swivel axis, said cable feeding out in one direction of rotation of said pulley wheel and taking up in the opposite direction of rotation of said pulley wheel, said pulley having a shank extending along said swivel axis and mounted to said arm by a bearing housing supporting and locating said shank and secured to said arm to support said pulley for swiveling about said swivel axis along said shank, wherein said arm is hollow, including at an end thereof, and said hollow arm guides said cable therethrough, including through said hollow end, and wherein said bearing housing is a cartridge insertable into said hollow end of said arm along an insertion direction coincident with said extension axis and said swivel axis, and comprising a rotation-limiter disk captured by said cartridge in anti-rotation relation about said swivel axis, said shank extending through said disk for rotation therein about said swivel axis, said shank having a shoulder engaging said disk in detent relation permitting rotation of said shoulder relative to said disk only along a limited arc, to limit rotation of said shank and said pulley wheel to a restricted arc about said swivel axis.