Patent ID: 7066046
Filing Date: 2006-06-27
Classification: F16H,Y10T

Abstract:
1. A single speed reducer, comprising: a first solid block of metallic construction; a second solid block of metallic construction having a common width, height, and thickness as said first solid block; said first solid block and said second solid block forming a speed reducer housing when disposed in confronting relation to one another; a worm cavity formed in said speed reducer housing; a worm disposed in said worm cavity; said worm mounted on a worm shaft in off-center relation to said worm shaft so that said worm shaft has an elongate part and a truncate part; a worm gear cavity formed in said speed reducer housing; a worm gear disposed in said worm gear cavity in meshing relation to said worm; said worm gear mounted on a worm gear shaft; a worm gear shaft opening formed in said second solid block to receive said worm gear shaft; a worm shaft bore formed in said speed reducer housing, said worm shaft bore being discontinuous at said worm cavity and having a first part extending from said worm cavity to a first edge wall of said speed reducer housing and having a second part extending from said worm cavity to a second edge wall of said speed reducer housing; said worm shaft having a first position where said elongate part of said worm shaft extends outwardly from a first side of said speed reducer housing and where said truncate part of said worm shaft is disposed interiorly of said speed reducer housing; said worm shaft having a second position where said elongate part of said worm shaft extends outwardly from a second side of said speed reducer housing and where said second truncate part of said worm shaft is disposed interiorly of said speed reducer housing; an outer end of said worm shaft adapted to engage an output shaft of a motor means so that said output shaft rotates said worm shaft and hence said worm, and said worm rotates said worm gear and hence said worm gear shaft; whereby said worm cavity is only slightly larger than said worm; whereby said worm gear cavity is only slightly larger than said worm gear; and whereby gear lash and end play are controlled.