Patent ID: 7258313
Filing Date: 2007-08-21
Classification: A47L,D06F,F16M,F25D,Y10T

Abstract:
1. A method of leveling an object comprising: (a) providing at least two bearing-less leveling devices each consisting essentially of: a housing having a base portion, a top portion, and a substantially hollow portion; an elevation shaft having thread and a longitudinal axis, the elevation shaft being disposed at least partially within the hollow portion; a worm gear having teeth disposed within the housing, at least one end of the worm gear having an extension protruding out from the housing and configured to receive a tool to facilitate rotation of the worm gear; a driven gear disposed within the hollow portion having internal threads engaged with the threads of the elevation shaft and external gear teeth engaged with the teeth of the worm gear; means for retaining the driven gear within the hollow portion; and means for restraining the elevation shaft from rotating relative to the housing, whereby upon rotation of the worm gear in opposite directions and concomitant rotations of the driven gear, the elevation shaft is caused to move axially up or down; (b) providing a tool configured to operably engage the at least one end of the worm gear extending out from the housing; (c) providing an object to which the at least two leveling devices are mounted, the object providing access for the tool to engage the at least two leveling devices; (d) engaging the tool with the extension of the at least one end of the worm gear protruding out from the housing of one of the at least two leveling devices; and (e) rotating the worm gear of one of the at least two leveling devices with the tool to raise or lower the object.