Apparatus with adjustable base

Abstract

A base-adjustable apparatus includes a main device, a base plate attached on the underside of the main device and a pivot shaft. The main device defines at least two holes therebottom. The base plate has a front section defining a through hole and a rear section formed with at least one bolt to be received in the respective hole of the main device. The pivot shaft is rotatably received in the through hole of the base plate and extends outside the underside of the base plate. Moreover, the pivot shaft has one end fixed on the underside of the main device and the other end blocked outside the through hole. The length of the pivot shaft extends to such an extent that the pivot shaft together with the main body is allowed to be lifted up to a predetermined height limit higher than the bolt and be rotated.

1 . A base-adjustable apparatus comprising:
 a main device defining at least two holes in the underside thereof;   a base plate configured to be attached on the underside of said main device and having a front section defining a through hole therein and a rear section formed with at least one bolt thereon to be received in the respective one of said holes of said main device; and   a pivot shaft rotatably received in said through hole of said base plate and extending outside the underside of said base plate; said pivot shaft having one end fixed on the underside of said main device and the other end formed with a head having a width greater than the diameter of said through hole of said base plate to be blocked outside said through hole; and the length of said pivot shaft extends to such an extent that said pivot shaft together with said main body is allowed to be lifted up to a predetermined height limit higher than said bolt and be rotated.   
   
   
       2 . The base-adjustable device of  claim 1 , wherein said pivot shaft includes an elongated portion and a screw detachably engaged with said elongated portion in a line; said elongated portion has one end fixed on the underside of said main device and the other end defining a threaded hole therein for engagement with a threaded portion of said screw; and said screw has said head to be blocked outside said through hole of said base plate. 
   
   
       3 . The base-adjustable device of  claim 2 , wherein the rear section of said base plate is fork-shaped. 
   
   
       4 . The base-adjustable device of  claim 3 , wherein said base plate includes two pillars respectively formed on two distal ends of said fork-shaped rear section.