Mobile elevating hut

Abstract

The mobile, elevating hut has a trailer, a platform, legs connecting the platform to the trailer, and a lifter which can move the platform between a lowered and a raised position where the legs support the platform.

Claimed is:  
     
         1 . A mobile elevating hut comprising: 
 a trailer;    a platform;    a front leg connecting the platform to the trailer, the front leg being pivotally connected to a first platform point, the front leg being pivotally connected to a first trailer point;    a rear leg connecting the platform to the trailer, the rear leg being pivotally connected to a second platform point, the rear leg being pivotally connected to a second trailer point;    the first platform point, the first trailer point, the second platform point, and the second trailer point being at four vertices of a closed figure; and    a lifter, the lifter in use acting between the platform and the trailer, the lifter being adapted to lift the platform to a raised position where the force on the lifter caused by the platform is substantially zero.    
     
     
         2 . The product of  claim 1  wherein the closed figure is a parallelogram.  
     
     
         3 . The product of  claim 1  wherein the closed figure is not a parallelogram.  
     
     
         4 . The product of  claim 1  further comprising a lock, the lock in use acting between the trailer and the platform to restrain the platform.  
     
     
         5 . The product of  claim 1  wherein the lifter comprises a winch.  
     
     
         6 . A mobile elevating hut comprising: 
 a trailer;    a platform;    a front leg connecting the platform to the trailer, the front leg being pivotally connected to a first platform point, the front leg being pivotally connected to a first trailer point on the trailer;    a rear leg connecting the platform to the trailer, the rear leg being pivotally connected to a second platform point, the rear leg being pivotally connected to a second trailer point;    the first platform point, the first trailer point, the second platform point, and the second trailer point being at four vertices of a closed figure which is not a parallelogram; and    a lifter, the lifter in use acting between the platform and the trailer, the lifter being adapted to lift the platform to a raised position where the force on the lifter caused by the platform is substantially zero, the lifter being adapted to move the platform from the raised position toward the lifter and away from the lifter.    
     
     
         7 . A mobile elevating hut comprising: 
 a trailer;    the trailer having an upright, the upright in use being upstanding from the trailer;    a platform;    a first front leg connecting the platform to the trailer, the first front leg being pivotally connected to a first platform point, the first front leg being pivotally connected to a first trailer point;    a second front leg connecting the platform to the trailer, the second front leg being pivotally connected to a second platform point, the second front leg being pivotally connected to a second trailer point;    a first rear leg connecting the platform to the trailer, the first rear leg being pivotally connected to a third platform point, the first rear leg being pivotally connected to a third trailer point;    a second rear leg connecting the platform to the trailer, the second rear leg being pivotally connected to a fourth platform point, the second rear leg being pivotally connected to a fourth trailer point;    a winch, the winch in use acting between the platform and the trailer, the winch in use being adapted to lift the platform to a raised position where the force on the winch caused by the platform is substantially zero, the winch being adapted to move the platform from the raised position toward the winch and away from the winch; and    a lock, the lock in use acting between the trailer and the platform to restrain the platform.