Wall hole patching device

Abstract

A device for patching and repairing a hole on a double-walled partition wall includes an umbrella-like element and a support frame. The umbrella-like element includes a stem provided at a rear end with external screw threads for a nut to screw thereto, and an umbrella-like front head fixed to a front end of the stem. The support frame includes two legs and a transverse bar extended between and held by the legs to a fixed distance from a wall surface having a wall hole to be patched. The transverse bar is provided with a long through hole, via which a rear end of the stem of the umbrella-like element is rearward extended. The umbrella-like front head may be forward extended beyond the wall hole to seal an inner end of the wall hole and thereby prevents patching material filled in the wall hole from rearward falling off the hole.

1 . A wall hole patching device, comprising:
 an umbrella-like element including a stem and an umbrella-like front head fixed to a front end of said stem, and said stem being provided on a rear end with external screw threads;   a support frame including at least two legs and at least one transverse bar extended between and supported by said at least two legs, such that said transverse bar is held by said legs at a fixed distance from a wall surface having a wall hole to be patched; and said transverse bar being provided at a predetermined position with a through hole, via which the rear end of said stem of said umbrella-like element is rearward extended; and   a nut for screwing to said externally threaded rear end of said stem of said umbrella-like element by different depths against said transverse bar of said support frame, so as to produce a rearward pull on said umbrella-like element.   
   
   
       2 . The wall hole patching device as claimed in  claim 1 , wherein said umbrella-like front head of said umbrella-like element is provided at an inner side with a plurality of radially arranged ribs. 
   
   
       3 . The wall hole patching device as claimed in  claim 1 , wherein said through hole provided on said transverse bar of said support frame is a long hole. 
   
   
       4 . The wall hole patching device as claimed in  claim 1 , wherein one of said legs of said support frame is provided at a predetermined position with a through hole, in which an end of said transverse bar is tightly fitted, such that said leg with said through hole is movable along said transverse bar when necessary. 
   
   
       5 . A wall hole patching device, comprising:
 an umbrella-like element including an umbrella-like front head and a long cord connected at a front end to a center of said umbrella-like front head; and   a support frame including at least two legs and at least one transverse bar extended between and supported by said at least two legs, such that said transverse bar is held by said legs at a fixed distance from a wall surface having a wall hole to be patched;   and said long cord having a rear end being wound around said transverse bar.   
   
   
       6 . The wall hole patching device as claimed in  claim 5 , wherein said transverse bar is provided at a predetermined position with a retaining slot, and said rear end of said long cord is wound around and set in said retaining slot to be held in place. 
   
   
       7 . The wall hole patching device as claimed in  claim 5 , further comprising a pipe, through which the rear end of said long cord is extended to wind around said transverse bar. 
   
   
       8 . The wall hole patching device as claimed in  claim 5 , wherein one of said legs of said support frame is provided at a predetermined position with a through hole, in which an end of said transverse bar is tightly fitted, such that said leg with said through hole is movable along said transverse bar when necessary. 
   
   
       9 . The wall hole patching device as claimed in  claim 5 , wherein said umbrella-like front head of said umbrella-like element is provided at an inner side with a plurality of radially arranged ribs.