Connector for Filling Concrete Formworks

Abstract

A connector for pouring concrete into concrete formworks includes a piston tube and a filling port tube interconnected with each other and extending at an acute angle with respect to each other. The piston tube is mounted on the formwork or on a flange mountable on the formwork whereby a stopper piston axially movable in the piston tube may form a flush seal on an inside surface of a formwork element. A control unit including a spindle moves the stopper piston to close off a passage between the filling port tube and the piston tube. A quick connect coupling is supported on the filling port tube for connection to a concrete feed line.

1 . A concrete filling connector for connection to a formwork for pouring concrete into said formwork, said connector comprising:
 a piston tube having one end arranged to form a flush seal on a formwork element;   a stopper piston movable within said piston tube and having an end wall facing said formwork;   a control unit for moving said stopper piston within said piston tube;   a filling port tube connected to said piston tube adjacent said one end and extending at an acute angle with respect to said piston tube such that concrete poured into said filling port tube may flow through said piston tube and into said formwork; and   said stopper piston is movable within said piston tube whereby said end wall of said stopper piston may form a flush seal with a surface of said formwork.   
   
   
       2 . The connector set forth in  claim 1  wherein:
 said stopper piston includes a sidewall which is operable to close an opening between said piston tube and said filling port tube when said end wall forms said flush seal.   
   
   
       3 . The connector set forth in  claim 1  wherein:
 said control unit includes an adjustment device for adjusting a limit position of said stopper piston in said piston tube such that said stopper piston may move past said one end of said piston tube.   
   
   
       4 . The connector set forth in  claim 1  wherein:
 said filling port tube includes a quick connect coupling disposed on one end of said filling port tube for coupling and decoupling a concrete feed line.   
   
   
       5 . The connector set forth in  claim 1  wherein:
 said connector includes a flange for releasably connecting said connector to said formwork.   
   
   
       6 . The connector set forth in  claim 1  wherein:
 said connector is fixed to said formwork by welding said piston tube to said formwork.   
   
   
       7 . The connector set forth in  claim 1  wherein:
 said piston tube and said stopper piston have a cylindrical cross sectional shape.   
   
   
       8 . The connector set forth in  claim 7  wherein:
 said filling port tube has a cylindrical cross sectional shape.   
   
   
       9 . The connector set forth in  claim 1  wherein:
 said control unit includes spindle rotatable to advance said piston tube, said spindle being driven by one of a manual drive and a motor drive.   
   
   
       10 . The connector set forth in  claim 1  including:
 an amorphous seal formed by a grease film disposed between said stopper piston and said piston tube.   
   
   
       11 . The connector set forth in  claim 1  wherein:
 said end wall of said stopper piston includes an exchangeable die plate forming an end surface of said stopper piston.   
   
   
       12 . A concrete filling connector for connection to a formwork for pouring concrete into said formwork, said connector comprising:
 a piston tube having one end arranged to be directly adjacent a formwork element;   a stopper piston movable within said piston tube and having an end wall facing said formwork;   a control unit for moving said stopper piston within said piston tube;   a filling port tube connected to said piston tube adjacent said one end and extending at an acute angle with respect to said piston tube;   an opening formed between said piston tube and said filling port tube such that concrete poured into said filling port tube may flow through said piston tube and into said formwork; and   said stopper piston includes a sidewall which is operable to close said opening between said piston tube and said filling port tube.   
   
   
       13 . The connector set forth in  claim 12  wherein:
 said control unit includes an adjustment device for adjusting a limit position of said stopper piston in said piston tube such that said stopper piston may move past said one end of said piston tube.   
   
   
       14 . The connector set forth in  claim 12  wherein:
 said connector includes a flange for releasably connecting said connector to said formwork.   
   
   
       15 . The connector set forth in  claim 12  wherein:
 said connector is fixed to said formwork by welding said piston tube to said formwork.   
   
   
       16 . The connector set forth in  claim 12  wherein:
 said end wall of said stopper piston includes an exchangeable die plate forming an end surface of said stopper piston.   
   
   
       17 . A concrete filling connector for connection to a formwork for pouring concrete into said formwork, said connector comprising:
 a piston tube having one end arranged to form a flush seal on a formwork element;   a stopper piston movable within said piston tube and having an end wall facing said formwork;   a control unit including a spindle rotatable for moving said stopper piston within said piston tube, said control unit including an adjustment device for adjusting a limit position of said stopper piston in said piston tube;   a filling port tube connected to said piston tube adjacent said one end and extending at an angle with respect to said piston tube such that concrete poured into said filling port tube may flow through an opening between said piston tube and said filling port tube and through said piston tube into said formwork; and   said stopper piston is movable within said piston tube to control the flow of concrete to said formwork.   
   
   
       18 . The connector set forth in  claim 17  wherein:
 said connector includes a flange for releasably connecting said connector to said formwork.   
   
   
       19 . The connector set forth in  claim 17  wherein:
 said piston tube, said stopper piston and said filling port tube each have a cylindrical cross sectional shape.   
   
   
       20 . The connector set forth in  claim 17  wherein:
 said end wall of said stopper piston includes an exchangeable die plate forming an end surface of said stopper piston.