Patent ID: 8251625

Claim:
A cement anchor for installation in a bore in a light weight construction panel ( 100 ), the cement anchor including a cylindrical body ( 10 ), at least one piston body ( 50 , 150 ) disposed in the cylindrical body ( 10 ) and forming therein a displacement chamber ( 36 ) which is filled with a flowable cement ( 8 ), and closed by a front end of the piston body ( 50 , 150 ) the cylindrical body ( 10 ) having a lower end area ( 22 ) and an upper end area ( 21 ), at least one flow control edge ( 34 , 134 ) formed in the cylindrical body ( 10 ), the cylindrical body ( 10 ) and the piston body ( 50 , 150 ) defining jointly a cement discharge opening for at least one cement flow channel ( 73 , 173 ) extending from adjacent the front end ( 72 ) of the piston body ( 10 ) along the piston and cylindrical bodies to at least one of the lower and upper end areas ( 22 , 21 ) of the cylindrical body ( 10 ) for conducting, upon movement of the piston body ( 10 ) past the flow control edge ( 34 , 134 ) during insertion of the piston body ( 50 , 150 ) into the cylindrical body ( 10 ), cement from the displacement chamber ( 36 ) to at least one of the lower and upper end areas ( 22 , 21 ) for solidification in the respective end area ( 22 , 21 ) and locking the piston body ( 50 , 150 ), the cylindrical body ( 10 ) and the whole anchor in place in the light weight construction panel.