Mould for small hollow building block with toothed surface and wedged ribs

Application Number: 00113525
Application Date: 2000.07.01
Publication Number: 1331004
Publication Date: 2002.01.16
Priority Information:
International: B28B7/16
Applicant(s) Name: Zhou Yiqing
Inventor(s) Name: Zhou Yiqing;Zhou Zhijuan;Ma Guiying
Patent Agency Code: 43118
Patent Agent: liu yimin
Abstract A mould for shaping small hollow building block with toothed surfaces and wedge ribs for sound insulation, thermal insulating and osmosis prevention is composed of an external mould and 5 internal cores. It features that the inner surfaces of external mould are toothed and a pair of perforated central cores and three rectangular perforated cores are arranged in the external mould. The ribs are arranged between perforated cores for easy demoulding.