Patent ID: 8827657

Claim:
A concrete pump system comprising: (a) material hopper (MHOP); (b) trapezoidal-shaped spectacle plate (TSSP); (c) hydraulic pump; (d) trapezoidal-shaped cutting ring (TSCR); and (e) ejection port; wherein said TSSP comprises a first trapezoidal inlet port (FTIP) and a second trapezoidal inlet port (STIP); said TSSP is attached to said MHOP and configured to supply concrete from said MHOP to said hydraulic pump through said FTIP and said STIP; said hydraulic pump comprises a first hydraulic pump ram (FHPR) and a second hydraulic pump ram (SHPR); said FHPR is configured to accept concrete via said FTIP; said SHPR is configured to accept concrete via said STIP; said TSCR comprises a trapezoidal receiver output port (TROP) configured to alternately traverse between positions that cover said FTIP and said STIP; said TROP is configured to completely cover said FTIP and said STIP during said alternating traversal between said positions that cover said FTIP and said STIP; said TROP is configured to direct concrete from said FTIP and said STIP to said ejection port; said hydraulic pump is configured to eject concrete from said FHPR into said TROP when said TROP is positioned to cover said FTIP; said hydraulic pump is configured to inject concrete from said MHOP into said SHPR when said TROP is positioned to cover said FTIP; said hydraulic pump is configured to eject concrete from said SHPR into said TROP when said TROP is positioned to cover said STIP; and said hydraulic pump is configured to inject concrete from said MHOP into said FHPR when said TROP is positioned to cover said STIP.