Concrete pump with pivotable hopper asssembly

Details Concrete pump with pivotable hopper asssembly Concrete pump with pivotable hopper asssembly

2004-05-28

2008-12-09

Kramer, Devon C (Department: 3746)

Pumps

Expansible chamber type

Plural pumping chambers

C417S454000, C417S516000, C417S517000, C417S533000, C417S900000

Reexamination Certificate

active

07462020

ABSTRACT:
A concrete pump with a pivoting valve and hopper assembly is provided with a novel wear plate and wear ring. The wear plate is mounted on the frame of the pump and remains mounted on the frame as the valve and hopper assembly pivots between open and closed positions. When the valve and hopper assembly is open, the wear plate is accessible for examination and replacement. The hopper is provided with an opening through which the wear plate extends when the valve and hopper assembly is closed. A seal on the hopper around the opening sealingly engages the frame. A wear ring on the valve engages the wear plate when the valve and hopper assembly is closed. A cam plate on each side of the frame is engageable with the valve and hopper assembly as the assembly pivots to a closed position to ensure alignment between the valve and hopper assembly and the frame.

REFERENCES:
patent: 3612730 (1971-10-01), Reinert
patent: 3897180 (1975-07-01), Reinert
patent: 3963385 (1976-06-01), Caban
patent: 4241641 (1980-12-01), Reinert
patent: 4345883 (1982-08-01), Westerlund et al.
patent: 4563135 (1986-01-01), Riker
patent: 4614483 (1986-09-01), Hudelmaier
patent: 4653990 (1987-03-01), Schlecht
patent: 4869655 (1989-09-01), Powers et al.
patent: 5857490 (1999-01-01), Kao
patent: 6305916 (2001-10-01), Reinert
patent: 6308916 (2001-10-01), Reinert
patent: 6338615 (2002-01-01), Hurr et al.
patent: 2003/0215344 (2003-11-01), Condon et al.

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