Hopper with measuring guide

Details Hopper with measuring guide Hopper with measuring guide

2011-01-11

2011-01-11

Griffin, Walter D (Department: 1774)

Agitating

With test, signal, or indicator means

C073S427000, C215S366000

Reexamination Certificate

active

07866880

ABSTRACT:
A hopper for measuring a predetermined amount of aggregate. The hopper has a body having an open top and plurality of walls, at least one guide extending between at least two of the plurality of walls, and an indicator to provide indication that the hopper contains a first and a second predetermined volume of aggregate.

REFERENCES:
patent: 129330 (1872-07-01), Foote
patent: 1478751 (1923-12-01), MacLean
patent: 1700773 (1929-02-01), Miller
patent: 1848959 (1932-03-01), Longenecker
patent: 1986864 (1935-01-01), Tolley
patent: 4157769 (1979-06-01), Radel
patent: 4940335 (1990-07-01), Gibson
patent: 5425329 (1995-06-01), Pollock
patent: 5605397 (1997-02-01), Oberg et al.
patent: 6817242 (2004-11-01), Moran
patent: 6905048 (2005-06-01), Harris
patent: 2002/0196701 (2002-12-01), Mastbrook

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