Classifying – separating – and assorting solids – Stratifiers – With liquid treatment
Patent
1996-01-03
2000-08-01
Nguyen, Tuah B.
Classifying, separating, and assorting solids
Stratifiers
With liquid treatment
209490, 209494, B03B 552
Patent
active
06095342&
ABSTRACT:
A gold pan (20) and classifying device for separating granular materials of varying specific gravities of generally rectangular shape including two substantially vertical side walls (21), two sloping side walls (22) with laminated plate (24) and edge (25) construction, a gold concentrating trap (33) at the bottom of the four walls with volume of less than one tenth of one percent of total pan volume, a bottom opening (23) and seal (28) for removal of gold concentrates from the concentrating trap (33) through the pan bottom while waste materials are retained in the pan (20). The unique design enables even a beginner to achieve proficiency in minutes while processing much more material than previously possible with existing pans, either with or without the assistance of a liquid medium and with little or no potential for losing fine gold.
REFERENCES:
patent: 32115 (1861-04-01), Brock
patent: 37758 (1863-02-01), Kendall, Sr.
patent: 585989 (1897-07-01), Sletcher
patent: 634120 (1899-10-01), Moore
patent: 646382 (1900-03-01), Collins
patent: 664066 (1900-12-01), Tobin
patent: 667969 (1901-02-01), Campbell
patent: 799059 (1905-09-01), Johansen
patent: 923392 (1909-06-01), White
patent: 1064853 (1913-06-01), Ord
patent: 1064854 (1913-06-01), Ord
patent: 1192806 (1916-07-01), Weigand
patent: 1292364 (1919-01-01), Ord
patent: 1419405 (1922-06-01), Ord
patent: 1444752 (1923-02-01), Ord
patent: 1948797 (1934-02-01), Nicolai
patent: 1966359 (1934-07-01), Ryan
patent: 1972645 (1934-09-01), Danills
patent: 2630226 (1953-03-01), Streng
patent: 3059776 (1962-10-01), Smith
patent: 3855119 (1974-12-01), Stephenson
patent: 3899418 (1975-08-01), Lawrence et al.
patent: 4162969 (1979-07-01), Lagel
patent: 4273648 (1981-06-01), Legg
patent: 4289241 (1981-09-01), Litrap
patent: 4319994 (1982-03-01), Morgan
patent: 4400269 (1983-08-01), Gordon, Jr.
patent: 4671868 (1987-06-01), Ottrock
patent: 5190158 (1993-03-01), Remias
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