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Class Information
Number: 209/458
Name: Classifying, separating, and assorting solids > Stratifiers > With liquid treatment > Stationary bed > Chutes and tables
Description: Stationary chutes or tables on which material with mingled liquid, accompanying or added, is so treated that the heaviest constituents of the material may settle as a stratum, while the lighter may form overlying strata or be carried off by the liquid.

Sub-classes under this class:

Class Number Class Name Patents
209/459 Annular, circular or spiral 48
209/460 With divergent or opposite travel 11

Patents under this class:

Patent Number Title Of Patent Date Issued
8678192 Gold cube Mar. 25, 2014
8616379 Removable support legs for use with gold prospecting sluice Dec. 31, 2013
7681738 Traveling wave arrays, separation methods, and purification cells Mar. 23, 2010
6814241 Reflux classifier Nov. 9, 2004
6752274 Log washer with staggered paddles Jun. 22, 2004
6336559 Spiral separator with replaceable trough sections Jan. 8, 2002
6138833 Placer gold mining method, placer gold mining boat used in this method, placer gold digging and separating method and system therefor, and placer gold separating method and system therefor Oct. 31, 2000
5868995 Dynamic mining system comprising hydrated multiple recovery sites and related methods Feb. 9, 1999
5785182 Portable finishing sluice Jul. 28, 1998
5749472 Dynamic mining system comprising hydrated multiple recovery sites and related methods May. 12, 1998
5617955 Dynamic-mining system comprising hydrated multiple recovery sites and related methods Apr. 8, 1997
5544756 Dynamic mining system comprsing hydrated multiple recovery sites and related methods Aug. 13, 1996
5500136 Simulated gold and gemstone mining operation Mar. 19, 1996
5287975 Continuous cycle apparatus for separating precious metals from concentrate Feb. 22, 1994
5108584 Apparatus for extrating heavy metals from ore Apr. 28, 1992
4863588 Riffle bars Sep. 5, 1989
4818375 Hydraulically operated different density particle sorting apparatus Apr. 4, 1989
4676891 Portable sluice Jun. 30, 1987
4614579 Hydraulically operated different density particle sorting process Sep. 30, 1986
4592833 Portable sluice box Jun. 3, 1986
4525270 Mineral separating process and apparatus Jun. 25, 1985
4483768 Apparatus for separating materials of small size Nov. 20, 1984
4371435 Placer mining sluice Feb. 1, 1983
4360424 Sluice box Nov. 23, 1982
4354778 Waterfall technique for removing settled coal solids from a storage facility Oct. 19, 1982
4328093 Device for separating granulated material from a fluid flow May. 4, 1982
4319985 Gold concentrator Mar. 16, 1982
4290527 Sluice construction Sep. 22, 1981
4273648 Quick miner's pan Jun. 16, 1981
4253943 Continuous flow classification and specific gravity separation apparatus Mar. 3, 1981
4199441 Placer mining sluice box apparatus and method Apr. 22, 1980
4157957 Splitter assembly having an adjustable gap width Jun. 12, 1979
4078997 Separation apparatus Mar. 14, 1978
3970551 Gold separator Jul. 20, 1976
3951787 Method and apparatus for separating gold and other heavy materials from ore Apr. 20, 1976
3950246 Dredge units Apr. 13, 1976
3950030 Underwater mining Apr. 13, 1976
3941690 Portable sluice pan Mar. 2, 1976

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