Classifying – separating – and assorting solids – Sifting – Elements
Patent
1995-06-01
1997-09-09
Terrell, William E.
Classifying, separating, and assorting solids
Sifting
Elements
209405, 209408, B07B 149
Patent
active
056646852
ABSTRACT:
A screen support frame component is provided. The screen support frame component supports modular screening panels which are of a hard wearing synthetic plastics material such as polyurethane and are removably secured to the screen support frame component. Each of the screen support frame components includes a base which is elongate plate having a planar surface. A plurality of lugs are longitudinally spaced along the length of the base and project laterally on both sides of the base so that the planar surface of the base extends onto the laterally projecting lugs. A plurality of tubular spacer elements are provided on the base and on the lugs to project upwardly from the planar surface. Each tubular spacer element has a tubular side wall and one open axial end. It further has an annular shoulder inwardly of the open end, and a sloping face flaring outwardly towards the open end. The annular shoulder constitutes a securing formation for securing the screening panels to the screen support frame. The screen support frame components in accordance with the invention permits screening panels to be fitted in a screen without any of the screening apertures being blocked by underlying screen frame supports, this being achieved by mounting the screening panels to be spaced from the surface of the underlying screened frame supports. Screen support frame components according to the invention also permit conversion of existing screen supports by securing a plurality of the screen support frame components to an existing screen support frame.
REFERENCES:
patent: 4383919 (1983-05-01), Schmidt
patent: 5361911 (1994-11-01), Waites, Sr. et al.
patent: 5385242 (1995-01-01), Freissle
patent: 5464101 (1995-11-01), Freissle
Freissle Manfred Franz Axel
Nguyen Tuan
Terrell William E.
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