Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
196 words
A screening apparatus, particularly for screening valuable materials, domestic garbage, industrial garbage, bulky garbage, dry garbage, wet garbage, compost and/or problematic and dangerous materials, comprising: inclined, open-ended bars capable of oscillatory movement arranged in a transport direction and forming at least two bar grating screens forming a stepped arrangement of bar grating with one screen located behind the other in the transport direction, wherein said bar grating screens (12,13) have bars (16) that are tapered in the transport direction; said apparatus further comprising: means forming an inlet portion (14) and a preliminary distributor path (15) for feeding in material upstream of at least the upper bar grating screen (12) of said stepped arrangement; a screen frame (11) accommodating said bar grating screens (12,13) and said means forming the inlet portion (14) and the preliminary distributor path (15), said inlet portion (14) and said preliminary distributor path (15) comprising approximately 1/3 of the entire length of said screening apparatus; rubber oscillating elements on which said screen frame (11) is mounted; and eccentric drive means (22,23) for causing said screen frame (11) to perform a circular oscillating movement with a large circular oscillating diameter of approximately 100 mm.
Claim 2
Dependent Claim
196 words
A screening apparatus, particularly for screening valuable materials, domestic garbage, industrial garbage, bulky garbage, dry garbage, wet garbage, compost and/or problematic and dangerous materials, comprising: inclined, open-ended bars capable of oscillatory movement arranged in a transport direction and forming at least two bar grating screens forming a stepped arrangement of bar grating with one screen located behind the other in the transport direction, wherein said bar grating screens (12,13) have bars (16) that are tapered in the transport direction; said apparatus further comprising: means forming an inlet portion (14) and a preliminary distributor path (15) for feeding in material upstream of at least the upper bar grating screen (12) of said stepped arrangement; a screen frame (11) accommodating said bar grating screens (12,13) and said means forming the inlet portion (14) and the preliminary distributor path (15), said inlet portion (14) and said preliminary distributor path (15) comprising approximately 1/3 of the entire length of said screening apparatus; rubber oscillating elements on which said screen frame (11) is mounted; and eccentric drive means (22,23) for causing said screen frame (11) to perform a circular oscillating movement with a large circular oscillating diameter of approximately 100 mm.
Claim 3
Dependent Claim
24 words
A screening apparatus as claimed in claim 1, wherein said bars (16) exhibit a prismatic cross-section (25), with a free grating cross-section widening downwards.
Claim 4
Dependent Claim
32 words
An apparatus as claimed in claim 2, wherein said bars (16) have a trapezoidal cross-section (25) which have in their lower region (26) projections (28) protruding into the free grating cross-section (27).
Claim 5
Dependent Claim
28 words
An apparatus as claimed in claim 1, including a preliminary distributor path (19) for the lower bar grating screen (13) arranged beneath said upper bar grating screen (12).
Claim 6
Dependent Claim
31 words
An apparatus as claimed in claim 1, wherein the ratio of the support width of the screen bar (16) to its cantilvever length is in the range between 1:50 and 1:100.
Claim 7
Dependent Claim
18 words
An apparatus as claimed in claim 1, wherein said bars (16) exhibit the cross-section of a T-shaped profile.
Claim 8
Dependent Claim
20 words
An apparatus as claimed in claim 1, wherein said bars (16) run in a zigzag shape in the transport direction.