Sieve having substantially plane sieve sheets and a method for its manufacture
AssigneeElfo AG Sachseln
InventorsAlbert Greutert, Ernst Stumvoll
Life of this patent
Estimating the term…
Abstract
A sieve sheet having radially extending separating slots in order to subdivide the area of the sieve sheet into sieve segments. The separating slots are embedded with plastics material. The sieve segments may be arranged in a configuration differing slightly from a plane, thus stiffening the sieve.
Claims11
A sieve having at least one substantially planar sieve surface comprising:
- a sieve sheet defining the planar sieve surface and including slots extending through the sheet and dividing the sheet into a plurality of sieve sheet sections, the slots being arranged so that the sections can be deflected out of their common plane;
- and a plastic material filling the slots, securing to each other portions of the sections adjoining the slots and maintaining the sections deflected out of their common plane by a relatively minor amount.
A sieve comprising a substantially planar sieve sheet defined by a plurality of adjoining sheet sections, the sections being normally disposed in a common plane and defining a plurality of slots between opposing edges of adjacent sections, the slots converging at a common point and extending from the point towards the periphery;
- and a homogenous plastic material disposed in and filling the slots and further surrounding a periphery of the sheet, the plastic material in the slots and the plastic material surrounding the periphery being anchored to the sheet and deflecting the sheet sections by a minor amount from said common plane.
A sieve comprising a substantially planar sieve sheet defined by a plurality of adjoining sheet sections, each pair of adjoining sections defining a slot between opposing edges of such adjoining sections, the slots of the sieve converging towards a common center point and extending from such point towards a periphery of the sieve defined by the sections;
- a plastic material disposed in each slot, anchored to the edges of the adjoining sections and deflecting the edges of the sections by relatively minor amounts out of their common plane so that the sieve sheet is substantially rigidified and effectively resists deformation and warping of the sieve sheet out of its substantially planar configuration.
A substantially planar sieve including an integrally constructed, tubular container attached thereto comprising:
- a substantially planar sieve sheet defined by a plurality of adjoining sheet sections, the sections defining a plurality of slots between opposing edges of adjacent sections, the slots converging towards a common point and extending from the point outwardly thereof towards a periphery of the sieve sheet;
- a plastic material disposed in and filling the slots, anchored to opposing edges of adjacent sections, and maintaining the opposing edges inclined relative to the plane of the sheet by a relatively minor amount so as to define with the sheet sections a plurality of relatively inclined surfaces, the inclination of which is substantially undiscernible to a user of the sieve, whereby the inclination of the sieve sheet section surfaces resists deformation and increases the rigidity of the sieve;
- and additional plastic material defining said tubular container extending substantially peripendicularly away from the sieve sheet, anchored to the sieve sheet along the periphery thereof, and connected with the plastic material in the slots.
Dependencies are inferred from the claim text.