Method for the manufacture of filter wells
First Claim
1. A method of producing a plastic filter well having a cavity defined by a bottom portion with an outlet and an upper part of a cylindrical wall portion extending upwardly from the bottom portion, said bottom portion supporting a filter provided on top of said outlet comprising:
- (i) forming the bottom portion having a supporting surface for the filter and an outlet opening;
(ii) applying the filter on the bottom portion so that the filter at least essentially covers the whole bottom portion; and
(iii) the forming the cylindrical wall portion having the upper part and a lower part, wherein the upper part of the cylindrical wall portion surrounds the cavity and the lower part of the cylindrical wall connects to said filter on said bottom portion, with the lower part of the cylindrical wall portion surrounding an outer edge of the filter and an upper edge of the bottom portion so that the bottom portion and the lower part of the cylindrical wall portion form a fused unit, the outer edge of the filter being fused into the lower part of the cylindrical wall portion of the plastic filter well.
2 Assignments
0 Petitions
Accused Products
Abstract
A filter well of plastic having a bottom portion with an outlet and supporting a filter provided on top of the outlet, which filter is well sealed against leakage of liquid, is produced by first forming a bottom portion having a supporting surface for the filter and an outlet opening. Thereafter, a filter is applied on the bottom portion so that it covers at least essentially the whole bottom portion. Then, the cylindrical wall portion of the filter well is formed against the bottom portion with the lower part of the wall portion surrounding the edge of the filter and the upper edge of the bottom portion so that the bottom and wall portions form a fused unit with the outer edge of the filter being fused into the filter well material.
38 Citations
9 Claims
-
1. A method of producing a plastic filter well having a cavity defined by a bottom portion with an outlet and an upper part of a cylindrical wall portion extending upwardly from the bottom portion, said bottom portion supporting a filter provided on top of said outlet comprising:
-
(i) forming the bottom portion having a supporting surface for the filter and an outlet opening; (ii) applying the filter on the bottom portion so that the filter at least essentially covers the whole bottom portion; and (iii) the forming the cylindrical wall portion having the upper part and a lower part, wherein the upper part of the cylindrical wall portion surrounds the cavity and the lower part of the cylindrical wall connects to said filter on said bottom portion, with the lower part of the cylindrical wall portion surrounding an outer edge of the filter and an upper edge of the bottom portion so that the bottom portion and the lower part of the cylindrical wall portion form a fused unit, the outer edge of the filter being fused into the lower part of the cylindrical wall portion of the plastic filter well. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
Specification