Title:
INJECTION MOLDED SCREENING APPARATUSES AND THEIR METHODS OF MANUFACTURING
Document Type and Number:
WIPO Patent Application WO/2021/202683
Kind Code:
A3
Abstract:
A disclosed screening apparatus (10) includes a subgrid, and a screen element (81100) attached to the subgrid (8200) via laser welding at a plurality of attachment positions such that, under vibrational excitation, the screen element has a pre-determined profile of vibrational motion relative to the subgrid. The screen element may be attached at a maximal number of attachment locations to the subgrid to minimize relative motion of the screen element and the subgrid under vibrational excitation, or the screen element may be attached a sub-set of the maximal number of attachment locations to allow vibrational motion of the screen element relative to the subgrid. A disclosed method may include attaching a plurality of screen elements to a respective plurality of subgrids, attaching the plurality of subgrids to one another to form a screening pre-assembly, and cutting edges of the screening pre-assembly to form the screen assembly having a perimeter with a pre-determined shape.
Inventors:
COLGROVE JAMES (US)
WOJCIECHOWSKI KEITH (US)
WOJCIECHOWSKI KEITH (US)
Application Number:
PCT/US2021/025113
Publication Date:
November 25, 2021
Filing Date:
March 31, 2021
Export Citation:
Assignee:
DERRICK CORP (US)
COLGROVE JAMES (US)
COLGROVE JAMES (US)
International Classes:
B07B1/46; B07B1/54
Domestic Patent References:
| WO2021055822A2 | 2021-03-25 |
Foreign References:
| US20180312667A1 | 2018-11-01 |
Attorney, Agent or Firm:
MUELLER, Jason (US)
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