| US 10,981,197 B2 | ||
| Injection molded screening apparatuses and methods | ||
| Keith Wojciechowski, Lakeview, NY (US) | ||
| Assigned to DERRICK CORPORATION, Buffalo, NY (US) | ||
| Filed by Derrick Corporation, Buffalo, NY (US) | ||
| Filed on Jan. 15, 2020, as Appl. No. 16/743,516. | ||
| Application 15/851,099 is a division of application No. 15/201,865, filed on Jul. 5, 2016, granted, now 9,884,344, issued on Feb. 6, 2018. | ||
| Application 16/743,516 is a continuation of application No. 15/965,195, filed on Apr. 27, 2018, granted, now 10,576,502. | ||
| Application 15/965,195 is a continuation in part of application No. 15/851,099, filed on Dec. 21, 2017, granted, now 10,259,013, issued on Apr. 16, 2019. | ||
| Application 15/201,865 is a continuation of application No. 14/268,101, filed on May 2, 2014, granted, now 9,409,209, issued on Aug. 9, 2016. | ||
| Application 14/268,101 is a continuation in part of application No. 13/800,826, filed on Mar. 13, 2013, granted, now 10,046,363, issued on Aug. 14, 2018. | ||
| Claims priority of provisional application 62/648,771, filed on Mar. 27, 2018. | ||
| Claims priority of provisional application 61/714,882, filed on Oct. 17, 2012. | ||
| Claims priority of provisional application 61/652,039, filed on May 25, 2012. | ||
| Prior Publication US 2020/0156115 A1, May 21, 2020 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. B07B 1/46 (2006.01); B29C 45/00 (2006.01); B01D 29/01 (2006.01); B29C 65/16 (2006.01); B29D 28/00 (2006.01); B29K 75/00 (2006.01); B07B 1/48 (2006.01) | ||
| CPC B07B 1/4618 (2013.01) [B01D 29/012 (2013.01); B07B 1/46 (2013.01); B07B 1/4609 (2013.01); B07B 1/469 (2013.01); B07B 1/4645 (2013.01); B07B 1/4654 (2013.01); B07B 1/4663 (2013.01); B29C 45/0001 (2013.01); B29C 65/16 (2013.01); B29D 28/00 (2013.01); B07B 1/48 (2013.01); B29K 2075/00 (2013.01)] | 30 Claims |
| 1. A screening assembly, comprising: a subgrid framework including a plurality of subgrids; and
a plurality of screen elements secured to the plurality of subgrids such that the plurality of screen elements form a continuous screening surface,
wherein the plurality of subgrids and screen elements is configured to form an independent monolithic screening assembly that is a single structure configured to be secured to a vibratory screening machine; and wherein each screen element is a single thermoplastic injection molded piece.
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