公开(公告)号：US11072904B2

公开(公告)日：2021-07-27

申请号：US16290486

申请日：2019-03-01

申请人： Hubbell Incorporated

发明人： Keith Alden Chudley ,  Lemuel David Fagan ,  Jason David Estes ,  Jeffrey Douglas Angelo

IPC分类号： E02D29/14 ,  B65D90/10 ,  B65D88/76 ,  E02D29/055 ,  B29C70/02 ,  B29B15/14 ,  B32B5/02 ,  C08J5/04 ,  C04B111/00

摘要： A cover for a utility vault and a method for making such covers. The cover is formed from fiberglass reinforcement layers and a polymer mix matrix. The reinforcement layers include a bottom reinforcement layer, one or more edge reinforcement layers, and a top reinforcement layer. A first portion of the edge reinforcement layer overlaps a portion of the bottom reinforcement layer and a second portion of the edge reinforcement layer overlaps a portion of the top reinforcement layer. The reinforcement layers are formed from fiberglass fabric and may include fiberglass layers whose fibers are oriented quadraxially. The polymer mix impregnates the fabric layers and forms the bulk of the cover. The polymer matrix bonds the reinforcement layers so that forces applied across the top and bottom layers are communicated to the edge reinforcement layer. The polymer matrix includes a thermoset polymer resin and an expanded glass bead filler.

公开(公告)号：US20210301491A1

公开(公告)日：2021-09-30

申请号：US17347490

申请日：2021-06-14

申请人： Hubbell Incorporated

发明人： Keith Alden Chudley ,  Lemuel David Fagan ,  Jason David Estes ,  Jeffrey Douglas Angelo

IPC分类号： E02D29/14 ,  B65D90/10 ,  B65D88/76 ,  E02D29/055 ,  B29C70/02 ,  B29B15/14

摘要： Disclosed is a cover for a utility vault and a method for making such covers. The cover is formed from fiberglass reinforcement layers and a polymer mix matrix. The reinforcement layers include a bottom reinforcement layer, one or more edge reinforcement layers, and a top reinforcement layer. A first portion of the edge reinforcement layer overlaps a portion of the bottom reinforcement layer and a second portion of the edge reinforcement layer overlaps a portion of the top reinforcement layer. The reinforcement layers are formed from fiberglass fabric and may include fiberglass layers whose fibers are oriented quadraxially. The polymer mix impregnates the fabric layers and forms the bulk of the cover. The polymer matrix bonds the reinforcement layers so that forces applied across the top and bottom layers are communicated to the edge reinforcement layer. The polymer matrix includes a thermoset polymer resin and an expanded glass bead filler.

公开(公告)号：US20190271134A1

公开(公告)日：2019-09-05

申请号：US16290486

申请日：2019-03-01

申请人： Hubbell Incorporated

发明人： Keith Alden Chudley ,  Lemuel David Fagan ,  Jason David Estes ,  Jeffrey Douglas Angelo

IPC分类号： E02D29/14 ,  B65D90/10 ,  B65D88/76 ,  E02D29/055 ,  B29B15/14 ,  B29C70/02

摘要： Disclosed is a cover for a utility vault and a method for making such covers. The cover is formed from fiberglass reinforcement layers and a polymer mix matrix. The reinforcement layers include a bottom reinforcement layer, one or more edge reinforcement layers, and a top reinforcement layer. A first portion of the edge reinforcement layer overlaps a portion of the bottom reinforcement layer and a second portion of the edge reinforcement layer overlaps a portion of the top reinforcement layer. The reinforcement layers are formed from fiberglass fabric and may include fiberglass layers whose fibers are oriented quadraxially. The polymer mix impregnates the fabric layers and forms the bulk of the cover. The polymer matrix bonds the reinforcement layers so that forces applied across the top and bottom layers are communicated to the edge reinforcement layer. The polymer matrix includes a thermoset polymer resin and an expanded glass bead filler.