公开(公告)号：US08449216B2

公开(公告)日：2013-05-28

申请号：US13236823

申请日：2011-09-20

申请人： Kevin S. Vrondran ,  Scott B. Beal ,  David E. Fuller ,  Dennis E. Webb ,  Jeremy I. Johnson

发明人： Kevin S. Vrondran ,  Scott B. Beal ,  David E. Fuller ,  Dennis E. Webb ,  Jeremy I. Johnson

IPC分类号： E02D29/14

CPC分类号： E02D29/1463

摘要： A manhole cover assembly includes a frame that includes a central opening and a safety stop portion, and a cover hingedly attached to the frame such that the cover is pivotable between a closed position covering the central opening and an open position providing access to the central opening. A safety device is connected to the frame and the cover for locking the cover in the open position. Movement of the cover to the open position automatically moves the safety device to a locked position in which said safety device engages the safety stop portion and prevents movement of the cover to the closed position. When the cover is open, the safety device is manually movable between the locked position and an unlocked position in which the safety device is disengaged from the safety stop and permits movement of the cover to the closed position.

摘要翻译： 井盖组件包括框架，该框架包括中心开口和安全止动部分，以及铰接地附接到框架的盖，使得盖可在覆盖中心开口的关闭位置和打开位置之间枢转，从而提供通向中心开口 。 安全装置连接到框架和盖子上，用于将盖子锁定在打开位置。 将盖子移动到打开位置将自动地将安全装置移动到锁定位置，在该位置，所述安全装置与安全停止部分接合并防止盖子移动到关闭位置。 当盖打开时，安全装置可手动地在锁定位置和解锁位置之间移动，在该解锁位置，安全装置与安全挡板脱离，并允许盖移动到关闭位置。

公开(公告)号：US20130071183A1

公开(公告)日：2013-03-21

申请号：US13236823

申请日：2011-09-20

申请人： Kevin S. Vrondran ,  Scott B. Beal ,  David E. Fuller ,  Dennis E. Webb ,  Jeremy I. Johnson

发明人： Kevin S. Vrondran ,  Scott B. Beal ,  David E. Fuller ,  Dennis E. Webb ,  Jeremy I. Johnson

IPC分类号： E02D29/14

CPC分类号： E02D29/1463

摘要： A manhole cover assembly includes a frame that includes a central opening and a safety stop portion, and a cover hingedly attached to the frame such that the cover is pivotable between a closed position covering the central opening and an open position providing access to the central opening. A safety device is connected to the frame and the cover for locking the cover in the open position. Movement of the cover to the open position automatically moves the safety device to a locked position in which said safety device engages the safety stop portion and prevents movement of the cover to the closed position. When the cover is open, the safety device is manually movable between the locked position and an unlocked position in which the safety device is disengaged from the safety stop and permits movement of the cover to the closed position.

摘要翻译： 井盖组件包括框架，该框架包括中心开口和安全止动部分，以及铰接地附接到框架的盖，使得盖可在覆盖中心开口的关闭位置和打开位置之间枢转，从而提供通向中心开口 。 安全装置连接到框架和盖子上，用于将盖子锁定在打开位置。 将盖子移动到打开位置将自动地将安全装置移动到锁定位置，在该位置，所述安全装置与安全停止部分接合并防止盖子移动到关闭位置。 当盖打开时，安全装置可手动地在锁定位置和解锁位置之间移动，在该解锁位置，安全装置与安全挡板脱离，并允许盖移动到关闭位置。