公开(公告)号：US20190292829A1

公开(公告)日：2019-09-26

申请号：US16359780

申请日：2019-03-20

Applicant: Life Door, Inc.

Inventor： Joel Sellinger ,  Benjamin Wesley Docksteader

IPC: E05F15/611 ,  E05F1/00 ,  E05F3/22 ,  E05F15/77

Abstract: An apparatus comprising a baseplate configured to be coupled to a door configured to be positioned in an open door position, a closed door position, and a plurality of door positions in between the open position and closed position; a motor; a circuitry electrically coupled to the motor and configured to be in communication with a remote computing device; at least one proximity sensor electrically coupled to the circuitry and configured to determine the door position with respect to a door frame; a drive wheel coupled to the motor and the circuitry, the drive wheel comprising an external surface, the external surface of the drive wheel configured to rotatably contact a ground surface; and wherein the motor is configured to be remotely activated by the remote computing device to engage the drive wheel to rotatably contact the ground surface to reposition the door responsive to receipt of a signal.

公开(公告)号：US20180305969A1

公开(公告)日：2018-10-25

申请号：US15867628

申请日：2018-01-10

Applicant: Life Door, Inc.

Inventor： Benjamin Wesley Docksteader ,  Joel Sellinger

IPC: E05F15/72 ,  E05F1/12 ,  G08B3/10

CPC classification number: E05F15/72 ,  E05F1/12 ,  E05Y2201/41 ,  E05Y2201/434 ,  E05Y2201/462 ,  E05Y2201/474 ,  E05Y2201/484 ,  E05Y2201/618 ,  E05Y2201/638 ,  E05Y2201/654 ,  E05Y2201/668 ,  E05Y2201/722 ,  E05Y2400/612 ,  E05Y2400/66 ,  E05Y2600/46 ,  E05Y2900/132 ,  E05Y2900/134 ,  G08B3/10

Abstract: An emergency door closing device that can be installed upon existing doors and hinges to automatically close doors in the response to smoke and fire. The improvements incorporated therein include a hinge cam pivot member that attaches to an existing hinge member of a door and produces a moment force about the existing hinge member allowing a reduced force necessary to pivot the door into a closed position. Further, a novel spring, cam, and lever system is incorporated to activate the moment force to close the door.

公开(公告)号：US10808447B2

公开(公告)日：2020-10-20

申请号：US15867628

申请日：2018-01-10

Applicant: Life Door, Inc.

Inventor： Benjamin Wesley Docksteader ,  Joel Sellinger

IPC: E05F15/20 ,  E05F15/72 ,  E05F1/12 ,  G08B3/10

Abstract: An emergency door closing device that can be installed upon existing doors and hinges to automatically close doors in the response to smoke and fire. The improvements incorporated therein include a hinge cam pivot member that attaches to an existing hinge member of a door and produces a moment force about the existing hinge member allowing a reduced force necessary to pivot the door into a closed position. Further, a novel spring, cam, and lever system is incorporated to activate the moment force to close the door.

公开(公告)号：US20200224482A1

公开(公告)日：2020-07-16

申请号：US16608774

申请日：2018-04-25

Applicant: Life Door, Inc.

Inventor： Joel Sellinger ,  Benjamin Wesley Docksteader

IPC: E05F15/72 ,  E05F1/12 ,  G08B3/10

Abstract: An apparatus comprises a base plate configured to be coupled to a door, the door configured to be positioned in an open position and a closed position; a closing mechanism coupled to the base plate and configured to be coupled to a hinge of the door and having an unprimed state and a primed state, the closing mechanism configured to be transitioned between the unprimed state and the primed state by a user; wherein in the unprimed state the closing mechanism is decoupled from operation of the door; and in the primed state the closing mechanism is configured to move the door into the closed position responsive to receipt of a signal, and the closing mechanism is configured to allow movement of the door between the open position and the closed position in absence of the signal.