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US 2018/0328092 A1Published application
Automatic door stopping-closing device and door
AssigneeCmech (Guangzhou) Ltd.
InventorJia Sen Qiu
Life of this patent
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AssigneeCmech (Guangzhou) Ltd.
InventorJia Sen Qiu
Estimating the term…
An automatic door stopping-closing device comprises a cylinder with a connecting rod, one end of which is connected to a door; a bracket assembly on the door frame, comprising a hook connected with the other end of the rod, a movable lug cooperated with the hook, and a pull rod cooperated with the movable lug, wherein the pull rod and the hook can be engaged or disengaged. After the door is opened, the door can be kept open securely through the cooperation between the hook and the movable lug; and the door can be closed automatically by a slight push, through the cooperation between two of the hook, the movable lug and the pull rod. The automatic door stopping-closing device holds the door open without external force after the door is opened, and closes the door automatically after a slight push.
A door closer device for controlling closing of a door mounted in a door frame, comprising:
A method of controlling closing of a door mounted in a door frame using a closer including a cylinder pivotally mounted to the door, a bracket fixed to the door frame, an extendable and retractable rod with a first end in the cylinder and a second end pivotally connected to the bracket, and a pivotal lug and a sliding member in the bracket, the method comprising:
A method of controlling positions of a hinged door, comprising:
Dependencies are inferred from the claim text.