Class / Patent application number | Description | Number of patent applications / Date published |
016064000 | Spring and gear | 9 |
20090320236 | DOOR CLOSER - A door closer that integrally incorporates a door-opening-assistance device, and that therefore eliminates the need for unnecessary troublesome adjustment between parts, and whose number of parts is reduced, making said door closer compact. The door closer | 12-31-2009 |
20100031469 | Damped Closing Mechanism for automatic Shutting Pull Door - In a damped closing mechanism for automatic shutting pull door, a door closing mechanism includes a screw wheel to store restoring force, a change over device and a brake gear to produce a damping effect is integrally combined and equipped on the frame of a moving door panel. The brake gear is to alleviate the actuating force and moving speed of the door panel provided by the screw wheel. The change over device is capable of changing the damping effect of the brake gear to generate nearby the closing position of the door so as to alleviate colliding speed and impulse of the moving door panel with the door post when shutting without affecting the pulling of the door panel before closing. | 02-11-2010 |
20100281650 | DOOR HINGE FOR A HOUSEHOLD APPLIANCE - A door hinge for a household appliance, the household appliance including a body and a door, the door being movable about a horizontal axis between an approximately vertical closed position and an approximately horizontal opened position. The door hinge includes a housing couplable to the body, a door lever pivotably mountable on the door for movement about a main shaft, a weight compensating spring and a closing spring. The weight compensating spring holds the door approximately in a position of equilibrium when the door is opened and the closing spring applies a self-closing force shortly before the door reaches the closed position and applies a closure maintaining force when the door reaches the closed position. Further included is a dampening device that either counteracts a closing force or an opening force. | 11-11-2010 |
20120210540 | DOOR ACTUATOR - A power boost assembly is disclosed that can be used with a door actuator, such as a door closer. The power boost assembly is structured to store an energy during a first movement of a door and release the stored energy during a second movement of the door. In one form the power boost assembly can be structured as a module that can be added to an existing door and door closer installation. In one form the power boost assembly is used to increase a closing force imparted to a door to ensure a latching event. | 08-23-2012 |
20130180081 | OPENING DEVICE FOR A DOOR OF AN ARTICLE OF FURNITURE AND AN ASSEMBLY COMPRISING A HINGE AND THE OPENING DEVICE - An opening device for a door ( | 07-18-2013 |
20130219657 | RETRACTING DEVICE - Provided is a retracting device in which dampers have improved durability and strokes of operation of the dampers are not reduced. A first slider | 08-29-2013 |
20140304942 | CONCEALED DOOR CLOSER - A concealed door closer includes a housing, an input shaft and an output shaft, the input shaft being connected to a motor, wherein a joining member is arranged between the input shaft and the output shaft, and two ends of the joining member are respectively provided with an upper connection piece and a lower connection piece, which are connected to a roller via vertical rotation shaft, and wherein both the input shaft and the output shaft are provided with a left connection piece and a right connection piece, which are horizontally connected to the roller via a horizontal rotation shaft. The components in the door closer have a simple structure and may be easily processed and assembled. The size of the joint after assembly is equivalent to that of the joining member, so the overall size is small. | 10-16-2014 |
20150101147 | Unidirectional Centrifugal Mechanism of Door Operator - A rolling door operator comprises a rotary shaft, a centrifugal brake mechanism, and a unidirectional centrifugal mechanism, in which a latching tooth and plurality of slots are disposed around one end of the rotary shaft, and the unidirectional centrifugal mechanism includes an active pin with an axial latching face and a sliding face, the axial latching face being engaged with one of slots to latch the rotary shaft together only in the falling direction of a door curtain, and the sliding face having a bevel adjacent to the latching face to contact slidingly over the slots, so that the door curtain can be lifted up immediately in another direction, and without affecting normal opening function of the door curtain. | 04-16-2015 |
20150368951 | HINGE - A hinge has a pivot assembly and a holding assembly. The pivot assembly has a securing panel, a connecting seat, a pivot shaft, and two positioning sets. Each of the positioning sets has a positioning ball and a silencing positioning element filled with lubricating grease. The holding assembly has two holding sheets holding the pivot shaft. With the holding sheets and the pivot shaft abutting each other with tooth or embossed surfaces, friction between the holding sheets and the pivot shaft is increased. Thus, the pivot shaft and the holding sheets do not pivot relative to each other easily. The lubricating grease in the silencing positioning elements can be smeared on the positioning balls, such that the positioning balls can smoothly roll on the pivot shaft without abrasion and no noise will occur. | 12-24-2015 |