| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 016066000 | Pneumatic | 9 |
| 20100242225 | PNEUMATIC DOOR CLOSER - A pneumatic door closer which includes a cylinder which has a first end and an opposed second end; a piston which is slidingly engaged with the cylinder and which is biased towards the first end; a valve plug, a valve seat and a biasing member to bias the valve plug into sealing engagement with the valve seat to regulate the flow of air from the cylinder; and an adjustable assembly associated with the valve plug to vary the biasing force exerted on the valve plug thereby varying level of air pressure required inside the chamber before the valve plug is disengaged from the valve seat so that air is allowed to escape from the cylinder. | 09-30-2010 |
| 20110138573 | AIR PRESSURE INNER CIRCULATION-TYPE AUTOMATIC COMPENSATION CONTROL DOOR CLOSER - The present invention relates to a door closer, and particularly to an air pressure inner circulation-type automatic compensation control door closer, comprising a cylinder body and a telescopic rod, wherein a one-way air intake valve means is provided at the other end of the cylinder body to take in air in one way in an internal cavity of the cylinder body when the door is opened, at one end portion of the telescopic rod in the interior of the cylinder body is connected a regulating valve means wherein the gas in the cylinder body flows cyclically in the cavity of the cylinder body when the telescopic rod in a moving state, an inner cover sealing means is fixedly provided inside the end cap, and a large compression spring is provided in a cavity between the inner cover sealing means and the regulating valve means; the internal cavity of the cylinder body is divided into two automatically pressurizeable and automatically compensatable gas cavities through the inner cover sealing means, the regulating valve means and the air intake valve means; when the door is opened or closed, the gas inside the internal cavity of the cylinder body flows cyclically in the two gas cavities. The air control-type door closer ensures air substantially flows cyclically in a cylinder body, reduces pollution caused by dusts in air into and out of the cylinder body to the lubricant oil in the cylinder wall, guarantees the lubricating effect of the lubricant oil, enables the door closer to operate normally and effectively prolong the service life of the door closer. Besides, the door closer exhibits an excellent damping effect and a smaller noise when the door is closed. | 06-16-2011 |
| 20110219584 | FLOOR SPRING AND ASSEMBLY METHOD THEREOF - A floor spring includes a case, a damper assembly received in the case, and mixed powder tilling a space inside the case covering the damper assembly. The damper assembly includes a spindle extending outwardly from the case. The mixed powder can prevent water, dust, or insects enter the case, such that the damper assembly is not tend to rust or fail. | 09-15-2011 |
| 20120117755 | Door Closer - A door closer including a rotating shaft coupled to a door leaf, including a cam disposed on the rotating shaft in a torque-proof manner and cooperates with a spring-loaded roller, such that, when opening or closing the door leaf, the roller rolls on a first running surface of the cam, and in that a second running surface of the cam cooperates with a damping device. The damping device consists of at least one pre-mounted damper which is self-contained and is insertable into the door closer. | 05-17-2012 |
| 20120284962 | Door closer - A door closer includes a damping device having a cylindrical housing which has a compartment formed by an inclined inner peripheral surface and which includes a greater inner diameter at one end than the other end, a cap attached to the cylindrical housing and having an air perforation for an air to flow into and out of the cylindrical housing, a piston rod slidably engaged in the cylindrical housing, and a sleeve attached to the piston rod and having an outer diameter for engaging with the inner peripheral surface of the cylindrical housing at one end of the cylindrical housing, but not engaged with the inner peripheral surface at the other end of the cylindrical housing. | 11-15-2012 |
| 20150047149 | PULL-CLOSED DEVICE FOR A MOVABLY MOUNTED FURNITURE PART - A closing device for a furniture part having a carrier connected to the movable furniture part or the body part, and a closing lever which is impinged upon by a closing spring, the closing lever having a guide track for the carrier and being pivotable by the carrier when the movable furniture part is opened between a hold-closed position and a standby position, in which the carrier uncouples from the closing lever or which is stationary with respect to the movable furniture part for the carrier connected to the body part. A closing force is exerted by the closing lever onto the carrier as of a use position assumed by the carrier in the guide track. The distance of the carrier in the use position from the lever pivoting axis of the is at least 1.5 times the distance of the carrier in the closed position from the pivoting axis. | 02-19-2015 |
| 20160002966 | HORIZONTAL DOOR CLOSER STRUCTURE - The present invention provides a horizontal door closer structure, comprising an outer sleeve pipe and an inner pipe which can slide relatively, wherein an end of the outer sleeve pipe is provided with a buffer device, an adjustment component for adjusting total inlet and outlet air, and a buffer assembly are arranged on the buffer device; a spring is arranged in the inner pipe, one end of the spring is connected to the inner pipe, and the other end thereof is connected to the buffer device; and the front end of the outer sleeve pipe and an end of the inner pipe are provided with locating components which are mutually matched. In the door closer structure, the compression spring is arranged in the inner pipe, thereby saving the space of a door closer, and the adopted buffer device plays a buffering role by adjusting the total inlet and outlet air, and can control the speed of opening a door. | 01-07-2016 |
| 016067000 | Flexible link | 1 |
| 20100162522 | DAMPER DEVICE - It is an object of the present invention to provide a damper device which can facilitate an operation to incorporate it into a storage device including an openable/closable member. | 07-01-2010 |
| 016070000 | Spring and lever | 1 |
| 20150026922 | BRACKET DOOR CLOSER - A door closer is provided to automatically pull a storm or screen door to a fully closed position without user action. The door closer includes a bracket housing with a cam switch movable along a track as the door opens and closes. The closer cylinder rod is engaged with the cam switch until the door is fully opened. The cam switch biases the closer cylinder and rod as the door approaches the closed position. | 01-29-2015 |
