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| Number | Title | Issue Date |
| 7377500 | Shock absorbing device for moving body A shock absorbing device uses a damper including a cylinder enclosing a viscous fluid; a piston rod; and a piston dividing the interior of the cylinder in two axially separated parts. The piston is connected to the piston rod and has an orifice communicating the two... | 05/27/2008 |
| 7350836 | Door security system A security system for constraining the degree to which a door leaf (11) may be opened; the system being selectively activated from an inoperative position in which it does not block the opening and closing of the door leaf (11), into and out of an oper... | 04/01/2008 |
| 7293805 | Safety door central release device This invention relates to a type of safety door central release device which can be used to close the safety door automatically when electric power is disrupted. It comprises a cord that is tied to a mechanism having potential energy on one end, and extended to a fa... | 11/13/2007 |
| 7275284 | Damping device The invention relates to a damping device for parts of furniture which are joined together by means of hinges and which can be pivoted in relation to each other. The housing contains a damping fluid in the cavity thereof and a resistance element which can be displac... | 10/02/2007 |
| 7234201 | Door closer power adjusting device A door closer power adjusting device for a door closer having a spindle driven by a compressed spring with a movable plate for adjusting spring compression, or with a screw for adjusting spring compression, between a high and low level of compression. A powered unit... | 06/26/2007 |
| 7228595 | Anti-rattle door assembly An anti-rattle door assembly includes a first member and a second member. The first member includes a first base plate and a roller disposed on the first base plate. The second member is configured to receive the roller of the first member. The second member include... | 06/12/2007 |
| 7219391 | Door assembly with concealed door closer A door assembly and a door closer arranged and constructed so as to be wholly concealed within the associated door, yet is rendered readily accessible to effect the adjustment thereof to regulate or control the closing speed of the associated door. The door closer i... | 05/22/2007 |
| 7216400 | Door hold and release mechanism A door hold and release mechanism is provided including a housing mounted onto the pneumatic cylinder of a door check or closer having a piston rod extending from one end of the cylinder. The piston rod passes through an oversized hole in a drop stop which restricts... | 05/15/2007 |
| 7185398 | Mechanical door closer A mechanical door closer (10) that includes a spring (20) mounted in a track (13) to urge the door (11) to a closed position. A brake assembly (24) controls that rate at which the door (11) closes. The brake assembly (24 | 03/06/2007 |
| 7171911 | Mobile folding table having a lifting assist center torsion bar and lift off casters There is provided an apparatus for a folding table assembly comprising a lifting assist center torsion bar assembly, a lift off caster assembly and a stability locking mechanism. A folding table assembly with a lifting assist mechanism provides a lifting assist forc... | 02/06/2007 |
| 7155776 | Multipurpose hinge apparatus having automatic return function A multipurpose hinge apparatus having an automatic return function is provided in which the apparatus is installed between the door and a main body. The apparatus includes a driving mechanism for ascending and descending a piston rod according to opening and closing... | 01/02/2007 |
| 7152889 | Cable latching system A latching system includes a rotatable cam formed of substantially symmetric pieces with a cable, connected to oppositely disposed bolts, extending therethrough. The configuration of the cam is such that when rotated, the cable is pulled in both directions with resp... | 12/26/2006 |
| 7134168 | Door closer with pre-set stops A door closer comprises a cylinder with an extensible and retractable rod. The cylinder has a first end adapted to be secured to a door frame, while the rod has an outer end adapted to be connected to the door. The rod has a series of grooves along the length. A paw... | 11/14/2006 |
| 7118472 | Control system for pneumatically-powered door installation A mine door installation has a frame installed in a mine passageway. At least one door leaf is mounted on the frame for swinging movement between open and closed positions. Movement of the door leaf is powered by a pneumatic actuator. A pneumatically-powered control... | 10/10/2006 |
| 7111359 | Rod gripper A bar or rod gripper for arresting the linear axial movement of a rod, e.g. the piston rod of a door closure between a door open or closed position, that includes a compressible bushing slidably disposed about the rod or bar, and a canter washer disposed about the c... | 09/26/2006 |
| 7111358 | Tensioned pivot assembly A spring biased pivot assembly for operative connection across a lower edge of a self-returning door structure. An adjustable spacer projects outwardly from a downwardly extending shoulder structure and towards a tension pin in tangential relation to the axis of rot... | 09/26/2006 |
| 7007342 | Door closer The present invention relates to a door closer, in a housing of which is received a sliding cylinder, the sliding cylinder is provided with teeth on an outer periphery thereof for meshing with a gear wheel of a door shaft, a sliding cylinder interiorly formed with i... | 03/07/2006 |
| 7003851 | Hinge The movement of a hinge, preferably for furniture, comprising a hinge arm or a fixed-body hinge section and a pivotable hinge section flexibly connected thereto, is damped by a rotation damper at least damped over part of the closure path to the closed position. In ... | 02/28/2006 |
| 6976289 | Door closer with door arresting mechanism A door closer having a door arresting mechanism to arrest a door in an opened position that includes a cylinder and piston assembly wherein the arresting mechanism includes a cam member having an arresting dwell cam profile and an indexing profile, and an associated... | 12/20/2005 |
| 6938302 | Door closing mechanism A door closing mechanism, involving a shaft rod that moves in relation to, and is installed inside a tube unit. On the shaft rod is an open/close unit. ... | 09/06/2005 |
| 6938372 | Pneumatically-powered mine door installation with hydraulic checking system A mine door assembly has a frame. At least one door leaf is mounted on the frame for swinging movement between open and closed positions. Movement of the door leaf is powered by a pneumatic actuator. The door installation also has a hydraulic checking system for con... | 09/06/2005 |
| 6931693 | Damper mechanism A damper mechanism installed on an opening and closing device that has an arcuate plunger with the same radius of curvature of the cylinder it slidably mates with. A torsion coil spring causes the sliding action of the plunger into the cylinder in one direction.... | 08/23/2005 |
| 6910302 | Door hold open and controlled release mechanism A door hold open and controlled release mechanism is designed for usage in a doorway system having an inner door, an outer door and a door closer. It includes a catch mechanism and a catch release mechanism. The catch mechanism holds the outer door, typically a scre... | 06/28/2005 |
| 6904643 | Door closer hold-open apparatus The present invention relates to a hold-open apparatus for controlling the position of a door, preferably a screen door or storm door. The apparatus is used in conjunction with a piston assembly and can maintain a door in a predetermined open position, such as about... | 06/14/2005 |
| 6904642 | Closing device for gates and doors A closer device for a gate such as a swimming pool gate has relatively rotatable arms (for connection respectively to a gate and gate post), the arms being connected to a closer body having an axis parallel to the hinging axis of the gate on the gate post. The close... | 06/14/2005 |
| 6823927 | Pocket door with pivoting panel This invention discloses a pocket door. The pocket door is capable of pivoting on hinges between a fame that holds the pocket door and allows it to slide in and out of a pocket to open and close a passageway. More specifically, the pocket door is hinged to the movin... | 11/30/2004 |
| 6760954 | Door bumper An improved laterally resilient and displaceable mechanical door bumper for moving an elongated retractable shaft. The body or mold of the door bumper includes a base portion in which mounting screws are firmly anchored into the wood of the adjacent door portion. Th... | 07/13/2004 |
| 6684453 | Hinge assembly capable of damping door movement A hinge assembly includes a damping unit mounted on a securing seat that is connected to a door frame, a housing embedded in a door panel, and a hinge member and a positioning member interconnecting the securing seat and the housing. The damping unit incl... | 02/03/2004 |
| 6658695 | Door securing device A door securing device for securing screen door in an open position once it has been opened. The door securing device includes a housing comprising a perimeter wall. The perimeter wall defines an interior space of the housing. The housing is designed for ... | 12/09/2003 |
| 6634058 | Door closer with a reliable arresting effect A door closer comprises a cylinder and a piston rod mounted in the cylinder and having an exposed section outside the cylinder. A retainer plate, an elastic element, and an end cap are mounted around the exposed section of the piston rod. The retainer pla... | 10/21/2003 |
| 6553727 | Columbarium A columbarium for cremation remains constructed of at least one unit which includes a generally planar bottom surface and at least five vertical outer sides with each side having a corner. A cover supported by a plurality of walls which, along with said o... | 04/29/2003 |
| 6446305 | Rollerless door check mechanism A check mechanism for a motor vehicle door includes a housing secured to either the vehicle frame or the door and a check arm secured to the other one of the vehicle frame and the door. The door check extends into the housing through an opening in the hou... | 09/10/2002 |
| 6442795 | Damper for a pivot door A damper for a pivot door has a piston movably received inside the damper and having a first channel and a second channel respectively and selectively communicating with a space full of hydraulic oil, such that the movement of the piston is able to be slo... | 09/03/2002 |
| 6317922 | Door closer A door closer includes a cylinder and a piston sliding along the cylinder with a piston rod extending from the cylinder, with the closer mounting at one end to the door and at a second end to the door frame. The door closer has a speed adjustment know ext... | 11/20/2001 |
| 6298520 | Door closer and mounting bracket A door closer and mounting bracket for attaching the door closer to either the door or the door frame. The door closer includes two pins at one end for engaging corresponding holes on the mounting bracket and the mounting bracket includes a resilient clip... | 10/09/2001 |
| 6205615 | Door closer A door closer and mounting bracket for attaching the door closer to either the door or the door frame. The door closer includes a lip at one end for engaging a corresponding hook on the mounting bracket and a screw passageway at the other end for engaging... | 03/27/2001 |
| 6202253 | Storm door cylinder lock A cylinder lock door closure device. In an exemplary application, the cylinder lock door closure device includes a cylindrical housing, a piston assembly, an arm assembly, a cylindrical catch piece and a hard stop whereby when a door is opened past 90° o... | 03/20/2001 |
| 6167589 | Control mechanism including a permanent magnet system A control mechanism includes a set of permanent magnets located within a cylindrical housing, the magnets being carried on a shaft which extends within the housing and is movable axially relative to the housing. The magnets are arranged in repulsion confi... | 01/02/2001 |
| 6151753 | Door closer to generate a sudden change in the transmission ratio during the closing phase A door closer with a door piston, which door piston is acted on by a driven shaft during the opening of a door. The door piston has an extension attached to it. The door closer also can have a pressure piston and an energy storage mechanism which acts on ... | 11/28/2000 |
| 6125505 | Door closer and mounting bracket A door closer and mounting bracket for attaching the door closer to either the door or the door frame. The door closer includes a lip at one end for engaging a corresponding hook on the mounting bracket and a screw passageway at the other end for engaging... | 10/03/2000 |
