| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 297303100 | Adjustable resistance | 13 |
| 20090015048 | TILTING FITTING FOR A CHAIR - A tilting fitting device enables a chair seat to be tiltable forwards and backwards against spring force of tilt-resisting springs, the tilting fitting having an upper part that is fastenable to the chair seat and a lower part that is fastenable to a chair base and tiltably connected to the upper part, wherein the tilting resistance is adjustable by adjusting spacing between the tilt-resisting springs and distance of each spring from a respective side of a tilting axis for the upper part. An actuating element is arranged for simultaneous engagement with two support members, an actuating element, along a part of each of its two sides in the element's direction of motion. On movement of the actuating element in the longitudinal direction of the tilting axis, it is adapted to cause rotation of the support members and springs mounted thereon, thereby changing the spacing of the springs. | 01-15-2009 |
| 20090302655 | Device for Adjusting the Reclining Force in Office Chair Mechanisms - A device for adjusting the reclining force in office chair mechanisms comprising at least two mutually hinged parts and elastic means ( | 12-10-2009 |
| 20090302656 | Preference Control Mechanism - A preference control mechanism is provided that includes a housing, a shuttle, a sub shuttle and at least one resilient member. The housing has a channel. The shuttle has a cavity. The shuttle is moveable within the channel of the housing from a first position to at least one second position. The sub shuttle is moveable within the channel of the housing and is moveable independent of the shuttle. The one or more resilient members have a first end and a second end opposite the first end. The first end is attached to the shuttle and the second end is attached to the sub shuttle. The preference control mechanism is configured for attachment to at least one chair component. Chairs may also be designed to include one or more embodiments of the preference control mechanism. | 12-10-2009 |
| 20100301652 | Back Rest for a Stool or a Chair, and Stool or Chair Provided with such a Back Rest - The invention relates to a back rest for a stool or a chair, comprising two adjacent, spring-mounted back supports ( | 12-02-2010 |
| 20110031793 | RECLINING CHAIR WITH ENHANCED ADJUSTABILITY - An adjustable reclining chair including a seat configured to support a user, a chair back, a base and a control mechanism mounted on the base. The control mechanism coupling the chair back to the seat with the chair back located generally adjacent to the user's back when the user is seated upon the seat. The control mechanism including a resistance adjustment mechanism for varying the control mechanism's resistance to a reclining force applied by the user to the chair back in order to move the chair back rearward from an upright position. The resistance adjustment mechanism activated by the weight of the user when seated in the chair, such that easy adjustment of the resistance is facilitated with the chair in an upright position. The resistance adjustment mechanism including a resilient member placed under a load during reclining of the chair to provide resistance to the reclining force. | 02-10-2011 |
| 20120091769 | CHAIR - A chair has a supporting frame, a seat portion for supporting an occupant, and a back portion for supporting the back of a seated occupant. The portion is reclinable relative to the supporting frame between a generally upright position and a generally reclined position. A preference control is operatively engaged between the back portion and a chair component, wherein displacement of the back portion toward the generally reclined position causes displacement of the chair component. The preference control is adjustable to vary the amount of displacement of the chair component caused by a given amount of displacement of the back portion toward the generally reclined position. | 04-19-2012 |
| 20130038105 | ADJUSTING MECHANISM FOR ADJUSTING A RESTORING FORCE THAT ACTS ON A BACKREST OF A CHAIR, AND OFFICE CHAIR WITH SUCH AN ADJUSTING MECHANISM - An adjusting mechanism is used to adjust a restoring force that acts on a backrest of a chair. The adjusting mechanism has a spring element for creating the restoring force, a support, and a backrest support that is pivotably mounted about a support axis on the support. An adjusting element configured as a pair of scissors containing a first scissor arm and a second scissor arm is provided, and the scissor arms are rotatably connected to each other about a scissor axis. The first scissor arm is pivotably mounted on the backrest support about an adjusting axis. A spring force produced by the spring element acts on the second scissor arm. A first actuating lever length is defined between the support axis and the scissor axis. The lever length is changeable using an adjusting element for adjusting the restoring force by pivoting the adjusting element about the adjusting axis. | 02-14-2013 |
| 20140300158 | TILT MECHANISM FOR A CHAIR AND CHAIR - A tilt mechanism is configured for adjustment of a tension applied by a chair back. The tilt mechanism includes a base, a back bracket tiltably supported on the base, and a rocker coupled to the back bracket so as to be moveable relative to the back bracket. The rocker has a pivot axis and pivots about the pivot axis when the back bracket tilts relative to the base. An energy storage mechanism is coupled to the rocker to exert a force onto a portion of the rocker. An actuating mechanism is coupled to at least one of the rocker or the energy storage mechanism and is configured to alter a distance between the pivot axis and the portion of the rocker at which the force is exerted onto the rocker, thereby altering a length of a lever arm. | 10-09-2014 |
| 297303200 | Fluid spring | 1 |
| 20130234485 | Office chair mechanism provided with a device for adjusting the swivel force - An office chair mechanism provided with a device for adjusting the swivel force includes a fixed part secured to the chair base, movable parts secured to the seating portion and to the back rest ( | 09-12-2013 |
| 297303300 | Torsion bar or torsion spring | 1 |
| 20120068509 | CHAIR ASSEMBLY WITH A BACKREST-ADJUSTING DEVICE - A chair assembly has a base frame, a pivot frame, a backrest frame, a seat frame and a backrest-adjusting device. The pivot frame is mounted pivotally on the base frame. The backrest frame is mounted securely on the pivot frame. The backrest-adjusting device is mounted between the base frame and the pivot frame and has a torsion spring biasing the pivot frame and the backrest frame to pivot forward. The backrest-adjusting device tightens or loosens the torsion spring to change the resilient force provided to the backrest frame against users' back. Therefore, the chair assembly adapts to differ users well. | 03-22-2012 |
| 297303400 | Coil spring | 3 |
| 20140125104 | ROCKING CHAIR AND SPRING UNIT USED THEREIN - A rocking chair includes a seat, a backrest that is tiltable rearward, a locking spring portion that imparts resistance to the rearward tilting of the backrest, and a resilience adjustment member that changes the degree of resistance of the spring portion to the rearward tilting of the backrest. The resilience adjustment member is a cam that is rotationally operable by a person seated on a seat and the position in which rocking load due to the rearward tilting of the backrest is applied to the spring portion is changed by the cam, so that moment applied to the spring portion changes and the degree of resistance of the spring portion is adjusted. | 05-08-2014 |
| 20150374132 | MECHANISM FOR AN OFFICE CHAIR - A mechanism for an office chair allows a pivoting resistance of a backrest support to be altered. The mechanism for the office chair, in which a small adjustment travel is sufficient in order to realize a large adjustment range of the pivoting resistance of the backrest, has an actuating element connected to the backrest support with a supporting and/or guide track for a functional element. The functional element brings about a change in the spring tension of a spring element during pivoting of the backrest support. | 12-31-2015 |
| 20160174720 | MECHANISM TO ADJUST THE RECLINE TENSION FOR A BACKREST OF A TASK CHAIR AND A TASK CHAIR WITH SUCH KIND OF MECHANISM | 06-23-2016 |
