Patent application number | Description | Published |
20080224526 | Internally pulling type lift device for chair armrest - An internally pulling type lift device for a chair armrest includes an outer pipe, a guide track, an inner pipe, a follower, a locking member, a pull handle, a control knob, and a spring. Thus, the inner pipe is movable in the outer pipe so that the inner pipe will not rub the outer wall of the outer pipe during a long-term utilization, thereby enhancing the aesthetic quality of the outer pipe. In addition, the inner pipe is locked onto or unlocked from the outer pipe by pulling or releasing the control knob, so that the lift device is operated easily and rapidly, thereby facilitating a user operating the lift device to adjust the height of the armrest. | 09-18-2008 |
20090184560 | Chair armrest having a Height Adjustable Function - An armrest for a chair includes an armrest support, a sleeve movably mounted on the armrest support, a support arm mounted on the sleeve, a locking member mounted between the armrest support and the sleeve, and a lifting device mounted between the armrest support and the sleeve. Thus, when the control knob of the lifting device is pressed, the movable shaft of the lifting device is unlocked from the locking member so that the movable shaft is movable in the locking member and the support post of the armrest support freely, and the sleeve is movable relative to the support post of the armrest support to adjust the height of the support arm. | 07-23-2009 |
20100066147 | Chair Armrest having a Height Adjustable Function - An armrest for a chair includes an armrest support, a sleeve movably mounted on the armrest support, a support arm mounted on the sleeve, a locking member secured in the armrest support, and a lifting device mounted between the armrest support and the sleeve. Thus, when the drive lever of the lifting device is pressed upward, the movable shaft of the lifting device is unlocked from the locking member so that the movable shaft is movable in the locking member and the armrest support freely, and the sleeve is movable relative to the armrest support to adjust the height of the support arm. | 03-18-2010 |
20110085851 | Lifting Device for the Backrest of a Chair - A lifting device for the backrest of a chair includes a fixed member, a movable member movably mounted on the fixed member and having an elongate slideway and a plurality of locking grooves, a locking bolt extending into the slideway of the movable member and detachably locked in one of the locking grooves of the movable member, a slide secured on the locking bolt to move the locking bolt, and an elastic member biased between the slide and the fixed member to push the locking bolt toward one of the locking grooves. Thus, the movable member is moved relative to the fixed member to adjust the height of the backrest so that the height of the backrest can be adjusted according to a user's requirement, and the backrest can support the user's back efficiently. | 04-14-2011 |
20110138571 | Castor that can be Detached and Cleaned Easily and Quickly - A castor includes a dustproof cover, a support shaft detachably mounted on the dustproof cover and two rollers mounted on the support shaft respectively and received in the dustproof cover respectively. The dustproof cover has an inner portion provided with a support post. The support post has a lower end provided with an arcuate locking recess detachably locked onto the support shaft. Thus, each of the rollers is encompassed by the dustproof cover completely so that the dustproof cover can isolate the rollers to prevent hairs, dirt or dusts from entering the rollers easily. In addition, the support shaft can be detached from the dustproof cover so that the support shaft and the rollers can be removed from the dustproof cover to facilitate the user clearing dirt, dusts or hairs accumulated in the dustproof cover and the rollers. | 06-16-2011 |
20110146027 | Castor Assembly Having Adjustable Height - A castor assembly includes a castor body, a threaded rod rotatably mounted on the castor body, a lower adjusting cover surrounding the threaded rod to cover the threaded rod and secured on the threaded rod to rotate the threaded rod relative to the castor body, an upper adjusting cover surrounding the threaded rod to cover the threaded rod and retractably mounted on the lower adjusting cover, and an elastic member mounted on the threaded rod and biased between the threaded rod and the upper adjusting cover to push the upper adjusting cover outwardly relative to the lower adjusting cover. Thus, the threaded rod is covered by the lower adjusting cover and the upper adjusting cover to enhance the aesthetic quality of the castor assembly. | 06-23-2011 |
20110225769 | Castor Assembly for a Chair - A castor assembly includes an upright support shaft, a leg mounted on the support shaft and a pressing sleeve mounted between the upper end of the support shaft and the leg. The upper end of the support shaft has a retaining groove. The pressing sleeve has an inner wall provided with an inner flange retained in the retaining groove of the support shaft and an outer wall provided with an outer flange. The leg has an end portion provided with a receiving space pressing the outer flange of the pressing sleeve. Thus, the support shaft is combined with the leg by the pressing sleeve to prevent from defining a gap between the support shaft and the leg so that the support shaft will not hit the leg so as to prevent from producing noise or vibration. | 09-22-2011 |
20110226925 | Lifting Device for Chair - A lifting device for a chair includes an upright support post, a tapered locking sleeve adjustably mounted on the support post, a tapered pressing sleeve mounted on the locking sleeve, a stepping ring having a mounting tube which is mounted on the pressing sleeve, and a dustproof cover abutting a top of the mounting tube of the stepping ring and secured on a top of the pressing sleeve. Thus, the pressing sleeve surrounds the locking sleeve to distribute the pressing force evenly, and the locking sleeve surrounds the support post to distribute the pressing force evenly so as to prevent the pressing sleeve and the locking sleeve from being worn out or broken due to a stress concentration and to enhance the lifetime of the lifting device. | 09-22-2011 |
20110248542 | Chair Armrest Assembly Having Adjustable Height - An armrest assembly for a chair includes an armrest support, a mounting sleeve mounted on the armrest support, an armrest mounted on the mounting sleeve, and a lifting device mounted between the armrest support and the mounting sleeve to lock or unlock the mounting sleeve onto or from the armrest support. Thus, the mounting sleeve is movable relative to the armrest support so as to adjust the height of the armrest so that the height of the armrest can be adjusted freely to support a user's arm comfortably. In addition, a user only needs to pull the armrest upward to adjust the height of the armrest so that the user can adjust the height of the armrest easily and quickly in an energy-saving manner. | 10-13-2011 |
20120079681 | Protective Device for Castor - A protective device for a castor includes a mounting ring, and a driving piece secured on the mounting ring. The mounting ring has an outer periphery formed with a breakable portion which is located beside the driving piece. The driving piece has a first end extending from the mounting ring and a second end formed with a pull tab. When the mounting ring is released by tearing the breakable portion, the mounting ring is directly driven by the driving piece to remove from each of the two rollers of the castor. Thus, the user only needs to apply a single action to pull the pull tab of the driving piece so as to remove the protective device from the castor completely so that the protective device can be removed from the castor easily and quickly. | 04-05-2012 |
20120084940 | Castor Having a Greater Structural Strength to Bear a Heavier Load - A castor includes a castor body, a first bushing mounted on a top of the castor body, a bearing mounted in the first bushing, a top cover mounted on the top of the castor body to cover the first bushing and the bearing, a second bushing mounted on a bottom of the castor body, and an upright shaft in turn extending through the top cover, the bearing, the castor body and the second bushing. Thus, the distance between the top cover and the second bushing is increased so that the bearing and the castor body can bear a heavier load. In addition, the distance between the top cover and the second bushing is increased so that the upright shaft and the second bushing can bear a greater rotational force. | 04-12-2012 |
Patent application number | Description | Published |
20090096271 | Internally Pulling Type Lift Device for Chair Armrest - An internally pulling type lift device for a chair armrest includes an outer pipe, a guide track, an inner pipe, a follower, a locking member, a pull handle, a control knob, a restoring spring, and a torsion spring. Thus, the guide track, the follower and the inner pipe are encompassed by the outer pipe so that the manufacturer only needs to spray paint on the outer pipe without having to spray paint on the guide track, the follower and the inner pipe, thereby saving the working time and decreasing the costs of fabrication. In addition, the inner pipe is movable in the outer pipe so that the inner pipe will not rub or scratch the outer surface of the outer pipe, thereby enhancing the aesthetic quality of the outer pipe. | 04-16-2009 |
20090313787 | Castor that is braked solidly and stably without producing vibration - A castor includes a castor body, two rollers rotatably mounted on the castor body and each having an annular toothed locking section, a locking member movably mounted on the castor body and having two locking flanges each having a toothed engaging portion, and a brake handle pivotally mounted on the castor body to drive the toothed engaging portion of each of the locking flanges of the locking member to engage the toothed locking section of the respective roller. Thus, when the brake handle is pressed to stop rotation of the rollers, the resting face of the pivot base abuts the support rib of the castor body so that the brake handle is operated smoothly and stably without producing vibration during operation of the brake handle, thereby enhancing the braking effect of the castor. | 12-24-2009 |
20100000050 | Castor that is Braked Solidly and Stably Without Producing Vibration - A castor includes an upright support post, a brake ring secured on the support post, a castor body rotatably mounted on the support post, two rollers rotatably mounted on the castor body, a first locking member movably mounted on the castor body, a second locking member movably mounted on the castor body, and a brake handle pivotally mounted on the castor body. Thus, when the castor is locked, each of the two rollers is locked onto and cannot be rotated relative to the castor body, and the castor body is locked onto and cannot be rotated relative to the support post, so that the castor will stop rotating when being braked so as to provide a double-braking effect. | 01-07-2010 |
20110062763 | Adjustable Armrest Support Assembly for Chair - An armrest support assembly for chair includes an upright support member, an outer tube movably and adjustably mounted on the support member and two opposite resting members each secured in the outer tube to move in concert with the outer tube and each abutting the support member during movement of the outer tube relative to the support member. Thus, when the outer tube is moved relative to the support member, the inner wall of each of two resting members presses the support member closely and tightly to stabilize movement of the outer tube relative to the support member, so that the outer tube is moved relative to the support member smoothly and stably without incurring vibration. | 03-17-2011 |
20110140498 | Armrest Assembly that can Adjust its Leftward and Rightward Positions - An armrest assembly includes a mounting bracket, a limit member mounted on the mounting bracket, and an armrest support mounted on the limit member. The bottom of the mounting bracket is provided with a slideway which has a first side provided with an upright limit face and a second side provided with an oblique limit face. The limit member has a first side provided with an upright mating face abutting the upright limit face and a second side provided with an oblique mating face abutting the oblique limit face. Thus, the upright mating face and the oblique mating face are limited by the upright limit face and the oblique limit face respectively, so that the limit member is moved in the slideway smoothly and stably without producing any vibration to facilitate movement of the armrest support relative to the mounting bracket. | 06-16-2011 |
20110221251 | Chair Armrest Assembly Having Adjustable Height - An armrest assembly for a chair includes an armrest support, a mounting sleeve movably mounted on the armrest support, an armrest mounted on the mounting sleeve to move in concert with the mounting sleeve, and a lifting device mounted between the armrest support and the mounting sleeve and operable between a first position where the lifting device is locked to lock the mounting sleeve onto the armrest support and a second position where the lifting device is unlocked to unlock the mounting sleeve from the armrest support so that the mounting sleeve is movable relative to the armrest support freely. Thus, the mounting sleeve is movable relative to the armrest support so as to adjust the height of the armrest so that the height of the armrest is adjusted freely to support a user's arm comfortably. | 09-15-2011 |
Patent application number | Description | Published |
20140250628 | Castor for Luggage - A castor for a luggage includes a mounting seat, an upright mandrel having an upper portion connected with the mounting seat, a roller support mounted on a lower portion of the upright mandrel, a shaft mounted on the roller support, and two rollers secured on two opposite ends of the shaft and located at two opposite side of the roller support. Thus, when the rollers on the roller support are worn out during a long-term utilization, the roller support can be removed from the upright mandrel for maintenance or replacement of the roller support and the rollers, without having to replace the whole structure of the castor. | 09-11-2014 |
20150040346 | Caster Wheel Structure - A caster wheel structure contains a body and a connecting shaft. The connecting shaft includes an engaging tab arranged around a bottom end thereof, and the engaging tab has an abutting rim arranged around an upper end thereof The body is injection molded and coupled with a holder by using the connecting shaft. The body includes a hole defined therein so as to insert the connecting shaft, and the hole has a receiving chamber formed therein and communicating with the hole. The connecting shaft is inserted into the hole of the body so that the engaging tab of the connecting shaft is mounted in the receiving chamber of the body. Thereby, when the connecting shaft is coupled with the body, the abutting rim of the engaging tab contacts with a bottom periphery of the hole, such that the connecting shaft is fixed by the bottom periphery of the hole securely. | 02-12-2015 |
20150040352 | Double Brake Structure for Caster Wheel - A double brake structure for a caster wheel contains a body, a connecting shaft, a cover, a central post, two rollers, a locking piece, a fixing member, a braking seat, a resilient element, and a bottom cap. The body includes a groove having a square hole and includes a receiving chamber. The locking piece includes a retaining recess for limiting a peripheral rib of the cover. The fixing member includes two engaging teeth, two through holes, a flange, a notch, and a recessed trench. The braking seat includes an opening, a tab extending, and a pedal portion. The bottom cap includes a pore defined thereon and a circular indention formed on a central position of a top surface thereof so as to insert one end of the resilient element. | 02-12-2015 |