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公开(公告)号:US06422652B1
公开(公告)日:2002-07-23
申请号:US09726135
申请日:2000-11-29
Applicant: Richard N. Roslund, Jr. , Troy Roark
Inventor: Richard N. Roslund, Jr. , Troy Roark
IPC: B60N202
CPC classification number: A47C7/402
Abstract: A height adjusting mechanism is connected between a rigid upright extending upwardly from the seat assembly and an inner shell of the back assembly. The height adjusting mechanism includes a ratcheting latch which engages a vertically elongate rack to maintain the back assembly at a selected elevation and a release lever or cam which is connected to the catch and automatically disengages the catch from the rack at the upper limit of travel of the back assembly. The release cam continuously contacts the inner shell of the back assembly and is deactivated merely by a short upward shifting of the back assembly which thereby permits the pawl to reengage the rack at any desired elevation. Accordingly, reengagement of the pawl with the rack can be accomplished at any point between the upper and lower limits of travel of the back assembly.
Abstract translation: 高度调节机构连接在从座椅组件向上延伸的刚性立柱和后组件的内壳之间。 高度调节机构包括棘轮闩锁,其接合垂直细长的齿条以将后组件保持在选定的高度;以及释放杆或凸轮,该释放杆或凸轮连接到所述卡扣并且在所述卡盘的行进上限处自动地从所述齿条脱离 后组装。 释放凸轮连续地接触后组件的内壳,并且仅通过后组件的短暂的向上移动来停用,从而允许棘爪以任何期望的高度重新接合齿条。 因此,可以在背部组件的行进的上限和下限之间的任何点处实现具有齿条的棘爪的重新接合。
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公开(公告)号:US06286900B1
公开(公告)日:2001-09-11
申请号:US09434431
申请日:1999-11-04
Applicant: Troy Roark
Inventor: Troy Roark
IPC: A47C760
CPC classification number: A47C1/03255 , A47C1/03266 , A47C1/03272
Abstract: A tilt control mechanism for an office chair includes a spring arrangement which permits forward and rearward tilting of the chair while also urging the chair to a normal upright position. The spring arrangement includes front and rear springs which act in combination such that the upward acting forces acting on the chair can be varied during use. The forces being applied by the front spring are adjusted by a side-actuated tension adjustment mechanism which incorporates a wedge block for adjusting the spring forces. Further, the rear springs provide a variable spring force such that the spring force is maximized when in the normal position but is decreased substantially once the chair is fully reclined. This reduction in spring force allows a user to maintain the chair in the fully reclined position with significantly less force than was required to tilt the chair rearwardly while a sufficient spring force continues to be applied by the front spring to urge the chair to the normal position.
Abstract translation: 用于办公椅的倾斜控制机构包括弹簧装置,其允许椅子的前后倾斜,同时还将椅子推向正常的直立位置。 弹簧装置包括组合的前后弹簧,使得作用在椅子上的向上作用力可在使用期间变化。 由前弹簧施加的力由侧向致动的张力调节机构调节,该机构包括用于调节弹簧力的楔形块。 此外,后弹簧提供可变的弹簧力,使得当处于正常位置时弹簧力最大化,但是一旦椅子完全倾斜,则弹簧力被大大减小。 弹簧力的这种减小允许使用者将椅子保持在完全倾斜的位置,其力显着小于将椅子向后倾斜所需的力,同时由前弹簧继续施加足够的弹簧力以将椅子推到正常位置 。
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公开(公告)号:US07922248B2
公开(公告)日:2011-04-12
申请号:US12012002
申请日:2008-01-28
Applicant: John F. Aldrich , Ryan S. Brill , Elindo G. Castro, Jr. , Christopher C. Hill , James D. Slagh , Troy Roark , Douglas M. VanDeRiet , Jeffrey A. Weber
Inventor: John F. Aldrich , Ryan S. Brill , Elindo G. Castro, Jr. , Christopher C. Hill , James D. Slagh , Troy Roark , Douglas M. VanDeRiet , Jeffrey A. Weber
IPC: A47C1/00
CPC classification number: A47C3/00 , A47C1/023 , A47C1/03255 , A47C1/03266 , A47C1/03277 , A47C7/024 , A47C7/027 , A47C7/14 , A47C7/38 , A47C7/40 , A47C7/405 , F16B2200/10 , Y10T29/49954
Abstract: A seating structure has an articulated seat and back. A rear portion of the seat is automatically pivotable relative to a forward portion of the seat as the seat is tilted between upright and reclined tilt positions. An upper portion of the back is pivotable relative to the lower portion between a neutral position and an extended position, with the upper portion being pivotable relative to the lower portion independent of the tilt position of the back. In one aspect, an adjustment mechanism is coupled between lower and upper back support members and pivots the upper support member between at least first and second support positions. A seat with an adjustable seat depth is also provided, along with various methods for operating the different aspects and embodiments of the seating structure.
Abstract translation: 座椅结构具有铰接的座椅和靠背。 当座椅在直立和倾斜倾斜位置之间倾斜时,座椅的后部可相对于座椅的前部自动枢转。 背部的上部相对于中间位置和延伸位置之间的下部可枢转,上部可相对于下部枢转,独立于背部的倾斜位置。 在一个方面,调节机构联接在下后支撑构件和上后支撑构件之间,并且在至少第一和第二支撑位置之间枢转上支撑构件。 还提供了具有可调座椅深度的座椅,以及用于操作座椅结构的不同方面和实施例的各种方法。
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公开(公告)号:US6015187A
公开(公告)日:2000-01-18
申请号:US16371
申请日:1998-01-30
Applicant: Richard N. Roslund, Jr. , Patrick Nelson , Larry Allen Wilkerson , Troy Roark , Joel Dral , Steve Simpson , John Clark
Inventor: Richard N. Roslund, Jr. , Patrick Nelson , Larry Allen Wilkerson , Troy Roark , Joel Dral , Steve Simpson , John Clark
CPC classification number: A47C1/03255 , A47C1/03266 , A47C1/03272
Abstract: A tilt control mechanism for an office chair includes a spring arrangement which permits forward and rearward tilting of the chair while also urging the chair to a normal upright position. The spring arrangement includes front and rear springs which act in combination such that the upward acting forces acting on the chair can be varied during use. The forces being applied by the front spring are adjusted by a side-actuated tension adjustment mechanism which incorporates a wedge block for adjusting the spring forces. Further, the rear springs provide a variable spring force such that the spring force is maximized when in the normal position but is decreased substantially once the chair is fully reclined. This reduction in spring force allows a user to maintain the chair in the fully reclined position with significantly less force than was required to tilt the chair rearwardly while a sufficient spring force continues to be applied by the front spring to urge the chair to the normal position.
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公开(公告)号:US20080217977A1
公开(公告)日:2008-09-11
申请号:US12012002
申请日:2008-01-28
Applicant: John F. Aldrich , Rayan S. Brill , Elindo G. Castro , Christopher C. Hill , James D. Slagh , Troy Roark , Douglas M. VanDeRiet , Jeffrey A. Weber
Inventor: John F. Aldrich , Rayan S. Brill , Elindo G. Castro , Christopher C. Hill , James D. Slagh , Troy Roark , Douglas M. VanDeRiet , Jeffrey A. Weber
IPC: A47C7/14
CPC classification number: A47C3/00 , A47C1/023 , A47C1/03255 , A47C1/03266 , A47C1/03277 , A47C7/024 , A47C7/027 , A47C7/14 , A47C7/38 , A47C7/40 , A47C7/405 , F16B2200/10 , Y10T29/49954
Abstract: A seating structure has an articulated seat and back. A rear portion of the seat is automatically pivotable relative to a forward portion of the seat as the seat is tilted between upright and reclined tilt positions. An upper portion of the back is pivotable relative to the lower portion between a neutral position and an extended position, with the upper portion being pivotable relative to the lower portion independent of the tilt position of the back. In one aspect, an adjustment mechanism is coupled between lower and upper back support members and pivots the upper support member between at least first and second support positions. A seat with an adjustable seat depth is also provided, along with various methods for operating the different aspects and embodiments of the seating structure.
Abstract translation: 座椅结构具有铰接的座椅和靠背。 当座椅在直立和倾斜倾斜位置之间倾斜时,座椅的后部可相对于座椅的前部自动枢转。 背部的上部相对于中间位置和延伸位置之间的下部可枢转,上部可相对于下部枢转,独立于背部的倾斜位置。 在一个方面,调节机构联接在下后支撑构件和上后支撑构件之间,并且在至少第一和第二支撑位置之间枢转上支撑构件。 还提供了具有可调座椅深度的座椅,以及用于操作座椅结构的不同方面和实施例的各种方法。
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公开(公告)号:US06361110B1
公开(公告)日:2002-03-26
申请号:US09746180
申请日:2000-12-21
Applicant: Richard N. Roslund, Jr. , Patrick Nelson , Larry Allen Wilkerson , Troy Roark , Joel Dral , Steve Simpson , John Clark
Inventor: Richard N. Roslund, Jr. , Patrick Nelson , Larry Allen Wilkerson , Troy Roark , Joel Dral , Steve Simpson , John Clark
IPC: A47C320
Abstract: A tilt control mechanism for an office chair includes a spring arrangement which permits forward and rearward tilting of the chair while also urging the chair to a normal upright position. The spring arrangement includes front and rear springs which act in combination such that the upward acting forces acting on the chair can be varied during use. The forces being applied by the front spring are adjusted by a side-actuated tension adjustment mechanism which incorporates a wedge block for adjusting the spring forces. Further, the rear springs provide a variable spring force such that the spring force is maximized when in the normal position but is decreased substantially once the chair is fully reclined. This reduction in spring force allows a user to maintain the chair in the fully reclined position with significantly less force than was required to tilt the chair rearwardly while a sufficient spring force continues to be applied by the front spring to urge the chair to the normal position.
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