[특허]Chair seat adjustment assembly

[미국특허] Chair seat adjustment assembly 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A47C-011/02
출원번호	US-0145624 (1980-05-01)
발명자 / 주소	Pergler Charles C. (Grand Rapids MI) Knoblauch Jack R. (Byron Center MI)
출원인 / 주소	Steelcase Inc. (Grand Rapids MI 02)
인용정보	피인용 횟수 : 18 인용 특허 : 3

초록 ▼

The specification discloses a seat pitch adjustment assembly which a user can adjust upwardly or downwardly with basically the same applied force. A seat support is pivotally mounted with respect to a supporting assembly at one point and is joined thereto at another point through a pivot bracket. The pivot bracket is pivotally mounted to the support assembly on one pivot axis and to the seat support on a second pivot axis. The pivot bracketing includes a cylindrical wall defining at least a portion of the wall of a right circular cylinder whose axis of revolution lies on the aforesaid second pivot axis. The cylindrical wall includes at least one helically oriented slot receiving a projection from a slide slidably mounted on the seat support member whereby movement of the slide one way or the other rotates the pivot bracket about said second pivot axis and thereby changes the relative elevation of the first pivot axis with respect thereto. This in turn changes the pitch of the seat support with respect to the underlying support assembly and thereby changes the pitch of a seat mounted thereon.

대표청구항 ▼

A chair seat pitch adjustment assembly having first support means, a seat support member pivotally mounted with respect to said first support means at one point and adjustment means interconnecting said seat support with said first support means for adjusting the angle of said seat support member with respect to said first support means, the improvement in said assembly comprising: said adjustment means including a pivot bracket pivotally mounted to said first support means on one pivot axis and to said seat support member on a second pivot axis; said pivot bracket including a cylindrical wall extending generally laterally with respect to the sides of said seat support member, said cylindrical wall defining at least a portion of the wall of a right circular cylinder whose axis of revolution lies on said second pivot axis; said cylindrical wall including at least one helically oriented slot therein; a slide slidably mounted on said seat support member for generally lateral movement with respect to the sides of said seat support member, said slide including projection means projecting through said helical slot in said cylindrical wall whereby as said slide is moved laterally, said cylindrical wall and therefore said pivot bracket are rotated about said second pivot axis, thereby changing the relative elevation of said first pivot axis with respect thereto and thereby changing the pitch of said seat support member with respect to said first support means; means allowing at least one of said pivotal mountings between said seat support member and said first support means, said seat support member and said pivot bracket and said pivot bracket and said first support means to shift when said pivot bracket is rotated; said seat support member including a wall having a generally rectilinear slot therein extending generally laterally with respect to the sides of said seat support member; said projection means on said slide extending through said generally rectilinear slot; and an insert of semi-cylindrical configuration corresponding to the configuration of said cylindrical wall and being seated therein, said insert including a helical slot therein aligned with said helical slot in said cylindrical wall.

이 특허에 인용된 특허 (3) 인용/피인용 타임라인 분석

Karrip Alexander A. (Grand Rapids MI) Knoblauch Jack R. (Byron Center MI) Pergler Charles C. (Grand Rapids MI) Korell Donald D. (Ada MI), Chair control.
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Strien Werner (Stuttgart DEX), Headrest for vehicle seats.
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Swenson Richard F. (Milwaukee WI) Eimen Shawn H. (Menomonee Falls WI), Vehicle seat having seat rake adjustment means.
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이 특허를 인용한 특허 (18) 인용/피인용 타임라인 분석

Gamberini Gino (Toscanella Di Dozza ITX), Adjustable chair.
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Hodge David N. (The Sea Ranch CA) Jenkins David C. (Grand Rapids MI) Mercier Michael L. (Grandville MI) Teppo David S. (East Grand Rapids MI) Lindgren Larry G. (Rockford MI) Halliwill Jeffery L. (Gow, Adjustable chair actuator.
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Nelson, Patrick C.; Kleinikel, Manfred; Hartel, Werner, Chair.
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Wilkerson Larry A. ; Roslund ; Jr. Richard N., Chair.
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Stumpf, William E.; Schoenfelder, Rodney C.; Chadwick, Donald; Keller, Carolyn; Coffield, Timothy P.; Sayers, Randy J.; Bruner, Jeffrey W.; Miles, George A.; Cammenga, Eric; Crossman, Philip, Chair with a linkage assembly.
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Roslund ; Jr. Richard N., Forward-rearward tilt control for chair.
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Sanchez,Gary L., Health chair a dynamically balanced task chair.
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Heidmann Kurt R. (Grand Rapids MI) Christensen Brian L. (Wayland MI) Root Brian H. (Grandville MI) Schwoerer Patrick P. (Sarrebourg FRX) Steffens James P. (Hopkins MI), Modular chair construction and method of assembly.
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Heidmann Kurt R. ; Christensen Brian L. ; Haan Micahel W. ; Knoblock Glenn A. ; McClure Eric T. ; Palacios Noe ; Root Brian H. ; Sayers David D. ; Scheper Robert M. ; Schwoerer Patrick P.,FRX ; Steff, Modular chair construction and method of assembly.
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Heidmann Kurt R. ; Christensen Brian L. ; Haan Michael W. ; Knoblock Glenn A. ; McClure Eric T. ; Palacios Noe ; Root Brian H. ; Sayers David D. ; Scheper Robert M. ; Schwoerer Patrick P. ; Steffens , Modular chair construction and method of assembly.
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Heidmann Kurt R. ; Christensen Brian L. ; Haan Michael W. ; Knoblock Glenn A. ; McClure Eric T. ; Palacios Noe ; Root Brian H. ; Sayers David D. ; Scheper Robert M. ; Schwoerer Patrick P.,FRX ; Steff, Modular chair construction and method of assembly.
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William E. Stumpf ; Rodney C. Schoenfelder ; Donald Chadwick ; Carolyn Keller ; Timothy P. Coffield ; Randy J. Sayers ; Jeffrey W. Bruner ; George A. Miles ; Eric Cammenga ; Philip Crossman, Office chair.
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Sanchez, Gary L., Task chair.
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Sanchez,Gary L., Task chair.
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Heidmann Kurt R. (Grand Rapids MI) Christensen Brian L. (Wayland MI) Haan Michael W. (Byron Center MI) Knoblock Glenn A. (Kentwood MI) McClure Eric T. (Grand Rapids MI) Palacios Noe (Rockford MI) Roo, Tension adjustment mechanism for chairs.
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Stumpf William E. ; Schoenfelder Rodney C. ; Chadwick Donald ; Keller Carolyn ; Coffield Timothy P. ; Sayers Randy J. ; Bruner Jeffrey W. ; Miles George A. ; Cammenga Eric ; Crossman Philip, Tilt control mechanism for a chair.
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Holbrook, Richard M.; Mark, Darren M., Tilt control mechanism for a tilt back chair.
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Fookes, Tim; Rose, Jason M., Tilt control mechanism for chair.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Chair seat adjustment assembly 원문보기

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[미국특허] Chair seat adjustment assembly 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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이 특허에 인용된 특허 (3) 인용/피인용 타임라인 분석

이 특허를 인용한 특허 (18) 인용/피인용 타임라인 분석

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