Task chair
First Claim
Patent Images
1. An adjustable chair comprising:
- a base;
a seat comprising a seating surface, said seat connected to said base;
a back support control assembly connected to said seat;
at least two adjustable, generally vertical back support arms, each said back support arm pivotally attached to said back support control assembly at a control assembly pivot point and each said back support arm independently adjustable about its said respective control assembly pivot point, said back support arms adjustable in a fore and aft position to vary an angle with respect to said seating surface ;
and a vertically adjustable back support disposed on each said back support arm, a first of said back supports for supporting a lower back of a seated person and a second of said back supports supporting an upper back of the seated person, said second back support disposed along a generally vertical plane aft of said first back support.
1 Assignment
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Accused Products
Abstract
The present invention relates to task chairs that support the body of the user in healthy positions while the user performs various tasks over extended sitting periods and that provide independent and independently adjustable support to the lower and the upper back.
103 Citations
23 Claims
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1. An adjustable chair comprising:
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a base;
a seat comprising a seating surface, said seat connected to said base;
a back support control assembly connected to said seat;
at least two adjustable, generally vertical back support arms, each said back support arm pivotally attached to said back support control assembly at a control assembly pivot point and each said back support arm independently adjustable about its said respective control assembly pivot point, said back support arms adjustable in a fore and aft position to vary an angle with respect to said seating surface ;
anda vertically adjustable back support disposed on each said back support arm, a first of said back supports for supporting a lower back of a seated person and a second of said back supports supporting an upper back of the seated person, said second back support disposed along a generally vertical plane aft of said first back support. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An adjustable chair comprising:
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a base;
a seat comprising a seating surface, said seat connected to said base;
a back support control assembly connected to said seat;
at least two independently adjustable, generally vertical back support arms attached to said back support control assembly;
a vertically adjustable back support disposed on each said back support arm, a first of said back supports for supporting a lower back of a seated person and a second of said back supports for supporting an upper back of the seated person;
a first adjusting component connected to said first back support for adjusting said first back support;
a second adjusting component connected to said second back support for adjusting said second back support; and
said adjusting components accessible to a user and effecting adjustment of said back supports while the user is seated. - View Dependent Claims (15, 17, 18, 19)
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16. The chair of daim 14 wherein said second adjusting component faces toward a rear of said chair.
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20. An adjustable chair comprising;
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a base;
a seat comprising a seating surface, said seat connected to said base;
a back support control assembly connected to said seat;
at least two independently adjustable, generally vertical back support arms attached to said back support control assembly;
a vertically adjustable back support disposed on each said back support arm, a first of said back supports for supporting a lower back of a seated person and a second of said back supports for supporting an upper back of the seated person; and
a first adjusting component and a second adjusting component for adjusting said first and second back supports, each said adjusting component comprising adjustable settings for adjustment of a position of said back supports on each respective back support arm, said adjusting components comprising calibration indicators visible to a user. - View Dependent Claims (21, 22, 23)
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Specification