Chairs and seats – Back movement resiliently opposed in operating position – Back and seat adjust simultaneously
Patent
1994-09-29
1996-12-10
Nelson, Jr., Milton
Chairs and seats
Back movement resiliently opposed in operating position
Back and seat adjust simultaneously
297285, A47C 300
Patent
active
055824595
ABSTRACT:
A chair is provided which comprises a support, a seat arranged above the support, and a seat back tiltably connected to the support behind the seat. The seat back has an upper back supporting portion and a lower waist supporting portion. The chair further comprises a mechanism for deforming the waist supporting portion forward until the seat back tilts rearward to a predetermined intermediate tilt angle but for retarding or stopping such forward deformation when the seat back tilts rearward beyond this intermediate tilt angle. The seat may be made to move rearward as the seat back tilts rearward.
REFERENCES:
patent: 4157203 (1979-06-01), Ambasz
patent: 4685733 (1987-08-01), Machate et al.
patent: 4758045 (1988-07-01), Edel et al.
patent: 5108149 (1992-04-01), Ambasz
patent: 5308144 (1994-05-01), Korn
Hama Katsunori
Iwabuchi Hiroshi
Nakaseko Masaru
Takamatsu Shunichi
Bednarek Michael D.
Itoki Crebio Corporation
Jr. Milton Nelson
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