Chairs and seats – Movable bottom – Interconnected with back for relative concurrent movement
Patent
1998-01-26
1999-10-19
Cuomo, Peter M.
Chairs and seats
Movable bottom
Interconnected with back for relative concurrent movement
297353, 2971839, 482130, 482142, A47C 100
Patent
active
059676108
ABSTRACT:
A chair with a swivel seat and backrest includes a base support having a central portion on which is vertically mounted a hydraulic cylinder, the hydraulic cylinder having an upwardly extending piston rod, a seat having a bottom provided with a base frame, a first gear disposed under the base frame, a backrest having a lower portion provided with a support member, the supporting member having a lower end provided with a second gear meshed with the first gear, a bracket including an upper mounting and a lower mounting, the upper mounting having a top provided with two vertical bolts, one of the vertical bolts extending upwardly through the first gear to engage with the base frame, another one of the vertical bolts extending upwardly through the second gear to engage with the supporting member, the lower mounting being fixedly connected with the upper mounting having a downwardly extending tubular portion receiving the piston rod, and two armrests fixedly mounted on two opposite sides of the backrest, whereby the seat and the backrest can be rotated in opposite directions as desired thereby making it able to give exercise to an user's lumbar.
REFERENCES:
patent: 2568988 (1951-09-01), Childs
patent: 3720443 (1973-03-01), Mourgue
patent: 4429918 (1984-02-01), Alsup, Jr. et al.
patent: 4822093 (1989-04-01), Kawai et al.
patent: 5035466 (1991-07-01), Mathews et al.
patent: 5110121 (1992-05-01), Foster
patent: 5336138 (1994-08-01), Arjawat
patent: 5695250 (1997-12-01), Lin
patent: 5755650 (1998-05-01), Urso
Cuomo Peter M.
White Rodney B.
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