Hydraulic chair height adjustment mechanism

Details Hydraulic chair height adjustment mechanism Hydraulic chair height adjustment mechanism

1994-05-26

1996-04-30

Chotkowski, Karen J.

Supports

Resilient support

Adjustable preloading of resilient means

248161, 248599, A47C 700

Patent

active

055117597

ABSTRACT:
An adjustment mechanism for adjusting the height of a chair seat, table top or the relative position of other items includes an outer support tube and a telescoping, column tube subassembly. The column tube subassembly includes an inner support tube, a cylinder and a piston and piston rod subassembly. The piston rod is connected to the piston at one end and to the outer support tube at the other end. An elastomeric sleeve surrounds the cylinder. A valve controls flow of hydraulic fluid from the interior of the cylinder to and from an expandable chamber defined by the elastomeric sleeve. The piston snap-fits onto the piston rod and allows rotation of the column tube subassembly with respect to the outer support tube. A shock-absorbing element is disposed in the cylinder.

REFERENCES:
patent: Re21857 (1941-07-01), Herold
patent: 3052328 (1962-09-01), Brueckner
patent: 3212768 (1965-10-01), Casimir
patent: 3381926 (1968-05-01), Fritz et al.
patent: 3465650 (1969-09-01), Gluck
patent: 3547394 (1970-12-01), Wehner
patent: 3711054 (1973-01-01), Bauer
patent: 3722640 (1973-03-01), Taylor
patent: 3763651 (1973-10-01), Okiyama
patent: 3771626 (1973-11-01), Palmer
patent: 3774895 (1973-11-01), Willich et al.
patent: 3777617 (1973-12-01), Okiyama
patent: 3788587 (1974-01-01), Stemmler
patent: 3825244 (1974-07-01), Bauer
patent: 3913901 (1975-10-01), Molders
patent: 3921952 (1975-11-01), Wirges
patent: 3944031 (1976-03-01), Cholet et al.
patent: 3969989 (1976-07-01), Maurer et al.
patent: 3973654 (1976-08-01), Patriquin
patent: 4054277 (1977-10-01), Sirven
patent: 4060155 (1977-11-01), Duckett
patent: 4072288 (1978-02-01), Wirges et al.
patent: 4106392 (1978-08-01), Johnson, Jr. et al.
patent: 4113220 (1978-09-01), Godwin et al.
patent: 4122923 (1978-10-01), Ellis et al.
patent: 4139175 (1979-02-01), Bauer
patent: 4183689 (1980-01-01), Wirges et al.
patent: 4220307 (1980-09-01), Hale
patent: 4241814 (1980-12-01), Masclet
patent: 4245826 (1981-01-01), Wirges
patent: 4257499 (1981-03-01), Deschner
patent: 4310077 (1982-01-01), Whiteside
patent: 4386766 (1983-06-01), Bauer et al.
patent: 4415135 (1983-11-01), French
patent: 4441644 (1984-04-01), Farian
patent: 4445671 (1984-05-01), Reuschenbach et al.
patent: 4465266 (1984-08-01), Hale
patent: 4485996 (1984-12-01), Beukema et al.
patent: 4560041 (1985-12-01), Wkossner
patent: 4560042 (1985-12-01), Sell et al.
patent: 4566565 (1986-01-01), Wicke
patent: 4580749 (1986-04-01), Howard
patent: 4592590 (1986-06-01), Slaats et al.
patent: 4593951 (1986-06-01), Slaats et al.
patent: 4609135 (1986-09-01), Elliesen
patent: 4621868 (1986-11-01), Slaats et al.
patent: 4624346 (1986-11-01), Katz
patent: 4647026 (1987-03-01), Siemann et al.
patent: 4666378 (1987-05-01), Ogawa
patent: 4697674 (1987-10-01), Tangorra
patent: 4702356 (1987-10-01), Katz et al.
patent: 4720068 (1988-01-01), Tornero
patent: 4742898 (1988-05-01), Lee
patent: 4756496 (1988-07-01), Hosan et al.
patent: 4784362 (1988-11-01), Wang
patent: 4826094 (1989-05-01), Whiteley
patent: 4832162 (1989-05-01), Bacardit
patent: 4834088 (1989-05-01), Jeanson
patent: 4838392 (1989-06-01), Miller et al.
patent: 4858733 (1989-08-01), Noguchi et al.
patent: 4877226 (1989-10-01), Taylor
patent: 4899969 (1990-02-01), Bauer et al.
patent: 4963442 (1990-10-01), Marianowski et al.
patent: 4964015 (1990-10-01), Crooker et al.
patent: 4979718 (1990-12-01), Bauer et al.
patent: 4997150 (1991-03-01), Mardollo
patent: 5037132 (1991-08-01), Borlinghaus et al.
patent: 5073351 (1992-01-01), Gualtieri
patent: 5090770 (1992-02-01), Heinrichs et al.
patent: 5109963 (1992-05-01), Husted et al.
patent: 5113980 (1992-05-01), Furrer et al.
patent: 5120011 (1992-06-01), Mintgen et al.
patent: 5137125 (1992-08-01), Troltsch et al.
patent: 5148896 (1992-09-01), Ralph
patent: 5176355 (1993-01-01), Carter
patent: 5178241 (1993-01-01), Aubry
patent: 5234187 (1993-08-01), Teppo et al.
patent: 5263674 (1993-11-01), Huang
patent: 5284312 (1994-02-01), Dony
"The AXIS Hydropneumatic Chair Lift" by Axis Corporation, Taiwan, R.O.C., possibly by Mar. 9 or 10, 1994.

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