Chairs and seats – Movable bottom – Tiltable
Patent
1976-06-02
1978-01-10
Zugel, Francis K.
Chairs and seats
Movable bottom
Tiltable
297DIG10, 297DIG4, A61G 500
Patent
active
040672492
ABSTRACT:
To assist a person from seated to an erect position a mechanism for raising and straightening a seat surface and the seat backrest to a nearly vertical position is provided, which avoids substantial relative motion between the body of the person and the seat surface and the seat backrest. In the erected position of the chair, a groundplate of the footrest is firmly supported on the ground.
REFERENCES:
patent: 1372546 (1921-03-01), Read et al.
patent: 2656876 (1953-10-01), Larrick
patent: 3216738 (1965-11-01), Bockus
patent: 3261031 (1966-07-01), Gates
patent: 3343871 (1967-09-01), Yates
patent: 3379450 (1968-04-01), Jones
patent: 3589769 (1971-06-01), Bressler
patent: 3866973 (1975-02-01), Heubeck
Caterpillar Tractor Co.
Grant John W.
Zugel Francis K.
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