Chairs and seats – Bottom or back – Contoured bottom
Patent
1995-06-19
1996-11-19
Cuomo, Peter M.
Chairs and seats
Bottom or back
Contoured bottom
29745219, 29745231, 297337, 297353, A47C 702
Patent
active
055755348
ABSTRACT:
A work chair comprising a backrest, a seat-pan, a fastening mechanism, and a support leg. The backrest is provided with a first fastening device. Theseat-pan comprises a pelvic support and a thigh support. The pelvic support is provided on the underside thereof with a rotary fastening unit and is further provided on a longitudinal median thereof with a second fastening device. The fastening mechanism comprises a vertical fastening portion engageable with the first fastening device of the backrest for adjusting the backrest upwards and downwards. The fastening mechanism further comprises a horizontal fastening portion engageable with the second fastening device of the seat-pan for adjusting the longitudinal depth of the seat-pan. The support leg is provided with a rotary fastening member engageable with the rotary fastening unit of the seat-pan. The thigh support of the seat-pan is arranged at an inclination ranging between 15 and 35 degrees in relation to the pelvic support of the seat-pan, so as to enable the trunk and the thighs of a person seated on the seat-pan to form an angle ranging between 100 and 120 degrees.
REFERENCES:
patent: 2054557 (1936-09-01), Cramer et al.
patent: 2692012 (1954-10-01), Cramer
patent: 4690459 (1987-09-01), Ullman
patent: 5035466 (1991-07-01), Mathews et al.
patent: 5037158 (1991-08-01), Crawford
patent: 5112106 (1992-05-01), Ashjornsen et al.
Catalog of the TB-S Series of work chairs for secretaries manufactured by tung Co., Taiwan.
Barfield Anthony D.
Cuomo Peter M.
Institute of Occupational Safety and Health, Council of Labor Af
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