Seat with adjustable lumbar supporter

Details Seat with adjustable lumbar supporter Seat with adjustable lumbar supporter

1979-07-11

1981-10-27

Zugel, Francis K.

Chairs and seats

Bottom or back with means to alter contour

A47C 746

Patent

active

042969654

ABSTRACT:
A backrest of a seat has therein an adjustable lumbar supporter which comprises a first rod member transversely crossing two side brackets of the backrest to be rotatable about the axis thereof, an arm member secured at one end to the first rod member, a second rod member rotatably supported by the arm member, a lumbar supporter proper fixed to the second rod member, a first control mechanism for forcing the lumbar supporter proper to swing about the axis of the first rod member when operated, and a second control mechanism for forcing the lumbar supporter proper to swing about the axis of the second rod member when operated.

REFERENCES:
patent: 3762769 (1973-10-01), Poschl
patent: 3948558 (1976-04-01), Obermeier
patent: 3973797 (1976-08-01), Obermeier
patent: 4148522 (1979-04-01), Sakurada
patent: 4159847 (1979-07-01), Arai

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