Back support tilt and seat and back support height control mecha

Details Back support tilt and seat and back support height control mecha Back support tilt and seat and back support height control mecha

1983-06-10

1985-12-31

Kannan, Philip C.

Chairs and seats

Back movement resiliently opposed in operating position

Constantly oriented during up-and-down movement

297305, 297345, 297355, A47C 330

Patent

active

045616930

ABSTRACT:
Tilt control for a back support and height control for the back support and a seat for a chair or the like are provided by a gas cylinder actuator having a cam surface and pivotally mounted so that the cam surface activates the gas cylinder. A blocker plate is pivotally mounted for movement between one position in which it prevents tilting of the back support and another position in which tilting is permitted. The actuator and blocker plate are coupled together so that pivotal movement of one is accompanied by pivotal movement of the other.

REFERENCES:
patent: 2015138 (1935-09-01), Drake
patent: 2153327 (1939-04-01), Herold
patent: 2208561 (1940-07-01), Jungbauer
patent: 2420745 (1947-05-01), Harman
patent: 2424753 (1947-07-01), Herold
patent: 2447601 (1948-08-01), Sengpiel
patent: 3042448 (1962-07-01), Hamilton
patent: 3434756 (1969-03-01), Walkinshaw
patent: 3756654 (1973-09-01), Bauer
patent: 3880465 (1975-04-01), Scheben
patent: 4013257 (1977-03-01), Paquette
patent: 4018415 (1977-04-01), Wolters
patent: 4099775 (1978-07-01), Mizelle
patent: 4328943 (1982-05-01), Eldon, III

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