Chair

Details Chair Chair

1994-07-21

1997-02-11

Cranmer, Laurie K.

Chairs and seats

Back movement resiliently opposed in operating position

Back and bottom adjust in a fixed relationship

2973002, A47C 300

Patent

active

056013370

ABSTRACT:
The present device relates to a chair in which a base member is fitted onto an upper portion of a leg comprising a plurality of castors in contact with a floor together with support members for these castors, and a seat portion and a back rest are provided on an upper portion of a support plate that is capable of reclining with respect to the base member. This chair is also provided with a cam-shaped link capable of rotating about the periphery of a pin provided in the base member, an upper portion of the link protrudes towards the support plate side, and a corresponding elastic member that is compressed by the rotation of the link is provided in a bottom portion of the base member. A shaft portion in contact with the link, and which causes the link to change profile in response to the reclining action, is provided within the support plate. This configuration provides a chair that is inexpensive and can naturally adopt either a serious working position or a relaxed reclining position.

REFERENCES:
patent: 2447601 (1948-08-01), Sengpiel
patent: 3417956 (1968-12-01), Helms
patent: 5033791 (1991-07-01), Locher
patent: 5348371 (1994-09-01), Miotto

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