Chair back with polymer spring

Details Chair back with polymer spring Chair back with polymer spring

1977-11-30

1979-01-23

Shedd, Wayne L.

Joints and connections

Articulated members

Pivoted

297291, 267150, F16C 1100, F16D 112

Patent

active

041358368

ABSTRACT:
A chair back mounted on a chair back support plate is pivotally connected by a resilient arrangement to a housing slideably mounted on a vertical post. The resilient arrangement includes a member of a resilient material with ends, each end having enlarged heads with an opening extending through the heads and a pivot groove positioned between the enlarged heads. Upon application of an external force, the chair back pivots about the groove and compresses the enlarged heads thereby closing the opening through the enlarged heads.

REFERENCES:
patent: 2732003 (1956-01-01), Corning
patent: 2796920 (1957-06-01), Cowles
patent: 3856325 (1974-12-01), Willetts
patent: 3934930 (1976-01-01), Sandham
patent: 4043592 (1977-08-01), Fries

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