Blind connecting structure for inner and outer shells of chair b

Chairs and seats – Bottom or back – Framework

Patent

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Details

297444, 403372, A47C 740

Patent

active

043902103

ABSTRACT:
A back structure for a chair including a cushion overlying an interior panel. The cushion has edge portions which wrap around the interior panel. A back panel is spaced from the interior panel, and the opposed edge portions of the panels clamp the edge portions of the cushion therebetween. A plurality of hidden connecting structures fixedly join the panels together. The connecting structure comprises a hub fixed to and projecting outwardly from one of the panels, and a shaft-like projection fixed to the other panel and projecting therefrom into the hub. A one-piece resilient fastener ring is positioned within the hub and has a first set of spring teeth which grippingly engage the hub and a second set of spring teeth which grippingly engage the projection for preventing the latter from being axially withdrawn from the hub.

REFERENCES:
patent: 2440470 (1948-04-01), Greitzer
patent: 2621947 (1952-11-01), Markvart
patent: 2630857 (1953-03-01), Cohen
patent: 2673600 (1954-03-01), Cramer
patent: 2950937 (1960-08-01), Bedford
patent: 3007726 (1961-11-01), Parkin
patent: 3037814 (1962-06-01), Gardner et al.
patent: 3295891 (1967-01-01), Brown
patent: 3345103 (1967-10-01), Parkin et al.
patent: 3483789 (1969-12-01), Wurzel

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