Chairs and seats – Movable back – Tiltable
Patent
1998-09-03
1999-11-23
Nelson, Jr., Milton
Chairs and seats
Movable back
Tiltable
29735412, B60N 202
Patent
active
059887516
ABSTRACT:
Each of a base member and a rotational arm is circular. A ring member is fixed to a peripheral edge of the base member. A peripheral edge of the rotational arm is covered by the ring member and one end of a return spring is engaged with a hook portion formed in the ring member. The other end of the return spring is engaged with fixing members such as bolts, nuts and rivets and so on. A peripheral edge of the nuts as the fastening members is formed in a guide portion for the return spring.
REFERENCES:
patent: 4076309 (1978-02-01), Chekirda et al.
patent: 4184714 (1980-01-01), Courtois
patent: 5161856 (1992-11-01), Nishino
patent: 5590931 (1997-01-01), Fourrey et al.
patent: 5692589 (1997-12-01), Beguin
patent: 5727846 (1998-03-01), Yoshida
patent: 5857746 (1999-01-01), Barrere et al.
Eguchi Moriyuki
Yoshida Tomonori
Ikeda Bussan Co. Ltd.
Jr. Milton Nelson
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