Chairs and seats – Back movement resiliently opposed in operating position – Constantly oriented during up-and-down movement
Patent
1980-09-03
1983-05-24
Zugel, Francis K.
Chairs and seats
Back movement resiliently opposed in operating position
Constantly oriented during up-and-down movement
297328, 297365, A47C 300
Patent
active
043847412
ABSTRACT:
A compact, optically inconspicuous tilting device for seating units, to be attached underneath a seat including a casing disposed beneath a seat resting on the understructure of the seating unit, a seat carrier pivotably mounted about a horizontal axis to the front edge area of said seat, mechanical locking means for connecting the seat carrier within the casing including first locking members successively arranged in at least two planes parallel to the swivel axis of the seat carrier and staggered towards each other and second locking members engageable with said first locking members, a rest member connected to said casing including a shank member, a link member interconnecting said seat carrier with the shank member, a bearing member connected to said casing operably engageable with said shank member to the rest member, at least one spring element mounted on said casing which acts at one end of the seat carrier opposite to the load of the user, and bistable activation lever means for activating said mechanical locking means, accessible to the user of the seat unit in such a manner that, in a first operable position, said second locking members are disengaged from said first locking members and, in a second operable position, at least one of said second locking members is engaged with said first locking members.
REFERENCES:
patent: 2319700 (1943-05-01), Miller et al.
patent: 2321385 (1943-06-01), Herold
patent: 2447601 (1948-08-01), Sengpiel
patent: 2471024 (1949-05-01), Cramer
patent: 2650646 (1953-09-01), Herold et al.
patent: 3034828 (1962-05-01), Kurihara
patent: 3434756 (1969-03-01), Walkinshaw
Flum Manfred
Ziegler Horst
Christof Stoll GmbH & Co. KG
Zugel Francis K.
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