EP0173372A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Sitting furniture, in particular a swivel-chair
Assignee: CIRKEL BV
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Filing: 1985-07-19
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Granted: —
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Expires: 2005-07-19
Abstract
Abstract © A swivel-chair (10) has a frame (15) on which a seat (24) is movably mounted. A back (22) is connected with the seat (24), and this back (22) may be turned around a connecting point (19) at the frame (15). At this connecting point (19) a rotary spring (40) is provided, which tends to turn the back (22) into its working position, and the seat (24) is supported and guided at a seat-guide (31) at its forward area, that is where the thighs of the user are resting. This seat-guide (31) is preferably made such, that it will keep the inclination of the seat (24) on movement thereof, thus the so-called seat-slope, at an ergonomically advantageous value. A movement into the rest position goed against the rotary spring (40) and if required also the seat-guide (31 Optionally a blocking-device (45) for the seat (24) may also be provided in order to be able to block the seat (24) in any desired position in accordance with the wishes of the user.
Inventors
- 👤 Angela Uredat-Neuhoff
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 23:55
CPC Classifications
A; A47; A47C; A47C1/00; A47C1/02; A47C1/031; A47C1/032; A47C1/03261; A47C1/03288; A47C1/03255
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
163 words
Sitting furniture, in particular a swivel-chair (10; 70), with a frame (15; 71), a seat (24; 79) and a back (22; 77) hingingly connected therewith, the latter being turnably mounted at a section of the frame extending beyond the seat-plane at two mounting-positions (19; 76), whereby the seat is supported on the frame by means of a seat-guide, provided at the front section of the seat, and is movable in longitudinal direction forward and backward, in order to allow a sitting position between a rest position (Fig.3; Fig.12) and a working position (Fig.l; Fig.10) and provided with a spring arrangement (40; 96), which tends to force the seat and back in the direction of the working position, Charaterized in that, the spring arrangement (40; 96) in the area of at least one mounting position (19; 76) is positioned between the back (22; 77) and the section of the frame extending beyond the seat-plane (15; 71) and always being constructed as a rotary spring.
Claim 2
Dependent Claim
163 words
Sitting furniture, in particular a swivel-chair (10; 70), with a frame (15; 71), a seat (24; 79) and a back (22; 77) hingingly connected therewith, the latter being turnably mounted at a section of the frame extending beyond the seat-plane at two mounting-positions (19; 76), whereby the seat is supported on the frame by means of a seat-guide, provided at the front section of the seat, and is movable in longitudinal direction forward and backward, in order to allow a sitting position between a rest position (Fig.3; Fig.12) and a working position (Fig.l; Fig.10) and provided with a spring arrangement (40; 96), which tends to force the seat and back in the direction of the working position, Charaterized in that, the spring arrangement (40; 96) in the area of at least one mounting position (19; 76) is positioned between the back (22; 77) and the section of the frame extending beyond the seat-plane (15; 71) and always being constructed as a rotary spring.
Claim 3
Dependent Claim
19 words
Sitting furniture according to claim 1, characterized in that the rotary spring (40; 96) is made as pressure spring.
Claim 4
Dependent Claim
108 words
Sitting furniture according to claim 1 or 2, charac terized in that about along the same axis to the mounting position (19; 76) a free space (39; 94) is provided at the frame or at the back, in which an elastically compressable body (40; 96) is located with one end adjoining a catch (42; 95) in this free space, and that at the corresponding counter part, thus back or frame, a part (38; 93) is provided accepting the other end of this body, which on movement of the back (22; 77) into its rest position forces this body (40; 96) in the direction against this catch (42, 95).
Claim 5
Dependent Claim
54 words
Sitting furniture according to claim 3, characterized in that a part (19; 76) with about circular cross-section is provided at the section of the frame extending beyond the seat-plane, in which the free space (39; 94) at about the same axis as the mounting position, is provided for the elastically compressable body (40; 96).
Claim 6
Dependent Claim
41 words
Sitting furniture according to at least one of the preceding claims, characterized in that a corresponding guide (31; 83) for the front section of the seat (24; 79) is provided for the automatic adjustment of the seta-slope for the relevant seat-position.
Claim 7
Dependent Claim
51 words
Sitting furniture according to claim 5, characterized in that this seat-guide is made such, that the seat (24; 79) in the working position is essentially horizontal, or has a slight inclination forward, and that it is inclined backward in the test position, i.e. in the direction of the back (22; 77).
Claim 8
Dependent Claim
35 words
Sitting furniture according to claims 5 or 6, characterized in that this seat-guide shows a longitudinal hole (31; 83), which in the normal position of the sitting furniture is inclined with respect to the horizontal.
Claim 9
Dependent Claim
30 words
Sitting furniture according to at least one of the preceding claims, characterized in that a blocking-device (45) for blocking of the seat (24) against movement in longitudinal direction is provided.
Claim 10
Dependent Claim
16 words
Sitting furniture according to claim 8, characterized in that the blocking-device is made for stageless blocking.
Claim 11
Dependent Claim
73 words
Sitting furniture, according to claims 8 or 9, characterized in that the blocking-device (45) has a bar (62) connected with the seat (24), that this bar (62) is provided with at least one clamping-element (52, 53) arranged at the frame (13) of the sitting furniture (10), said clamping-element having a free space (61) through which the bar (62) extends, which in the blocked position in in clamping connection (Fig.4) with the bar (62).
Claim 12
Dependent Claim
25 words
Sitting furniture according to claim 10, characterized in that the bar (62) has a cross-section deviating from circular cylinder form, in particular a polygonal cross-section.
Claim 13
Dependent Claim
29 words
Sitting furniture according to claims 10 or 11, characterized in that the bar (62) is provided with two clamping-elements (52, 53) for the blocking in both directions of movement.
Claim 14
Dependent Claim
33 words
13 Sitting furniture according to at least one of the claims 10 to 12, characterized in that the clamping-elements (52, 53) occupy a position cross to the bar (62) in the blocking position.
Claim 15
Dependent Claim
32 words
14 Sitting furniture according to at least one of the claims 10 to 13, characterized in that the connection (63) of the bar (62) to the seat is made adjustable in height(64')
Claim 16
Dependent Claim
60 words
Sitting furniture according to at least one of the claims 10 to 14, characterized in that at least one clamping-element (52,53). is made rotatable around a shaft (54, 55) extending perpendicular to the longitudinal axis of bar (62), and that an operating element (46, 46') is provided for rotating this clamping-element around this shaft in a direction releasing the blocking.
Claim 17
Dependent Claim
36 words
Sitting furniture according to at least one of the claims 10 to 14, characterized in that a spring (60) is provided for exerting a force on at least one clamping-element (52, 53) in the clamping direction.
Claim 18
Dependent Claim
26 words
Sitting furniture according to claims 10 and 15, characterized in that the spring (60) is made as an elastomeric part between the two clamping-elements (52, 53).
References Cited (Backward Citations)
No citation records indexed.
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