Device for adjusting the inclination of the seating portion in chairs in general
First Claim
1. A chair, comprising:
- a seating portion,a back rest portion,a device for adjusting the inclination of the back rest portion, the device comprising,a housing,a plate pivotably, connected to the housing, the plate having holes,a locking member connected to the housing,a locking bolt axially slidable with the locking member, for engagement with holes in the pivotable plate,an actuator for moving the locking bolt,a rod extending between the actuator and the locking bolt;
wherein the rod extends into a piston, the end of the rod provided with an enlargement, and a first and second spring within the piston bearing against the enlargement.
2 Assignments
0 Petitions
Accused Products
Abstract
A device for adjusting the inclination of the seating portion in chairs in general, to be applied to a support for the seating portion formed in at least two parts (2, 12) hinged together about a transverse axis (14) and associated with a spring (20) interposed between them to elastically maintain the back rest of the chair in its most forwardly inclined position, and also associated with a locking member (24) to maintain them in other predetermined positions corresponding to different inclinations of the back rest, characterised by comprising: a locking bolt (26) forming part of the locking member (24) and fixed to one (2) of the two parts (2, 12) of the support for the seating portion, a plurality of holes (22) provided in the other part (12) of the support for the seating portion in positions engageable by the bolt (26) and corresponding to different relative inclinations between the two parts (2, 12) of the support, a rod (30) for axially operating the bolt (26), an axially bistable device (34) for controlling the rod (30), a pair of preloaded springs (50, 52) interposed between the rod (30) and the bistable device (34), and an operating pusher (46) for the bistable device (34).
13 Citations
17 Claims
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1. A chair, comprising:
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a seating portion, a back rest portion, a device for adjusting the inclination of the back rest portion, the device comprising, a housing, a plate pivotably, connected to the housing, the plate having holes, a locking member connected to the housing, a locking bolt axially slidable with the locking member, for engagement with holes in the pivotable plate, an actuator for moving the locking bolt, a rod extending between the actuator and the locking bolt; wherein the rod extends into a piston, the end of the rod provided with an enlargement, and a first and second spring within the piston bearing against the enlargement. - View Dependent Claims (2, 3)
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4. A chair, comprising:
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a seating portion, a back rest portion, a device for adjusting the inclination of the back rest portion, the device comprising, a housing, a plate pivotably, connected to the housing, the plate having holes, a locking member connecting to the housing, a locking bolt axially slidable with the locking member, for engagement with holes in the pivotable plate, an actuator for moving the locking bolt, a rod extending between the actuator and the locking bolt; wherein the rod extends into a piston, the end of the rod provided with an enlargement, and a first and second spring within the piston bearing against the enlargement; and means for adjusting the height of the chair, a lever for activating the means for adjusting the height, the actuator housed within the lever.
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5. A device for adjusting the inclination of a back rest portion in a chair, said chair comprising a seating portion and a back rest portion, said device comprising:
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a support consisting of at least first and second parts hinged together about a transverse axis, a spring interposed between said first and second parts, a locking member, a locking bolt axially slidable with said locking member and fixed to said first part of the support, a plurality of holes provided in the second part of the support, said holes being engageable by the locking bolt and corresponding to different relative inclinations between said first and second parts of said support, a rod for axially operating said bolt; an axially bistable device for controlling said rod, first and second preloaded springs interposed between said rod and said bistable device, and an operating pusher for said bistable device. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification