Supports – Resilient support – Including load sustaining bearing or guide
Reexamination Certificate
1999-02-18
2001-07-24
King, Anita M. (Department: 3632)
Supports
Resilient support
Including load sustaining bearing or guide
C248S550000, C248S631000, C267S064190
Reexamination Certificate
active
06264163
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a vehicle seat with a seat which can normally move between a lower end position and an upper end position and first means capable of cushioning/dampening movements of the seat in a vertical direction.
BACKGROUND TO THE INVENTION
Driver comfort and ergonomics are areas in which a lot of work and improvements have been made, and especially driver comfort for vehicles in commercial traffic, such as long-distance lorries and buses. Since the vehicle is the driver's workplace, where he spends several hours, it is necessary for comfort and thus the working environment to be as satisfactory as possible. A lot of work has therefore been put into the vehicle suspension on the one hand and the suspension of driver's cabs on the other. Furthermore, driver's seats have been improved as regards possibilities for adjustment to achieve the optimum sitting position and suspension.
However, it has proved to be the case that the suspension of the seat is disadvantageous in certain situations. In the event of heavy braking or collisions, the driver and the seat are exposed to forces directed forwards/upwards, which are amplified by the suspension and height adjustment devices of the seat. Moreover, in certain situations and for certain road conditions the various suspension systems in the vehicle can come to act in opposition, so that the seat suspension system amplifies irregularities instead of dampening these.
DESCRIPTION OF THE INVENTION
The object of the present invention is to provide a device capable of locking the seat at the desired height and blocking the seat's movements when it is exposed to strong acceleration upwards.
This is achieved according to an aspect of the invention by a device for a vehicle seat of the type specified in the introduction, characterised in that the seat comprises means capable of locking the position of the seat cushion at an optional height between said end positions.
According to an aspect of the invention, a seat is provided which also comprises means capable of locking the seat's movement upwards when it is exposed to acceleration in this direction.
These and other aspects and advantages of the present invention will become clear from a detailed description of a preferred embodiment of the invention and the following patent claims.
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BE-GE Industri Aktiebolag
Kilpatrick & Stockton LLP
King Anita M.
Marcou George T.
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