Supports – Stand – Standard type
Reexamination Certificate
2004-11-19
2009-08-18
Chan, Korie (Department: 3632)
Supports
Stand
Standard type
C248S157000, C248S421000, C297S344120
Reexamination Certificate
active
07575206
ABSTRACT:
The invention relates to a vehicle seat comprising at least one gas spring (9) which damps vibration and adjusts the seat height, said gas spring being arranged between a seat frame (1) and a base frame (2), and comprising a valve arrangement (43, 44) for adjusting the pressure in the gas spring (9) and a compressor (45) assigned to the vehicle seat (17, 20, 23), said compressor having a drive motor for feeding compressed gas to the gas spring (9), wherein a belt roller device comprising a belt (11) rolled around an axle (12) is arranged between the seat frame (1) and the base frame (2), the first end (11a) of said belt being attached to a belt roller mechanism (10) arranged on the seat frame (1) and the second end (11b) of said belt being attached to the base frame (2), and a detector (16) which detects a belt rolling movement is attached to the seat frame (1). Use is made of an electronic control unit (14, 38, 40) for evaluating belt rolling movement signals detected within a predefined time period (26, 27, 29) for determining a seat height profile within the time period (26, 27, 29) and for controlling the valve arrangement (43, 44) and/or the compressor (45) such that automatic, time-delayed seat height re-adjustment takes place if the seat height profile (31, 35) determined for the time period (26, 27, 29) lies out of a position of symmetry in relation to a predefinable mean seat height (28). Also disclosed is a method for carrying out such automatic seat height adjustment.
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Office Action in corresponding application in China, No. 200410097619.5 and English translation thereof.
Burger Thomas
Hofmann Marco
Meier Johann
Ballard Spahr Andrews & Ingersoll LLP
Chan Korie
Grammer AG
Marsh Steven
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