Memory seat with soft and hard travel limits

Details Memory seat with soft and hard travel limits Memory seat with soft and hard travel limits

1997-03-04

1998-06-16

Nelson, Jr., Milton

Chairs and seats

Movable bottom

Bottom and back movable as a unit

A47C 102

Patent

active

057659168

ABSTRACT:
A vehicle seat system includes a motor moving a seat along a path between mechanical limits. A sensor measures the position of the seat along the path. A control module defines a soft-limit when the sensor detects that movement of the seat has stopped for a first predetermined time interval, but the motor is activated. The control module subsequently ceases movement of the seat at the soft-limit when no movement of the seat is detected for a second predetermined time interval less than the first predetermined time interval, indicating a soft stall. The control module defines a hard-limit after a predetermined number of soft stalls. The control module subsequently ceases activation of the motor just before the seat reaches a hard-limit.

REFERENCES:
patent: 4721337 (1988-01-01), Tomita
patent: 5285193 (1994-02-01), Ogasawara
patent: 5292178 (1994-03-01), Loose et al.
patent: 5348373 (1994-09-01), Stiennon
patent: 5633571 (1997-05-01), Huyer

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