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1. (WO1999011484) SEAT WEIGHT SENSOR WITH MEANS FOR DISTRIBUTING LOADS

Pub. No.:    WO/1999/011484    International Application No.:    PCT/US1998/018516
Publication Date: Mar 11, 1999 International Filing Date: Sep 4, 1998
IPC: B60N 2/00
B60R 21/01
G01G 5/04
G01G 19/414
Applicants: AUTOMOTIVE SYSTEMS LABORATORY, INC.
Inventors: VAN VOORHIES, Kurt, L.
Title: SEAT WEIGHT SENSOR WITH MEANS FOR DISTRIBUTING LOADS
Abstract:
A hydrostatic weight sensor (10) incorporates a load distributor (400) to prevent the bladder of the hydrostatic weight sensor (10) from bottoming out under the influence of applied loads of sufficient concentration and magnitude. The load distributor (400) comprises a flexible mat proximate a load bearing surface of the hydrostatic weight sensor, wherein the flexible mat may be constructed from slitted, punched, pierced, or expanded semi-rigid sheet, a multi-layer plurality of such sheets, or a woven assembly of a plurality of semi-rigid strips (410, 420). The load distributor (400) is sufficiently flexible to not interfere with seating comfort, yet sufficiently stiff to prevent the bladder of the hydrostatic weight sensor (10) from bottoming out as a result of concentrated loading.