Gm Global Technolgoy Operations, Inc.

Eric D Carlson

Jack E Smith

Philip Wendel Hopf

Robert L Jones

Richard A Muzechuk

A cover assembly for an occupant restraint system is formed of relatively irrupturable material and includes longitudinal and lateral portions which overlie like portions of a container housing an inflatable occupant restraint cushion. The juxtaposed edges of these portions are arranged which are juxtaposed to each other across a tear line of the container. One edge of each pair terminates in a U shaped return bent flange and the other edge of each pair terminates in an S shaped return bent flange having a flap which extends across the tear line and abuts the U shaped flange.

Cover assembly for occupant restraint system

A hydraulic mount assembly is disclosed having a partition including a hydraulic damping decoupler between two hydraulic chambers. One chamber is formed by an elastomeric member and the other by a resilient diaphragm. During dynamic loading of the mount, fluid passes between the two chambers of the mount causing expansion and contraction of the diaphragm. A pneumatic bladder is positioned to exert external pressure against the diaphragm in order to change the damping characteristics of the mount. As the bladder is expanded, the diaphragm is stiffened and the fluid flow between the two chambers in the hydraulic mount is restricted. When the bladder is deflated, the pressure against the diaphragm is reduced or effectively removed thereby restoring full freedom of movement of the fluid in the hydraulic mount. By actively controlling the diaphragm expansion in this manner, the dynamic characteristics of the mount are varied. A control circuit with on-board transducers is provided to monitor vehicle operating and road response conditions and modulate the pressure to the bladder for maximum damping effect. The on-board transducers sense selected parameters to indicate unusual conditions for which modulation is required, such as rough engine operation, engine lugging, rough road conditions, sudden turning and/or rapid acceleration/deceleration.

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Dayton, OH, United States of America

Eric D Carlson