Vehicle occupant protection system

• US 7,591,481 B2
• Filed: 05/26/2006
• Issued: 09/22/2009
• Est. Priority Date: 05/27/2005
• Status: Active Grant

• Current Assignee: Joyson Safety Systems Acquisition, LLC
• Original Assignee: Automotive Systems Laboratory, Incorporated (Ningbo Junsheng Investment Group Co., Ltd.)
• Inventors: McCormick, David M.
• Primary Examiner(s): Nguyen; John Q.
• Assistant Examiner(s): Coker; Robert A.
• Application Number:
  US11/442,432
• Publication Number:
  US 20060279075A1
• Time in Patent Office: 1,215 Days
• Field of Search: 280/735, 280/736, 280/737, 280/740, 280/741, 280/742, 280/124.16, 280/5.514, 280/5.515, 280/6.157, 280/5.158
• US Class Current: 280/736
• CPC Class Codes: B60R 2021/26058 using a combination of inflators
• CPC Class Codes: B60R 2021/26094 characterised by fluid flow controlling valves
• CPC Class Codes: B60R 2021/2615 for diverting the gas into a plurality of bags
• CPC Class Codes: B60R 2021/2685 comprising a plurality of pressure chambers
• CPC Class Codes: B60R 2021/2765 comprising means to control the venting
• CPC Class Codes: B60R 21/26 characterised by the inflation fluid source or means to control inflation fluid flow arrangement or mounting thereof to the vehicle B60R21/20; blasting cartridges for producing gas under pressure in general F42B3/04; initiators or igniters therefor F42B3/10
• CPC Class Codes: B60R 21/268 using instantaneous release of stored pressurised gas B60R21/26005 takes precedence
• CPC Class Codes: B60R 21/272 with means for increasing the pressure of the gas just before or during liberation, e.g. hybrid inflators

Abstract

A vehicle occupant protection system includes a plurality of inflatable devices, at least one fluid source for supplying a pressurized fluid for the vehicle occupant protection system, and at least one gas-tight manifold coupled to the at least one fluid source for receiving pressurized fluid from the at least one fluid source. The at least one manifold is also coupled to the plurality of inflatable devices such that, upon activation of the vehicle occupant protection system, the plurality of inflatable devices receive from the at least one manifold sufficient pressurized fluid to inflate the plurality of inflatable devices.

Claims

1. A vehicle occupant protection system comprising:

an inflatable device;

a fluid source for supplying a pressurized fluid for the vehicle occupant protection system; and

a gas-tight manifold coupled to the at least one fluid source for receiving pressurized fluid from the at least one fluid source, the at least one manifold also being coupled to the inflatable device for supplying pressurized fluid to inflate the inflatable device upon activation of the vehicle occupant protection system, wherein, upon activation of the vehicle occupant protection system, all of the pressurized fluid entering the inflatable device is received from the manifold,

wherein the fluid source is adapted to supply pressurized fluid to the manifold when a pressure of fluid contained within the manifold falls below a predetermined pressure range.

2. The vehicle occupant protection system of claim 1 wherein the inflatable device is an airbag.

3. A vehicle occupant protection system comprising:

an inflatable device;

a fluid source for supplying a pressurized fluid for the vehicle occupant protection system; and

a gas-tight manifold coupled to the at least one fluid source for receiving pressurized fluid from the at least one fluid source, the at least one manifold also being coupled to the inflatable device for supplying pressurized fluid to inflate the inflatable device upon activation of the vehicle occupant protection system, wherein, upon activation of the vehicle occupant protection system, all of the pressurized fluid entering the inflatable device is received from the manifold, wherein the vehicle occupant protection system is installed in a vehicle, wherein the fluid source is powered by an engine of the vehicle, and

wherein, upon activation of the engine, the fluid source supplies pressurized fluid to the manifold until a pressure of fluid contained within the manifold falls within a predetermined pressure range.

4. The vehicle occupant protection system of claim 3 wherein the fluid source is adapted to supply pressurized fluid to the vehicle occupant protection system until the engine is deactivated.

5. An inflation system for selectively inflating at least one inflatable device of a plurality of inflatable devices residing in a vehicle, the system comprising:

at least one fluid source powered by an engine of the vehicle for supplying a pressurized fluid for inflating the at least one inflatable device of the plurality of inflatable devices;

a gas-tight manifold coupled to the at least one fluid source for receiving pressurized fluid from the at least one fluid source, the manifold also being coupled to the plurality of inflatable devices for supplying pressurized fluid to the plurality of inflatable devices; and

a flow control mechanism for selectively directing pressurized fluid from the manifold to the at least one inflatable device of the plurality of inflatable devices upon activation of the inflation system, wherein, upon activation of the engine, the at least one fluid source supplies pressurized fluid to the manifold until a pressure of fluid contained within the manifold falls within a predetermined pressure range.

6. The inflation system of claim 5 wherein flow of the pressurized fluid is selectively directed to the at least one inflatable device responsive to a control signal from a collision sensing device.

7. The inflation system of claim 5 wherein the flow control mechanism is positioned proximate a pressurized fluid outlet on the manifold, and in fluid communication with the inflatable device.

8. The inflation system of claim 5 wherein the flow control mechanism is positioned proximate the inflatable device.

9. The inflation system of claim 5 wherein the flow control mechanism comprises a valve system adapted to control a rate of flow of the pressurized fluid into the plurality of inflatable devices.

10. A vehicle occupant protection system comprising:

a plurality of inflatable devices;

at least one fluid source for supplying a. pressurized fluid for the vehicle occupant protection system;

at least one gas-tight manifold coupled to the at least one fluid source for storing pressurized fluid received from the at least one fluid source, the at least one manifold also being coupled to the plurality of inflatable devices such that, upon activation of the vehicle occupant protection system, the plurality of inflatable devices receive from the at least one manifold sufficient inflation fluid to inflate the plurality of inflatable devices; and

an inflator coupled to the at least one manifold for providing pressurized fluid to the at least one manifold in addition to any pressurized fluid residing in the at least one manifold,

wherein the at least one fluid source is adapted to supply pressurized fluid to the manifold when a pressure of fluid contained within the manifold falls below a predetermined pressure range.