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RAPIDLY INFLATABLE IMPACT CUSHIONING DEVICE FOR HIGH-SPEED TRAVELLING VEHICLE

  • US 3,843,150 A
  • Filed: 11/23/1971
  • Issued: 10/22/1974
  • Est. Priority Date: 11/24/1970
  • Status: Expired due to Term
First Claim
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1. A rapidly-inflatable impact cushioning device for use on a high-speed travelling vehicle, said device comprising a. A rapidly-inflatable cushioning bag member fixedly positioned on a support member, said cushioning bag member being provided with an air passage communicating with the atmosphere;

  • b. at least one unfoldable inflating bag member positioned within said rapidly-inflatable cushioning bag member and provided with a gas discharging outlet, said unfoldable bag member further being provided with gas-providing inflating means and being adapted to be inflated and unfolded when gas is received from said inflating means;

    said cushioning bag member being capable of receiving air from the atmosphere upon inflation of said unfoldable bag member, thereby permitting rapid and simultaneous inflation of both bag members when gas is received by said unfoldable bag member; and

    c. the hydraulic diameter of said air passage in said rapidly inflatable cushioning bag member and the hydraulic diameter of said gas discharging outlet in said unfoladable inflating bag member have the relationship expressed below;

    - 2/15 MD + 58 <

    OR = TD <

    OR = - 7/18 MD + 105, wherein TD stands for the hydraulic diameter of the gas discharging outlet in the unfoldable inflating bag member expressed in mm, and MD stands for the hydraulic diameter of the air passage in the main bag member expressed in mm.

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