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HEAD-REST OF THE SHOCK ABSORBING SYSTEM

  • US 3,680,912 A
  • Filed: 09/14/1970
  • Issued: 08/01/1972
  • Est. Priority Date: 09/14/1970
  • Status: Expired due to Term
First Claim
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1. A head-rest comprising in combination:

  • a. an outer cover (11) with an inner wall defining a hollow space therein;

    b. a resilient tubular hollow first member (12) along one side of said inner wall with a fluid (13) therein;

    c. a resilient hollow absorbing second member (16) within said hollow space;

    d. a resistance valve connection (31) between said first and second members including first and second tube-like parts (32,

         33), a constriction (34) between said parts with grooves (35) therein limiting fluid flow between said members; and

    , e. fixing rods (25) for connection of said head-rest to a vehicle component, whereby, when subjected to a shock, said shock is absorbed by said constricted fluid flow across said resistance connection.

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