( 4077 of 4077 ) |
United States Patent | 3,572,465 |
Olson | March 30, 1971 |
Impact is attenuated by a hollow resilient elongated one-piece body formed by a substantially flat reinforced rear wall, a top wall and front, side and bottom walls defining a cavity which is filled with water. A plurality of apertures are provided in the top wall, each of which apertures is defined by resilient walls and is closed by a resiliently deformable plug in frictional engagement with the aperture walls. In response to a strong impact against the front wall of the body, a series of physical steps occur which result in ejecting the plugs from, followed by water from the cavity upwardly through, the apertures.
Inventors: | Olson; William Carl (Wst Sacramento, CA) |
Assignee: |
Thunder Enterprises
(West Sacramento,
CA)
|
Appl. No.: | 04/535,443 |
Filed: | March 18, 1966 |
Current U.S. Class: | 188/377 ; 188/155; 188/266; 215/306; 215/358; 220/801; 244/138R; 256/13.1; 267/116; 267/139; 404/10 |
Current International Class: | B60R 19/18 (20060101); B60R 19/20 (20060101); B60r 019/08 (); B61f 019/04 (); F16d 063/00 () |
Field of Search: | 94/1.5 215/52,99 220/38.5 244/138 256/13.1 293/1,60,62,63,69,70,71,48,51 (F)/ 293/52 (F)/ 293/71 (P)/ 267/116,139 215/1.5 |
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