Shock absorbing apparatus |
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| 申请号 | US34603973 | 申请日 | 1973-03-29 | 公开(公告)号 | US3872799A | 公开(公告)日 | 1975-03-25 |
| 申请人 | VENISSIEUX ATEL; | 发明人 | DOUSSET REMY; | ||||
| 摘要 | A shock-absorption apparatus for insertion between loads, which may or may not be on pallets, conveyed in vehicles, or between the loads and the walls of the vehicle. | ||||||
| 权利要求 | 1. Shock-absorption apparatus for insertion between loads conveyed in a vehicle, or between a load and a wall or a partition of the vehicle, characterized by the fact that it consists of at least one assembly consisting of two rigid, tight panels, connected by a flexible, tight joint, the whole enclosing a volume of air communicating with the atmosphere through a measured orifice of small cross-section impeding the flow of air from the apparatus, the two panels when in use being held apart from each other by elastic elements having negligible shock absorption applying a force simply sufficient to bring the panels into the maximum separation position when the shock-absorption apparatus is in use in the free state, in the absence of any external influence. 2. Shock-abosrption apparatus as described in claim 1, characterised by the fact that to the measured orifice is added a valve which allows passage of a large flow of air, in the direction for filling the volume and closes when the interior air tends to be expelled to the outside. 3. Shock-absorption apparatus as described in claim 1 characterised by the face that is also includes a claibrated valve allowing a more rapid inward than outward passage of air when the internal pressure exceeds a predetermined value. 4. Shock-absorption apparatus as described in claim 1, characterised by the fact that the elastic elements are springs. 5. Shock-absorption apparatus as described in claim 1, characterised by the fact that the elastic elements are blocks of eLastomer. 6. Shock-absorption apparatus as described in claim 1, characterised by the fact that the elastic elements are small, tight, elastic capacities filled with air. 7. Shock-absorption apparatus as described in claim 1, characterised by the fact that the tight, flexible joint connecting the two plates is an annular, elastic device approximately following the periphery of the two plates and constituting by itself the elastic element for separation of the plates. 8. Shock-absorption apparatus as described in claim 7, characterised by the faact that the annular, elastic device is glued to each of the two plates. 9. Shock-absorption apparatus as described in claim 7, characterised by the fact that the two panels are connected by ties allowing free relative motion of the panels towards each other and limiting their maximum separation to a value maintaining light initial compression of the elastic device. 10. Shock-absorption apparatus as described in claim 7, characterised by the fact that the annular elastic device is a closed tube filled with air at low pressure. 11. Shock-absorption apparatus as described in claim 7, characterised by the fact that the annular elastic device is a strip of elastic foam. 12. Shock-absorption apparatus as described in claim 11, in which the foam has closed cells, characterised by the fact that the measured orifice is formed in the foam. 13. Shock-absorption apparatus as described in claim 11, characterised by the fact that the foam has open cells, all the holes in this foam constituting the functional equivalent of the measured orifice communicating the volume of air entrapped between the panels with the atmosphere. 14. Shock-absorption apparatus as described in claim 7, characterised by the fact that the annular elastic device consists of a closed tube connected to a manual, low-pressure inflation apparatus, the two plates moreover being connected by elastic organs which tend to bring them together to the maximum when the tube is deflated. 15. Shock absorption apparatus as described in claim 14, characterised by the fact that the tube is closed on itself and that a measured orifice is formed in one of the plates. 16. Shock-absorption apparatus as described in claim 14, characterised by the fact that the tube is closed at its two ends, but these ends are not contiguous and form a slight gap between them constituting the measured orifice. 17. Shock-absorption apparatus as described in claim 14, characterised by the fact that the tube is enclosed in non-tight bag surrounding it about its external periphery. 18. Shock-absorption apparatus as described in claim 17, characterised by the fact that the non-tight bag is of a tight material and has an opening adjacent to the measured orifice. 19. Shock-absorption apparatus as described in claim 17, characterised by the face that the non-tight bag is a large mesh material allowing passage of air. 20. Shock-absorption apparatus as described in claim 16, and in which the tube is enclosed in a non-tight bag, characterised by the fact that the bag is of a tight material closed by peripheral lacing through wich the air can pass in the zone of the space between the non-contiguous ends of the tube. 21. Shock-absorption apparatus as described in claim 14, characterised by the fact that the manual inflation apparatus is attached to one of the panels and is connected to the tube by a three-way tap, enabling either the inside of the tube to be isolated or to be placed in communication with the inflation apparatus or with the atmosphere. |
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