Vehicle bed |
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| 申请号 | US3752526D | 申请日 | 1971-06-15 | 公开(公告)号 | US3752526A | 公开(公告)日 | 1973-08-14 |
| 申请人 | SCHRIER J; HART J; BURGT GERRIT V D; | 发明人 | VAN DER BURGT G; HART J; SCHRIER J; | ||||
| 摘要 | A vehicle bed comprises a platform for carrying a lying person, e.g. a patient, a maximum shock insulation being contemplated, which is obtained by a mass-spring system for the platform having a very low natural frequency of approximately 0.5 Hz, the platform being fixed against horizontal displacement by fixing means which act in the centre of gravity of the carrier platform loaded with a person. | ||||||
| 权利要求 | 1. A bed for use in a vehicle comprising: platform means for carrying a person in a reclining position, horizontal retaining means for preventing substantial movement of said platform in a horizontal direction and attached to said platform in such a manner as to be acting thereon substantially at the level of the center of gravity of said platform loaded with a person, adjustable spring means for resiliently supporting said platform in a substantially horizontal position in such a manner that the natural frequency of vibration of said platform while loaded and said spring means is less than the lowest natural frequency of a vehicle upon which it is mounted, and which spring means may be independently adjusted so as to functionally dispose said platform while loaded, in an inclined position. 2. A vehicle bed according to claim 1, characterized in that the retaining means are formed by a linkage system extending substantially in the horizontal plane through the centre of gravity of the carrier platform loaded with a person. 3. A vehicle bed according to claim 1, characterized in that the retaining means are formed by guide means secured to the platform and extending substantially in the horizontal plane through the centre of gravity of the platform when loaded with a person, said guide means being guided along vertical guideways. 4. A bed as defined in claim 1 attached to a vehicle. 5. A vehicle bed according to claim 1, characterized in that the natural frequency of the mass-spring system, the mass being formed by the platform loaded with a person and the spring system by said adjustable vertical spring means is in the order of 0.5Hz. 6. A vehicle bed according to claim 1 characterized in that the spring means includes a set of levers which each act with a horizontal arm on the platform and with an arm shorter than said horizontal arm. 7. A vehicle bed according to claim 6, characterized in that the horizontal arms of the set of levers act on profiles of the carrier platform by means of profiled rollers. 8. A vehicle bEd according to claim 1, characterized by mounting means for attaching thereto the spring means along the wall of a vehicle and by levers whose horizontal arms each have a free end in the form of a bracket, extending transversely to the vehicle wall. 9. A vehicle bed according to claim 7, characterized in that the free end of each horizontal arm carries the profiled rollers. 10. A vehicle bed according to claim 8, characterized in that the free ends of the horizontal arms of the levers are slewable about a longitudinal axis of the vehicle between a vertical rest position and a horizontal operating position. 11. A vehicle bed according to claim 1, characterized in that the effective spring rigidity acting on the carrier platform is adjustable so as to adapt same to the weight of a person lying on the carrier platform. |
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