New device for the utilization of india-rubber as spring
申请公布号:GB737405(A)
申请号:GB19530030373
申请日期:1952.12.01
申请公布日期:1955.09.28
分类号:B60G17/00;B60G17/04;F16F1/44;F16F3/12;F16F9/30
主分类号:B60G17/00
摘要:<p>737,405. Springs. JARRET, J. M. B., and JARRET, J. H. Dec. 1, 1952 [Dec. 6, 1951; Nov. 19, 1952], No. 30373/52. Class 108 (3). [Also in Groups V and XXII] A spring comprises a rubber mass 1 filling a closed casing 2 which is capable, under the action of an axial force F, of being non-permanently deformed so as to result in a decrease in its internal capacity. The casing 2, shown, is of stainless steel and is formed with corrugations 2a which are maintained, while the spring is under load, by hightensile steel hoops 6. The hoops may be shaped (Fig. 6) so that at maximum deflection (as shown) they come into abutment and wholly enclose the corrugations of the casing 2. The rubber 1 is vulcanized and may be a silicone rubber. Under compression of the spring, the rubber is reduced in volume, and the rubber within the corrugations flows into the main mass of rubber with a damping action. Considerable damping occurs on rebound. The spring is made by filling a non-corrugated stainless steel tube with unvulcanized or partly vulcanized rubber, closing the ends of the tube, and placing it in a mould which is shaped to correspond with the corrugations 2a. The hoops 6 are held in the mould in their correct positions relative to the tube 2 and relative to the corrugations of the mould. Axial pressure is then applied so that the tube 2 is made to conform with the mould. The pressure is then relaxed and the rubber 1 is then vulcanized. In the construction of the spring of Fig. 6, the hoops themselves, held in abutment, comprise the mould. The tube 2 may be of laminated form by coiling a strip of stainless steel sheet into a helix.</p>
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