| 摘要 |
<PICT:0856878/IV(a)/1> A substantially rigid inner member made from a rubber composition is mounted within a substantially rigid cylindrical outer member by bonding a plurality of longitudinally extending resilient strips to one of the members, inserting the inner member within the outer member, and subsequently applying a bonding composition between each resilient strip and the other member. A rocket grain 16 comprising a solid oxidant and rubber is mounted within a case 15 using the apparatus shown. Resilient strips 26 are attached to either the grain or the case and the grain is then introduced into the case which is held by clamps 41, 43. Plate 48, which has depending fingers 49 and adhesive supply tubes 51, is lowered so that the fingers are positioned between the resilient strips and either the grain or the case. Clamp 66 is then tightened so that on withdrawing the fingers 49, adhesive, e.g. rubber cement, flows through tubes 51 from cylinder 61. |
