Abstract: A fluid-damped resilient bush, e.g. for use in a vehicle suspension comprises an outer sleeve and an intermediate sleeve between which a rubber bush is moulded as a one-piece moulding. Cavities are formed between the intermediate sleeve and an inner member, which is mounted within the one-piece moulding and sealed to the one-piece moulding by axially separate annular areas of the moulding which engage but are not bonded to the inner member. The cavities communicate with one another and are filled with damping fluid, the arrangement being such that displacement of the outer sleeve relative to the inner member causes displacement of fluid between the cavities.

Abstract: To facilitate eventual confirmation that an elongate article secured within an end fitting was fully inserted into the end fitting during assembly, the outer surface of the elongate article is provided with a two-part marking prior to assembly with the end fitting. The two-part marking is applied to the elongate article at a predetermined axial position from the end of the article such that in the case of a satisfactory assembly, in which for example the article is fully inserted in the end fitting, one part of the marking is exposed and another part is concealed. The exposed part serves to confirm that the article was marked prior to assembly with the end fitting and at least partial concealment of the other part of the marking confirms that the article extends sufficiently within the end fitting. The invention is especially suitable for confirming that in a hose assembly the end of a hose fully extends within the end fitting.

Abstract: A vehicle engine suspension system in which, in order to reduce `shake` electrically actuated engine mounts are provided, power being supplied to the engine mounts by a control system responsive to vehicle body accelerations (e.g. in the vertical direction). The arrangement is such that when a tendency of the body to move is detected, e.g. by an accelerometer mounted on the body, the engine mounts are actuated so as to generate, between the engine and the body, forces which are of such amplitude and phase as to reduce the shake of the body.

Abstract: A vehicle engine mounting arrangement wherein a pair of interconnected fluid-tight chambers containing gas are employed, one arranged between the engine and the body and the other arranged between the body and the suspension system. The two chambers are each deformable under load and changes of pressure which are communicated between the chambers act on the respective chambers so that dynamic forces exerted on the body via one chamber tend to be counteracted by corresponding oppositely directed forces exerted on the body via the other chamber, hence reducing shake.

Abstract: An exposure suit 10 has an attached lifejacket (14) which includes a part-annular rear portion (17) within a sheath (26) secured across the back of the shoulders of the suit 10 and a front portion 16 which is secured at (19) to the chest center of the suit. In a stowed deflated condition (FIG. 1) the portion (16) is folded or rolled to form a package restrained by a restraint such as a flap 31 on one side of a suit fastener (12), inflation of the lifejacket causing it to release its restraint and automatically to adopt a position overlying the chest of the suit (10) and wearer in a body supporting position.

Abstract: Air blast peening equipment includes a flow density transducer and a pressure or velocity transducer for measuring flow velocity. Measured values are compared during peening with predetermined desired values. Operation of the apparatus is automatically adjusted, if necessary, by adjustment of flow density and/or flow velocity to maintain these parameters at desired values.

Abstract: A thermoset polyurethane material which exhibits high, temperature-insensitive damping over a broad temperature range and has a tan .delta. (as hereinbefore defined) greater than 0.1 over the temperature range of from -40.degree. C. to 60.degree. C., a hardness in the range of from 0 to 90 Shore A, a compression set (as hereinbefore defined) of less than 15% and a tensile strength (as hereinbefore defined), of less than 30 kg/cm.sup.2, the polyurethane material being prepared by the reaction of(a) an essentially primary hydroxyl tipped polyol having a molecular weight in the range of from 2,500 to 8,000;(b) a polyhydric alcohol;(c) an aliphatic monohydric primary alcohol containing up to 10 carbon atoms; and(d) a polyisocyanate, the reaction being carried out at a isocyanate index of 1.0 or greater.

Abstract: A staple coupling of the kind comprising interfitting male and female members for the connection of a hose within a fluid system, the members including respective external and internal circumferential grooves which register with one another when the members are fully engaged and holes on the female member to receive a staple, the holes being positioned and arranged so that when the staple is inserted into the holes the staple engages the registering grooves on the members to prevent separation of the members; a sealing O-ring provided on at least one of the members to provide a fluid tight seal between the members, and a generally U-shaped staple to prevent separation of the members; wherein at least one of the staple, the circumferential groove and the holes to receive the staple is shaped so as to allow limited axial movement of the male and female members in a separating direction to a locked position when the staple is fully inserted whereby the staple cannot be removed until the members are moved back to