| 摘要 |
<p>An energy return formation for accommodation in a slot in the heel or sole of a sports shoe comprises a rigid upper plate (18) and a rigid lower plate (20) which are guided for relative vertical movements by depending locating pegs (22) spaced along opposite margins of the former sliding within upstanding tubular sockets (23) of the latter. A resilient energy-storing membrane (21) lies interposed between an array of downwardly-acting supports (17) of the upper plate (18) and a similar, but laterally offset, array of upwardly-acting supports (19) of the lower plate (20). The membrane (21) is so arranged to be stressed, and to yield resiliently, under forces transmitted to it by the upper and lower supports (17) and (19) when a downwards load is applied to the formation. The membrane is provided by a moulded rubber member which presents also upper and lower sockets (24) and (25) which accommodate the upper and lower supports (17) and (19), respectively. In alternative constructions, upper and lower supports are moulded integrally with a resilient membrane, or otherwise secured to the membrane.</p> |
