| 摘要 |
A modality construction comprising a pad having a core formed of yieldable material enclosed within an envelope or cover to one side of which is secured a pair of parallel, spaced apart, elastic mounting straps to enable the pad to be secured to any desired portion of a person's body. Between the mounting straps, and parallel thereto, is secured a non-elastic force transmitting strap having means at its opposite ends for connection to an anchor device which may be secured directly to an immovable object or, if preferred, secured to the immovable object through the intermediary of a spring.
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