| 摘要 |
<p>MOTION RETARDER A motion retarder particularly useful for regulating rotary movement of a shaft, for example, includes an inner and outer tension unit carried on a bolt shaped rod. Arcurate end segments of a pressure member of each unit are positioned in an opposing manner to define a pair of shaft holding spaces. A spring carried on the rod between the inner unit and a head portion of the rod may be advanced through a threaded connection between an end of the rod and a lock-type nut forming part of the outer unit. This advancement compresses the spring to force an inner friction surface of the unit pressure member end segments into engagement with an outer surface of a shaft positioned in the respective holding spaces. This engagement selectively inhibits inadvertent shaft movement to maintain the position of the shaft until shaft movement is desired.</p> |
