Scott Bradley,Jeff Fields,Chase Parish,Tyler Butel
申请号：
US13836196
公开号：
US09016608B2
申请日:
2013.03.15
申请国别(地区):
US
年份:
2015
代理人:
摘要：
A locking retractor is disclosed, as are stretchers and cots using the retractor to secure a patient. The retractor includes structure for locking the retractor spool to prevent rotation in both directions. However, a cam is coupled to the shaft and is arranged relative to the locking structure to prevent the spool from locking during an initial portion of the spools rotation, until a first locking point is reached. Once the first locking point has been reached, a clutch prevents the locking structure from engaging while the spool is still rotating, but the locking structure will engage to lock the spool in both directions once active rotation stops. A user-actuatable lever is provided externally that disengages the locking structure when actuated to allow the spool to extend and retract freely.
