An actuating mechanism for rapidly and selectively moving a threaded screw and nut member combination into or out of threaded engagement, particularly for use to pressurize angioplasty balloon catheters, or the like. The mechanism includes a housing and a threaded screw structure slidably displaceable...http://www.google.com.au/patents/US20020133116?utm_source=gb-gplus-sharePatent US20020133116 - Actuating mechanism for fluid displacement and pressurizing device
