06007403 is referenced by 23 patents and cites 26 patents.

A fluid flow prevention device to be used with flexible conduits, and more particularly with toy balloons. The device is made of a resilient material and has a centrally and axially located normally closed slit through which a ring of a balloon's mouth may be inserted when the slit is forced open, whereby a neck of the balloon is maintained within the slit as the slit closes. After inflation of the balloon's body, the body and the ring are rotated in opposite directions, whereby the neck of the balloon is caused to twist. The resilient material of the device maintains closure of the slit whereby the wall defining the slit maintains the neck in its twisted position and prevents egress of fluid. In addition, the contractile force of the twisted neck draw the ring and the body of the balloon into frictional contact with the top and bottom surfaces of the device and further prevents untwisting of the neck and further prevents egress of fluid.

Title
Flexible constrictor for inflatable bodies
Application Number
8/972125
Publication Number
6007403
Application Date
November 17, 1997
Publication Date
December 28, 1999
Inventor
John R Urspringer
4942 Paseo Montelena, Camarillo, 93012
CA, US
Steven E Urspringer
1894 Roland Ave., Camarillo, 93010
CA, US
Agent
W D English
IPC
B65D 77/10
A63H 3/06
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