US 9,038,656 B2
Restriction engaging systemGeneral
US 9,038,656 B2
Restriction engaging system
Tech Center:
3700 Mechanical Engineering, Manufacturing and Medical Devices/Processes
Examiner:
Kevin Lee
Art Unit:
3753 Fluid Handling and Dispensing
Agent:
Inventors:
David P. Gerrard; Yang Xu
Assignee:
Priority:
05/07/09
Filed:
12/30/11
Granted:
05/26/15
Expiration:
01/22/31
Abstract
A restriction engaging system includes, a restriction engager, one or more restrictions, and at least one counter configured to permit or prevent passage of a restriction engager through one of the one or more restrictions.
Cooperative Patent Classification (CPC)
F16F16K29/00F16KE21B33/1208E21BY10T137/86485Y10T