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Class 417/456 - Relatively movable serial distributors


Subclass of Class 417 - Pumps
Definition: Apparatus including two or more distributors through which
No. of applications: 2
Last issue date: 08/26/2010


Application No.Application TitleIssue Date
20100215528Double standing valve sucker rod pump
A sucker rod pump with no travelling valve consisting of, from the bottom: hold down with pump inlet, lower standing valve, hollow coupling, upper standing valve suspended within the coupling, relief valve, hollow pump housing, solid piston within the housing, and barre... 		08/26/2010
20070073236Dispensing fluid from an infusion pump system
Some embodiments of a medical infusion pump system include a pump device having a flexible pushrod that can adjust from a curved configuration to a generally straight configuration. The flexible pushrod is part of a drive system of the pump device so that the flexible p... 		03/29/2007
 
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