The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 22, 1986
Filed:
May. 21, 1984
Applicant:
Inventor:
Martyn S Abbott, Garland, TX (US);
Assignee:
Quest Medical, Inc., Carrollton, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
340605 ; 73269 ; 128D / ; 222 23 ; 222250 ; 340540 ; 340679 ; 604246 ;
Abstract
A method and apparatus for detecting leaking valves in a volumetric fluid delivery system. The system employs a volumetric chamber divided into two compartments by a moveable membrane, with each compartment having a valved inlet and a valved outlet. In the system, fluid is delivered in discrete increments by alternately opening an inlet and an outlet on opposite sides of the membrane. Between such delivery periods, all valves are closed, and then only a single valve is opened. The membrane is monitored to detect movement while the single valve is opened, indicating a closure failure in one of the supposedly closed valves.