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:
Aug. 12, 2003
Filed:
Oct. 07, 2002
Mark E. Williamson, Wonder Lake, IL (US);
Scott R. Ariagno, Mundelein, IL (US);
Alan W. Marttila, Waukegan, IL (US);
Arnold C. Bilstad, Deerfield, IL (US);
Paul M. DiPerna, San Clemente, CA (US);
Michael R. Prisco, Geneva, IL (US);
David W. Pennington, Fox Lake, IL (US);
Atif M. Yardimci, Northbrook, IL (US);
Sidney T. Smith, Lake Forest, IL (US);
Mark C. Perry, McHenry, IL (US);
Marc Bellotti, Libertyville, IL (US);
Baxter International Inc., Deerfield, IL (US);
Abstract
A vacuum demand valve for delivering a flowable material is disclosed. The valve has a housing having a proximal end, a distal end, an intermediate segment therebetween defining a passageway wherein the flowable substance can flow from the proximal end to the distal end. The housing can be a tubing. A valve member is located along the intermediate segment. The valve member has a closed condition wherein the flow of the flowable material from the proximal end to the distal end is stopped and an open condition wherein the flow of the flowable material from the proximal end to the distal end is unstopped. The valve member is biased in the closed condition and is responsive to a partial vacuum provided by the user through the passageway for placing the valve member in the open condition.