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:
Feb. 18, 2020
Filed:
Oct. 07, 2014
Sio2 Medical Products, Inc., Auburn, AL (US);
Jean-Pierre Giraud, Auburn, AL (US);
Bernard Sol, Maisons-Alfort, FR;
Robert J. Pangborn, Harbor Springs, MI (US);
Robert S. Abrams, Albany, NY (US);
Joseph W. Rogers, Lafayette Hill, PA (US);
Peter J. Sagona, Pottstown, PA (US);
Michael J. Mims, Auburn, AL (US);
SIO2 MEDICAL PRODUCTS, INC., Auburn, AL (US);
Abstract
A convertible plunger is provided comprising an internal portion and a generally cylindrical exterior surface. At least a portion of the exterior surface is maintained in an initial expanded state by a property of the internal portion. The expanded state is reducible to a constricted state by an operation that is applied to the internal portion of the plunger to alter the property. A film coating may also be applied to a sidewall of the sleeve to reduce a sliding friction between the sleeve and barrel. A film coating may also be applied to a nose cone of the plunger to provide a barrier between the plunger and product in the barrel.