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:
May. 24, 1994
Filed:
Jun. 22, 1992
Anthony K Lewis, St. Charles, MO (US);
Eugene E Weilbacher, Ellisville, MO (US);
Sherwood Medical Company, St. Louis, MO (US);
Abstract
A syringe assembly including a plunger rod and a plunger tip which are designed to provide a low frictional resistance against the interior surface of the syringe barrel while the plunger rod is at rest but which will increase the sealing pressure between the plunger tip and the interior surface of the syringe barrel in proportion to the amount of force applied to the plunger rod. Additionally, the plunger rod may be moved in the syringe barrel in a laterally offset manner with respect to the longitudinal axis of the syringe barrel without significantly affecting the seal between the plunger tip and the syringe barrel.