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:
Oct. 19, 1993
Filed:
Aug. 03, 1992
William T Wilkinson, Crownsville, MD (US);
John J Nelson, Levitown, PA (US);
Package Research Corporation, Cleveland, OH (US);
Abstract
A dispenser for a fluid substance, such as toothpaste, includes an elongated tube having an open top and an open bottom with a chamber therebetween for holding the substance. A bottom closure is mounted to the open bottom to close the open bottom. The bottom closure is longitudinally movable in a sealing manner in the open bottom to press against the substance and to move into the chamber as the substance is being dispensed. A flexible membrane sealing closes the open top of the tube. A nozzle extends through the membrane having a longitudinal passageway communicating with the chamber for dispensing the substance when the nozzle is moved to a dispensing orientation. The membrane is made of a stretchable resilient material so that the nozzle may be titled to the dispensing orientation and thereby stretch the membrane and force the membrane into the chamber to reduce the size of the chamber and cause a portion of the substance to flow through the nozzle.