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:
Nov. 03, 1998
Filed:
Sep. 06, 1996
Donald E Hershey, Cincinnati, OH (US);
Eric R Bartsch, Cincinnati, OH (US);
The Procter & Gamble Company, Cincinnati, OH (US);
Abstract
A dispensing pump including an actuator coupled to a resilient bellow, wherein the bellow is in fluid communication with the contents of a container via an inlet valve. Expansion of the bellow, caused by the resilience of the bellow, creates negative pressure causing the contents of the container to be drawn through the inlet valve and into a space defined by the bellow. The dispensing pump also includes an outlet valve in fluid communication with the bellow such that compression of the bellow caused by the application of pressure to the actuator creates positive pressure within the bellow causing the contents held within the bellow to be forced through the outlet valve and out of an outlet of the dispensing pump.