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:
Dec. 12, 2017
Filed:
Dec. 31, 2014
Westrock Mwv, Llc, Richmond, VA (US);
Eelco H. DeMan, Vlijmen, NL;
Silgan Dispensing Systems Corporation, Grandview, MO (US);
Abstract
A dispensing pump () for liquids, viscous materials, foams, gels, etc. includes a resilient cup spring () so that the entire pump can be more easily recycled. The dispensing pump () includes a base portion (), an inlet valve (), a piston valve (), a cup spring (), a spring guide structure () and a pump actuator (). When actuated, the cup spring () is elastically deformed over opposing spring ribs (), and then upon release, the cup () elastically returns to its normal at rest shape, returning the guide () and pump actuator () to their normal at rest positions. The cup spring () includes structures which interact with the piston valve () to open the outlet valve.