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. 17, 2015
Filed:
Mar. 08, 2013
Nick E. Ciavarella, Seven Hills, OH (US);
Cory J. Tederous, Stow, OH (US);
John J. Mcnulty, Broadview Heights, OH (US);
Mark E. Rosenkranz, Medina, OH (US);
Nick E. Ciavarella, Seven Hills, OH (US);
Cory J. Tederous, Stow, OH (US);
John J. McNulty, Broadview Heights, OH (US);
Mark E. Rosenkranz, Medina, OH (US);
GOJO Industries, Inc., Akron, OH (US);
Abstract
Embodiments of lost motion foam pumps are disclosed herein. One exemplary embodiment includes a liquid chamber, a liquid piston movable in the liquid chamber, an air chamber and an air piston movable in the air chamber. The air piston is linked to the liquid piston. A connector is linked to the air piston or the liquid piston. The connector includes an engagement member for connecting to an actuator of a foam dispenser. Movement of the actuator in a first direction moves the liquid and air pistons to contract the liquid chamber and the air chamber. Movement of the actuator a first distance in a second direction does not move the liquid piston or the air piston; however, continued movement of the actuator a second distance in the second direction moves the liquid piston and the air piston and expands the liquid and air chambers.