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:
Apr. 25, 2006
Filed:
May. 14, 2002
David C. Kamp, Grand Rapids, OH (US);
Raymond C. Lewis, Jr., Toledo, OH (US);
Richard D. Lohrman, Sylvania, OH (US);
Thomas P. Royce, Swanton, OH (US);
Gennaro R. Martire, Perrysburg, OH (US);
David C. Kamp, Grand Rapids, OH (US);
Raymond C. Lewis, Jr., Toledo, OH (US);
Richard D. Lohrman, Sylvania, OH (US);
Thomas P. Royce, Swanton, OH (US);
Gennaro R. Martire, Perrysburg, OH (US);
Continentalafa Dispensing Company, St. Peters, MO (US);
Abstract
A pump dispenser for liquid products includes a pump chamber having a cylinder, and a piston slidable within the cylinder with an outlet passage extending through the piston. A spring within the chamber urges the piston to an extended position. An inlet opening is disposed at an end of the chamber for receiving product to be dispensed. An inlet check valve is positioned at the inlet opening to permit entry of product into the chamber as the piston is extended by the spring, but to prevent exit of product from the chamber through the inlet opening as the piston is depressed against the spring. An outlet check valve is carried by the piston within the outlet passage to permit discharge of product from the chamber through the outlet passage as the piston is depressed against the spring. The outlet valve includes a concave valve body of flexible resilient construction opening away from the chamber and having an external periphery in radial surface-to-surface resilient sealing contact with an opposing radially inwardly facing wall surface of the outlet passage.