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:
Sep. 09, 2014
Filed:
Nov. 22, 2010
Brian Robert Law, Leicester, GB;
David John Pritchett, Ashby de la Zouch, GB;
Brian Robert Law, Leicester, GB;
David John Pritchett, Ashby de la Zouch, GB;
Rieke Corporation, Auburn, IN (US);
Abstract
A dispenser pump is disclosed of the moveable-nozzle type, arranged for sealing a vent path in the extended position of the pump plunger. A pump body includes an internal collar formed at the lower end of a tubular insert, through which the vent path passes. This collar has a seal portion. The plunger has a complementary seal portion which makes a guided and fitting engagement with the collar seal portion. One or both of the plunger seal portion and the collar seal portion is formed as an annular taper, so that the seal portions are guided into close engagement with one another. Plunger lock-down formations are constructed to engage at the bottom of the body insert and remain below the top opening of the body.