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. 18, 1997
Filed:
Nov. 03, 1995
Applicant:
Inventor:
Richard J Smolen, Jr, Woodstock, IL (US);
Assignee:
Owens-Illinois Closure Inc., Toledo, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B67B / ;
U.S. Cl.
CPC ...
222-1 ; 222375 ; 2223831 ; 222571 ; 239333 ;
Abstract
A tulip-type check valve is housed in a cylindrical chamber, the length of which is greater than the check valve itself so that during the pressure stroke of the pump, the valve moves forward in its chamber and flexes to permit flow about its periphery. During the suction stroke, the valve closes and is drawn backward upstream in its chamber and there is a sucking back of liquid between the check valve and the orifice to obviate nozzle the drip.