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:
Oct. 11, 1994
Filed:
Oct. 13, 1993
Applicant:
Inventor:
Mark A Balderrama, Colton, CA (US);
Assignee:
Calmar Inc., City of Industry, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B67D / ;
U.S. Cl.
CPC ...
222321 ; 22240219 ; 222375 ;
Abstract
A liquid dispensing pump capable of inverted spray has a container vent including a spiral vent groove of a length restricting the free flow of liquid therethrough to avoid leakage, and being sized so that while dispensing in the inverted position the rate of liquid discharge from the container is greater than the flow of air through the vent groove which thereby creates a vacuum in the container and effects a suck-back of air through the vent into the container for venting.