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.

Date of Patent:
Nov. 05, 2019

Filed:

Nov. 01, 2018
Applicant:

Op-hygiene Ip Gmbh, Niederbipp, CH;

Inventors:

Heiner Ophardt, Arisdorf, CH;

Andrew Jones, St. Anns, CA;

Zhenchun Shi, Hamilton, CA;

Assignee:

OP-Hygiene iP GmbH, Niederbipp, CH;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05B 11/00 (2006.01); F04B 53/14 (2006.01); F04B 53/10 (2006.01); F04B 23/02 (2006.01); F04B 19/22 (2006.01); B05B 15/55 (2018.01); A47K 5/14 (2006.01); A47K 5/12 (2006.01); F04B 19/06 (2006.01);
U.S. Cl.
CPC ...
B05B 11/3087 (2013.01); A47K 5/1211 (2013.01); A47K 5/14 (2013.01); B05B 11/3001 (2013.01); B05B 15/55 (2018.02); F04B 19/06 (2013.01); F04B 19/22 (2013.01); F04B 23/025 (2013.01); F04B 53/10 (2013.01); F04B 53/14 (2013.01);
Abstract

A method and apparatus for dispensing flowable fluids by dispensing the flowable fluid through a passageway leading to a discharge outlet in one stroke of a piston pump and, in a second opposite stroke of the piston pump, discharging air into the passageway to displace the fluid from the passageway through the outlet.


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