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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.:

US 11148152 B1

PDFFull Text
Date of Patent:
Oct. 19, 2021

Filed:

Dec. 21, 2018

Pump changeover algorithm for spray system

Applicant:

Graco Minnesota Inc., Minneapolis, MN (US);

Inventors:

David L. Fehr, Champlin, MN (US);

John R. Ingebrand, New Prague, MN (US);

Jeffrey U. Shaffer, Minneapolis, MN (US);

Assignee:

Graco Minnesota Inc., Minneapolis, MN (US);

Attorney:

Kinney & Lange, P.A.

Primary Examiner:

Chee-Chong Lee

Int. Cl.
CPC ...
B05B 9/04 (2006.01); B05B 7/12 (2006.01); B05B 15/55 (2018.01); B05B 12/14 (2006.01); F04B 5/02 (2006.01); F04B 15/02 (2006.01); F16N 7/32 (2006.01); B29B 7/74 (2006.01); B05B 7/04 (2006.01); B05B 7/24 (2006.01); B05B 12/08 (2006.01); F04B 7/02 (2006.01); F04B 13/00 (2006.01); F04B 17/03 (2006.01); F04B 19/22 (2006.01); F04B 23/06 (2006.01); F04B 39/02 (2006.01); F04B 39/10 (2006.01); F04B 49/10 (2006.01); F04B 49/22 (2006.01); F04B 51/00 (2006.01); F04B 53/10 (2006.01); F04B 53/14 (2006.01); F04B 53/16 (2006.01);
U.S. Cl.
CPC ...
B05B 7/1254 (2013.01); B05B 7/04 (2013.01); B05B 7/24 (2013.01); B05B 9/0406 (2013.01); B05B 9/0413 (2013.01); B05B 12/087 (2013.01); B05B 12/149 (2013.01); B05B 12/1418 (2013.01); B05B 15/55 (2018.02); B29B 7/7447 (2013.01); F04B 5/02 (2013.01); F04B 7/02 (2013.01); F04B 13/00 (2013.01); F04B 15/02 (2013.01); F04B 17/03 (2013.01); F04B 19/22 (2013.01); F04B 23/06 (2013.01); F04B 39/0292 (2013.01); F04B 39/10 (2013.01); F04B 49/10 (2013.01); F04B 49/22 (2013.01); F04B 51/00 (2013.01); F04B 53/10 (2013.01); F04B 53/14 (2013.01); F04B 53/16 (2013.01); F16N 7/32 (2013.01); B05B 7/0408 (2013.01); B05B 7/2486 (2013.01); B05B 7/2497 (2013.01); B05B 9/04 (2013.01); F04B 2201/0601 (2013.01);
Abstract

A method of actuating a double-action pump assembly with a reciprocating plunger includes signaling the reciprocating plunger to stop for a changeover period; while the pump is stopping, signaling the first inlet and outlet valves to close; while the first inlet and outlet valves are closing, signaling the second inlet and outlet valves to open, such that the second inlet and outlet valves begin to mechanically open at least a dwell period after the first inlet and outlet valves have entirely closed; and signaling the reciprocating plunger to begin moving while the second inlet and outlet valves are closing.

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