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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 10731791 B1

PDFFull Text
Date of Patent:
Aug. 04, 2020

Filed:

Apr. 22, 2016

Centerfill of lubricant reservoir

Applicant:

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

Inventors:

John C. Holman, Ham Lake, MN (US);

Benjamin J. Paar, Minneapolis, MN (US);

Mike V. Atkinson, Eden Prarie, MN (US);

Brandon T. Gustafson, Deephaven, MN (US);

Assignee:

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

Attorney:

Kinney & Lange, P.A.

Primary Examiner:

Michael R Mansen

Assistant Examiner:

Mark K Buse

Int. Cl.
CPC ...
F16N 13/22 (2006.01); F16N 11/08 (2006.01); F16N 39/00 (2006.01); F16K 31/18 (2006.01); F04B 53/12 (2006.01); F16N 7/38 (2006.01); F16N 19/00 (2006.01); F04B 49/04 (2006.01); F04B 53/06 (2006.01); F04B 53/16 (2006.01); F04B 23/02 (2006.01); F16N 13/02 (2006.01); F16N 37/00 (2006.01); F16N 21/00 (2006.01); F16K 31/24 (2006.01); F16K 21/18 (2006.01); F16K 31/22 (2006.01); F16K 37/00 (2006.01); F16N 13/00 (2006.01); F16N 29/00 (2006.01);
U.S. Cl.
CPC ...
F16N 13/22 (2013.01); F04B 23/025 (2013.01); F04B 49/04 (2013.01); F04B 53/06 (2013.01); F04B 53/12 (2013.01); F04B 53/126 (2013.01); F04B 53/16 (2013.01); F16K 21/18 (2013.01); F16K 31/18 (2013.01); F16K 31/22 (2013.01); F16K 31/24 (2013.01); F16K 37/0008 (2013.01); F16N 7/385 (2013.01); F16N 11/08 (2013.01); F16N 13/02 (2013.01); F16N 19/00 (2013.01); F16N 19/003 (2013.01); F16N 19/006 (2013.01); F16N 21/00 (2013.01); F16N 37/00 (2013.01); F16N 39/002 (2013.01); F16N 7/38 (2013.01); F16N 13/00 (2013.01); F16N 29/00 (2013.01); F16N 2037/006 (2013.01); F16N 2250/18 (2013.01); F16N 2260/20 (2013.01); F16N 2270/14 (2013.01); F16N 2270/20 (2013.01); F16N 2280/04 (2013.01);
Abstract

A centerfill assembly for a lubricant reservoir includes a hollow tube for receiving lubricant from the top of the reservoir and loading the lubricant into the reservoir near the bottom of the reservoir. Loading the lubricant near the bottom of the reservoir introduces lubricant near where the stirring paddles mix the lubricant and near where the lubricant is loaded to the lubricant pump. Adding the lubricant near where the pumps load and near the stirring paddles helps to eliminate air pockets in the lubricant. In addition, having the centerfill rod minimizes exterior plumbing and allows for the mounting of valves on the fill line.

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