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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 9920879 B1

PDFFull Text
Date of Patent:
Mar. 20, 2018

Filed:

Aug. 07, 2014

Lubricant reservoir low level indicator

Applicant:

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

Inventors:

Andrew J. Klaphake, Minneapolis, MN (US);

Jeffrey Kidman, Savage, MN (US);

Suresha S. Nijaguna, Plymouth, MN (US);

Assignee:

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

Attorney:

Kinney & Lange, P.A.

Primary Examiner:

Michael A Riegelman

Int. Cl.
CPC ...
F16N 19/00 (2006.01); F16N 37/00 (2006.01); F04B 49/06 (2006.01); F04B 53/18 (2006.01); F04B 17/03 (2006.01); F16N 31/02 (2006.01); F01M 1/02 (2006.01); F01M 11/00 (2006.01); F04B 19/22 (2006.01); F04C 2/08 (2006.01); F04C 14/00 (2006.01); F04C 15/00 (2006.01); F16N 7/40 (2006.01); F16N 21/00 (2006.01); F16N 29/00 (2006.01); F16N 13/00 (2006.01); G01F 23/22 (2006.01); G01F 23/40 (2006.01); F16N 13/06 (2006.01); F16N 29/02 (2006.01);
U.S. Cl.
CPC ...
F16N 37/00 (2013.01); F01M 1/02 (2013.01); F01M 11/0004 (2013.01); F04B 17/03 (2013.01); F04B 19/22 (2013.01); F04B 49/06 (2013.01); F04B 49/065 (2013.01); F04B 53/18 (2013.01); F04C 2/08 (2013.01); F04C 14/00 (2013.01); F04C 15/008 (2013.01); F16N 7/40 (2013.01); F16N 13/00 (2013.01); F16N 13/06 (2013.01); F16N 19/003 (2013.01); F16N 21/00 (2013.01); F16N 29/00 (2013.01); F16N 29/02 (2013.01); F16N 31/02 (2013.01); G01F 23/22 (2013.01); G01F 23/40 (2013.01); F01M 2001/023 (2013.01); F01M 2001/0215 (2013.01); F01M 2001/0238 (2013.01); F01M 2001/0253 (2013.01); F04B 2203/0201 (2013.01); F16N 19/00 (2013.01); F16N 2013/063 (2013.01); F16N 2037/006 (2013.01); F16N 2250/00 (2013.01);
Abstract

A lubrication system comprises a lubricant reservoir, a motorized pump, a follower plate, a stationary rod, a movable sleeve, and a flexible connection. The motorized pump is disposed to pump fluid from the lubricant reservoir to lubricant work lines. The follower plate is situated within the lubricant reservoir. The stationary rod has a colored indicator portion. The movable sleeve disposed concentrically about the stationary rod. The flexible connection extends between the follower plate and the stationary colored rod, such that the flexible connection pulls the movable sleeve away from the stationary rod to reveal the colored indicator portion as the follower plate drops towards a bottom of the lubricant reservoir.

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