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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 10774988 B1

PDFFull Text
Date of Patent:
Sep. 15, 2020

Filed:

Apr. 22, 2016

Vent valve

Applicant:

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

Inventors:

John C. Holman, Ham Lake, 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); F16K 31/18 (2006.01); F16N 7/38 (2006.01); F16N 11/08 (2006.01); F16N 39/00 (2006.01); F04B 53/12 (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); F16K 31/24 (2006.01); F16N 13/02 (2006.01); F16K 21/18 (2006.01); F16N 37/00 (2006.01); F16K 31/22 (2006.01); F16K 37/00 (2006.01); F16N 21/00 (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 vent valve for an actuator disposed in a lubricant reservoir includes a bore extending through the plate, a seal disposed within the bore proximate a top surface of the plate, a retaining member extending about a lower opening of the bore, and a ball disposed within the bore between the seal and the retaining member. The vent valve is configured to allow air to pass from a lower portion of a lubricant reservoir as lubricant fills the lower portion. The vent valve also allows air to pass to the lower portion of the lubricant reservoir as lubricant is dispensed from the reservoir. The vent valve closes when the lubricant level reaches the vent valve, thereby preventing lubricant from flowing through the vent valve. The sealed vent valve allows the actuator to rise in response to a rising lubricant level.

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