Chris W Sydow

US Patent:

53637399, Nov 15, 1994

Filed:

Oct 12, 1993

Appl. No.:

8/134052

Inventors:

Chris W. Sydow - Champlin MN

Assignee:

Graco Inc. - Minneapolis MN

International Classification:

F01L 3102
F16K 3144

US Classification:

91346

Abstract:

An external air valve for a reciprocating air motor is provided with a the ability to transfer heat from incoming compressed air into the valve cups to prevent icing and a low friction mechanism for the valve slide to enhance reliability. The design has a housing which forms an air chamber, and located in the air chamber is a slide member containing two cups which alternately cover ports leading to the upper and lower chambers of the air motor piston. The slide has slotted rollers to reduce pneumatic loading and decrease friction during sliding. The shift rod is provided with a central valve spring located in an aperture in the slide, along with spring retaining plates to provide and assist in shifting the valve in conjunction with a detent to assure that the valve is positioned in one of two operating positions. The pressurized chamber, in conjunction with fins, apertures and other heat transfer apparatus in the slide assures that heat is applied to the cups of the slide in order to prevent icing.

US Patent:

20220341417, Oct 27, 2022

Filed:

Jul 11, 2022

Appl. No.:

17/861864

Inventors:

- Minneapolis MN, US
Christopher A. Lins - Waverly MN, US
Andrew J. Kopel - Stanchfield MN, US
Glen W. Davidson - Roseville MN, US
Chad R. Taszarek - Albertville MN, US
Chris W. Sydow - Becker MN, US
William M. Blenkush - Becker MN, US
Steve J. Wrobel - Roger MN, US

International Classification:

F04B 53/14
F04B 53/22
F04B 19/22
F04B 53/16
F15B 15/14

Abstract:

A pump rod has a head extending from a neck, and the head is received within a drive slot of a drive link. The head includes a projection, and has an area smaller than an area of the head. The projection contacts an inner surface of the drive slot. The drive link may include a projection aligned with a centerline of the drive link. The drive link projection contacts a head of the pump rod. The projections provide a reduced contact area between the pump rod and the drive link, thereby reducing any side-loading on the pump rod and increasing a lifespan of the wear parts.

US Patent:

20220213891, Jul 7, 2022

Filed:

Mar 7, 2022

Appl. No.:

17/688360

Inventors:

- Minneapolis MN, US
Christopher A. Lins - Waverly MN, US
Andrew J. Kopel - Stanchfield MN, US
Glen W. Davidson - Roseville MN, US
Chad R. Taszarek - Albertville MN, US
Chris W. Sydow - Becker MN, US
William M. Blenkush - Becker MN, US
Steve J. Wrobel - Roger MN, US

International Classification:

F04B 53/14
F04B 53/22
F04B 19/22
F04B 53/16
F15B 15/14

Abstract:

A pump rod has a head extending from a neck, and the head is received within a drive slot of a drive link. The head includes a projection, and has an area smaller than an area of the head. The projection contacts an inner surface of the drive slot. The drive link may include a projection aligned with a centerline of the drive link. The drive link projection contacts a head of the pump rod. The projections provide a reduced contact area between the pump rod and the drive link, thereby reducing any side-loading on the pump rod and increasing a lifespan of the wear parts.

US Patent:

20230082554, Mar 16, 2023

Filed:

Nov 17, 2022

Appl. No.:

17/989250

Inventors:

- Minneapolis MN, US
Christopher A. Lins - Waverly MN, US
Andrew J. Kopel - Stanchfield MN, US
Glen W. Davidson - Roseville MN, US
Chad R. Taszarek - Albertville MN, US
Chris W. Sydow - Becker MN, US
William M. Blenkush - Becker MN, US
Steve J. Wrobel - Rogers MN, US

International Classification:

F04B 53/14
F04B 53/22
F04B 19/22
F04B 53/16
F15B 15/14

Abstract:

A pump rod has a head extending from a neck, and the head is received within a drive slot of a drive link. The head includes a projection, and has an area smaller than an area of the head. The projection contacts an inner surface of the drive slot. The drive link may include a projection aligned with a centerline of the drive link. The drive link projection contacts a head of the pump rod. The projections provide a reduced contact area between the pump rod and the drive link, thereby reducing any side-loading on the pump rod and increasing a lifespan of the wear parts.

US Patent:

20210277890, Sep 9, 2021

Filed:

May 20, 2021

Appl. No.:

17/325684

Inventors:

- Minneapolis MN, US
Christopher A. Lins - Waverly MN, US
Andrew J. Kopel - Stanchfield MN, US
Glen W. Davidson - Roseville MN, US
Chad R. Taszarek - Albertville MN, US
Chris W. Sydow - Becker MN, US
William M. Blenkush - Becker MN, US
Steve J. Wrobel - Roger MN, US

International Classification:

F04B 53/14
F04B 53/22
F04B 19/22
F04B 53/16
F15B 15/14

Abstract:

A pump rod has a head extending from a neck, and the head is received within a drive slot of a drive link. The head includes a projection, and has an area smaller than an area of the head. The projection contacts an inner surface of the drive slot. The drive link may include a projection aligned with a centerline of the drive link. The drive link projection contacts a head of the pump rod. The projections provide a reduced contact area between the pump rod and the drive link, thereby reducing any side-loading on the pump rod and increasing a lifespan of the wear parts.

US Patent:

20200102951, Apr 2, 2020

Filed:

Nov 26, 2019

Appl. No.:

16/696255

Inventors:

- Minneapolis MN, US
Christopher A. Lins - Waverly MN, US
Andrew J. Kopel - Stanchfield MN, US
Glen W. Davidson - Roseville MN, US
Chad R. Taszarek - Albertville MN, US
Chris W. Sydow - Becker MN, US
William M. Blenkush - Becker MN, US
Steve J. Wrobel - Roger MN, US

International Classification:

F04B 53/14
F04B 53/22
F04B 19/22
F04B 53/16
F15B 15/14

Abstract:

A pump rod has a head extending from a neck, and the head is received within a drive slot of a drive link. The head includes a projection, and has an area smaller than an area of the head. The projection contacts an inner surface of the drive slot. The drive link may include a projection aligned with a centerline of the drive link. The drive link projection contacts a head of the pump rod. The projections provide a reduced contact area between the pump rod and the drive link, thereby reducing any side-loading on the pump rod and increasing a lifespan of the wear parts.

US Patent:

20160186743, Jun 30, 2016

Filed:

Dec 30, 2015

Appl. No.:

14/984212

Inventors:

- Minneapolis MN, US
Christopher A. Lins - Waverly MN, US
Andrew J. Kopel - Stanchfield MN, US
Glen W. Davidson - Roseville MN, US
Chad R. Taszarek - Albertville MN, US
Chris W. Sydow - Becker MN, US
William M. Blenkush - Becker MN, US
Steve J. Wrobel - Rogers MN, US

International Classification:

F04B 53/14
F04B 53/16
F04B 9/04

Abstract:

A pump rod has a head extending from a neck, and the head is received within a drive slot of a drive link. The head includes a projection, and has an area smaller than an area of the head. The projection contacts an inner surface of the drive slot. The drive link may include a projection aligned with a centerline of the drive link. The drive link projection contacts a head of the pump rod. The projections provide a reduced contact area between the pump rod and the drive link, thereby reducing any side-loading on the pump rod and increasing a lifespan of the wear parts.

US Patent:

20160186744, Jun 30, 2016

Filed:

Dec 30, 2015

Appl. No.:

14/984430

Inventors:

- Minneapolis MN, US
Steve J. Wrobel - Rogers MN, US
Chad R. Taszarek - Albertville MN, US
William M. Blenkush - Becker MN, US
Chris W. Sydow - Becker MN, US
Christopher A. Lins - Crystal MN, US
Andrew J. Kopel - Stanchfield MN, US
David J. Thompson - Oak Grove MN, US

International Classification:

F04B 53/16
F04B 19/22

Abstract:

A displacement pump includes a pump rod having a load concentrating feature extending from the head of the pump rod. The head of the pump rod is received within a slot of a drive link, and the drive link is configured to contact the load concentrating feature. Having the drive link contact the smaller diameter load concentrating feature reduces the misalignment between the driving force and the center of the pump rod and thereby reduces side-loading experienced by the pump rod. The displacement pump is configured to be used in a fluid dispensing system.