Ronald R Brestel

US Patent:

7484710, Feb 3, 2009

Filed:

Feb 28, 2005

Appl. No.:

11/068946

Inventors:

David John Koester - Gladbrook IA, US
Sarah Lynn Dvorak - Ames IA, US
Lynn Dean Mahncke - Marshalltown IA, US
Brandon Wayne Bell - Marshalltown IA, US
Ronald R. Brestel - Marshalltown IA, US

Assignee:

Fisher Controls International LLC - St. Louis MO

International Classification:

F16K 5/08

US Classification:

251160, 251172, 251192, 251298, 25131507

Abstract:

A control valve of the ball type with bi-directional shutoff capabilities is disclosed. The ball valve including an inlet and an outlet, a ball element and a seal assembly. When closing the valve, the ball element, which is eccentrically mounted on a shaft, rotates to abut the seal assembly. While closed, the seal assembly including a seal housing, a main seal and a resilient member, contacts the ball element at the main seal, while the resilient member biases the main seal toward the ball element. The seal assembly further includes a secondary flowpath between the main seal and seal housing, which is restricted by a high temperature seal.

US Patent:

7955021, Jun 7, 2011

Filed:

Oct 31, 2008

Appl. No.:

12/262983

Inventors:

Ronald Ray Brestel - Marshalltown IA, US
Benjamin Uriah Good - Marshalltown IA, US

Assignee:

Fisher Controls International, LLC - Marshalltown IA

International Classification:

F16K 31/00

US Classification:

403371, 251292, 251304

Abstract:

Collets for coupling rotary actuators to valves are disclosed. An example shaft coupling assembly includes an elongated member having a first end and a second end, in which the first end includes a coupling portion having a first opening configured to receive a rectangular shaft. The coupling portion includes at least one flexible member having an arcuate outer surface and a first inner surface adjacent a second inner surface that at least partially define the first opening. At least a portion of the first inner surface is to engage a first side of the rectangular shaft and at least a portion of the second inner surface is to engage a second side of the rectangular shaft. The shaft coupling assembly further includes a sleeve having a second opening to receive the elongated member and a tapered third opening configured to receive the coupling portion.

US Patent:

8235065, Aug 7, 2012

Filed:

Dec 18, 2009

Appl. No.:

12/642038

Inventors:

Ronald R. Brestel - Marshalltown IA, US

Assignee:

Fisher Controls International LLC - Marshalltown IA

International Classification:

F16K 41/02

US Classification:

137 1518, 137312, 251214

Abstract:

A control valve includes a valve body, a valve stem, and a control element. The valve body receives the stem and includes a packing box housing a packing set. A packing follower includes a bore sized to receive the stem and includes an upper portion, a lower portion, and a bearing surface, the lower portion sized to extend into the valve bonnet to engage the packing set to apply a first compressive force to the packing set, the upper portion including threads and having an upper counterbore housing a secondary seal ring. A nut operatively engages the threads of the upper portion of the packing follower, the nut positioned to apply a second compressive force to the secondary seal ring, and a spring is positioned between the packing flange and the bearing surface of the packing follower, wherein the first compressive force is independent of the second compressive force.

US Patent:

8281797, Oct 9, 2012

Filed:

Dec 18, 2009

Appl. No.:

12/642038

Inventors:

Ronald R. Brestel - Marshalltown IA, US

Assignee:

Fisher Controls International LLC - Marshalltown IA

International Classification:

F16K 41/02

US Classification:

137 1518, 137312, 251214

Abstract:

A control valve includes a valve body, a valve stem, and a control element. The valve body receives the stem and includes a packing box housing a packing set. A packing follower includes a bore sized to receive the stem and includes an upper portion, a lower portion, and a bearing surface, the lower portion sized to extend into the valve bonnet to engage the packing set to apply a first compressive force to the packing set, the upper portion including threads and having an upper counterbore housing a secondary seal ring. A nut operatively engages the threads of the upper portion of the packing follower, the nut positioned to apply a second compressive force to the secondary seal ring, and a spring is positioned between the packing flange and the bearing surface of the packing follower, wherein the first compressive force is independent of the second compressive force.

US Patent:

20120217426, Aug 30, 2012

Filed:

Feb 24, 2011

Appl. No.:

13/034388

Inventors:

Andrew James Berthelsen - Marshalltown IA, US
Charles Robert Kuhlman - Marshalltown IA, US
Ronald Ray Brestel - Marshalltown IA, US

International Classification:

F16K 5/06

US Classification:

251309, 25131501

Abstract:

Valve apparatus having a double-offset shaft connection are described herein. An example flow control member includes a sealing surface to move relative to a seal where the flow control member has a first axis and a second axis substantially perpendicular to the first axis and the first and second axes intersect a center of curvature of the sealing surface. The flow control member also includes an opening to receive a shaft where the opening has a third axis passing through the opening to define a pivot about which the sealing surface rotates. The third axis is offset from the first and second axes.

US Patent:

55931669, Jan 14, 1997

Filed:

Mar 2, 1994

Appl. No.:

8/204637

Inventors:

Michel K. Lovell - Marshalltown IA
Randall S. Jackson - Marshalltown IA
Ronald R. Brestel - Marshalltown IA

Assignee:

Fisher Controls International, Inc. - Clayton MO

International Classification:

F16J 1520

US Classification:

277 59

Abstract:

A two-part, low friction, live loaded packing system for fire safety and low fugitive emission sealing (less than 500 ppm) of a valve stem at operating temperatures up to 450. degree. F. (232. degree. C. ). One lower packing ring set around the valve stem has PTFE washers sandwiched between flexible graphite rings to provide fire safety and low friction. An upper packing ring set around the valve stem is closer to the loading source and has V-type PTFE rings to provide reliable low fugitive emission sealing and low friction. The live loading is optimized to maintain a seal at the upper packing set to less than 500 ppm leakage, minimize packing friction from both the upper and lower packing sets, and seal the lower packing set during fire safety tests.

US Patent:

52998126, Apr 5, 1994

Filed:

Dec 15, 1992

Appl. No.:

7/991086

Inventors:

Ronald R. Brestel - Marshalltown IA
Ronnald J. Funk - Marshalltown IA
William C. Scheffert - Marshalltown IA
Wilbur D. Hutchens - Marshalltown IA
Virgil W. Pepper - Marshalltown IA
Frank E. Jensen - Marshalltown IA

Assignee:

Fisher Controls International, Inc. - Clayton MO

International Classification:

F16J 1530

US Classification:

277125

Abstract:

A fluid valve graphite packing assembly with graphite packing rings and thin PTFE disc rings surrounding an operating valve member. Softer graphite packing rings on the interior are bounded by progressively harder graphite packing rings. A PTFE disc ring is inserted between the graphite packing rings. The packing is subjected to sufficient packing stress to cause the PTFE disc rings to extrude onto the operating valve member. A laminated packing ring formed of alternating sheets of flexible graphite and PTFE which is die cut to provide a crown shaped cross-section aiding in enabling PTFE extrusion to enhance valve operating member lubrication and sealing.

US Patent:

45195790, May 28, 1985

Filed:

Feb 14, 1983

Appl. No.:

6/466186

Inventors:

Ronald R. Brestel - Marshalltown IA
Dale L. Meyer - Marshalltown IA

Assignee:

Fisher Controls, International, Inc. - Marshalltown IA

International Classification:

F16K 2500

US Classification:

251172

Abstract:

A fluid valve capable of operation in high pressure, bidirectional flowpaths includes a chamber having a circular port in which an axially and radially movable seat ring is engaged by an eccentrically movable valve plug having a spherically convex sealing surface. The plug is mounted to a valve shaft supported in the body for rotation about an axis transverse to, but offset from, the centerline of the port. The seat ring, body and a retainer ring include among them a pair of annular channels for retaining a pair of seals adapted for improving their sealing action with pressure.