HANS D BAUMANN
Engineering in Rye, NH

6766826, Jul 27, 2004

Apr 12, 2002

10/121423

Hans D. Baumann - Rye NH

Fisher Controls International, Inc. - Marshalltown IA

F16K 4708

1376253, 13762539

A fluid control valve includes a valve body having a fluid passageway, a cage mounted in the fluid passageway, the cage including a wall defining a cage bore having an axis, and a valve plug assembly including a valve plug that is axially slidable in the cage bore. The cage defines one or more windows and a valve seat. Each of the one or more windows includes a plurality of slots each having a longitudinal axis. The longitudinal axis of each of the slots is parallel to or tilted at a relatively small angle with respect to a reference plane that is perpendicular to the cage bore axis. The longitudinal axes of the slots are preferably oriented at an angle of about 0° to 15° with respect to the reference plane.

6076799, Jun 20, 2000

Feb 19, 1998

9/026254

Hans D. Baumann - Rye NH

Fisher Controls International, Inc. - Clayton MO

F16K 31143

251 62

A rotary valve actuator and linkage include an actuator having a tubular housing with end caps and a piston that is moved by fluid pressure against a compression spring. A rolling diaphragm is used to bias the piston. A pair of ports are provided on opposite sides of the housing, and a linkage having two arms is interconnected with the piston through the ports. The linkage is coupled to a rotary valve shaft and linear movement of the piston causes rotational movement of the shaft. The linkage includes two separate arms and a centerpiece. In one embodiment, the arms and the centerpiece interengage each other at angled surfaces that force the centerpiece and the arms into radial engagement with the shaft when axial compression is provided to the arms and centerpiece to force them toward each other. In another embodiment, each of the linkage arms is provided with a collet having radially movable portions. The collet is forced into a recess in the centerpiece, causing the radially movable portions to be locked in engagement with the shaft.

5718410, Feb 17, 1998

Oct 20, 1995

8/546533

Hans D. Baumann - Rye NH

F16K 5100

251 615

A small flow control valve with cartridge type seating arrangement is shown and described. A conventional valve housing with inlet and outlet ports and a seat ring cartridge. A plug with a lower throttling profile engages within the seat ring bore. A deformable seal is provided and is capable of being deformed by a metal collar radially inwardly to compress the exterior of the upper contoured plug portion to prevent leakage in the closed valve position. The collar is held in constant compression by a circular spring placed between the collar and a groove located within a bore of the cartridge. The valve further has an actuating device adjustably attached thereto.

4577873, Mar 25, 1986

Mar 29, 1985

6/717834

Hans D. Baumann - Rye NH

F16J 1524

277110

Valve packing comprising one lower, adjustable, compressible, solid ring set followed by an upper, non-adjustable, pre-compressed, flexible, plastic v-ring set; both packing sets inter-spaced by a slidable gland having an additional outer elastomeric seal, said gland being able to compress said solid ring set without changing the geometry of the v-ring set.

4356843, Nov 2, 1982

Jan 12, 1982

6/338911

Hans D. Baumann - Rye NH

F16K 4708

138 43

A lamellate type low noise fluid resistance device comprising a stack of identical segmented ring-shaped plates having alternate sectional openings which, when circularly displaced with one another, form narrow horizontal fluid passages between the inner and outer diameters of said plates; said stack being bolted together with upper means to close the interior stack passage and lower flange means having a central opening and extending radially outward from the stack outer diameter.

7380768, Jun 3, 2008

Feb 24, 2006

11/361216

Hans D. Baumann - Rye NH, US

Fisher Controls International LLC - St. Louis MO

F16K 31/44

251214, 251281, 277530

A balance-plug cage style control valve has substantially reduced body-bonnet bolt loading with an elastic seal. The elastic seal assembly includes an annular seal having an elastic region, a compression surface, and at least one sealing surface positioned in a channel within a valve cage mounted inside the valve body. At least one shoulder on the valve bonnet engages the elastic seal to deform the elastic region to place the sealing surface of the seal in contact with at least one of the valve bonnet or the valve cage to form a fluid seal.

5941281, Aug 24, 1999

Jun 18, 1998

9/099186

Hans D. Baumann - Rye NH
Paul J. Schafbuch - Marshalltown IA
Douglas P. Gethmann - Gladbrook IA
Michael M. Anderson - Marshalltown IA
David J. Koester - Gladbrook IA

Fisher Controls International, Inc. - Clayton MO

F16K 324

13762533

A fluid pressure reduction device with low noise generation. A stack of annular disks with fluid passageways formed of inlet slots, outlet slots, and interconnecting plenums. Selectively stacking and orienting the annular disks along with an asymmetric slot pattern creates the desired fluid passageways without creating an uninterrupted axial fluid flow path. High recovery inlet stages are in fluid communicating series with low recovery outlet stages and the combination provides a high performance fluid pressure reduction device with low noise generation.

4489917, Dec 25, 1984

Feb 10, 1983

6/452305

Hans D. Baumann - Rye NH

F16K 122

251305

A butterfly valve disc with generally oval plane surface tiltingly arranged so that the outer periphery forms a perfect circle intersecting with the inner lined bore of a butterfly valve, and where the two semicircular wall portions forming said disc have annularly offset planary axes to substantially reduced hydrodynamic torque, the outer periphery further forming a rim of generally rectangular cross-section, one corner of which seatingly contacts the inner liner of said butterfly valve.

4320778, Mar 23, 1982

Mar 9, 1981

6/241593

Hans D. Baumann - Rye NH

F16K 31122

1374546

A regulating valve capable of precisely controlling minute amounts of gaseous or liquid fluids following an electronic, pneumatic or manual command wherein the fluid is throttled between parallel surfaces which are part of a replaceable trim insert and which are positioned in respect to each other through the use of hydraulic amplifying means.

5058861, Oct 22, 1991

Feb 26, 1990

7/484815

Hans D. Baumann - Rye NH

F16K 4110

2513353

A bellows seal designed to hermetrically seal reciprocating stems from internal fluid pressure in control valves and methods of engaging and disengaging conventional valve plugs and rotatable valve stems from said bellows seal within a completely sealed environment, without resorting to welding joints.