JOHN WILLIAM PFEIFFER
Engineers in Tivoli, PA

5769572, Jun 23, 1998

Dec 17, 1996

8/767787

John W. Pfeiffer - Hughesville PA

Young Industries, Inc. - Muncy PA

B65G 5314

406153

A bag dumping station for receiving particulate materials from rupturable bags or other portable containers is provided with a vacuum facility with a direct inlet to the hopper of the station and includes an ejector for providing motive gas for vacuum conveying particulate solids from a drum or spilled materials from broken bags.

6739358, May 25, 2004

Aug 20, 2002

10/223383

John W. Pfeiffer - Hughesville PA

The Young Industries, Inc. - Muncy PA

B65B 104

141 10, 141312, 141332, 153 15, 153 22

A particulate material conveying apparatus generally consisting of an upper conduit having a material receiving inlet; a first intermediate conduit communicating with the upper conduit and swivable relative to the upper conduit about a first axis; a second intermediate conduit communicating with the first intermediate conduit and swivelable relative to the first intermediate conduit about a second axis parallel to the first axis; a lower conduit having a material discharge outlet, communicating with the second intermediate conduit and swivable relative to the second intermediate conduit about a third axis parallel to the second axis; and a mechanism for translating the angular displacement of the second intermediate conduit relative to the first intermediate conduit about the second axis to angular displacement of the first intermediate conduit relative to the upper conduit about the first axis.

6722822, Apr 20, 2004

Aug 20, 2002

10/223382

John W. Pfeiffer - Hughesville PA
James E. Mothersbaugh - Muncy PA

The Young Industries, Inc. - Muncy PA

B65G 5340

406164, 406106, 406182, 406 89

A system for pneumatically conveying a bulk particulate material generally consisting of means for holding such material, having an inlet and an outlet; a first material transport line segment including a first conduit formed of a gas permeable material having an inlet communicating with the outlet of the holding means and an outlet, defining a material flow passageway, and a second conduit formed of a gas impermeable material spaced from and encompassing the first conduit, defining a plenum; a second material transport line segment including a first conduit formed of a gas permeable material having an inlet communicating with the outlet of the first conduit of the first segment, defining a continuation of the material flow passageway, and an outlet, and a second conduit section formed of a gas impermeable material spaced from and encompassing the first conduit thereof, defining a plenum; the second segment being displaceable relative to the first segment between a first position communicating the outlet of the first conduit of the second segment with a receptacle into which the material is to be conveyed, and a second position communicating the outlet of the first conduit of the second segment with the inlet of the material holding means; means for supplying gas under pressure to the plenums, causing such gas to penetrate the first conduits to fluidize material flowing in the passageways and means for inducing the flow of material in the passageways, causing material induced therein from the holding means to be impelled therethrough.

6682290, Jan 27, 2004

Apr 29, 2003

10/424780

John W. Pfeiffer - Hughesville PA
James E. Mothersbaugh - Muncy PA

The Young Industries, Inc. - Muncy PA

B65G 6500

414328

A system for handling a bulk particulate material generally consisting of a vessel for holding a mass of such material; a first elongated tube formed of a gas permeable material, having an inlet communicating with such vessel; a second elongated tube formed of a gas impervious material encompassing the first tube and spaced therefrom about the periphery of the first tube; a plurality of transversely disposed, longitudinally spaced partitions disposed between said first and second tubes, forming a plurality of isolated chambers encompassing the first tube; each of such isolated chambers having means for selectively introducing a fluidizing gas therein independently of the other of such chambers, at variable volumes and pressures whereby the volume and pressure of fluidizing gas diffused through the first tube may be modulated along the length thereof; and means for injecting a flow inducing gas into the first tube.

6719500, Apr 13, 2004

Aug 20, 2002

10/223381

John W. Pfeiffer - Hughesville PA
James E. Mothersbaugh - Muncy PA

The Young Industries, Inc. - Muncy PA

B65G 5338

406 91, 406 95

A system for pneumatically conveying bulk particulate materials generally consisting of a material transport line including a first conduit formed of a gas permeable material providing a material flow passageway having an inlet and an outlet, a second conduit formed of a gas impermeable material, encompassing and spaced from the first conduit, and a plurality of partition walls disposed between the conduits and spaced along the lengths thereof, defining a plurality of plenums; a nozzle connectable to a source of gas under pressure, inserted into the passageway for injecting gas under pressure therein to impel material disposed in the passageway toward the outlet thereof; a main gas supply line connectable to a source of gas under pressure having branch lines each communicable with a plenum; and each of the branch lines having a pressure regulating means.

7073985, Jul 11, 2006

Aug 23, 2005

11/208551

John W. Pfeiffer - Hughesville PA, US
James E. Mothersbaugh - Muncy PA, US

The Young Industries, Inc. - Muncy PA

B65G 53/28

406106, 406183

A system for pneumatically conveying a bulk particulate material generally consisting of means for holding such material, having an inlet and an outlet; a first material transport line segment including a first conduit formed of a gas permeable material having an inlet communicating with the outlet of the holding means and an outlet, defining a material flow passageway, and a second conduit formed of a gas impermeable material spaced from and encompassing the first conduit, defining a plenum; a second material transport line segment including a first conduit formed of a gas permeable material having an inlet communicating with the outlet of the first conduit of the first segment, defining a continuation of the material flow passageway, and an outlet, and a second conduit section formed of a gas impermeable material spaced from and encompassing the first conduit thereof, defining a plenum; the second segment being displaceable relative to the first segment between a first position communicating the outlet of the first conduit of the second segment with a receptacle into which the material is to be conveyed, and a second position communicating the outlet of the first conduit of the second segment with the inlet of the material holding means; means for supplying gas under pressure to the plenums, causing such gas to penetrate the first conduits to fluidize material flowing in the passageways and means for inducing the flow of material in the passageways, causing material induced therein from the holding means to be impelled therethrough.

4556079, Dec 3, 1985

Oct 28, 1983

6/546373

John W. Pfeiffer - Hughesville PA

Koppers Company, Inc. - Pittsburgh PA

B08B 500, F16K 5100

137240

A rotary vane valve having a cylindrical housing with a pair of opposed end bells and an interior axial shaft. A pair of spaced shroud structures are fixed to the shaft at the ends of the vanes to generally separate the interior of the cylindrical housing from the end bells. These shroud structures are spaced from the cylindrical housing at their outer peripheral edges, but an annular throttle plate is spaced axially outwardly at a close distance from these shrouds and adjacent at its outer edge to the cylindrical housing to increase the velocity of purge gas flowing inwardly between the cylindrical housing and the outer peripheral edge of the shroud so that the escape of gas from the interior of the cylindrical housing is effectively prevented. The inner lateral surface of the annular throttle plate is divided into a low pressure zone adjacent the inlet opening and a high pressure zone adjacent the outlet opening in situations where the inlet opening is at a lower pressure than the outlet opening. The low pressure zone is roughened or has a plurality of radially spaced, concentric arcuate grooves while the high pressure zone is recessed with the result that frictional resistance to the flow of purge gas will be greater in the low pressure zone than in the high pressure zone so that the flow of purge gas will tend to be uniformly distributed at all points along the periphery of the throttle plate.

7384230, Jun 10, 2008

Jan 10, 2006

11/328140

John W. Pfeiffer - Hughesville PA, US
James E. Mothersbaugh - Muncy PA, US
Anthony Boroch - Montoursville PA, US

The Young Industries, Inc. - Muncy PA

B67B 7/00

414412, 2221812

A system for unloading a container of bulk particulate material, having attachment means for lifting the container and a spout for discharging material therefrom, generally consisting of an unloading apparatus including a material hopper, a mobile apparatus and a carrier member including an arrangement for detachably connecting a container thereto, an arrangement for detachably mounting on a mobile apparatus and an arrangement for detachably mounting on the unloading apparatus.

7967546, Jun 28, 2011

Jan 31, 2007

11/700001

John W. Pfeiffer - Hughesville PA, US
James E. Mothersbaugh - Muncy PA, US
Anthony Boroch - Montoursville PA, US

The Young Industries, Inc - Muncy PA

B67B 7/00

414607, 414412, 2221812

A system for unloading a container of bulk particulate material, having attachment means for lifting the container and a spout for discharging material therefrom, generally consisting of an unloading apparatus including a material hopper, a mobile apparatus and a carrier member including an arrangement for detachably connecting a container thereto, an arrangement for detachably mounting on a mobile apparatus and an arrangement for detachably mounting on the unloading apparatus.

4565305, Jan 21, 1986

May 31, 1983

6/499783

John Fischer - Montgomery PA
Kenneth A. Heaton - Lewisburg PA
John W. Pfeiffer - Hughesville PA

Koppers Company, Inc. - Pittsburgh PA

G01F 1124

222368

A rotary vane valve having a cylindrical housing with a pair of opposed end bells and an interior axial shaft. Opposed inlet and outlet openings on the side of the cylindrical housing allow transverse fluid flow through the housing and radial vanes project from the axial shaft to facilitate the transfer of fluid from the inlet at one pressure to the outlet at a different pressure. A pair of spaced shroud structures are fixed to the shaft at the ends of the vanes to generally separate the interior of the cylindrical housing from the end bells. These shroud structures are spaced from the cylindrical housing at their outer peripheral edges, but an annular throttle plate is spaced axially outwardly at a close distance from these shrouds and adjacent at its outer edge to the cylindrical housing to increase the velocity of purge gas flowing inwardly between the cylindrical housing and the outer peripheral edge of the shroud so that the escape of gas from the interior of the cylindrical housing is effectively prevented.