Rotary Patents (Class 251/283)
  • Patent number: 10773904
    Abstract: A distributor head of a distribution agricultural device comprises an outer hoop provided with at least four outlets of the same size, arranged evenly along the circumference of the outer hoop, a movably positioned ring, a main inlet, and a driving mechanism connected with the ring through a ring attachment, wherein the ring is provided with a number of evenly arranged openings of the same size, number of which corresponds to half of the number of outlets. The ring can be in three operating positions, wherein in the first position, the ring is located in the same plane as the outer hoop and therefore covers every other outlet, in the second position it is not located in the same plane as the outer hoop and thus does not cover any outlet, and in the third position it is located in the same plane as the outer hoop and thus covers every other outlet, wherein the outlets covered in the third position are different from the outlets covered in the first position of the ring.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: September 15, 2020
    Assignee: BEDNAR FMT S.R.O.
    Inventors: Jiri Peterac, Pavel Syrovatka, Marek Prislinger, Vojtech Bednar
  • Patent number: 10539038
    Abstract: A fan air valve for use in high pressure airflow applications is provided. The described fan air valve embodiments employ a plate with a standoff of a height based on aerodynamic torque. The height of the standoff informs a size of an angle at which the plate is positioned within a respective flow body. The described embodiments result in a fan air valve having a closed flow area that is not much larger than the closed flow area of a valve having a perpendicular plate. The described embodiments avert compression of perimeter ice on a downstream edge of the plate during modulation without requiring software adjustments to address perimeter ice.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: January 21, 2020
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Adriel Reavis, Aaron M. Bensel, Ara Briley, Jeffrey Smith
  • Patent number: 9494087
    Abstract: An engine shutoff valve is provided which includes a valve body having an air passageway in which a disc assembly and a valve seat assembly are located. The disc assembly includes a disc member which is arranged to be rotated and moved toward the valve seat assembly upon the occurrence of an engine runaway condition to close the valve. The valve seat assembly includes an anti-friction ring which is arranged to be engaged by the disc member when the valve is closed. The anti-friction ring is rotatable with respect to the valve body and the disc member to prevent the disc member from sticking thereto after closure of the valve, whereupon the valve can be readily reopened.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: November 15, 2016
    Assignee: AMOT CONTROLS CORP.
    Inventors: David Brett, David Grimwade, Simon Davies
  • Patent number: 9267420
    Abstract: An engine cooling control device 100 includes: a housing portion 11A that has passages Pain, PAout1 and PA2; a rotor 12 that is provided in an intermediate portion M and has a rotation center at a position where at least two of distances between openings of the passages PAin, PAout1 and PAout2 opening toward the intermediate portion M and the rotation center are different from each other; a sealing function portion 13A provided between the housing portion 11A and the rotor 12; an elastic member 14 that is provided between the rotor 12 and the sealing function portion 13A and individually biases the sealing function portion 13A toward each opening of the passages PAin, PAout1 and PAout2 with respect to different phases of the rotor 12.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: February 23, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kunihiko Hayashi, Syusaku Sugamoto, Yoshio Hasegawa, Hirokazu Hata
  • Publication number: 20150076382
    Abstract: A butterfly valve with a housing having a bypass passage located within the housing of the valve. The passage extends from the normal flow path through the valve, either side of the butterfly valve plate so as to provide an alternative flow path. A cavity is located between distal ends of the passage. A valve head, located in the cavity is configured and arranged to be movable within the cavity between a closed position in which, the distal ends of the passage are fluidly disconnected through the passage and an open position in which the distal ends of the passage are fluidly connected through the passage.
    Type: Application
    Filed: August 26, 2014
    Publication date: March 19, 2015
    Applicant: ALSTOM TECHNOLOGY LTD
    Inventor: Antonin OPSITCH
  • Patent number: 8967199
    Abstract: A rotary valve adapted for use in utility scale fluidic systems improves over conventional valving schemes by affording reductions in weight, pressure drop, cost, and actuation time, as well as providing improvements in decompression performance, higher pressure capability, and longer operational life. One embodiment of a three way valve assembly utilizes electric actuation to adjust decompression in real time and facilitate port shaping. The valve assembly utilizes a pressure balanced rotor and seals to reduce actuation and bearing loads, as well as increase seal life.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: March 3, 2015
    Assignee: General Compression, Inc.
    Inventors: Matthew Blieske, Simon Christopher Helmore
  • Publication number: 20150053879
    Abstract: An automatic balancing valve is described provided with a valve body having at least one inlet channel and an outlet channel for a heat transfer fluid, wherein the flow regulation is carried out by a ball shutter having an axial through channel with axis perpendicular to the rotation axis of the ball. The ball valve has at least one radial channel aligned with the rotation axis of the ball and is connected to the axial through channel. The radial channel has an outlet port having a circular cross-section which hydraulically connects the axial through channel of the ball with the outlet channel of the valve.
    Type: Application
    Filed: March 14, 2013
    Publication date: February 26, 2015
    Inventors: Giulio Pettinaroli, Liborio Spagnolo
  • Patent number: 8875705
    Abstract: An air delivery device (ADD) for applying fluid pressure pulses (FPP) to the mouth cavity of a patient at a predetermined frequency according to a protocol The ADD, comprises: a) an air blower for blowing air into a pressure chamber via a first opening (inlet); b) airflow occluding means (AOM) provided in fluid communication with said pressure chamber; said AOM located between said first opening and a second opening (outlet) of said pressure chamber; c) a patient mouthpiece or Face Mask, in fluid communication with said second opening (outlet); and, d) means for controlling AOM, adapted to interrupt and release said airflow at a predetermined frequency and pressure, thereby applying said FPPs to the mouth cavity of a patient according to a predetermined protocol during operation.
    Type: Grant
    Filed: October 11, 2009
    Date of Patent: November 4, 2014
    Assignee: Respinova Ltd.
    Inventor: Yuval Avni
  • Publication number: 20140299806
    Abstract: A shut-off valve is provided. The shut-off valve includes a valve body having an inlet and an outlet, and a shut-off element, which is arranged in the valve body and through which a shut-off element through-channel is formed, which ends at its two ends in two mutually spaced first openings in an outer surface of the shut-off element. The shut-off element is movable between a shut-off position, in which the shut-off element blocks a fluid flow, and a flow position, in which the shut-off element allows a fluid flow between the inlet and the outlet of the valve body through the shut-off element through-channel. The shut-off element includes a first pressure-compensation channel opening with an inner end into the shut-off element through-channel, and the valve body includes a second pressure-compensation channel.
    Type: Application
    Filed: April 4, 2014
    Publication date: October 9, 2014
    Inventor: Lars Hoffmann
  • Publication number: 20140183395
    Abstract: A rotary ceramic tube valve is disclosed. The valve may have an outer shell and an inner ported cylinder which move in relation to each other of open and close ports on the valve. By turning the inner ported cylinder in relation to the outer shell, different orifices in the outer tube may be opened or closed. By coating the inner surface of the outer tube and the outer surface of the inner ported cylinder with a ceramic coating, friction in the valve may be reduced resulting in longer life, less heat generation, tighter tolerances and more reliable long term operation. Further, inner rotor 200 may also have cylindrical pressure balancing seals and related pressure communicating paths that provide counterforce to reduce stress on the bearings.
    Type: Application
    Filed: December 23, 2013
    Publication date: July 3, 2014
    Inventors: Robert C. Popke, William S. Sankey
  • Patent number: 8757204
    Abstract: A riser recoil valve for use with a tensioning system of a drilling rig to control a riser recoil event with a choke spool housing with a hydraulic tank fluid port, a spool retainer port, an actuator opening with a rotation limiting keyway and a choke spool disposed within the choke spool housing. An actuator system with a cover, electrical and directional connections is connected and retains the choke spool housing which is further retained within the choke spool housing by a retaining spool which has an orifice for hydraulic fluid. The choke spool is connected to the choke spool housing by bearing surfaces on the choke spool and the choke spool housing. The choke spool is comprised of an outer spool and a rotatable inner spool, both containing a plurality of bidirectional flow holes. The rotatable inner spool has a shaft which contains pressure neutralization holes.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: June 24, 2014
    Assignee: Drilling Technological Innovations, LLC
    Inventors: David Trent, Vamshi Gundameedi
  • Patent number: 8757205
    Abstract: A choke assembly tensioner system for use with a tensioning system of a drilling rig to control a riser recoil event with a choke spool housing with a hydraulic tank fluid port, a spool retainer port, an actuator opening with a rotation limiting keyway and a choke spool disposed within the choke spool housing. An actuator system with a cover, electrical and directional connections is connected and retains the choke spool housing which is further retained within the choke spool housing by a retaining spool which has an orifice for hydraulic fluid. The choke spool is connected to the choke spool housing by bearing surfaces on the choke spool and the choke spool housing. The choke spool is comprised of an outer spool and a rotatable inner spool, both containing a plurality of bidirectional flow holes. The rotatable inner spool has a shaft which contains pressure neutralization holes.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: June 24, 2014
    Assignee: Drilling Technological Innovations, LLC
    Inventors: David Trent, Vamshi Gundameedi
  • Publication number: 20140138566
    Abstract: Provided is a control valve trim, including a plug having a plurality of sections arranged in series along a longitudinal axis, wherein each of the plurality of sections has a diameter that is greater than the diameter of the preceding section, and a plurality of slots in the surface of each of the plurality of sections, and a liner, wherein the plug is disposed internal to the liner.
    Type: Application
    Filed: November 18, 2013
    Publication date: May 22, 2014
    Applicant: Cameron International Corporation
    Inventor: Brian J. Caprera
  • Patent number: 8511262
    Abstract: A slide-valve device sliding in a predetermined axial direction, includes a valve body having two chambers, the first chamber including a lateral fluid-intake opening and a fluid-outlet opening provided with a normally closed, conditionally opening plug device, the second chamber including first and second lateral fluid-outlet openings, mutually offset in the axial direction. Two inner regions of the second chamber are arranged contiguously in the axial direction and communicate with one another via an opening or an internal passage, and in that the sliding drawer includes a first plug member suitable for selectively plugging the communication opening or the internal communication passage or opening between the two regions and a second plugging member suitable for preventing fluid communication between the second lateral fluid-outlet opening of the second chamber and a first region of the second chamber, within a predetermined range of translation of the sliding drawer.
    Type: Grant
    Filed: January 17, 2011
    Date of Patent: August 20, 2013
    Assignee: Systemes Moteurs (Societe par Actions Simplifiee)
    Inventors: Richard Komurian, Christian Adam
  • Patent number: 7921876
    Abstract: A rotary control valve and associated actuator control system. An actuator control system comprises a rotary control valve including a generally planar face seal, and an actuator operatively connected to the rotary control valve. Another actuator control system comprises a control valve including multiple faces having multiple ports formed therein. Fluid communication is selectively permitted and prevented between the ports in response to relative displacement between the faces. A differential area is configured to apply a biasing force which maintains sealing engagement between the faces, and which increases in response to an increase in pressure applied to the control valve.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: April 12, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Adam D. Wright, Vincent P. Zeller
  • Patent number: 7882797
    Abstract: An apparatus and a method for applying particles within a pre-determined limited area of an absorbent structure. The apparatus has: a nozzle arranged to dispense the particles on the pre-determined limited area of the absorbent structure; conduit for supplying particles by a gas flow from a particle container to the nozzle; a valve arranged between the nozzle and the particle container; and, a valve vane arranged to direct the gas flow having particles through the valve from a particle inlet to an application outlet when the valve is in a first position and to direct the gas flow having particles through the valve from the particle inlet to a residue outlet when the valve is in a second position. The apparatus also has a device for maintaining a gas flow in the application outlet when the valve is in the second position.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: February 8, 2011
    Assignee: SCA Hygiene Products AB
    Inventor: Göran Forsbring
  • Patent number: 7610935
    Abstract: The invention provides a fluid controller, e.g. for a hydrostatic power steering. The controller comprises a cylindrical valve member cooperating with a housing to define at least one fluid path from a pressure source to a steering cylinder. The valve member is rotatable in the housing and comprises a sleeve and a spool, wherein the spool is rotatable within the sleeve. The fluid flow is metered by a flow meter, and the valve member comprises a plurality of meter ports communicating the fluid between the valve member and the flow meter. To obtain less friction between the sleeve and the housing and between the sleeve and the spool, the meter ports are grouped in two groups in which groups the ports are in mutually fluid communication.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: November 3, 2009
    Assignee: Sauer-Danfoss ApS
    Inventor: Niels Arbjerg
  • Patent number: 7578313
    Abstract: A rotary pilot valve in which a force required to operate the pilot valve is reduced and especially the pilot valve can be operated with a very small operating force as in a fingertip type, and the number of parts forming the pilot valve is reduced. In a body, a tank port, a pair of pump ports, a first output port, and a second output port are formed. In a cylindrical valve, a pair of notch grooves is formed and connected with each other by a balance hole. Variable throttles are formed on a side of the tank port and a side of the pump port of the notch groove. An open area of one of the variable throttles gradually increases while an open area of the other gradually reduces by tilting of an operating lever. Pressure oil lead into the notch groove through the variable throttle is output from the first output port as an intermediate throttle pressure.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: August 25, 2009
    Assignee: Komatsu Limited
    Inventors: Daisuke Kozuka, Shuuji Hori
  • Publication number: 20090151803
    Abstract: The problems of reducing the torque required to turn the valve, eliminating wear dust, and extending the life of the valves in Gifford McMahon (G-M) type multi-port pulse tube refrigerators are solved by using a rotary spool valve having radial clearance to control flow to and from the regenerator, and using face seal ports on the end of the spool to control flow to and from the pulse tubes.
    Type: Application
    Filed: January 13, 2005
    Publication date: June 18, 2009
    Applicants: SUMITOMO HEAVY INDUSTRIES, LTD., SHI-APD CRYOGENICS, INC.
    Inventor: Ralph C. Longsworth
  • Publication number: 20080302991
    Abstract: A force balanced butterfly proportional hot gas valve is configured to receive pressurized gas from a pressurized gas source and to selectively divert the pressurized gas to one or both of two outlet nozzles. The valve includes a primary inlet, a flow passage coupled to the primary inlet, a portion of the flow passage formed into a power jet structure, a diffuser, first and second outlet nozzles coupled to the flow passage, and a butterfly element disposed at least partially within the flow passage and moveable therein to selectively divert gas flow to the first, second or both first and second outlet nozzles simultaneously.
    Type: Application
    Filed: July 18, 2007
    Publication date: December 11, 2008
    Applicant: HONEYWELL INTERNATIONAL, INC.
    Inventor: Raymond R. Tseng
  • Patent number: 7322375
    Abstract: A valve includes a rotating, substantially pressure-balanced spool that selectively aligns openings within the spool with openings within a sleeve to selectively connect ports of a manifold for gas or liquid routing. A valve may also include a stem, a needle coupled to the stem. a seat configured to receive the needle, a reservoir, an outlet coupled to the reservoir, and a servo motor coupled to the stem. The servo motor rotates the stem to raise or lower the needle relative to the seat to variably restrict or allow matter flowing from the reservoir to the outlet.
    Type: Grant
    Filed: May 2, 2005
    Date of Patent: January 29, 2008
    Assignee: Vanderbilt University
    Inventors: Michael Goldfarb, Eric J. Barth, Kevin B. Fite, Jason E. Mitchell
  • Patent number: 7231940
    Abstract: A control valve for a hydraulic power steering system includes a pair of flow circuits arranged in parallel. Each flow circuit includes an upstream and downstream flow orifices arranged in series. Each set of orifices defines between the orifices an intermediate pressure zone of the valve. Both orifices close together from a centered condition of the valve and fully close substantially together at a fully closed condition of the valve. The downstream orifice is larger than the upstream orifice when open to minimize the likelihood of cavitation and noise. An equalization passage fluidly connects both intermediate pressure zones to equalize pressure despite variations in orifice size due to manufacturing tolerances. The control valve includes a bypass passage in parallel with the flow circuits. A pressure relief valve in the control valve has a normally closed valving member in the bypass passage that opens the valve in the event of overpressure.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: June 19, 2007
    Assignee: R.H Sheppard Co., Inc.
    Inventors: Jeffrey E. Tipton, David M. Danley, Kenneth C. Giurlando
  • Patent number: 7152627
    Abstract: A control valve for a hydraulic power steering system includes a pair of flow circuits arranged in parallel. Each flow circuit includes an upstream and downstream flow orifices arranged in series. Each set of orifices defines between the orifices an intermediate pressure zone of the valve. Both orifices close together from a centered condition of the valve and fully close substantially together at a fully closed condition of the valve. The downstream orifice is larger than the upstream orifice when open to minimize the likelihood of cavitation and noise. An equalization passage fluidly connects both intermediate pressure zones to equalize pressure despite variations in orifice size due to manufacturing tolerances. The control valve includes a bypass passage in parallel with the flow circuits. A pressure relief valve in the control valve has a normally closed valving member in the bypass passage that opens the valve in the event of overpressure.
    Type: Grant
    Filed: April 5, 2004
    Date of Patent: December 26, 2006
    Inventors: David M. Danley, Kenneth C. Giurlando, Jeffrey E. Tippton
  • Patent number: 7140342
    Abstract: This invention is a slotted cylindrical rotary valve assembly for an internal combustion engine, comprising of two sets of gear driven slotted cylindrical tubes in a cradle apparatus. Each set has two tubes located co-axially and rotates co-axially, and each tube is slotted to allow for improved transport of a fuel/air mixture and exhaust. In one embodiment, an intake set of tubes transport fuel/air through apertures on the tubes. The exhaust set of tubes transport exhaust through apertures (slots) on the tubes. The rotation of the tubes brings the apertures in timely alignment to allow fuel/air injection and exhaust in synchronization with the cyclical operation of the pistons in the combustion chambers. Effective sealing in one embodiment is achieved by using a modified piston with an extension wall extending longitudinally from the top of the piston to seal intake and exhaust orifices at the top of the chamber.
    Type: Grant
    Filed: March 4, 2006
    Date of Patent: November 28, 2006
    Inventor: Michael J. Murray
  • Patent number: 6808162
    Abstract: A rotary two-way servovalve provides a continuously variable orifice size in response to an input rotation while minimizing actuation torque. The valve is comprised of a cylindrical spool which is fitted to and rotates within a bore in a body. Fluid is fed into an axial hole in the spool through an inlet groove and cross holes and is metered out through one of a pair of diametrically opposed metering slots depending upon the angle of rotation. The second slot is provided to balance the pressure forces on the spool. Other features are a pivot which provides the axial location of the spool in the body while also sealing the spool, and a drain hole to prevent pressure from moving the spool axially. The valve is intended to be driven by an electrical rotary actuator such as a step motor, servo motor, or a limited angle torque motor.
    Type: Grant
    Filed: September 12, 2002
    Date of Patent: October 26, 2004
    Assignee: Victory Controls, LLC
    Inventors: Stephen J. Tranovich, Luliana G. Truia
  • Patent number: 6708691
    Abstract: A valve for controlling gas flow to ventilator or physiotherapy apparatus, has a body having first and second inlet ports and an outlet port. A shutter plate is rotatable with respect to said body and adapted selectively to interconnect said inlet ports to said outlet port. Said shutter plate is operable on rotation in a single sense to connect alternately said first inlet port to said outlet port and said second inlet port to said outlet port.
    Type: Grant
    Filed: January 10, 2000
    Date of Patent: March 23, 2004
    Inventor: Zamir Hayek
  • Patent number: 6694749
    Abstract: A multiple port rotary valve for flow switching comprises a rotor (2), a stator (7), a compressor supply (8) and a compressor return (6). Gas is supplied via the compressor supply throughout a switching cycle such that the rotor is lifted away from the stator (7). The valve further comprises a balance ram to counteract the effect of the differential pressure produced by the compressor supply, such that a gas seal is formed at the rotor/stator interface.
    Type: Grant
    Filed: October 21, 2002
    Date of Patent: February 24, 2004
    Assignee: Oxford Magnet Technology Ltd.
    Inventor: Roger Artindale Heron
  • Publication number: 20030089116
    Abstract: A multiple port rotary valve for flow switching comprises a rotor (2), a stator (7), a compressor supply (8) and a compressor return (6). Gas is supplied via the compressor supply throughout a switching cycle such that the rotor is lifted away from the stator (7). The valve further comprises a balance ram to counteract the effect of the differential pressure produced by the compressor supply, such that a gas seal is formed at the rotor/stator interface.
    Type: Application
    Filed: October 21, 2002
    Publication date: May 15, 2003
    Inventor: Roger Artindale Heron
  • Patent number: 6484999
    Abstract: The preferred embodiment comprising a truncated cone valve plug, or a truncated cone with curved sides as in the tractrix valve is described. A step is fabricated into the large end of the valve plug. A secondary seal, called a Veri-Seal, is placed on the large end of the valve plug on the step at an intermediate location between the outer diameter of the plug and the stem. Pressure forces acting downward on the step on the top of the valve plug balance the pressure forces acting upward in the channel through the valve plug. By placing the Veri-Seal at this intermediate location on the top of the plug, the spring force can be minimized and the resulting torque to open and close the valve is consequently reduced.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: November 26, 2002
    Inventors: John J. Wordin, Eugene Chisely
  • Patent number: 6470913
    Abstract: A rotory servovalve is constructed with a cylindrical annular housing and a cylindrical valve element rotatable therewithin. The valve housing has at least two inlet orifices, at least two outlet orifices, at least two first fluid transfer control orifices, and at least two second fluid transfer control orifices. At least two orifices of each type are located on opposite sides of the valve housing from each other. Preferably there is a first end orifice, a central orifice, and a second end orifice of each type. The end orifices of each type are angularly and longitudinally aligned with each other and are angularly offset 180 degrees from a central orifice of the same type. The end orifices of each type have an area equal to one-half the area of the central orifice of the same type and are equally spaced in opposite longitudinal directions from the central orifice of the same type.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: October 29, 2002
    Inventor: Raymond D. Woodworth
  • Patent number: 6427722
    Abstract: The invention concerns a rotary slide set for a hydraulic steering arrangement with an outer rotary slide and an inner rotary slide arranged in the outer rotary slide, and having in its surface tank grooves, which are, at least in predetermined rotary positions, connected with a low pressure connection, and at least one through-opening in its wall, each overlapping, at least partly, a tank groove. In a rotary slide set of this kind it is desired to avoid jamming between the inner and the outer rotary slides. For this purpose, surface recesses have been made at the remaining tank grooves to serve as balancing areas.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: August 6, 2002
    Assignee: Danfoss Fluid Power A/S
    Inventors: Claus Johansen, Tage Christiansen
  • Patent number: 6173940
    Abstract: A valve ball physically configured to minimize rotational forces imparted to the ball by fluid pressure acting thereon in flow throttling positions of the ball. In part, the physical configurations that produce the desired effect include a hollowed out ball interior and recessed areas on the ball outer surface that allow fluid flow past the ball exterior when it is partly open.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: January 16, 2001
    Assignee: Premier Farnell Corp.
    Inventors: Michael J. Kardohely, Adam Pintz
  • Patent number: 6145540
    Abstract: A rotary solenoid valve for controlling pressurized fluid in a vehicular hydraulic system includes a housing having a bore. A valve body is mounted in the bore. The valve body includes an axial bore in fluid communication with a supply port, an output port, and a reservoir port. Each of the ports in the valve body is also in fluid communication with a corresponding fluid passage formed in the housing. A rotor is received in the axial bore of the valve body. The rotor includes at least one flat having a predetermined length so that the flat is in fluid communication with the ports in the valve body. An upper stator is mounted on the valve body about the rotor. A coil is mounted about the upper stator for generating a magnetic field to selectively rotate the rotor. Rotation of the rotor directs fluid through the valve between various ports as desired.
    Type: Grant
    Filed: October 23, 1998
    Date of Patent: November 14, 2000
    Assignee: Kelsey-Hayes Corp.
    Inventor: Herbert L. Linkner, Jr.
  • Patent number: 6113359
    Abstract: A hydraulic unit including a housing (10,11,13) within which is disposed a rotating cylinder barrel (25) driven by an input shaft (21). The housing means includes an end cap (13) disposed adjacent the end (45) of the cylinder barrel, with a valve plate (39) being disposed intermediate the of the barrel and an interior surface (65) of the end cap (13). The end cap defines a kidney port (59), a high pressure port (63), and a passage (61) interconnecting the kidney port and the high pressure port. In a configuration of the end cap which makes the pump compact, high pressure in the passage can cause deformation of a portion (69) of the end cap. To accommodate such deformation, the valve plate (39) is provided with a relieved area (71) disposed immediately adjacent the deformation portion (69).
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: September 5, 2000
    Assignee: Eaton Corporation
    Inventors: Thomas A. Watts, John B. Thompson
  • Patent number: 6053204
    Abstract: A regulation disc valve with discharging device comprises a body (1) containing an easily removable fixed seat (2) with peripheral ports (3) and a central channel (13); a rotary disc slide (4) with notches and a central longitudinal aperture constantly engaging seat (2); a spindle (5); and a lid comprising a cylinder (8). A piston (7) permanently connected to slide (4) cooperates with cylinder (8) to form a discharge chamber (9), which is in turn connected to a drainage cavity (11). On the sealing surface of slide (4) is an intermediate chamber (12) formed by sectorial notches that interact with central channel (13) of seat (2) (FIG. 1, FIG. 2). The valve provides optimal pressure of slide (4) against seat (2) under various surface areas of the passage ports (3) without modifying the dimensions of the discharging device for that type of valve.
    Type: Grant
    Filed: August 18, 1998
    Date of Patent: April 25, 2000
    Inventor: Vladimir Leonidovich Matusyak
  • Patent number: 5979501
    Abstract: Fluid distributing apparatus for radial piston-type hydraulic pumps or motors is disclosed. In the apparatus, a valve casing is mounted to a housing of the pump or motor. A plate valve is seated in the central portion of the valve casing and selectively rotates while maintaining a dynamic balance. A fluid distributing plate and a pressure plate are arranged in the valve casing and are brought into close contact with top and bottom surfaces of the plate valve, thereby allowing the plate valve to selectively rotate under the state of dynamic balance. A retaining ring is interposed between the fluid distributing plate and the pressure plate and surrounds the plate valve, thereby removing dynamic friction from relatively-moving portions of the plate valve, pressure plate and fluid distributing plate.
    Type: Grant
    Filed: December 11, 1996
    Date of Patent: November 9, 1999
    Assignee: Korea Institute of Machinery & Materials
    Inventors: Hyeong-Yee Kim, Dong-Soo Jung, Yong-Bum Lee
  • Patent number: 5901737
    Abstract: An improved rotary valve having a gas bearing which prevents contact between the rotating piston and the cylindrical housing. The same working gas which the rotary valve controls is accumulated in an accumulation chamber. Fluid flow passageways, having a fixed flow resistance along their length, connect the accumulator chamber with a plurality of cavities formed on the cylinder wall of the housing. Pressurized gas is thereby pumped into the clearance gap between the piston wall and the cylinder wall, increasing in pressure where the piston wall comes closer to the cylinder wall, and decreasing in pressure where the clearance gap increases. The net effect is a centering force applied to the piston whenever it varies from an equilibrium position.
    Type: Grant
    Filed: June 24, 1996
    Date of Patent: May 11, 1999
    Inventor: Ran Yaron
  • Patent number: 5868165
    Abstract: A rotary servovalve having a cylindrical spool (18), which rotates through a limited angle, positioned within a housing (16). The spool and housing have transverse holes through both parts with matching position and diameter. The holes in the housing form cylinder ports (21) and (24) for connection to a load. A metering pin (22) is fixed in the opening in the spool and its end surfaces conform to the surface of the spool. These end surfaces block the opposed load ports (21) and (24) when the valve is in the null position. Fluid under pressure and exhaust are applied through the inlet port (20) and return (11) ports to circumferential grooves (23) and (25) on opposite sides of the metering pin, which are narrower than the diameter of the pin. When the spool is rotated, pressure is connected to one of the load ports and return to the opposite port and the resulting flow is proportional to the angle of rotation.
    Type: Grant
    Filed: January 8, 1997
    Date of Patent: February 9, 1999
    Inventor: Stephen J. Tranovich
  • Patent number: 5779222
    Abstract: A tapered plug valve having a plug provided with a separate drive shaft and formed with a channel not connected to the plug but connecting the ends thereof to enable pressure equalization. The channel may be formed by being directly drilled through the plug, or comprise a tube, secured in position by welding in a groove cast in the outer surface of the plug. A non return valve is positioned in the channel to limit pressure equalization from the wider end to the smaller end of the plug.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: July 14, 1998
    Assignee: BTR plc
    Inventors: Keith Jeffrey Hollingworth, Peter Richard Jones
  • Patent number: 5664761
    Abstract: A disk valve for a fluid under pressure, inside a housing (10), and comprising one, fixed plate cam (26), which has one port (32). A second, rotatable plate cam (34) which also has a port (36) is mounted above the fixed disk cam (26). The ports (32, 36) are eccentric to the axis of rotation of the rotating disk cam (34) such that they can be brought from an aligned open position into a misaligned closed position by rotating the rotating plate cam (34). A pressure relief surface (44, Ae), concentric to the axis of rotation, is provided on the rotating plate cam (34) and this surface is in contact with the outlet pressure of the fluid, in the closed position at least.
    Type: Grant
    Filed: May 16, 1995
    Date of Patent: September 9, 1997
    Assignee: Babcock-Sempell AG
    Inventors: Manfred Weyand, Hermann Kott
  • Patent number: 5623966
    Abstract: A choke 10 for controlling the flow of fluid along the pressurized flow line includes a body 12 having a fluid inlet aligned with a fluid outlet. A stationary outer sleeve 64 is secured within the body, and has radially opposing sleeve flow ports 102, 104 therein each preferably spaced approximately 90.degree. from the inlet axis. A rotary inner sleeve 56 is mounted within the stationary sleeve and is rotatable about a common sleeve axis 88. The inner sleeve has similar opposing ports 110, 112, so that rotation of the rotary sleeve adjusts the circumferential position of the ports to control the flow of fluid through the choke. An elastomeric seal 130, 132 circumferentially surrounding each sleeve port in one of the sleeves is provided for sealing engagement with the other sleeve. A bonnet cover 20 is removably affixed to the valve body 12 for facilitating removal of both the stationary sleeve and the rotary sleeve.
    Type: Grant
    Filed: August 10, 1995
    Date of Patent: April 29, 1997
    Assignee: Baker Hughes Incorporated
    Inventor: John E. Rodger
  • Patent number: 5597014
    Abstract: A rotary valve (10) is adapted to be associated with a fluid source (P) and a fluid return (R), and is adapted to control the flows of fluid (via control ports C.sub.1 and C.sub.2) with respect to the opposed chambers of a fluid-powered load. The valve has a body (11) provided with an elongated bore (12). The body has a plurality of passageways (23, 24, 25, 26) communicating spaced locations along the bore with the source, return and load control ports, respectively. A spool member (28) is rotatably mounted in the bore. The spool member has a passage adapted to cooperate with a body passageway so as to define at least one flow-metering port therebetween. The area of this flow-metering port or orifice (34) is a function of the angular displacement of the spool member relative to the body from a null position. The improvement comprises each of the upstream approach walls (32, 35) adjacent the orifice being relieved at an angle (.beta.) of at least 21.degree.
    Type: Grant
    Filed: November 8, 1995
    Date of Patent: January 28, 1997
    Assignee: Moog Inc.
    Inventor: Ralph L. Vick
  • Patent number: 5531247
    Abstract: The float-controlled shutoff valve has an upright flow passage controlled by a transverse valve spool rotated between open and closed positions by the float in response to changing levels of liquid within the holding tank. The spool has a deep, generally U-shaped, diametrically extending cavity on one side and a single, solid sidewall on the opposite side, the cavity being so formed that it presents a cross-flow inlet approximately one quarter turn away from the passage blocking surface of the sidewall. Hence, when the spool is in its open position during filling, the cavity is vertically flow-aligned with the passage while the blocking sidewall is disposed alongside the passage, and when the spool is in its closed position the blocking sidewall spans the passage above the horizontally disposed cavity to prevent fluid movement past the spool.
    Type: Grant
    Filed: June 28, 1994
    Date of Patent: July 2, 1996
    Assignee: Clay and Bailey Manufacturing Company
    Inventors: Ronald W. Borst, Donald R. David
  • Patent number: 5392813
    Abstract: A unified block integral bleed system for use with valves such as plug-type valves wherein pressure release flow occurs through a manifold port mounting arrangement which accesses upstream, downstream and body cavity portions of the valve and provides atmosphere taps as well without external piping. Such a manifold integral body bleed system provides internal flow channels and is preferably configured as the bonnet of the valve but could also be configured for example as the lower plate of the valve. In fact, any valve component which provides inherent access to the upstream and downstream throats and the central body cavity could serve as the bleed system manifold component as well.
    Type: Grant
    Filed: March 19, 1991
    Date of Patent: February 28, 1995
    Assignee: Johnston Pump/General Valve Inc.
    Inventors: Gordon M. Smith, Hans M. Van Der Wiel
  • Patent number: 5385332
    Abstract: Fluid pressure changes are imposed on selected interior surfaces of a plug passageway of a plug valve to create torque. In one embodiment perturbations are provided in selected flow surfaces of the valve plug to create turbulent boundary layer flow along such surfaces which generates a beneficial stabilizing torque tending to reduce or eliminate holding forces conventionally provided by mechanical parts such as detent mechanisms. In another embodiment, pilot holds between interior and exterior plug surfaces are used to alter the fluid pressure at diagonally opposite locations relative to the plug rotation axis to produce the stabilizing torque.
    Type: Grant
    Filed: January 28, 1994
    Date of Patent: January 31, 1995
    Assignee: Johnston Pump/General Valve, Inc.
    Inventor: Gordon M. Smith
  • Patent number: 5327935
    Abstract: A three-way valve for high pressures and having a plug member rotatable within a valve housing. A seal arrangement is offset from the plug member to define a space in which system fluid pressure may be trapped for the purpose of acting on the plug member to offset system fluid pressure applied in an opposite direction to the plug member. Accordingly, frictional engagement of the plug member with the valve housing is reduced.
    Type: Grant
    Filed: March 8, 1993
    Date of Patent: July 12, 1994
    Inventors: Prentiss C. Hicks, Thomas E. Ray
  • Patent number: 5307838
    Abstract: A rotary valve assembly is disclosed in which a rotary valve member is located within a casing having one or more fluid inlets and a plurality of fluid outlets. The rotary valve member has a fluid conduit which extends in a generally radial direction and which communicates with the fluid inlet. Fluid orifices communicate with the fluid conduit and exit through opposite sides of the rotary valve member to thereby minimize, or eliminate altogether, axial forces acting on the rotary valve member. Fluid outlet passages communicate with the two fluid orifices during at least part of the rotation of the rotary valve member to direct the pressurized fluid to the valve outlets. The rotary valve may include a pair of rotary valve members drivingly connected to each other such that they rotate synchronously. The connection may include gear teeth formed on the adjacent peripheries of the rotary valve members such that rotation of one of the valve members causes rotation of the other.
    Type: Grant
    Filed: January 7, 1993
    Date of Patent: May 3, 1994
    Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation (S.N.E.C.M.A)
    Inventors: Guy d'Agostino, Jean-Marie Brocard, Pierre G. J. Hebert, Franck Liotte, Eric C. Lorne, Claude Maillard, Alain Tiepel
  • Patent number: 5301922
    Abstract: A marine outboard drive having an outboard drive unit that includes a bevel gear forward, reverse transmission having hydraulically operated clutches. A hydraulic pump for actuating the clutches and for lubricating the transmission is driven off the rear end of the input shaft and control valve means selectively communicates the fluid from the hydraulic pump with the hydraulic clutches. The valve means is a rotary plug type valve but is constructed so as to minimize axial and radial forces acting that would tend to bind its movement. The construction of the outboard drive unit is such that the bevel gear transmission and hydraulically operated clutches can conveniently be inserted through like diameter oppositely facing openings formed in the upper end of the housing assembly of the outboard drive unit.
    Type: Grant
    Filed: October 4, 1991
    Date of Patent: April 12, 1994
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Kenichi Hayasaka
  • Patent number: 5207241
    Abstract: A liquid fuel shut-off valve for insertion through the feed pipe opening and mounting inside a fuel tank including, in combination, a valve body having an inlet and an outlet joined by a first bore aligned axially with the feed pipe through which the fuel is fed to fill the tank, a valve spool rotatably mounted in a cross-bore formed in the valve body between the inlet and the outlet and attached to a float extending outward from the valve body that is responsive to the level of liquid in the tank, and a valve shut-off formed in the spool including a second bore formed transverse thereto for passing fuel between the inlet and the outlet, and a relief opening formed in the trailing edge of the wall of the second bore allowing progressive rotation of the second bore from a first position in full hydraulic alignment with the first bore to a second position in full hydraulic closure with the first bore free of a countervailing hydraulic turning moment developed by the flow of fuel there through.
    Type: Grant
    Filed: August 7, 1992
    Date of Patent: May 4, 1993
    Inventor: Matthew T. Babb
  • Patent number: 5178363
    Abstract: A valve stem sealing means comprising first and second seal assemblies, the first seal assembly being proximate a valve plug and comprising an expandable ring adapted to be expanded by pressure within the valve to effect a first seal around the valve stem, and the second seal assembly being nearer a free end of the valve stem and comprising a second expandable ring adapted to be expanded by contact with a selectively movable member to effect a second seal around the stem.
    Type: Grant
    Filed: May 8, 1992
    Date of Patent: January 12, 1993
    Assignee: M&FC Holding Company, Inc.
    Inventors: John D. Icenhower, Stephen M. Horvath