Distributor Positioned Opposite Pumping Member End Face Patents (Class 417/569)
  • Patent number: 7390178
    Abstract: A compressor comprises a plurality of pairs of a cylinder bore and a piston moving reciprocally in the cylinder bore, a valve plate provided with a plurality of outlet holes for leading pressurized gas in the cylinder bores to the outside, a plurality of strap-shaped outlet valves, each whereof is free at one longitudinal end opposing a corresponding one of the outlet holes to open and close it, and a plurality of retainers, each whereof extends in the same direction as a corresponding one of the outlet valves and is provided with a divergence restricting surface opposing the valve plate with the corresponding outlet valve extending between the surface and the valve plate to restrict the divergence of the corresponding outlet valve. The divergences of the outlet valves restricted by the retainers are different from each other.
    Type: Grant
    Filed: October 19, 2004
    Date of Patent: June 24, 2008
    Assignee: Sanden Corporation
    Inventors: Hiroshi Baba, Kouji Takizawa, Yoshinobu Ichikawa
  • Patent number: 7390177
    Abstract: The invention concerns a piston compressor, particularly a hermetic refrigerant compressor, with a compression chamber, which is limited by a valve plate arrangement having a valve plate with a suction gas opening and a pressure gas opening, a suction valve plate with a suction valve element, and a pressure valve plate with a pressure valve element. It is endeavoured to achieve a good efficiency combined with a simple assembly. For this purpose, it is ensured that the pressure valve plate and the suction valve plate are located on the side of the valve plate facing the compression chamber.
    Type: Grant
    Filed: May 17, 2004
    Date of Patent: June 24, 2008
    Assignee: Danfoss Compressors GmbH
    Inventors: Frank Holm Iversen, Marten Nommensen
  • Publication number: 20080118376
    Abstract: A novel method of designing a pump by utilizing a cylinder with pistons inserted from each end. The cylinder contains two ports along the top for connection of a prime fluid chamber, a bulk fluid supply chamber and a fluid reservoir. These ports and corresponding connection details are arranged in a fashion that is perpendicular to the axis of the cylinder that comprises the pump chamber. Directly below at a different relative position also perpendicular to the axis of the pump chamber is an exit port for extrusion of fluid. The pump contains no valves or ancillary passages to direct flow between the different machine states of prime, refill, translate and dispense. The states are activated by relative position of the pistons with respect to each port. Fluid moves by translation within the pump by filling the chamber volume between the two pistons with a liquid and synchronizing the advance of the left piston with the retreat of the right piston.
    Type: Application
    Filed: November 17, 2007
    Publication date: May 22, 2008
    Inventor: Brian Leonard Verrilli
  • Patent number: 7364413
    Abstract: A reciprocating compressor is provided with a discharge valve having an area inward of a valve seat which is greater than the area of the discharge port. The valve seat also has a distinct shape compared to the valve port in preferred embodiments. The increased area within the valve seat results in an increased force tending to open the valve from a compressed fluid. On the other hand, since the valve port remains relatively small, the flow losses are not significantly increased.
    Type: Grant
    Filed: October 8, 2003
    Date of Patent: April 29, 2008
    Assignee: Carrier Corporation
    Inventor: Jeffrey J. Nieter
  • Patent number: 7281911
    Abstract: Disclosed herein is a linear compressor. In the present invention, an edge of a loop pipe, which is inserted into an outer exhale cover is inclined. It takes effect in enhancing reliability of the product and its assembling capacity, not to clog the edge of the loop pipe by an inner exhale cover.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: October 16, 2007
    Assignee: LG Electronics Inc.
    Inventor: Jeong Woo Kim
  • Patent number: 7278838
    Abstract: An inlet check valve is mountable to a valve body that, in turn, is mounted to a high pressure pump. The inlet check valve has a removable inlet seat with a first through-hole forming an inlet path and functioning as a valve seat. A valve is positionable over the first through-hole. An inlet guide has first, second, third and fourth through-holes alignable with respective first, second, third and fourth through-holes of the inlet seat. The third and fourth through-holes receive fasteners to mount the inlet check valve to the valve body.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: October 9, 2007
    Assignee: Waterjet Service, Inc.
    Inventor: S. Matthew Hodson
  • Patent number: 7237474
    Abstract: A piston pump for an electronically controllable vehicle brake system including a particularly simple, inexpensive, and space-saving throttle, and a filter hydraulically upstream of it, which prevents the throttle from becoming clogged with impurities. The pressure fluid outlet is routed at least partway along the circumferential surface of the bushing and, in the region of this section, the filter and throttle are embodied in one piece with the circumferential surface of the bushing.
    Type: Grant
    Filed: March 13, 2004
    Date of Patent: July 3, 2007
    Assignee: Robert Bosch GmbH
    Inventors: Michael Schlitzkus, Andreas Weh
  • Patent number: 7232293
    Abstract: A manual hydraulic pump includes a cylinder block 10 and an end block 8. The rear end of the cylinder block 10 and the end block 8 defines an end space 21 between them. The cylinder block 10 has cylinders 13 and oil passages 23. Each oil passage 23 extends between the rear end of one of the cylinders 13 and the end space 21. The end block 8 has a pair of cylindrical holes 27 opening into the end space 21. The end block 8 also has a pair of inlet/outlet ports 25 each communicating with the outside of the pump and one of the cylindrical holes 27. A distributing valve 22 is put in the end space 21 and spring-biased into compressive contact with the rear end of the cylinder block 10. The distributing valve 22 substantially takes the form of a disc and has a thickness smaller than the distance between the adjacent ends of the blocks 10 and 8. The distributing valve 22 has a pair of arcuate ports 22a formed on its front side.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: June 19, 2007
    Assignee: Marol Co., Ltd.
    Inventors: Katsuhiko Sasayama, Kenichi Shimada
  • Patent number: 7232294
    Abstract: In a compressor having a discharge valve mechanism, a valve retainer has a curved surface which is faced to and spaced from a movable portion of a flexible plate-like discharge valve and adapted to limit the movement of the movable portion. In a first direction parallel to the valve plate, the movable portion extends from a fixed portion, fixed to a valve plate, to face an exit end of a discharge hole of the valve plate. The curved surface has a plurality of parts different in radius of curvature from one another in a second direction parallel to the valve plate and perpendicular to the first direction.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: June 19, 2007
    Assignee: Sanden Corporation
    Inventors: Shigemi Shimizu, Shinji Nakamura, Takahiro Ito
  • Patent number: 7179065
    Abstract: Disclosed herein is a linear compressor. In the present invention, a spring sheet is equipped in an exhale cover to prevent an edge and an outer circumference of an exhale spring from touching with the exhale cover. A surface of the spring sheet is treated with a metal of the high hardness, thereby protecting against its abrasion and transformation, caused by a repetitive load from the exhale spring. Furthermore, the durability is improved by enduring the excessive or local load from the exhale spring.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: February 20, 2007
    Assignee: LG Electronics Inc.
    Inventor: Dong Han Kim
  • Patent number: 7059344
    Abstract: A discharge valve mechanism has a plurality of discharge openings. The discharge openings are placed in an open or closed state by a plate-like valve element. Each of the discharge openings is formed at a respective location between a base end side and a leading end side of the valve element. The number of discharge openings to be placed in the open state is varied depending on the pressure and the flow rate of gas refrigerant discharged from a compression chamber.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: June 13, 2006
    Assignee: Daikin Industries, Ltd.
    Inventors: Yoshitaka Shibamoto, Hirofumi Higashi, Yoshinori Asano, Takashi Shimizu, Kazutaka Hori
  • Patent number: 7048521
    Abstract: In a high pressure fuel supply pump, a housing is provided with a through-hole having a step. A plunger is slidably accommodated in the through-hole on an axial end side thereof. An intake valve member is positioned in the through-hole on an axially opposite side to the plunger with respect to the step so that a pump chamber is formed between the plunger and the intake valve member. A discharge valve member is positioned in the through-hole on an axially opposite side to the plunger with respect to the intake valve member. A plug is screw fastened into an inner wall of the through-hole on another axial end thereof so as to urge both of the discharge valve member and the intake valve member against the step so that the intake valve member and the discharge valve member are rigidly fixed in the through-hole.
    Type: Grant
    Filed: December 2, 2003
    Date of Patent: May 23, 2006
    Assignee: Denso Corporation
    Inventor: Jun Kondo
  • Patent number: 7033150
    Abstract: A high-performance hermetic type compressor in which the influence of a cylinder bore deformation caused during assembly is reduced and the sealing tightness between a piston and a cylinder block is improved. A bore hole in the cylinder block has a hollow portion. Depth H1 of the hollow portion is larger than thickness H2 of compression space V at the moment when the pressure in the compression space V reaches the discharge pressure level Pd.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: April 25, 2006
    Assignee: Hitachi Home & Life Solutions, Inc.
    Inventors: Tsutomu Nozaki, Nobuo Abe, Kensuke Kato, Takeo Watanabe
  • Patent number: 7014433
    Abstract: A valve assembly including a valve seat and a valve member movable relative to the valve seat between an open position and a closed position and defining in the closed position a high pressure side and a low pressure side, the valve member further being deformable to a deformed shape in the closed position, and the valve seat having a seat edge adapted to conform to the valve member in the deformed shape.
    Type: Grant
    Filed: February 13, 2003
    Date of Patent: March 21, 2006
    Assignee: Carrier Corporation
    Inventor: Jeffrey James Nieter
  • Patent number: 7004734
    Abstract: An inlet port 15 is divided into a plurality of holes 15a, 15b, 15c, 15 by ribs 61a, 61b, 61c. For example, when liquid refrigerant is compressed within a compression chamber, the inlet valve 21 receives excessive load which is about to bend the inlet valve 21 largely toward the suction chamber side. However, the inlet valve 21 is supported by the ribs 61a, 61b, 61c, and therefore the inlet valve 21 is hardly bent, but the inlet port 21 is positively closed.
    Type: Grant
    Filed: January 15, 2001
    Date of Patent: February 28, 2006
    Assignee: Zexel Valco Climate Control Corporation
    Inventors: Ryosuke Izawa, Minoru Kanaizuka, Katsuhiko Arai, Katsumi Sakamoto
  • Patent number: 7001156
    Abstract: An improved structure of an air inflation device is disclosed. External air is drawn to the motor and cylinder to provide rapid cooling so that the efficiency of the motor is maintained. In the present invention, a plurality of air filters is used to filter air. Thereby the air inflation device is useful and practical.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: February 21, 2006
    Inventor: Chih-Ming Chen
  • Patent number: 6979184
    Abstract: A manual negative pressure pump device comprises a suction cylinder, a handle, a pull, a piston, and an expandable spring which forms a vacuum absorbing device. A front end of the suction cylinder is a thread post with outer thread. The thread post has a central through hole and a plurality of small air holes around the through hole. The thread post is screwed with a nut of a joint. A valve and a drain-proof ring are installed between the joint and the thread post. The valve is a rubber washer and two ends of the washer have respective pins. The two pins are inserted into a central through hole of the joint and the central through hole of the thread post. The central through holes of the joint and the thread post are retained with a predetermined distance.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: December 27, 2005
    Inventors: An Chiuan Wu, Shin Shian Huang, Kuo Bau Wu
  • Patent number: 6966760
    Abstract: A reciprocating pump includes a drive section and a pump section. The drive section has a reciprocating coil assembly to which alternating polarity control signals are applied during operation. A permanent magnet structure of the drive section creates a magnetic flux field which interacts with an electromagnetic field produced during application of the control signals to the coil. Depending upon the polarity of the control signals applied to the coil, the coil is driven in one of two directions of movement. A drive member transfers movement of the coil to a pump element which reciprocates with the coil to draw fluid into a pump chamber and expel the fluid during each pump cycle. The pump is particularly well suited to cyclic pumping applications, such as fuel injection systems for internal combustion engines.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: November 22, 2005
    Assignee: BRP US Inc.
    Inventor: Martin L. Radue
  • Patent number: 6955531
    Abstract: A pump is capable of inflating and deflating an inflatable object. The pump includes a cylinder, a piston and a nozzle. The cylinder defines an outlet through which air can only flow into the cylinder and an inlet through which air can only flow from the cylinder. The piston reciprocates in the cylinder. The nozzle defines a first hole for communication with the inflatable object and a second hole for communication with the exterior. The nozzle is rotationally mounted on the cylinder between an inflating mode and a deflating mode. In the inflating mode, the first hole is communicated with the outlet, and the second hole with the inlet. In the deflating mode, the first hole is communicated with the inlet, and the second hole with the outlet.
    Type: Grant
    Filed: March 24, 2003
    Date of Patent: October 18, 2005
    Inventor: Scott Wu
  • Patent number: 6953051
    Abstract: Disclosed is a valve plate structure comprising: a suction valve for inhaling a low pressure of coolant through a linear reciprocating movement of a piston and an opening and closing operation in response to the back-and-forth movement; a valve plate coupled with the suction valve, and including a suction port for inducing the low pressure of coolant through the piston movement, a discharging port for discharging a high pressure of coolant through piston movement and a groove section having a plurality of cavities provided to surround the outside of the suction port or the discharging port; a discharging valve coupled with the valve plate for discharging the high pressure coolant through the back-and-forth movement of the piston and the opening/shutting operation in response to the back-and-forth movement; and a head cover coupled with the discharging valve, and including a suction tube formed at a position corresponding to the suction port of the valve plate and a discharging tube formed at a position corres
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: October 11, 2005
    Assignee: LG Electronics, Inc.
    Inventors: Kwang Hyup An, Jeong Ho Lee, In Seop Lee
  • Patent number: 6948920
    Abstract: A hand held an portable pump has a housing with an inlet on the bottom and an outlet on its side. A central tube extends up from the housing and has a bulb attached at its end. An inlet gate is positioned proximate the inlet to operate between a closed position in which the flow of liquid there through is inhibited and an open position in which liquid may flow through the inlet. The outlet has an outlet gate that is positioned to inhibit the flow of liquid into the housing in its closed position and to permit the flow of liquid out of the housing and into a discharge tube in the open position. The bulb is operated between an at rest position and a deflected or compressed position to urge fluid into and out of the bulb and in turn draw liquid through the inlet into the housing and to urge the liquid out of the outlet and into the discharge tube.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: September 27, 2005
    Assignee: SWS Corporation
    Inventors: Michael A. Stoner, Tyler Merica
  • Patent number: 6942472
    Abstract: A head pressure relief assembly for relieving pressure in the head assembly of an air compressor may include an exhaust valve post formed in the head assembly and an exhaust valve assembly comprised of a flapper valve. An aperture may be formed through the exhaust valve post for venting the head assembly prior to start of the compressor assembly. The flapper valve is capable of engaging the exhaust valve post to close the aperture at least partially for preventing flow from the head assembly through the aperture during the compression stroke of the compressor assembly piston. A head pressure relief assembly may also include an aperture disposed in the head assembly, a connecting tube therefor, or a check valve.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: September 13, 2005
    Assignee: DeVilbiss Air Power Company
    Inventor: Edward A. Sieberg
  • Patent number: 6932115
    Abstract: The present invention relates to a valve apparatus for a hermetic compressor. In the present invention, an elastic lead (40) is integrally formed with a discharge valve (30) in order to reduce striking force generated when the discharge valve (30) strikes a valve seat (26) and to facilitate opening of the discharge valve (30). The elastic lead (40) is formed by cutting out an intermediate portion of the discharge valve (30), and a free end of the elastic lead is bent to directed to a free end (36) or a clasped portion (32) of the discharge valve (30). The free end (36) of the elastic lead (40) is supported on a bottom surface of a recess (27) in a valve plate (20), and thus, the elastic lead (40) exerts elastic force on the discharge valve (30) in a direction that the discharge valve (30) is opened. According to the present invention constructed as such, noise generated when the discharge valve (30) operates can be minimized, and opening/closing operation of the discharge valve (30) can be smoothly performed.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: August 23, 2005
    Assignee: LG Electronics Inc.
    Inventors: Tae-Min Kim, Hyo-Jae Lee
  • Patent number: 6929456
    Abstract: A valve assembly for the reciprocating compressors, elements of which are easily and simply assembled into a single body, and which reduces operational impact and noise caused by an operation of a reed valve, thus allowing a silent operation of the reciprocating compressors. The valve assembly includes an exhaust hole plate having an exhaust hole, a reed valve plate having a reed valve, a stopper plate having a stopper, and a pressure unit formed on a lower surface of a cylinder head, wherein the exhaust hole plate, the reed valve plate and the stopper plate are assembled with the cylinder together with the cylinder head when the cylinder head is mounted to the cylinder. The stopper is bent at a junction end thereof at a predetermined angle of inclination, so that a free end of the stopper is raised toward the cylinder head.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: August 16, 2005
    Assignee: Samsung Gwang Ju Electronics Co., Ltd.
    Inventor: Seung Don Seo
  • Patent number: 6921254
    Abstract: A pump includes a cylinder, a piston, a connecting rod, a plug, a nozzle and a fastener. The cylinder includes a first open end and a second open end. The piston is movable in the cylinder. The connecting rod includes a first end connected with the piston in the cylinder and a second end located outside the cylinder. The plug is fit in the first open end of the cylinder. The nozzle is mounted on the first open end of the cylinder. The fastener is used to fasten the nozzle and the plug to the cylinder.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: July 26, 2005
    Inventor: Scott Wu
  • Patent number: 6896495
    Abstract: A reciprocating compressor that includes a cylinder block with a plurality of cylinder bores. A piston is positioned in each bore. Each piston is mounted to move in response to the a crankshaft, causing each piston to reciprocate within the cylinder bore. The compressor further includes a cylinder head which includes bores corresponding to the bores in the cylinder block. The cylinder head includes a suction port in fluid communication with a source of compressible gas and a plurality of suction plenum in the cylinder head. Protrusions or ribs extend into the suction plenum. The cylinder head also includes a discharge plenum in communication with the outlet ports of the valve plate Interposed between the cylinder head and the cylinder block is a valve plate assembly having a discharge valve, and a discharge valve retainer having a pair of radii assembled to the valve plate by snap fitting a cylinder head gasket over the discharge valve and retainer.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: May 24, 2005
    Assignee: Bristol Compressors, Inc.
    Inventors: Benjamin Alan Majerus, Peter Douglas Mantell, Philip Scott Leonard, David Turner Monk, John Richard Walters, Jr.
  • Patent number: 6893233
    Abstract: A cylinder assembly for a hermetic compressor is capable of reducing impulse and noise that is generated by a contact of a valve plate and a suction valve when the suction valve is closed. The cylinder assembly has a cylinder block having a cylinder formed therein; a cylinder head connected to the cylinder block, for sealing the cylinder off from outside; a valve plate disposed between the cylinder block and the cylinder head, the valve plate having a refrigerant suction hole; a suction valve disposed at a side of the valve plate for resiliently opening and closing the refrigerant suction hole; and a noise/impulse reducing device disposed between the suction valve and the valve plate so that the noise/impulse reducing device first contacts with the suction valve prior to contacting with the valve plate. During the refrigerant compression in the cylinder, the impulse and noise, which is generated by the hitting movement of the suction valve 38a against the valve plate, is reduced.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: May 17, 2005
    Assignee: Samsung Gwangju Electronics Co., Ltd.
    Inventor: Myung-jung Hong
  • Patent number: 6866489
    Abstract: The present invention related to a piston pump, in particular for controllable brake systems such as ABS or ESP, wherein a working chamber of the pump in front of a piston is delimited by a pressure valve, and a resetting spring with its one end is supported on a valve seat carrier of the pressure valve and with its other end resets said piston into its bottom dead center position. An object is to render the assembly of the mass-produced pumps as inexpensive and simple as possible. To achieve this object, the present invention discloses that the resetting spring be adapted to be attached directly or indirectly to the valve seat carrier in addition.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: March 15, 2005
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Axel Hinz, Hans-Dieter Reinartz, Peter Volz, Günther Vogel, Uwe Greiff, Matthias Viering
  • Patent number: 6851939
    Abstract: A system for chemical vapor deposition at ambient temperature using electron cyclotron resonance (ECR) comprising: an ECR system; a sputtering system for providing the ECR system with metal ion; an organic material supply system for providing organic material of gas or liquid phase; and a DC bias system for inducing the metal ion and the radical ion on a substrate is provided, and a method for fabricating metal composite film comprising: a step of providing a process chamber with the gas as plasma form using the ECR; a step of providing the chamber with the metal ion and the organic material; a step of generating organic material ion and radical ion by reacting the metal ion and the organic material with the plasma; and a step of chemically compounding the organic material ion and the radical ion after inducing them on a surface of a specimen is also provided.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: February 8, 2005
    Assignee: Korea Institute of Science and Technology
    Inventors: Joong-Kee Lee, Dal-Keun Park, Byung-Won Cho, Joo-Man Woo, Bup-Ju Jeon
  • Patent number: 6843645
    Abstract: A magnet pump includes a synthetic resin casing, divided into a front casing and a rear casing and configured to internally form an impeller housing chamber and a magnet can housing chamber contiguous thereto, having an inlet and an outlet for a target fluid to be transferred. The casing forms an eddy chamber at a position for dividing the front casing and the rear casing along the outer rim of the impeller housing chamber to surround the outer rim of the impeller. The eddy chamber has overhangs formed at an entry of the eddy chamber hanging over from both sides in the rotational-axis direction of the impeller.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: January 18, 2005
    Assignee: Iwaki Co., Ltd.
    Inventors: Keiichi Terada, Toshihiko Kondo, Yasumasa Kurihara, Koichi Kato, Takahiro Kinoshita
  • Patent number: 6837694
    Abstract: A hydraulic pump unit for vehicle brake control system comprising a pump housing, a cylinder received in a receiving hole formed in the pump housing. The cylinder has a bottom portion and is provided at the bottom portion with an outlet valve. A plunger is slidingly received in the cylinder and defines a pump chamber in cooperation with the cylinder. An inlet valve provided on the plunger, an inlet passage formed in the pump housing. An opening of the inlet passage is provided in the receiving hole. An outlet passage formed in the pump housing, an opening of the outlet passage is provided in the receiving hole. A plug member for closing an opening of the receiving hole, the plug member is fixed to the bottom portion of the cylinder, and an orifice plate having a passage is arranged between the bottom portion and the plug member.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: January 4, 2005
    Assignee: Unisia Jecs Corporation
    Inventors: Takayuki Furuya, Nobuhiro Tamai
  • Patent number: 6837695
    Abstract: A reciprocating refrigerant compressor includes a cylinder block having a cylinder bore, and a compression chamber defined within the cylinder bore. A cylinder head has a low-pressure chamber for receiving refrigerant gas to be drawn into the compression chamber, and is coupled to one end face of the cylinder block. A valve plate is arranged between the compression chamber and the low-pressure chamber, and includes an inlet port for guiding the refrigerant from the low-pressure chamber into the compression chamber. An inlet valve opens and closes the inlet port and has an end whose shape is adapted to a shape of the inlet port. The shape of the inlet port is non-circular, and a portion of an opening edge of the inlet port protrudes into the inlet port. Tangential lines drawn from the protruding portions intersect the opening edge of the inlet port at at least two points.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: January 4, 2005
    Assignee: Zexel Valeo Climate Control Corporation
    Inventors: Katsutaka Une, Juetsu Kurosawa
  • Publication number: 20040265157
    Abstract: 1. Dosing device for at least one medium.
    Type: Application
    Filed: June 24, 2004
    Publication date: December 30, 2004
    Inventor: Karl-Heinz Fuchs
  • Patent number: 6835053
    Abstract: In the check valve having a valve seat member and the valve member, the valve seat member is provided with first and second conical seats. The second conical seat is positioned upstream the first conical seat. An angle of the second conical seat to an axis of the valve member is more acute than that of the first conical seat. Since the check valve has the second conical seat, contact pressure applied to the first conical seat is uniformly dispersed and, thus, the first conical seat is less worn out. Further, the second conical seat prevents the valve member from cutting into and sticking to the valve seat member, even if the wear has been progressed. Accordingly, an operation of the check valve is stable for a longer period of time.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: December 28, 2004
    Assignee: Denso Corporation
    Inventor: Yasutaka Utsumi
  • Patent number: 6827561
    Abstract: A hermetic compressor having a cylinder assembly comprising a casing into which refrigerant flows, a rotor rotatably inserted in a stator disposed inside the casing, crank shaft, connecting rod connected with the crank shaft, piston, and cylinder assembly comprising a cylinder block, a valve plate connected with one side of the cylinder block and having a suction port for sucking refrigerant into the cylinder and discharge port for discharging the compressed refrigerant from the cylinder in the cylinder block, a suction valve for selectively opening the suction port, discharge valve for selectively opening the discharge port, cylinder head having suction and discharge chambers, a refrigerant path formed at one side of the cylinder head for letting refrigerant flow into the suction chamber, and a groove removed from the refrigerant path formed on the valve plate for guiding refrigerant from inside the casing into the suction chamber.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: December 7, 2004
    Assignee: Samsung Gwangju Electronics Co., Ltd.
    Inventors: Seung-don Seo, Yong-yeoun Kim
  • Patent number: 6823891
    Abstract: A suction reed valve includes a central ring shaped body having a pair of tabs extending radially outward. One of the pair of tabs is fixed to a valve plate and the other tab is free to move. A necked down region is located between the fixed tab and the central ring shaped body to facilitate the bending/deflection of the suction reed valve.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: November 30, 2004
    Assignee: Copeland Corporation
    Inventors: Scott D. Schulze, Brad A. Schulze, Donald C. Draper, Kevin J. Gehret
  • Publication number: 20040234403
    Abstract: A reciprocating compressor that includes a cylinder block with a plurality of cylinder bores. A piston is positioned in each bore. Each piston is mounted to move in response to the a crankshaft, causing each piston to reciprocate within the cylinder bore. The compressor further includes a cylinder head which includes bores corresponding to the bores in the cylinder block. The cylinder head includes a suction port in fluid communication with a source of compressible gas and a plurality of suction plenum in the cylinder head. Protrusions or ribs extend into the suction plenum. The cylinder head also includes a discharge plenum in communication with the outlet ports of the valve plate Interposed between the cylinder head and the cylinder block is a valve plate assembly having a discharge valve, and a discharge valve retainer having a pair of radii assembled to the valve plate by snap fitting a cylinder head gasket over the discharge valve and retainer.
    Type: Application
    Filed: May 22, 2003
    Publication date: November 25, 2004
    Inventors: Benjamin Alan Majerus, Peter Douglas Mantell, Philip Scott Leonard, David Turner Monk
  • Patent number: 6820644
    Abstract: A delivery valve device for a refrigerant compressor. The delivery valve device include a valve plate with the delivery passage closed by a delivery valve fixed at one end to the valve plate and pressed against this valve plate at its free end by a spring. A valve stop is fixed with the delivery valve and the spring to the valve plate to clamp one end of the delivery valve and of the spring onto the valve plate using rivets. The sliding contact of the free end of the delivery valve on the plate avoids valve bounce and flutter. Such a delivery valve may reduce the noise level in refrigeration compressors.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: November 23, 2004
    Assignee: Tecumseh Europe S.A.
    Inventor: Philippe François
  • Patent number: 6821096
    Abstract: A plural component pumping apparatus including a piston and cylinder for each component to be pumped. Reciprocation of the piston in the cylinder draws the component into the cylinder during an intake stroke of the pumping apparatus and exhausts the material from the cylinder during an exhaust stroke of the pumping apparatus. Intake and exhaust valves are provided into the cylinder. Each of the intake and exhaust valve includes a housing oriented outside the cylinder to facilitate repair or replacement of the valves. A pumping motor on each side of the cylinder is coupled to a support and to the piston to move the support and piston relatively toward each other during the exhaust stroke and relatively away from each other during the intake stroke. A position indicator is coupled to the pumping motor. The pumping motor controls sense the position of the position indicator.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: November 23, 2004
    Assignee: Illinois Tool Works Inc.
    Inventors: Michael J. Kosmyna, Ralph Wisniewski
  • Publication number: 20040219042
    Abstract: A cylinder block assembly for a reciprocating pump includes a block body having a piston chamber that receives a piston of the reciprocating pump. The cylinder block assembly has an outlet valve assembly positioned within the block body that is positioned in fluid communication with the piston chamber. An outlet valve retainer retains the outlet valve relative to the piston chamber. The cylinder block assembly includes an inlet valve assembly extending through a side of the block body to the piston chamber. An inlet valve retainer also retains the inlet valve assembly relative to the piston chamber. A discharge passage extends from the outlet valve assembly to another side of the block body. A portion of the discharge passage extends between the inlet valve assembly and the inlet valve retainer.
    Type: Application
    Filed: April 30, 2004
    Publication date: November 4, 2004
    Inventors: Vladimir Kugelev, Mark D. Matzner
  • Publication number: 20040219044
    Abstract: A suction passage (1) and a discharge passage (2) for a to-be-transferred fluid are disposed in a pump body (3). A bottomed cylindrical bellows (6) is integrally coupled to the axial rear side of the pump body to form a closed space (7). The suction passage (1) has an upstream portion (1A) having a larger diameter and a predetermined passage cross section area, and downstream portions (1B) which are formed by branching the upstream portion into a bifurcated or Y-shape while reducing the passage cross section area. Two first small check valves (15) of the spring type in each of which the pressure receiving area is reduced in accordance with the reduced passage cross section areas of the smaller-diameter downstream portions (1B) are attached respectively to outlet portions of the smaller-diameter down-stream portions (1B) so as to be arranged in parallel. The outlets of the first check valves (15) are opened in the closed space (7).
    Type: Application
    Filed: April 28, 2004
    Publication date: November 4, 2004
    Applicant: Nippon Pillar Packing Co., Ltd.
    Inventor: Hitoshi Kawamura
  • Publication number: 20040213690
    Abstract: Various embodiments of the invention, therefore, provide pumps, and methods for their production. One exemplary embodiment of the invention comprises a ceramic plunger pump assembly. The pump assembly can include a pump body, which defines a pump chamber with an inlet port and an outlet port. The pump body can further define a plunger port disposed between the inlet port and the outlet port. In certain embodiments, the pump assembly can further include a ceramic plunger housing, which defines a cylindrical bore having an interior diameter. The plunger housing can be disposed within the plunger port. The pump assembly can also include a ceramic plunger. In particular embodiments, the ceramic plunger is slidably disposed within the cylindrical bore, such that the ceramic plunger may be reciprocated back and forth within the bore. Thus, the fluid can be moved from the inlet port of the pump chamber to the outlet port of the pump chamber through the reciprocal action of the plunger.
    Type: Application
    Filed: April 22, 2003
    Publication date: October 28, 2004
    Applicant: CoorsTek, Inc.
    Inventor: J. Mark Chenoweth
  • Publication number: 20040202562
    Abstract: A reciprocating compressor is provided with a seal casing and includes a motor and a uni-body member which is mounted to the motor and provides a cylinder and head portion formed as a unitary member in order to reduce the number of machining operations and the number of parts required for assembly of the reciprocating compressor.
    Type: Application
    Filed: April 14, 2003
    Publication date: October 14, 2004
    Inventors: Walter T. Grassbaugh, Randall L. Knick, Kevin J. Gehret, Frank S. Wallis, Ernest R. Bergman, Kimberly A. Wenning, Jacob A. Groshek
  • Publication number: 20040202563
    Abstract: A valve assembly for the reciprocating compressors, elements of which are easily and simply assembled into a single body, and which reduces operational impact and noise caused by an operation of a reed valve, thus allowing a silent operation of the reciprocating compressors. The valve assembly includes an exhaust hole plate having an exhaust hole, a reed valve plate having a reed valve, a stopper plate having a stopper, and a pressure unit formed on a lower surface of a cylinder head, wherein the exhaust hole plate, the reed valve plate and the stopper plate are assembled with the cylinder together with the cylinder head when the cylinder head is mounted to the cylinder. The stopper is bent at a junction end thereof at a predetermined angle of inclination, so that a free end of the stopper is raised toward the cylinder head.
    Type: Application
    Filed: June 20, 2003
    Publication date: October 14, 2004
    Applicant: SAMSUNG GWANG JU ELECTRONICS CO., LTD.
    Inventor: Seung Don Seo
  • Patent number: 6796331
    Abstract: A delivery valve device for a fluid compressor. The device includes a valve plate with a delivery passage closed by a delivery valve pressed against the valve plate by a spring. The valve plate includes an inset housing to accommodate the delivery valve and the spring, the housing having a shape tailored to the delivery valve and spring to hold the delivery valve and spring in position, and to prevent the delivery valve and spring from rotating. Such a delivery valve can be applied in particular to refrigerant compressors.
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: September 28, 2004
    Assignee: Tecumseh Europe S.A.
    Inventor: Charles Lacroix
  • Publication number: 20040161353
    Abstract: High pressure plunger pump, comprising at least two in-line cylinders, each of which is connected via respective conduits and relative valves to an intake manifold and to a delivery manifold, said cylinders being provided within a single block together with said conduits and said manifolds, the intake manifold being positioned in front of the line of cylinders and being in direct communication with the cylinders via a conduit connected to a dead compartment provided as an extension of the respective cylinder and in which the intake valve is located, retained in position by deformable means.
    Type: Application
    Filed: February 13, 2004
    Publication date: August 19, 2004
    Applicant: ANNOVI REVERBERI S.PA.
    Inventor: Fabrizio Fabbri
  • Publication number: 20040161352
    Abstract: A valve assembly including a valve seat and a valve member movable relative to the valve seat between an open position and a closed position and defining in the closed position a high pressure side and a low pressure side, the valve member further being deformable to a deformed shape in the closed position, and the valve seat having a seat edge adapted to conform to the valve member in the deformed shape.
    Type: Application
    Filed: February 13, 2003
    Publication date: August 19, 2004
    Inventor: Jeffrey James Nieter
  • Patent number: 6767195
    Abstract: A valve for a hermetic compressor has a valve plate disposed between a cylinder block and a cylinder head. The cylinder block has a cylinder, and the cylinder head has a refrigerant suction chamber and a refrigerant discharge chamber, which are partitioned from one another by a partition. The cylinder head further has at least first, second and third plates of different thicknesses, a refrigerant suction passage for interconnecting the refrigerant suction chamber and the cylinder; and a refrigerant discharge passage for interconnecting the refrigerant discharge chamber and the cylinder. A suction valve opens and closes the refrigerant suction passage while being moved by pressure in the cylinder; and a discharge valve opens and closes the refrigerant discharge valve while being moved by the pressure in the cylinder.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: July 27, 2004
    Assignee: Samsung Gwangju Electronics Co., Ltd.
    Inventor: Sung-tae Lee
  • Publication number: 20040131489
    Abstract: A compact 180° opposed piston pump/compressor minimizes axial spacing between its pistons on the drive shaft and thereby reduces the shaking couple and noise from reciprocation. Each piston has its own eccentric element press-fit into the connecting rods so as not to occupy space between the pistons. The shaking couple can be further reduced for pistons of different masses by selecting the mass of the cup retainers to compensate for the difference in overall piston masses. The pump also includes an improved cylinder sealing arrangement having a circumferential groove in an angled surface at the end of the cylinder. The pump also has a special cover and seal for closing the open neck of the pump crankcase and an improved multi-lobed valve stop. The pump further uses tubular transfer members for transferring intake and/or exhaust air into the crankcase and/or between valve heads.
    Type: Application
    Filed: January 8, 2003
    Publication date: July 8, 2004
    Inventors: Shawn A. Leu, Raymond J. Kultgen
  • Publication number: 20040120839
    Abstract: An air compressor with a cylinder head attached to a cylinder deck of a crankcase is disclosed. Openings are provided through the cylinder deck and cylinder head and elongated fasteners having a fastening complement are used to provide a compressed engagement between the deck and cylinder head. Using a fastener inserted through the openings and a fastener complement reduces the potential that the bore is distorted during assembly without adding material to the assembly that undesirably increases its weight or complicates foundry operations. Machining of the deck is also simplified by providing the opening therethrough.
    Type: Application
    Filed: December 20, 2002
    Publication date: June 24, 2004
    Inventors: Valery V. Dunaevsky, Harold McCormick