With Spring Patents (Class 137/857)
  • Patent number: 10480665
    Abstract: A valve structure includes: a valve seat part furnished with a valve hole portion having a valve hole connecting a first gas chamber to a second gas chamber, and a valve-body supporting wall part laterally extending from the valve hole portion; an elastic valve-body member furnished with a first elastic platelike section disposed paralleling the valve hole portion, and a second elastic platelike section extending from the first elastic platelike section, wherein the first elastic platelike section is elastically deformable against the second elastic platelike section under pressure differential between the first gas chamber and the second gas chamber such as to open the valve hole; and an elastic pressing member arranged paralleling the second elastic platelike section such as to elastically deform together with the elastic valve-body member, and being of planar form configured so as to expose the first elastic platelike section.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: November 19, 2019
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventor: Yoshikatsu Hiratsuka
  • Patent number: 10174756
    Abstract: The present relation relates to the technological field of compressors. Problem to be solved: The current reciprocating compressors valves arrangements includes valves whose flexion area suffer from direct interference of the body disposed immediately over said valve. Such feature, besides damaging de valve movement, further causes wear phenomena on the flexion areas of the valve, which can result in critical fault of the valve and consequently of the compressor. Resolution of the problem: It is revealed a valve arrange whose end valve capable of moving includes a flexion area previously defined and intentionally misaligned with any contact area of the body immediately disposed over the valve.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: January 8, 2019
    Assignee: Whirlpool S.A.
    Inventors: Tadeu Tonheiro Rodrigues, Fabian Fagotti, Dietmar Erich Bernhard Lilie
  • Patent number: 10094373
    Abstract: A valve device of a compressor of the present invention comprises a plate (17), a reed (21, 75), and a stopper (31), wherein the reed includes: an opening/closing section (60, 70), a fastened section (61, 71); and a joining section (62, 72), the opening/closing section, the fastened section and the joining section being arranged in a direction in which a symmetric axis extends; wherein in a portion of the joining section which is closer to the opening/closing section, a pair of portions (102, 112, 82, 86) of an outer periphery of each of one or two openings (63, 65, 73, 77) which are closest to both ends of the joining section are symmetric with respect to the symmetric axis so as to form a substantially-V-shape or substantially-U-shape, in a direction from the opening/closing section toward the fastened section; and in a portion of the joining section which is closer to the fastened section, a pair of portions (103, 113, 83, 87) of the outer periphery of each of one or two openings which are closest to the b
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: October 9, 2018
    Assignee: PANASONIC CORPORATION
    Inventors: Takumi Hikichi, Yu Haraki
  • Patent number: 9791067
    Abstract: A pressure relief valve includes a valve seat at the outlet, a valve body, and an air dashpot damper. In some embodiments, the valve body is configured to engage the valve seat and move along a central axis relative to the valve seat in response to a pressure at the outlet to regulate a flow of combustible gas through the outlet. In some embodiments, the air dashpot damper includes a tubular member having a closed distal end and an open proximal end, and a piston member received within the tubular member. In some embodiments, the tubular member or the piston member is attached to the valve body, and the piston moves relative to the tubular member along an axis of the tubular member in response to movement of the valve body relative to the valve seat. In some embodiments, the pressure relief valve includes a plurality of the air dashpot dampers.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: October 17, 2017
    Assignee: Steffes Corporation
    Inventors: Dean A. Kovash, Todd C. Mayer
  • Patent number: 8955542
    Abstract: An apparatus (10 or 10a) for use in venting a compartment of a vehicle includes valve elements (14 and 16 or 14a and 16a). A biasing spring (130 or 130a) is effective to urge one of the valve elements toward a closed condition. A spring connection (134 or 236) is effective to transmit torque urging the one valve element (16 or 16a) toward a closed condition. Another valve element (14) may overlie the one valve element (16). Alternatively, the valve elements (14a and 16a) may be spaced from each other.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: February 17, 2015
    Assignee: TRW Automotive U.S. LLC
    Inventor: John C. Kiezulas
  • Patent number: 8425204
    Abstract: Pump, for example for pumping lubricating oil in an internal combustion engine, more particularly a multi-stroke vane cell pump, with a rotor and vanes which can slide at least radially in rotor slots and have vane heads that slide along a stroke contour, the stroke contour having a radial outlet that can be closed by a valve device.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: April 23, 2013
    Assignee: LuK Automobiltechnik GmbH & Co. KG
    Inventors: Heiko Schulz-Andres, Dirk Kamarys, Kornelia Frowein
  • Patent number: 8360105
    Abstract: The air admittance vent (“AAV”) includes a cup shaped vent body and a vertically reciprocating valve element that seats against a valve seat that has two separate contact areas defined by an annular ridge and a conical face formed in the bottom of the vent body. When the valve element moves into its closed position, the pliable diaphragm of the valve element initially contacts the annular ridge, which forms a first part of the valve seat before moving fully into sealing contact with the conical face, which forms the second part of the valve seat. The contact with the annular ridge provides a first initial seal before the diaphragm nests into contact with the conical face to form a second seal with the valve seat.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: January 29, 2013
    Assignee: JB Products, Inc.
    Inventors: Steven W. Cashen, Randolph J. Christman, Patrick D. Delahanty, Maynard R. Searing, Sr., G. Scott Searing, Fred Krolzick
  • Patent number: 8360106
    Abstract: Disclosed is a one-way valve and sealing assemblage wherein an affixed curved pliant film device, a compressible spring, and a reciprocal curved channel surface automatically work cooperatively to permit forward material flow above a predetermined fluid pressure threshold yet check reverse material backflow at any pressure.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: January 29, 2013
    Inventor: William Anthony Harper
  • Publication number: 20110265900
    Abstract: An inflating valve for an inflatable object has a body, a valve disk, a cap and a recoil member. The body is body and has a passage and a disk mount. The passage is defined through the body and has a bottom opening. The valve disk is attached securely to the bottom of the body to close the bottom opening of the passage and has a mounting end and a free end. The mounting end is mounted securely on the disk mount of the body. The free end is opposite to the mounting end. The cap is attached to the body around the bottom opening and holds the valve disk inside. The recoil member is mounted between the valve disk and the cap to push the valve disk closing the bottom opening of the passage in the body.
    Type: Application
    Filed: April 29, 2010
    Publication date: November 3, 2011
    Inventor: Chun-Chung TSAI
  • Publication number: 20100200095
    Abstract: The inclination of the suction reed at the time of sucking the refrigerant can be increased when L/S is not more than 0.25 where S (mm2) represents the area within the periphery of the suction valve seat of the suction reed, and L (mm) represents the length between the support end and the tip on the opening/closing part side of the suction reed. The increased inclination of the suction reed smoothes the flow of the refrigerant into the cylinder bore from the inside of the suction valve seat so as to reduce the suction resistance and the clearance volume, thereby reducing the re-expansion loss. As a result, the refrigerant flow is increased to increase the volumetric efficiency, thereby improving the freezing performance of the hermetic compressor.
    Type: Application
    Filed: April 13, 2007
    Publication date: August 12, 2010
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Kazuhiro Yokota, Kiwamu Watanabe
  • Publication number: 20090232669
    Abstract: A refrigerant compressor including a discharge valve system, which is configured in such a manner that the discharge valve system includes recess (124) having discharge hole (125) which communicates with a compression chamber of a cylinder and opening on the bottom surface, a discharge reed (130) for covering discharge hole (125), and stopper (132) formed of a plate spring to be arranged above discharge reed (130), that discharge reed (130) and one end of stopper (132) is fixed to the bottom surface of recess (124) and the other end of stopper (132) comes into contact with contact portion (128) so that stopper (132) and the bottom surface of recess (124) defines a space therebetween, and that discharge reed (130) is arranged in the space. The refrigerant compressor having a high compression efficiency and low variation in noise level can be provided.
    Type: Application
    Filed: July 3, 2006
    Publication date: September 17, 2009
    Inventor: Toshihiko Ota
  • Patent number: 7493915
    Abstract: Disclosed herein is a discharge valve for a compressor. The discharge valve comprises a valve plate for opening or closing a discharge port, a valve spring positioned downstream from the valve plate and adapted to provide elasticity to the valve plate, and a retainer positioned downstream from the valve spring and adapted to limit a maximum displacement of both the valve plate and the valve spring. The valve spring has a fluid-passage hole for the passage of fluid discharged from the discharge port. With such a configuration, the discharge valve can not only reduce flow loss and overshooting loss of the fluid, but also minimize backflow of the discharged fluid, resulting in an improvement in performance of the compressor.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: February 24, 2009
    Assignee: LG Electronics Inc.
    Inventors: Jeong Ho Lee, Ho Seon Rew
  • Patent number: 7074022
    Abstract: A reciprocating compressor including cylinder block with a plurality of cylinder bores. A piston is positioned in each bore and 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, and a suction port in fluid communication with a source of compressible gas and a plurality of suction plenum. 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: February 25, 2005
    Date of Patent: July 11, 2006
    Assignee: Bristol Compressors, Inc.
    Inventors: Benjamin Alan Majerus, Peter Douglas Mantell, Philip Scott Leonard, David Turner Monk, John Richard Walters, Jr.
  • Patent number: 7066296
    Abstract: A valve device for a silence opens a bypass passage provided in the silencer to flow exhaust gas through the bypass passage when exhaust gas pressure rises to a certain pressure. The valve device includes a base having a valve opening through which exhaust gas flows, and a plate-like valve for opening and closing the valve opening. The plate-like valve is fixed to the base at its proximal portion, and is bent at both edges thereof in a certain range extending from its distal end toward the proximal portion.
    Type: Grant
    Filed: October 6, 2003
    Date of Patent: June 27, 2006
    Assignees: Honda Giken Kogyo Kabushiki Kaisha, Yutaka Giken Co., Ltd.
    Inventors: Masayuki Uegane, Isao Hirokawa
  • Patent number: 7063520
    Abstract: In a reciprocating compressor including a piston slide-inserted into the compression space of the cylinder, having a gas path therein, inducing a fluid into the compression space through the gas path and varying a volume of the compression space while performing a linear reciprocating motion with a mover of a reciprocating motor; a suction valve combined with the front end of the piston detachably and adjusting suctioning of the fluid into the compression space; and a discharge valve combined with the front end of the piston detachably and opening/closing the compression space of the cylinder in the linear reciprocating motion of the piston, a suction valve assembly of a reciprocating compressor includes an elastic member for absorb impact of the suction valve in clash and a combining member consisting of a head portion having a width so as to be overlapped with part of an opening/closing portion of the suction valve or a retainer and a valve seat, and accordingly a reliability of the compressor can be improv
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: June 20, 2006
    Assignee: LG Electronics Inc.
    Inventors: Won-Sik Oh, Sang-Man Oh, Hyung-Jin 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: 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: 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: 6823896
    Abstract: A valve assembly of a close-type reciprocal compressor. The valve assembly includes a valve plate disposed between a cylinder body and a cylinder head, a reed valve for opening and sealing a refrigerant discharge hole formed at the valve plate, a first stopper for resisting against a bending force of the reed valve bent when the refrigerant is discharged, a second stopper for resisting against a bending force of the first stopper by the reed valve, a keeper for limiting bending degree of the second stopper by the first stopper, and a bolt engaged with the keeper for connecting with the stopper bent by the reed valve. When refrigerant discharge pressure is increased, the resisting force against the bending force is added by the first stopper and the second stopper in turn, and thus compressing efficiency is increased by changing opening degree of the reed valve corresponding to the change of the pressure, and at the same time, noise can be reduced by lessening shock added to the reed valve.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: November 30, 2004
    Assignee: Samsung Gwangju Electronics Co., Ltd.
    Inventor: Myung-jung Hong
  • Publication number: 20040231737
    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 internediate 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: Application
    Filed: March 12, 2004
    Publication date: November 25, 2004
    Inventors: Tae-Min Kim, Hyo-Jae Lee
  • 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: 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
  • Patent number: 6592346
    Abstract: A compressor includes a particularly shaped discharge valve which extends into the discharge port. The shaped valve includes a convex portion on the seat side of the valve which extends downwardly into the discharge port. The shaped valve furthermore includes a concave portion on the seat side of the valve that begins where the convex portion ends. The beginning of the concave portion on the seat side of the valve is located so as to prevent flow separation of the refrigerant when flowing along the convex portion of the valve as it leaves the compression chamber of the compressor.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: July 15, 2003
    Assignee: Carrier Corporation
    Inventor: Paul J. Bushnell
  • Patent number: 6579075
    Abstract: A compressor for refrigeration cycles, which is provided with a noise attenuation structure on the interior wall of the discharge plenum, is disclosed. In the compressor of this invention, a valve seat is covered with a head cover at its top to form a discharge plenum between the valve seat and the head cover. This discharge plenum temporarily stores a pressurized working fluid therein. The valve seat has a fluid inlet used for allowing an introduction of the pressurized working fluid into the discharge plenum, and a fluid outlet used for discharging the pressurized working fluid from the discharge plenum. A control valve is mounted to the valve seat so as to control the fluid inlet. A plurality of micro-projections are provided on the interior wall of the discharge plenum for absorbing and attenuating impact waves of the working fluid during an introduction of the working fluid into the discharge plenum, thus attenuating operational noises and vibrations caused by the impact waves.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: June 17, 2003
    Assignee: LG Electronics Inc.
    Inventors: In Seop Lee, Sang Heon Yoon
  • Patent number: 6454545
    Abstract: In the present compressor, a retainer is prevented from being deformed without impairing the sealing performance of a metal gasket provided between a covering member for closing a compression chamber of a cylinder block assembly and a discharge valve forming plate. A discharge valve forming plate is provided between a valve plate having at least one discharge port through which a fluid compressed in a compression chamber of a cylinder block assembly is discharged into a discharge chamber of a housing and the cylinder block assembly. A retainer for restricting the magnitude of opening of a discharge valve is integrally formed in a metal gasket which is provided between the discharge valve forming plate and the housing. The housing is provided with a restricting section at a position corresponding to a proximal portion of a rising portion of the retainer for restricting the proximal portion of the top surface of a rising portion.
    Type: Grant
    Filed: November 18, 1997
    Date of Patent: September 24, 2002
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Hayato Ikeda, Noriyuki Shintoku, Tomohiro Wakita, Keishi Nakagaki
  • Patent number: 6273463
    Abstract: An energy absorbing airbag system includes one or more vent valve assemblies for controlling the release of airbag inflation gases to maintain inflation gas pressure within an airbag at a substantially constant pressure during a ride-down of an energy absorbing event. Each vent valve assembly includes a cantilever spring that is flat in an unstressed condition and that has a free end portion. The cantilever spring is secured to an exterior surface of the airbag housing and flexed to cause the second free end portion of the cantilever spring to be pressed, with a preset force, against a vent port or a closure covering the vent port to seal the vent port until inflation gas pressure within the airbag reaches a preselected value determined by the preset force whereupon the free end portion of the cantilever spring is lifted from the vent port by the inflation gases within the airbag to vent the inflation gases from within the airbag.
    Type: Grant
    Filed: April 19, 2000
    Date of Patent: August 14, 2001
    Inventors: Leslie D. Peterson, Richard E. Zimmermann
  • Publication number: 20010008609
    Abstract: In a reciprocating compressor in which a suction valve (21) of a leaf valve is placed between a valve plate (16) and a cylinder block (12) to open and close a suction port (18) formed in the valve plate, the suction valve is previously bent to open the suction port in an initial state when the compressor is stopped. The cylinder block has a cylinder bore (11) with which the suction port is communicated and into which a piston (17) is inserted. When the piston performs reciprocating movement in the cylinder bore, the suction valve opens and closes the suction port in response to the reciprocating movement in a pulsation reducing manner.
    Type: Application
    Filed: January 16, 2001
    Publication date: July 19, 2001
    Inventors: Kenji Hashimoto, Yoshito Matsumura, Yoshinobu Ichikawa, Taizo Sato
  • Patent number: 6012489
    Abstract: An improved valve mounting assembly for a hermetically sealed compressor. The valve mounting assembly includes a valve, a damper, and a retention yoke. The valve, valve damper, and retention yoke cooperate to provide a valve mounting arrangement having high efficiency and low noise. The retention yoke includes an extension which is received between a yoke attachment and a valve plate. The extension is formed from a vibration attenuating material and reduces the communication of vibrations from the valve and valve plate to the yoke attachment. The retention yoke retains the valve and damper in position, and serves as a bumper to back up the damper and limit movement of the damper and valve.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: January 11, 2000
    Assignee: Electrolux Espana, S.A.
    Inventors: Manuel Escriba Rene, Juan Angulo Gomez
  • Patent number: 6006786
    Abstract: A discharge valve assembly for use in a fluid displacement apparatus having a suction chamber and a compression chamber on one side of a valve plate, a discharge chamber on the other side of said valve plate, and a passage which is formed in the valve plate extending between said compression chamber and the discharge chamber and has an open end through which discharge fluid flows. The discharge valve assembly comprises an elastic valve member disposed on the valve plate. One end of the valve member is secured to the valve plate. The elastic valve member is capable of bending to open and close the passage. A stabilizing device is disposed on the elastic valve member for stabilizing movement of the elastic valve member.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: December 28, 1999
    Assignee: Sanden Corporation
    Inventor: Shigeru Ito
  • Patent number: 6006785
    Abstract: A suction valve for an axial piston compressor has a leaf spring fixed at one end, which spring at one end is fixed with a fixed portion between valve plate and cylinder block, at its other end covers over the suction valve opening with a closure portion and has an intermediate portion connecting these portions. The intermediate portion is located substantially outside the cylinder cross-section. A stop for the suction valve leaf spring is arranged in the region of the cylinder wall facing the fixed portion. This produces an optimum filling of the cylinder and thus an improvement in the efficiency of the compressor, as is especially desirable for refrigeration compressors.
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: December 28, 1999
    Assignee: Danfoss Compressors GmbH
    Inventor: Frank Holm Iversen
  • Patent number: 5934305
    Abstract: A reciprocating compressor includes a compression chamber in which a piston compresses gas, the gas being discharged through a discharge hole that is normally closed by a valve assembly. The valve assembly includes a valve plate on which one end of a discharge valve is anchored. The discharge valve includes an elastically flexible portion for covering the discharge hole. A stopper valve is positioned behind the discharge valve for limiting the extent of movement of the discharge valve. A keeper member is disposed behind the stopper valve to retain the stopper valve and discharge valve in place. One end of the keeper member is fixed to the valve plate by a pin, and the other end of the keeper member is fixed to the valve plate solely by a pressing force of a cylinder head.
    Type: Grant
    Filed: June 19, 1998
    Date of Patent: August 10, 1999
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jung-Chang Cho
  • Patent number: 5909749
    Abstract: A valve apparatus of a hermetic type compressor enables an easy mounting of an exhaust valve and a valve spring to an accurate position within a reentrant groove formed in a cylinder head, decreases the number of elements of the valve apparatus to facilitate the assembly and reduces a dead volume to enhance efficiency of the compressor. The valve apparatus includes a cylinder head having a reentrant groove with an exhaust hole, the exhaust valve installed to be opened/closed on the upper surface of the exhaust hole, the valve spring in contact with an upper surface of the exhaust valve, a head cover and a packing interposing between the cylinder head and head cover for preventing a leakage of the refrigerant gas.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: June 8, 1999
    Assignee: LG Electronics, Inc.
    Inventors: Un Seop Lee, Jae Seog Oh, Kyoung Sig Tark, Won Sik Oh, Hyeong Seok Kim, Sang Min Lee
  • Patent number: 5887622
    Abstract: A valve assembly is comprised of a valve plate 35, a discharge valve 34, a backing valve 33, and a stopper 31. A first fixed member 34H of the discharge valve 34 and second fixed member 33H of the backing spring 33 have a first slot 43 and a second slot 42 for receiving a projection 44 formed on the supporting surface 37S, respectively. The stopper 31 comprises a first pressing member 31H which enables the first fixed member 34H of the discharge valve 34 and second fixed member 33H of the backing spring 33 to be pressed in a supporting surface 37S of the accommodating space 37. The embossing portion 36 is pressed by the lower surface of the valve plate 101.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: March 30, 1999
    Assignee: Daewoo Electronics Co., Ltd.
    Inventor: Chi-Young Ahn
  • Patent number: 5875819
    Abstract: An improved discharge valve apparatus for a hermetic compressor which is capable of fixing the retainer based on the elastic force of the elastic protrusions formed in the retainer itself and the shape of the head cover engaged with the retainer, for thus reducing the number of parts and the number of processes. The apparatus includes a head cover, a head engaged with the head cover and having a groove formed in an upper surface of the head, a discharge valve inserted into the groove of the head, a valve spring inserted into the groove of the head for limiting a movement of the discharge valve, and placed on an upper surface of the discharge valve, and a retainer inserted into the groove, and positioned on an upper portion of the valve spring, and having elastic protrusions formed at both sides thereof.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: March 2, 1999
    Assignee: LG Electronics, Inc.
    Inventor: Jae Moon Hwang
  • Patent number: 5823870
    Abstract: An apparatus used with a vehicle one way ventilation exhaust valve with a plurality of flexible flaps is provided comprising a retainer with a frame and a plurality of flap retention members connected across U-shaped members attached to the frame such that when the apparatus is positioned proximate the valve, the retention members bias the flaps in the closed direction to prevent excessive movement of the flaps.
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: October 20, 1998
    Assignee: Chrysler Corporation
    Inventors: Sandy J. Emerling, Keith Potter
  • Patent number: 5775887
    Abstract: A hermetic type compressor which makes opening and closing of a exhaust valve installed inside a reentrant groove formed in a cylinder head smooth, and prevents leakage of refrigerant from the exhaust valve by fabricating a valve seat surface to be in the same height as that of a valve fixing surface.
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: July 7, 1998
    Assignee: L. G. Electronics Inc.
    Inventors: Jae Sang Park, Jae Mun Hwang
  • Patent number: 5769126
    Abstract: A reciprocating compressor includes a compression chamber in which a piston compresses gas, the gas being discharged through a discharge hole that is normally closed by a valve assembly. The valve assembly includes a valve plate on which one end of a discharge valve is anchored. The discharge valve includes an elastically flexible portion for covering the discharge hole. A stopper valve is positioned behind the discharge valve for limiting the extent of movement of the discharge valve. A keeper member is disposed behind the stopper valve to retain the stopper valve and discharge valve in place. One end of the keeper member is fixed to the valve plate by a pin, and the other end of the keeper member is fixed to the valve plate solely by a pressing force of a cylinder head.
    Type: Grant
    Filed: September 12, 1996
    Date of Patent: June 23, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jung-Chang Cho
  • Patent number: 5676533
    Abstract: A hermetic type compressor which makes opening and closing of a exhaust valve installed inside a reentrant groove formed in a cylinder head smooth, and prevents leakage of refrigerant from the exhaust valve by fabricating a valve seat surface to be in the same height as that of a valve fixing surface.
    Type: Grant
    Filed: April 12, 1996
    Date of Patent: October 14, 1997
    Assignee: LG Electronics Inc.
    Inventors: Jae Sang Park, Jae Mun Hwang
  • Patent number: 5647395
    Abstract: A discharge valve assembly for use in a fluid displacement apparatus has a suction chamber and a discharge chamber on one side of a valve plate, a compression chamber on the other side of the valve plate and a passage formed in the valve plate extending between the compression chamber and the discharge chamber. The discharge valve assembly comprises a valve limiting device secured to the valve plate for limiting the bending movement of a valve member. The valve member is bent away from the valve plate when all external pressure influences are removed. Noise and vibration caused by the striking of the valve member against the valve seat and the retainer member are thereby decreased.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: July 15, 1997
    Assignee: Sanden Corporation
    Inventors: Kenji Hashimoto, Atsushi Mabe
  • Patent number: 5601118
    Abstract: A compressor for compressing a refrigerant includes a discharge outlet, and a valve mechanism for controlling the opening and closing of the outlet. The valve mechanism comprises a reed normally biased to an outlet-closing position by a leaf spring which is yieldable under the pressure of compressed refrigerant applied to the reed to enable the reed to flex and open the outlet. A fixed valve stopper overlies the leaf spring for limiting the extent of travel of the leaf spring and reed when opening the outlet. The valve stopper includes a flat inner section spaced above the outlet by a uniform distance, and a convexly curved outer section extending from the flat section to a free end of the stopper. During a valve opening operation, an inner portion of the leaf spring collides with the flat section, but an outer free end of the leaf spring does not collide with the stopper, because of the curvature of the outer section of the stopper. Thus, potential damage to the outer end of the leaf spring is avoided.
    Type: Grant
    Filed: August 9, 1995
    Date of Patent: February 11, 1997
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Geun-Sik Jang
  • Patent number: 5558508
    Abstract: An elongated recess is provided on one side of a valve plate, and a piston is provided on the other side of the valve plate. Discharge holes are provided through the valve plate at the recess, and a pair of discharge reeds are disposed within the recess to close/open the discharge holes. A spring reed presses against the discharge reeds on sides thereof opposite to the discharge holes to close the discharge holes. A stopper is secured to the valve plate and fixes the spring reed into position. The operation of the discharge reed can be tested by the operation of the discharge reed alone, and refrigerant gas remaining in the discharge holes can be reduced, thereby improving compression efficiency. The two discharge holes are each associated with one of the pair of discharge reeds, thereby preventing over-compression loss.
    Type: Grant
    Filed: October 26, 1993
    Date of Patent: September 24, 1996
    Assignee: Matsushita Refrigeration Company
    Inventors: Hiroshi Sasano, Koshi Hamada, Akihiko Kubota
  • Patent number: 5554016
    Abstract: A hermetic compressor for use in refrigeration systems is provided. The hermetic compressor includes a compressor unit disposed within an enclosed compressor casing. The compressor unit has a compression chamber and a valve assembly having an inlet port arranged to introduce refrigerant into the compression chamber and an outlet port for discharging the refrigerant compressed in the compression chamber. The valve assembly includes a valve plate, a single outlet reed valve, and a spring member. The valve plate has formed therein a recessed portion in which the outlet port is formed. The outlet reed valve has a supporting portion and a valve portion for selectively opening and closing the outlet port according to a pressure level of the refrigerant compressed in the compression chamber. The recessed portion has protrusions to define an outlet reed valve housing in which the supporting portion of the valve portion of the outlet reed valve is secured.
    Type: Grant
    Filed: October 24, 1994
    Date of Patent: September 10, 1996
    Assignee: Matsushita Refrigeration Company
    Inventors: Hiroshi Sasano, Masao Mangyo, Koshi Hamada, Akihiko Kubota
  • Patent number: 5209260
    Abstract: A valve unit for a hermetic reciprocating compressor comprises a valve plate adapted to be attached to the end of a piston cylinder. A discharge passage is formed through the valve plate, and a valve assembly is mounted within a stepped recess formed in an outer side of the valve plate for opening and closing the discharge passage. The outlet end of the discharge passage is situated within the recess and is spaced inwardly from the outer side so that the length, and hence the volume, of the discharge passage is reduced. Hence, the amount of compressed gas remaining in the discharge passage at the end of a piston stroke is correspondingly reduced, so that a vacuum can be formed in the piston chamber more quickly as the piston is retracted.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: May 11, 1993
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Chung-Guk Baek
  • Patent number: 5178183
    Abstract: A discharge valve for a compressor includes a valve plate having a recessed portion formed around a discharge port with a valve seat. A channel having a raised bottom surface is formed at the recessed portion. A valve reed is positioned at the recessed portion, having a circular portion for engaging with the valve seat and a base portion supported on the raised bottom surface of the channel. A valve spring is resiliently mounted over the valve reed to hold the valve reed. The valve spring has an inwardly bent section for press-contacting with the valve reed and an outwardly bowed section with a bent tip, which is resiliently deformable for adapting to the opening movement of the valve reed.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: January 12, 1993
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Ju H. Kim
  • Patent number: 5110272
    Abstract: The valve unit includes a valve plate fitted to a head end of the cylinder of the compressor and having a valve-controlled intake part and an exhaust port surrounded by an annular seat formed in an opposite face of the plate from that which faces the cylinder, an exhaust valve reed associated with the seat, and a limit device fixed to the plate for limiting the travel of the exhaust reed. The exhaust reed includes a base portion which is restrained on the plate, an obturating head portion spaced from the base portion and cooperating with the seat, and an elongate portion connected the base and head portions. The connecting portion is "L"-shaped in plan with the head portion situated at the end of the leg of the "L" and the base portion situated at the end of the foot of the "L". The foot of the "L" is free to bend with the leg of the "L".
    Type: Grant
    Filed: February 7, 1991
    Date of Patent: May 5, 1992
    Assignee: Aspera S.r.l.
    Inventors: Federigo Peruzzi, Norbert Andrione
  • Patent number: 5099886
    Abstract: A cantilever leaf spring (1) attached to a fixed frame or movable member of a gas isolator is acted on by a bias spring (2) and an additional similar, but not identical, bias spring (12).
    Type: Grant
    Filed: June 22, 1990
    Date of Patent: March 31, 1992
    Assignee: Grovag Grossventiltechnik AG
    Inventor: Anton F. Squirrell
  • Patent number: 5016669
    Abstract: The valve assembly comprises a body formed of substantially identical, or identical plates, in which one is the mirror-image or reverse of the other. The plates are held apart, in parallel planes, by an enveloping seal. Each plate is ported for the conduct of fluid therethrough in cooperation with a fluid-conducting void formed in the confronting plate. Flapper-type valving elements are confined within the body, between the plates. A single, centrally-disposed fastener secures the plates and the assembly together, and constitutes the means for the simple disassembly of the unit.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: May 21, 1991
    Assignee: Dresser-Rand Company
    Inventor: Richard A. Jamieson
  • Patent number: 4723896
    Abstract: A hermetic refrigeration compressor has a flat valve plate closing off a cylinder bore. The valve plate has an elongated recess on the outer side around the discharge port and a discharge valve assembly, comprising a flat reed valve and backing spring, fits within the recess beneath an overlying valve stop which engages the bottom of the recess at each end. The recess, the reed valve, the backing spring, and the valve stop are so configured that they can be assembled only in the correct configuration. The valve stop is held in place by an arcuate retaining spring having ends engaging notches in the valve plate and a projecting boss on a cylinder head defining a discharge valve plenum engages the retaining spring to press the spring and the valve plate into position within the recess to retain all of the parts in operating position.
    Type: Grant
    Filed: April 30, 1987
    Date of Patent: February 9, 1988
    Assignee: White Consolidated Industries, Inc.
    Inventor: Jack F. Fritchman
  • Patent number: 4721130
    Abstract: A valve structure according to the present invention is used for a hydraulic buffer provided with a member for partitioning the interior of a cylinder into two liquid chambers and having a plurality of ports for affording communication between both liquid chambers. The valve structure includes a valve body formed annularly of a leaf spring for opening and closing the ports and secured to the member on an inner peripheral portion thereof, a spring for biasing the valve body toward the member and a spring seat disposed movably between the spring and the valve body and having an abutting portion projecting toward the valve body at a side contacting the valve body. The valve body can flex about an outer peripheral edge of the abutting portion and an outer peripheral edge of the fixed portion.
    Type: Grant
    Filed: December 15, 1986
    Date of Patent: January 26, 1988
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Makoto Hayashi
  • Patent number: RE32651
    Abstract: A pressure valve for a compressor of the hermetically encapsulated type. The valve includes a valve plate with a valve seat and upstanding pins on which at least one catch plate is placed to limit the stroke of a closing member formed by a valve leaf spring. The valve seat is disposed in an elongated depression of the valve plate and the pins are formed on an insert spring into the recess.
    Type: Grant
    Filed: December 13, 1985
    Date of Patent: April 26, 1988
    Assignee: Danfoss A/S
    Inventor: Bendt W. Romer