Elastomeric Spring Patents (Class 267/219)
-
Patent number: 6702264Abstract: A hydraulic antivibration mounting comprises: an inner strength member; a cage comprising a tubular wall and a flange extending radially outwards from the tubular wall; a cylindrical outer strength member in which the cage is received and having a shoulder and a collar, the shoulder defining a channel filled with damping liquid and the collar being crimped directly to the flange; and an elastomer body connected to the inner strength member and to the cage and forming a sealing gasket for the channel between the collar and the flange.Type: GrantFiled: January 29, 2003Date of Patent: March 9, 2004Assignee: HutchinsonInventors: Paul Mellon, Daniel Le Guillant
-
Patent number: 6685175Abstract: The invention provides a liquid-sealed vibration-proof device, whose partition is constituted of and shaped separately by an orifice member having an orifice channel, a partition plate member forcing its outer periphery toward an outer peripheral end of a vibration-proof base on the liquid chamber side, and a second diaphragm closing a central opening of the orifice member. A recessed groove of a marginal portion of the second diaphragm is press-fitted in and engaged with a hook portion projecting inwardly of the orifice member, and a bottom wall of the recessed groove is pinched and pressed by the hook portion and the partition plate member, whereby the assembling is facilitated, ensuring a reliability and functionality of a product.Type: GrantFiled: February 8, 2002Date of Patent: February 3, 2004Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Yukio Takashima, Hikofumi Yamamoto
-
Publication number: 20040012136Abstract: The present invention relates to a travel-limiting stop device for a motor-vehicle shock absorber. The device is characterized in that the compression stop (2) and the vibration-damping element (8) are disposed within the envelope of the suspension spring (14) in such a way as to limit the total length of the shock absorber (1). The invention is applicable in the motor-vehicle sector.Type: ApplicationFiled: May 30, 2003Publication date: January 22, 2004Inventor: Dominique Marie Mennesson
-
Patent number: 6676117Abstract: A hydraulic vibration-damping support comprising two strength members interconnected by an elastomer body which defines a working chamber communicating with a compensation chamber via a constricted passage. The two hydraulic chambers are separated from each other by a rigid partition formed by two gratings disposed one on the other, and a decoupling flap is mounted with a small amount of clearance between the gratings. The decoupling flap is provided with two catches that are clipped onto one of the gratings.Type: GrantFiled: October 21, 2002Date of Patent: January 13, 2004Assignee: HutchinsonInventors: Mickaël Desmoulins, Jean-Pierre Monneau
-
Patent number: 6669182Abstract: A fluid-filled vibration-damping device including an elastic body elastically connecting a first and a second mounting member to fluid-tightly close one open-end of the second mounting member, and mutually assembled a movable rubber plate bonded to a first support member and a flexible rubber layer bonded to a second support member are fluid-tightly fixed to the other open-end of the second mounting member by caulking such that the movable rubber plate cooperate with the elastic body to form a primary fluid chamber and the movable rubber plate and the flexible rubber layer cooperate to form an auxiliary fluid chamber, which are filled with a non-compressible fluid and connected together through an orifice passage.Type: GrantFiled: March 20, 2002Date of Patent: December 30, 2003Assignee: Tokai Rubber Industries, Ltd.Inventors: Satoru Hibi, Mitsuhiro Takayanagi
-
Patent number: 6669181Abstract: The vibration isolating apparatus includes, an outer tube, an inner tube disposed at an inner peripheral side of the outer tube, an elastic body disposed between the outer tube and the inner tube, a main fluid chamber which contains a fluid with the elastic body serving as a portion of a partitioning wall of the main fluid chamber and whose internal volume changes due to deformation of the elastic body, a first auxiliary fluid chamber which contains a fluid and a portion of a partitioning wall of the first auxiliary fluid chamber is formed by a diaphragm so as to expand and contract a space between the first auxiliary fluid chamber and the outer tube, a first passage which communicates the main fluid chamber and the first auxiliary fluid chamber, and a second passage which communicates the main fluid chamber and the first auxiliary fluid chamber.Type: GrantFiled: April 16, 2002Date of Patent: December 30, 2003Assignees: Bridgestone Corporation, Nissan Motor Co., Ltd.Inventors: Katsumi Someya, Shigeki Okai
-
Publication number: 20030227118Abstract: A mount assembly for connecting a damper rod to a motor vehicle tower comprises a mount housing, a nut, and a resilient cushion. The mount housing has a vertical portion extending through an opening in the tower, and a flange disposed on one side of the tower. The nut is disposed on a side of the tower opposite the one side, and is engaged with the vertical portion of the mount housing. The resilient cushion is disposed within the vertical portion of the mount housing, the damper rod extending through the resilient cushion assembly. A spring engaged with the tower is adapted to transfer loads from the motor vehicle to the tower.Type: ApplicationFiled: June 6, 2002Publication date: December 11, 2003Applicant: DELPHI TECHNOLOGIES INC.Inventor: George A. LaBeau
-
Patent number: 6655669Abstract: Disclosed is a hydraulic strut mounting assembly including a plurality of chambers formed within a strut mount, in which the chambers are communicated with each other and are filled with hydraulic fluid for supplying a hydraulic pressure, thereby reinforcing capability of a shock absorber and a coil spring and thus further improving a ride quality of a vehicle. The hydraulic strut mounting assembly comprises a strut mount coupled to a shock absorber, a decoupler provided across an interior space of the strut mount, an upper and lower chamber formed in the strut mount by the decoupler, an orifice communicating the upper chamber with the lower chamber, a fluid filled within the lower chamber, and a plunger for pressurizing the fluid in line with the shock absorber when a vibration is generated.Type: GrantFiled: August 8, 2002Date of Patent: December 2, 2003Assignee: Kia Motors CorporationInventor: Si-Seob Jung
-
Patent number: 6644635Abstract: A hydraulically damping elastomeric bearing is suitable for mountings in a motor vehicle. The elastomeric bearing includes an elastic bearing part which is arranged between a sleeve-shaped outer part and an inner part coaxial thereto and which connects these elastically to one another. At least two chambers, which are filled with a liquid damping medium, communicate with one another via at least one throttle duct. Four chambers are provided, which are arranged in one plane, the four chambers each being arranged in one of four quadrants which are formed by two intersecting axes arranged in the plane, and at least two throttle ducts being provided.Type: GrantFiled: July 18, 2001Date of Patent: November 11, 2003Assignee: DaimlerChrysler AGInventors: Thorsten Breitfeld, Klaus-Thomas Hettich, Bernd Koeder
-
Patent number: 6641121Abstract: A damping structure for providing damping and vibration attenuation includes an intermediate steel sheet positioned between an upper steel sheet and a lower steel sheet. The structure is incorporated as a part of a suspension component. The intermediate sheet is perforated with a plurality of holes, and a plurality of elastic strips are positioned between each of the sheets when assembled. The edges of the sheets are welded, sealing viscous fluid within the structure. Alternatively, the structure can be secured by rivets. Compression on the damping structure moves the fluid through the holes, providing a damping effect.Type: GrantFiled: January 3, 2002Date of Patent: November 4, 2003Assignee: Meritor Light Vehicle Technology, LLCInventors: Robert P. Carlstedt, Daniel Eugene Whitney, Mark C. Smith, Eric Stephen Geib, Steven M. Foster, Richard M. Clisch, Shan Shih, Juan Jose Marcos Munoz
-
Patent number: 6631893Abstract: A pneumatically regulated classic bearing dampens hydraulically and decouples vibrations of a small amplitude using a freely displaceable element. The bearing can be engaged using a pneumatically activated control chamber, which has a miniature configuration and is located beneath the freely displaceable element, in such a way that the element forms a deformable or displaceable element for the control chamber. In place of a compensation regulation, in the control chamber, a shift to one of three possible, pneumatically determined control states preferably takes place. The states are VENTILATED, CLOSED and PRESSURIZED.Type: GrantFiled: November 13, 2001Date of Patent: October 14, 2003Assignee: Woco Franz-Josef Wolf & Co.Inventors: Waldemar Hermann, Volker Grünig
-
Patent number: 6612554Abstract: Disclosed is a hydraulic antivibration mount. The mount has an annular rubber spring et in an outer metal casing, encasing an inner metal portion having a central mounting means. The outer metal casing is crimped over the flange of an end cap. Located with the end cap and retained within the crimped portion is a flexible diaphragm. Also retained within the crimped portion is a damper plate dividing the interior of the mount into an upper chamber A and a lower chamber B to be filled with fluid. The damper plate is formed from an upper plate and a lower plate. The upper and lower plates form a flow channel between the two plates which extends at least partially around the circumference of the damper plate, the flow channel permitting communication between the upper and lower chamber. The upper plate has an opening communicating to the upper chamber with an integral tab extending from the opening into the flow channel to block the channel.Type: GrantFiled: October 24, 2001Date of Patent: September 2, 2003Assignee: The Goodyear Tire & Rubber CompanyInventor: Matthew Allen Linn
-
Publication number: 20030151178Abstract: A hydraulically damping bush bearing is presented, in which an inner rubber mount, which comprises an essentially cylindrical or nearly cylindrical inner part (1) with an axial through hole (2), an outer sleeve (3) surrounding the inner part (1) as well as an elastomeric damping member (4), which is arranged between the inner part (1) and the outer sleeve (3) and is connected to them by vulcanization, is surrounded at its axial ends by chambers (5, 5′) for receiving a fluid damping agent, wherein the chambers (5, 5′) are formed by a hydraulic area, which is arranged separately around the rubber mount and which comprises a rigid channel carrier (6) pushed over the outer sleeve (3) of the rubber mount with a channel (7) for the flow-conducting connection of the chambers (5, 5′), an outer bush (8) supported axially on the channel carrier, and means (9, 9′) arranged axially on both sides of the rubber mount for closing the bush bearing, wherein the means (9, 9′) consist in their radiType: ApplicationFiled: December 10, 2002Publication date: August 14, 2003Inventors: Andreas Vossel, Andreas Rodenberg
-
Publication number: 20030146555Abstract: A hydraulic antivibration mounting comprises:Type: ApplicationFiled: January 29, 2003Publication date: August 7, 2003Inventors: Paul Mellon, Daniel Le Guillant
-
Patent number: 6598863Abstract: A fluid-filled cylindrical elastic mount having an inner sleeve and an outer sleeve, and an elastic body interposed therebetween. The elastic mount also has a intermediate sleeve having a plurality of windows through which a plurality of pockets formed at respective circumferential positions of the elastic body are open in the outer circumferential surface of the intermediate sleeve, respectively. The plurality of windows are fluid-tightly closed by the outer sleeve, thereby defining a plurality of fluid chambers filled with a non-compressible fluid. The elastic mount further includes an orifice member for defining an orifice passage for fluid communication between the plurality of fluid chambers.Type: GrantFiled: January 5, 2001Date of Patent: July 29, 2003Assignee: Tokai Rubber Industries, Ltd.Inventor: Kazuhiko Kato
-
Publication number: 20030137091Abstract: The invention concerns a suspension stop device, for a motor vehicle driving wheels, comprising a filtering block, consisting of an upper housing fixed relative to the vehicle body and co-operating with a lower housing mobile in rotation about a shock absorber rod and supporting a suspension spring, and a ball bearing. Said upper (21) and lower (23) housings are made of thermoplastic material and have opposite surfaces hollowed out in a circle, about the rotation axis (d) of the shock absorber rod (24), to receive a raceway for the ball bearing (22). The upper housing (21) further incorporates an impact stop (42) moulded around the leading stop (41) of the shock absorbing device, and the thermoplastic structure of the upper housing (21)is reinforced by a ring (45) made of overmoulded elastomer.Type: ApplicationFiled: December 2, 2002Publication date: July 24, 2003Inventor: Jean Chesne
-
Publication number: 20030127788Abstract: An hydraulic damping mount has an outer sleeve, an inner sleeve for securing thereto a piston of a spring strut (activatable in at least one direction), an elastomeric body and two chambers. The two chambers are interconnected via a gap. The inner sleeve comprises a radially projecting boss separating the two chambers from each other. The connection between the two chambers is configured in accordance with the invention as a gap between the boss and the outer sleeve so that when activated, the fluid flow through the gap is in the direction opposite to the movement of the boss, resulting in a reduction in the stiffness. This simplifies assembly whilst enhancing the stiffness response of the mount. The invention relates furthermore to a mount for supporting a spring strut in making use of such a mount.Type: ApplicationFiled: February 14, 2003Publication date: July 10, 2003Inventor: Arndt Graeve
-
Patent number: 6585222Abstract: In a vibration isolator wherein an inner and an outer cylindrical fittings are connected by a rubber elastomer between both fittings; in the rubber elastomer above and below the inner cylindrical fitting, hollow spaces are formed circumferentially in a larger width, in a cross-section square to the axial direction, than an outside diameter of the inner cylindrical fitting; and lateral portions as support arms of the rubber elastomer between the hollow spaces support the inner cylindrical fitting to the outer cylindrical fitting, in order to lower the dynamic spring rate in the lateral direction square to the axial direction and facilitate the tuning of rigidity, without changing the vibration-isolating characteristics in the vertical direction and without deteriorating the durability, small vacancies are provided in the lateral portions at a distant position inboard from the outer cylindrical fitting.Type: GrantFiled: August 28, 2001Date of Patent: July 1, 2003Assignee: Toyo Tire and Rubber Co. Ltd.Inventors: Yoshio Ihara, Hironori Kato
-
Patent number: 6572088Abstract: This invention provides, in a vibration isolating bushing comprising an inner and an outer cylinders cencentrically spaced apart and a rubber elastomer interconnecting both cylinders by vulcanization forming, such that it is possible to ensure sufficiently a forcing allowance of the outer cylinder when press fitted to a support member, to improve the workability upon assembling, and to avoid the outer cylinder from releasing and dropping off from the inner cylinder even if the rubber elastomer is ruptured. According to its expedient, the inner cylinder is formed at its axial extremities with outwardly upset portions, the outer cylinder is formed at its one axial extremity with a flange portion having a larger diameter than an outside diameter of the upset portion, and an inside diameter of the extremity of the outer cylinder is made smaller than the outside diameter of the upset portion.Type: GrantFiled: August 22, 2001Date of Patent: June 3, 2003Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Hideo Tadano, Masanao Kameda
-
Patent number: 6561501Abstract: A hydraulic antivibration sleeve comprising two constrictive strength members interconnected by an elastomer body which defines first and second diametrically opposite working chambers and a side compensation chamber. The two working chambers communicate with each other via a constricted passage, while the compensation chamber communicates with the first working chamber only via another constricted passage. The elastomer wall which defines the second working chamber is free and is not in contact with the inner strength member except in a certain range of values for the radial static load supported by the sleeve: this provides two different modes of operation depending on the value of said static load.Type: GrantFiled: July 24, 2001Date of Patent: May 13, 2003Assignee: HutchinsonInventors: Bernard Bouhier, Frédéric Seibert-Sandt
-
Patent number: 6557838Abstract: A hydraulic engine mount includes a bushing assembly having a core bonded to an inner support structure by an elastomeric material. The inner support structure includes a first ring, a second ring, and a plurality of legs. The first ring includes an annular wall, an outer end wall, and an inner end wall. The second ring includes an annular wall, an outer end wall, and an inner end wall. The legs are integrally formed with and between the first and second rings, so that the first ring, the second ring, and the legs are formed as a one-piece component that does not require a post-forming operation. A housing receives the bushing assembly. Fluid chambers are formed between the bushing assembly and the housing to dampen vibrations as hydraulic fluid is displaced between the chambers.Type: GrantFiled: November 30, 2001Date of Patent: May 6, 2003Assignee: Freudenberg-NOK General PartnershipInventor: Todd Michael Wirges
-
Publication number: 20030080482Abstract: A hydraulic vibration-damping support comprising two strength members interconnected by an elastomer body which defines a working chamber communicating with a compensation chamber via a constricted passage. The two hydraulic chambers are separated from each other by a rigid partition formed by two gratings disposed one on the other, and a decoupling flap is mounted with a small amount of clearance between the gratings. The decoupling flap is provided with two catches that are clipped onto one of the gratings.Type: ApplicationFiled: October 21, 2002Publication date: May 1, 2003Inventors: Mickael Desmoulins, Jean-Pierre Monneau
-
Patent number: 6550753Abstract: The invention provides an antivibration device lightweight and excellent in heat interception, wherein a top opening of a main body fitting (1) and an upper attachment fitting (2) are interconnected through a vibration-isolating base (3); a stopper fitting (8) of a generally cylinder form partly cutout is connected to the main body fitting (1) with its upper edge bent inwardly to form a stopper portion (81), which is located above a stop flange (22) of the upper attachment fitting (2) and has a stopper function against a large vertical displacement; a stopper rubber member (15) is fitted to the stopper fitting (8) so as to extend from the upper surface of the stopper portion (81) to an outer surface of its side plate by vulcanization molding; the cutout portion (83) of the stopper fitting (8) is plugged by a heat shield rubber membrane portion (17) vulcanization molded integrally with the stopper rubber member (15).Type: GrantFiled: November 21, 2001Date of Patent: April 22, 2003Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Yukio Takashima, Toshihiro Kakimoto, Hikofumi Yamamoto
-
Patent number: 6540215Abstract: The present invention aims at providing a liquid sealed type vibration isolator capable of positioning a partition excellently with the construction of the partition simplified, and maintaining stable damping characteristics of an orifice. To meet the requirements, an outer circumferential portion of the partition forming the orifice is made so that the outer circumferential portion defines at least a part of one or two sides of a cross section of the orifice, and a positioning device formed of a partition press fitting or inserting structure with respect to a groove, or a partition engaging structure is provided in a joint portion between the partition and the other orifice forming member with the construction of the partition simplified, whereby it is rendered possible to improve the accuracy of the partition and obtain a desired cross section of the orifice.Type: GrantFiled: September 7, 2001Date of Patent: April 1, 2003Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Masashi Takaoka, Yukio Takashima, Tsutomu Hashimoto
-
Patent number: 6533221Abstract: The invention concerns a launch vehicle comprising a shroud (1a, 5a) supporting auxiliary propellers (2, 3) applying in operation excess flow of stresses to the shroud (1a, 5a), said device comprising means for coupling the payload (4) with the launch vehicle shroud. The invention is characterized in that the coupling means are designed to ensure a mechanical coupling between the payload (4) and the shroud along the direction of the launch vehicle longitudinal axis (X), and to cause them to be disengaged along radial and tangential directions. The invention is useful for neutralizing the effects on the payload of excess stresses applied on the launch vehicle shroud by the auxiliary propellers (2, 3).Type: GrantFiled: October 5, 2001Date of Patent: March 18, 2003Assignee: Centre National d'Etudes SpatialesInventor: Pascal Hubert
-
Publication number: 20030038414Abstract: A hydraulic vibration-damping support comprising two strength members interconnected by an elastomer body defining in part a working chamber filled with liquid, said working chamber communicating via a constricted passage with a compensation chamber separated from said working chamber by a rigid partition. The constricted passage is made up of two stages defined by two pieces of sheet metal forming the rigid partition.Type: ApplicationFiled: July 30, 2002Publication date: February 27, 2003Inventors: Thierry Pizanti, Loic Collet
-
Patent number: 6523815Abstract: A liquid-filled vibration-proof device constructed so that the positioning and supporting function of a partition is performed firmly and a port opening of an orifice passage in the partition is not obstructed to ensure a sufficient opening area of the port opening. To that end, a diaphragm and a partition located inwardly thereof are hermetically fixed to a cylindrical fitting at a side opposing a vibration-isolating base thereby partitioning an enclosure between the vibration-isolating base and the diaphragm into two liquid chambers, the both liquid chambers being put in communication with each other through the orifice passage; the vibration-isolating base is provided at a marginal part of its inner face with protruding portions for positioning, with which an upper marginal portion of the partition is in opposed contact, disposed circumferentially at intervals at plural positions so as not to impede the flow of the port opening.Type: GrantFiled: February 12, 2002Date of Patent: February 25, 2003Assignee: Toyo Tire & Rubber Co., Ltd.Inventor: Kentaro Yamamoto
-
Publication number: 20030025257Abstract: Mount for a piston-cylinder assembly, especially for a vibration damper, where one end of the piston rod is immovably connected to upper and lower flanges of the mount. A radial, ring-shaped space is formed at least at the lower support flange of the mount, and an elastomeric body is clamped between the lower support flange and the upper support flange, this body being connected to the component to be damped. A support body, which is connected immovably to the support flange and immovably to the piston rod, is provided in the ring-shaped space to absorb the support forces acting on the support flange.Type: ApplicationFiled: August 2, 2002Publication date: February 6, 2003Applicant: ZF Sachs AGInventor: Gunther Handke
-
Patent number: 6511058Abstract: A hydraulically damping rubber is provided with an uncoupling element. The bearing has an elastomer arranged between an essentially cylindrical inner part and a cylindrical outer sleeve and connected to the inner part by vulcanization. The hydraulically damping rubber bearing has chambers for receiving a damping agent. The chambers are connected by at least one channel arranged in a channel carrier. The uncoupling element is provided for uncoupling the damping action caused by the circulation of the damping agent in the channel or channels against forces of low exciting amplitude introduced into the bearing. The uncoupling element is a separate component from the hydraulically damping rubber bearing, arranged in a recess in a channel carrier space of the bearing.Type: GrantFiled: June 5, 2001Date of Patent: January 28, 2003Assignee: ZF Lemförder Metallwaren AGInventors: Andreas Vossel, Frank Meyerink
-
Patent number: 6508342Abstract: A damper assembly is provided including a telescopic damper having a piston rod extending from a first end. A mount assembly is mounted on the piston rod. A dust tube is provided the damper assembly including a substantially closed end, the closed end positioned between the telescopic damper and the mount assembly. The closed end of the dust tube includes an opening for receiving the piston rod and a rate surface for contacting a bumper portion of the mount assembly when the damper assembly contracts.Type: GrantFiled: April 6, 2001Date of Patent: January 21, 2003Assignee: Delphi Technologies, Inc.Inventors: Stephen L. Pape, Zbigniew G. Krawiec
-
Patent number: 6478321Abstract: A rubber shear spring assembly for mounting between inner ends of adjacent leaf springs of a tandem axle including a hanger for mounting on a vehicle frame, hanger sides on the hanger, a rubber shear spring assembly between the hanger sides, the rubber shear spring assembly including a central plate and first and second rubber shear springs having inner sides mounted on opposite sides of the central plate and the rubber shear springs having outer sides mounted on the hanger sides, and connector members mounted at opposite ends of the central plate for connection to the inner ends of adjacent leaf springs.Type: GrantFiled: August 2, 2000Date of Patent: November 12, 2002Assignee: MOR/ryde International, Inc.Inventor: David E. Heitzmann
-
Patent number: 6459970Abstract: Control data such as an optimal filter coefficient or the like of an engine mount is obtained by adaptation control or the like with respect to a reference vehicle F provided with a reference engine mount 20k, and the control data is stored in a reference data map storage medium 35 as a reference data map. Mount characteristics of the reference engine mount and a mass-produced engine mount 20m are measured. A correction data map which is a deviation from the reference data map is obtained for the control data of the mass-produced engine mount from a difference between both the mount characteristics, and the correction data map is stored in the correction data map storage medium 36. Both the data map storage media are added to the active control apparatus of the mass-produced vehicle M. Using both the data maps, it is possible to appropriately and actively control the vibration of the mass-produced vehicle without variation.Type: GrantFiled: June 18, 2001Date of Patent: October 1, 2002Assignee: Tokai Rubber Industries, Ltd.Inventors: Katsuhiro Goto, Yoshihiko Hagino, Katsuhisa Yano, Tatsuya Suzuki
-
Patent number: 6454250Abstract: A shock absorbing keypad and shock absorbing gasket for use in connection with a portable computing device.Type: GrantFiled: November 1, 2000Date of Patent: September 24, 2002Assignee: SPX CorporationInventor: Durval S. Ribeiro
-
Patent number: 6454252Abstract: There is provided a difference in dynamic characteristics between one and the other of vibration isolating rubber members which are provided as a pair on left and right sides of an automotive vehicle. This causes a difference &dgr; in phase between vibrations transmitted via the left and right vibration isolating rubber members, and vibrations from the left and right vibration isolating rubber members cancel each other, whereby the vibration of the body of the automotive vehicle can be reduced.Type: GrantFiled: July 23, 2001Date of Patent: September 24, 2002Assignee: Honda Giken Kogyo Kabushiki KaishaInventor: Yasuo Miyamoto
-
Patent number: 6450486Abstract: An outer peripheral portion of an elastic member is formed integrally to a periphery of an inner cylinder that is unconnected and intimately contacted to an inside of the outer cylinder. A partition wall is formed between a main liquid chamber and an auxiliary liquid chamber which are communicated with an orifice passage, and end walls are formed at both ends in an axial direction, whereby they are respectively adjusted to resonate by membrane in medium to high frequency range. Cooperative resonance frequency of the partition wall with the end walls are set in the medium to high frequency range. In the main liquid chamber, a stopper is projected integrally from a main liquid chamber cover which is provided along an interior face of the outer cylinder and liquid column resonance is generated respectively between the partition wall and the end walls.Type: GrantFiled: July 30, 1999Date of Patent: September 17, 2002Assignee: Yamashita Rubber Kabushiki KaishaInventors: Kazutoshi Satori, Yuji Mutoh, Kouji Susa
-
Patent number: 6443438Abstract: A cone-shaped mounting (1) is provided in which a main fluid chamber (10) is formed by a first connecting member (3) a second connecting member (5), an elastic body member (7), a partition member (8) and a first orifice passage (15). A part of an elastic wall of the main fluid chamber (10) is an inner wall of the elastic body member (7). The first orifice (15) communicates with a sub-fluid chamber (11). An input direction of a main vibration is arranged to be the Z-axis direction (the vertical direction of a car body). Side fluid chambers (20) and recessed chambers (25) are alternately provided at intervals of 90° in the circumferential direction on the outer circumference of the elastic body member (7). An outer wall of the elastic body member (7) forms a part of an elastic wall of the side fluid chambers (20). A pair of side fluid chambers (20) is disposed in the longitudinal direction of the car body.Type: GrantFiled: December 28, 2000Date of Patent: September 3, 2002Assignee: Yamashita Rubber Kabushiki KaishaInventors: Kazutoshi Satori, Toru Sakamoto
-
Patent number: 6439554Abstract: There is provided a switchable liquid-filled vibration isolating mount that damps each of shaking vibration and idling vibration by opening and closing an orifice, and that maintain a stable and reliable operation for a long period. First and second fixtures are joined together by a vibration isolating base body to form an inner space defined thereby. This inner space is partitioned by a partitioner and first and second diaphragms to form main and sub-liquid chambers that are communicating with each other via inner and outer orifices. A space between the first and second diaphragms is an equilibrium chamber. A space between the second diaphragm and second fixture is a switching chamber into which either of an atmospheric pressure and a reduced pressure is selectively introduced. The inner orifice is an opening of the partitioner. The first diaphragm has in its central portion a valve body that has a projection always inserted in the inner orifice all the time the orifice is opened or occluded.Type: GrantFiled: March 16, 2000Date of Patent: August 27, 2002Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Yukio Takashima, Masashi Takaoka
-
Patent number: 6439555Abstract: A vibration-isolating apparatus and a metal stopper having an excellent and lasting reliability comprises an outwardly projecting stopper rubber, and a metal stopper fixed to a first fixture so as to surround the stopper rubber. The metal stopper has a first contact surface in parallel with a compression-direction-facing surface of the stopper rubber, a second contact surface in parallel with a radial-direction-facing surface of the stopper rubber and a third contact surface in parallel with a drawing-direction-facing surface of the stopper rubber, and a fourth contact surface in parallel with a circumferential-direction-facing surface of the stopper rubber. The third contact surface inclines at an angle range of 10°-50° with respect to a plane perpendicular to the compression and drawing directions, while an inner edge of the third contact surface projects radially inward from the second contact surface by not less than 10 mm so as not to contact with the vibration-isolating base body.Type: GrantFiled: October 12, 2001Date of Patent: August 27, 2002Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Yukio Takashima, Tsutomu Hashimoto
-
Patent number: 6435487Abstract: The present invention aims at providing a liquid sealed type vibration isolator capable of positioning a partition excellently with the construction of the partition simplified, and maintaining stable damping characteristics of an orifice. To meet the requirements, an outer circumferential portion of the partition forming the orifice is made so that the outer circumferential portion defines at least a part of one or two sides of a cross section of the orifice, and a positioning device formed of a partition press fitting or inserting structure with respect to a groove, or a partition engaging structure is provided in a joint portion between the partition and the other orifice forming member with the construction of the partition simplified, whereby it is rendered possible to improve the accuracy of the partition and obtain a desired cross section of the orifice.Type: GrantFiled: June 22, 2000Date of Patent: August 20, 2002Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Masashi Takaoka, Yukio Takashima, Tsutomu Hashimoto
-
Patent number: 6419213Abstract: A liquid-filled vibration isolator includes an inner cylindrical metal member; a cylindrical intermediate metal member disposed outside the inner cylindrical metal member in a substantially coaxial manner and including a pair of ring portions disposed at corresponding axial ends thereof, a pair of connection portions integrally connecting the ring portions, and a pair of window portions defined by the ring portions and the connection portions; a rubber elastic-body connecting the intermediate metal member and the inner cylindrical metal member and having cavity portions corresponding to the window portions; and an outer cylindrical metal member fixedly disposed outside the intermediate metal member and sealed in a liquid-tight manner against the intermediate metal member by means of a rubber seal portion.Type: GrantFiled: March 27, 2001Date of Patent: July 16, 2002Assignee: Tokai Rubber Industries, Ltd.Inventor: Hirotaka Murai
-
Patent number: 6419215Abstract: A bushing is disclosed with a sleeve. The sleeve member has an inner surface and a cavity. A core member is disposed in the cavity. A pair of elastomeric members are disposed in the cavity. One of the pair of elastomeric members is adjacent to the core. The other of the pair of elastomeric members is adjacent to the inner surface. The one of the pair of elastomeric members has a modulus that is greater than the other of the pair of elastomeric members so that one of said pair of elastomeric members absorbs low frequency vibration and the other of the pair of elastomeric members absorbs high frequency vibration.Type: GrantFiled: August 2, 2000Date of Patent: July 16, 2002Assignee: Freudenberg-Nok General PartnershipInventors: David H. Johnson, Patrick T. Kolb
-
Patent number: 6412760Abstract: A liquid-filled type vibration isolator, having a vibration isolation mechanism, formed between first and second coupling members to be mounted to a vehicle body-side member, including: a rubber-like insulator for absorbing and isolating vibrations from the vibration member; a main chamber, whose chamber walls are formed by a portion of the insulator, and which is filled with liquid; a sub-chamber, whose chamber walls are partially formed by a first diaphragm, coupled to the main chamber through a first orifice; a partitioning member for partitioning between the main chamber and the sub-chamber; a second diaphragm for partitioning between a third liquid chamber to be coupled to the main chamber through a second orifice, and a balance chamber into which negative pressure is introduced.Type: GrantFiled: December 27, 2000Date of Patent: July 2, 2002Assignee: Toyoda Gosei Co., Ltd.Inventors: Yoshiki Shimoda, Tetsuo Asano
-
Patent number: 6409158Abstract: A liquid-filled vibration absorbing device including a vibration absorbing base of rubber interposed between a holding cylinder of a lower mounting metal fixture and an upper mounting metal fixture. An annular member is fixed on the outer circumferential portion of the lower portion of the vibration absorbing base. A diaphragm is mounted on the lower end portion of an intermediate cylinder, and a partition member is mounted on the inner circumference of the intermediate cylinder. This intermediate cylinder is fitted at its upper portion in the cylindrical lower portion of the annular member and is fixed at the outer edge portion of its upper end on the flanged upper portion of the annular member, to form liquid chambers between the partition member, and the vibration absorbing base and the diaphragm and provide communication between the liquid chambers and through an orifice. The intermediate cylinder is press-fitted in the holding cylinder.Type: GrantFiled: November 3, 2000Date of Patent: June 25, 2002Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Yukio Takashima, Tsutomu Hashimoto
-
Patent number: 6394433Abstract: A two-chamber step bearing with hydraulic damping, especially for mounting engines in motor vehicles, has at least one fluid-filled working chamber and at least one compensating chamber connected thereto by an overflow channel. An additional, blockable spring element (10) is arranged in series after the first hydraulic damping spring element comprising the working chamber (1), the compensating chamber (2) and the overflow channel (11), wherein the spring element (10) is arranged in a separate pretensioning chamber (8), which is connected to the working chamber (1) and the compensating chamber (2) by at least two switching elements (16, 17) which can be controlled independently from one another, and wherein the pretensioning chamber (8) can be filled up with hydraulic fluid for blocking the additional spring element (10) by the vibrations introduced into the two-chamber step bearing from the engine.Type: GrantFiled: April 11, 2001Date of Patent: May 28, 2002Assignee: ZF Lemförder Metallwaren AGInventors: Metin Ersoy, Klaus Kramer
-
Patent number: 6386529Abstract: A hydraulically damping elastomeric bearing suitable for mountings in a motor vehicle includes an elastic block which is arranged between an outer sleeve and an inner sleeve coaxial thereto and which connects these elastically to one another, and at least two chambers which are filled with a liquid damping medium and communicate with one another via at least one throttle duct.Type: GrantFiled: July 18, 2001Date of Patent: May 14, 2002Assignee: DaimlerChrysler AGInventors: Robert Bik, Peter Tattermusch, Ulrich Zech
-
Patent number: 6378849Abstract: A method for facilitating the reduction of transmitted motor noise using a mounting system in a frame. The mounting system includes a motor assembly having an end bell, a mounting bracket including a brace, a plurality of attachment openings, a plurality of leaf springs attached to the brace and an anchor device attached to each leaf spring. Each anchor device includes a fastener opening and a grommet. The leaf springs and grommets are configured to filter and damp noise transmitted from the motor to the frame.Type: GrantFiled: April 13, 2001Date of Patent: April 30, 2002Assignee: General Electric CompanyInventors: David M. Erdman, Subhash M. Brahmavar, David L. Bailey, Harold B. Harms
-
Patent number: 6378852Abstract: A dual-mode twin-chamber thrust bearing having hydraulic damping has a working chamber and an equalizing chamber, which are separated by a partition. The chambers are hydraulically connected by a damping channel or optionally by other vibration-damping devices. The partition is provided in its center with a passage that is closable by an actuator, and the outer wall of the equalizing chamber formed by an elastic bellows. The actuator and the elastic bellows form an integral component, which is displaced by an electric motor via an actuator mechanism.Type: GrantFiled: January 20, 2000Date of Patent: April 30, 2002Assignee: Firma Carl FreudenbergInventors: Gerd-Heinz Ticks, Hans-Jürgen Diekmann
-
Patent number: 6378850Abstract: Fluid-filled vibration damping device having a primary fluid chamber partially defined by an elastic body elastically connecting two spaced-apart mounting members and located on one of opposite sides of a partition structure having an orifice passage, an auxiliary fluid chamber partially defined by a flexible diaphragm and located on the other side of the partition structure, wherein the partition structure comprising an orifice including a pair of metallic annular components by pressing and are superposed on each other in an axial direction thereof so as to define therebetween the orifice passage, the pair of annular components being fixed together such that an inner peripheral portion of one annular components is bent to form a calking part which is calked to an inner peripheral portion of the other annular member over an entire inner circumference of the orifice member, and the flexible rubber plate being bonded at an peripheral portion thereof to a surface of the calking part in a process of vulcanizationType: GrantFiled: August 7, 2000Date of Patent: April 30, 2002Assignee: Tokai Rubber Industries, Ltd.Inventor: Yorishige Shimizu
-
Patent number: 6375173Abstract: A vibration-isolating apparatus and a metal stopper having an excellent and lasting reliability comprises an outwardly projecting stopper rubber, and a metal stopper fixed to a first fixture so as to surround the stopper rubber. The metal stopper has a first contact surface in parallel with a compression-direction-facing surface of the stopper rubber, a second contact surface in parallel with a radial-direction-facing surface of the stopper rubber and a third contact surface in parallel with a drawing-direction-facing surface of the stopper rubber, and a fourth contact surface in parallel with a circumferential-direction-facing surface of the stopper rubber. The third contact surface inclines at an angle range of 10°-50° with respect to a plane perpendicular to the compression and drawing directions, while an inner edge of the third contact surface projects radially inward from the second contact surface by not less than 10 mm so as not to contact with the vibration-isolating base body.Type: GrantFiled: April 13, 2000Date of Patent: April 23, 2002Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Yukio Takashima, Tsutomu Hashimoto
-
Patent number: 6364294Abstract: An anti-vibration support comprising two rigid frames joined to one another by an elastomer body which is applied against a rigid partition to define a hydraulic working chamber linked to a compensating chamber by a throttled passage. The liquid contained in the working chamber is in contact with a piston controlled by an electromagnetic actuator with a proportional electromagnet.Type: GrantFiled: May 15, 2000Date of Patent: April 2, 2002Assignee: HutchinsonInventors: André Gennesseaux, Patrice Loubat, Jean-Luc Gastineau, Joël Menager