Sound Deadeners Patents (Class 105/452)
  • Patent number: 11268246
    Abstract: A tuned mass damper for damping airborne vibrations at one or more rail frequencies from a rail generated by movement of wheels over the rail. The tuned mass damper includes one or more damper elements including a damper element material, and a body element including a body material. The damper elements are at least partially embedded in the body element. The body element has inner and lower exterior surfaces formed to fit within first and second pockets on opposite first and second sides of the rail defined by a web portion and a foot. The damper element material and the body material are selected and formed so that the tuned mass damper vibrates in response to movement of the wheels over the rail at one or more damper frequencies that at least partially interferes with the rail frequencies.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: March 8, 2022
    Assignee: Polycorp Ltd.
    Inventors: Richard Theodore Ellis, Marco Leone
  • Patent number: 9937961
    Abstract: A mounting device for a sub-frame may include a mounting bracket positioned to correspond with a one side penetration opening formed at a front side inside member of the front side member, a reinforce panel provided to an upper surface of the front side inside member, a mounting bolt separated with a bolt part and a head by a flange which is positioned at a center thereof, joined to a circumference of a bolt opening of the mounting bracket through the flange on a state that the bolt part is inserted into the bolt opening of the mounting bracket, and joined on a state that the head is wedged through the penetration opening of the front side inside member to the welding opening of the reinforce panel, and a foam filler foamed by a heat treatment and filled in a space formed by the front side inside member, the mounting bracket, the reinforce panel, and a front side outside member.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: April 10, 2018
    Assignee: Hyundai Motor Company
    Inventors: Yunjeong Lee, Jae Woo Joung
  • Publication number: 20120266777
    Abstract: The present invention provides a railroad vehicle having a truck structure in which soundproof effect can sufficiently be enhanced. Soundproof member 22 having flexibility is mounted to support member 21 fixed to axle box 15. The support member is fixed to the axle box at an outer side of a vehicle body at wheel 14 in such a manner that the lower end thereof is located above a position set beforehand. The soundproof member is arranged parallel to the rail at the outer side of the vehicle body at the position where the wheel rolls on rail 17. The upper part of the soundproof member is mounted to the support member in such a manner that the position thereof in the vertical direction can be adjusted, and the lower end of the soundproof member is located above a surface of the rail.
    Type: Application
    Filed: September 23, 2011
    Publication date: October 25, 2012
    Applicant: Nippon Sharyo, Ltd.
    Inventors: Takeshi Morita, Toshiki Kunii
  • Patent number: 7249654
    Abstract: To obtain a wide passenger compartment space, the thickness of a heat insulating acoustical layer is reduced, and for this purpose, a comfortable in-car environment is obtained by using a vacuum insulating panel which combines high heat insulating performance and sound insulating performance. A heat insulating acoustical layer 20 is formed on one surface of a lightweight alloy structure 10 of double skin construction by using a vacuum insulating panel 21 as a middle member and sandwiching two surfaces of the panel with elastic sound absorbing materials 22, 23 made of a nonwoven fabric or a foamed body, and the heat insulating acoustical layer is covered with an interior material 24. Owing to this construction, the transmission loss of a noise which transmits from the double skin structure side is improved by the mutual actions of the elasticity of the sound absorbing material and the rigidity of the vacuum heat insulating panel.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: July 31, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Hidekazu Nakamoto, Seijiro Todori, Takeshi Kawasaki
  • Patent number: 6708626
    Abstract: A double-walled damping structure includes two parallel face plates 1 and 2, a plurality of ribs 3 and 4 extending in the same direction to connect the two parallel face plates 1 and 2, wherein in a section taken perpendicularly to the direction of extension of the ribs 3 and 4, all or most of the holes defined by the adjacent two ribs and the face plates are trapezoidal. The structure less transmits vibration, and is capable of further increasing a damping effect when a damping material is attached.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: March 23, 2004
    Assignee: Kobe Steel, Ltd.
    Inventors: Hiroki Ueda, Ichiro Yamagiwa, Akio Sugimoto, Toshimitsu Tanaka, Narikazu Hashimoto, Takashi Oka
  • Publication number: 20030000417
    Abstract: A double-walled damping structure includes two parallel face plates 1 and 2, a plurality of ribs 3 and 4 extending in the same direction to connect the two parallel face plates 1 and 2, wherein in a section taken perpendicularly to the direction of extension of the ribs 3 and 4, all or most of the holes defined by the adjacent two ribs and the face plates are trapezoidal. The structure less transmits vibration, and is capable of further increasing a damping effect when a damping material is attached.
    Type: Application
    Filed: June 4, 2002
    Publication date: January 2, 2003
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Hiroki Ueda, Ichiro Yamagiwa, Akio Sugimoto, Toshimitsu Tanaka, Narikazu Hashimoto, Takashi Oka
  • Patent number: 6390382
    Abstract: A damper for reducing the track nose emitted by a rail system comprises a deformable material attachable to a surface of the rail, incorporating a plurality of elongate discontinuous resonant members of a stiff material as compared to the deformable material, sized to contain at least two resonant frequencies in the range of interest. The resonant members are suitably of steel or other metallic material. They can be of different profile, to form a resonant system with at least two resonant frequencies in the relevant frequency range. They are suitably embedded in the deformable material, to ensure adequate vibrational transfer from the rail to the resonant members and also provide environmental protection. The deformable member is visco-elastic, for example rubber or rubber-like material. This may be preformed and glued to the rail, or it can be cured in place on the rail. The damper is positioned on the rail at the junction between the web and the foot of the rail.
    Type: Grant
    Filed: September 6, 2000
    Date of Patent: May 21, 2002
    Assignees: Corus UK Limited, University of Southampton
    Inventors: William Hodgson, John Barry Clarke, David Farrington, David John Thompson, Christopher John Cedric Jones
  • Patent number: 6253872
    Abstract: A noise control device for tracks (1) comprising sound-absorbing slabs (3) mounted at the rails (2) of the track (1), the slabs being supported on the rails (2) via elastic sections (5) and self-supportingly bridging the space between the rails (2). To improve silencing of the slabs (3) it is provided for the slabs (3) to be comprised of particles (9) of porous lightweight building material, which are combined by a binder. The slabs (3) have an embedded reinforcement (11). Advantageously, also silencing cavity resonators (14) are formed in the slabs (3). A special embodiment provides for the space between the rails (2) of a track to be bridged by slab parts (3a, 3b) arranged in pairs which are supported on each other at their rims (26, 27) facing each other.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: July 3, 2001
    Assignee: Gmundner Fertigteile Gesellschaft m.b.H & Co., KG
    Inventor: Bernhard Neumann
  • Patent number: 6112849
    Abstract: A sound protection device for reducing the propagation of airborne sound comprises a track system and an elastically deformable, low sound-protecting wall made of rubber or plastic and extending in the longitudinal direction of the track. The sound-protecting wall is arranged at a distance to the track and on the side facing the track has a profile which essentially extends across the entire height of the wall. The side of the protecting wall facing away from the track has a generally even surface. The inner side is inclined at an angle a and the outer side at an angle .beta. to the track, whereby angle .beta. is greater than angle .alpha.. The profile of the inner side consists of a system of lips, which lips points towards the floor of the track at an angle .gamma.. The top of the low sound-protecting wall ends in a lip inclined towards the track, which lip points upwardly at an angle .delta..
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: September 5, 2000
    Assignee: Phoenix Aktiengesellschaft
    Inventors: Norbert Garbers, Bernd Pahl, Jan Thiedeitz
  • Patent number: 5799583
    Abstract: A rail vehicle includes a self-supporting car body having a floor and a roof as well as side walls with windows and an entrance region. The side walls are each formed by a framework connected to the floor in a flexurally rigid manner and the side walls have side-wall elements. The side-wall elements are of rigid construction and are fastened in a non-load-bearing manner to the framework through the use of an adhesive connection. The adhesive connection serves to dampen oscillations occurring during operation of the rail vehicle.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: September 1, 1998
    Assignee: ABB Henschel Aktiengesellschaft
    Inventor: Guido Bieker
  • Patent number: 5734133
    Abstract: A muffler for structure-borne noise of running wheels of different diameters and/or different frequency spectrums of structure-borne sound vibrations has vibration absorbing elements in the form of members which are arranged next to one another in the circumferential direction, forming a circular disk, and are each connected on the base surface in a force-locking manner with the running wheel. The muffler for structure-borne noise consists of at least a first type of vibration absorbing elements which is always the same for a larger range of running wheel diameters, and at least a second type of vibration absorbing elements which is adapted to the respective running wheel diameter and frequency spectrum of structure-borne sound vibrations.
    Type: Grant
    Filed: March 15, 1996
    Date of Patent: March 31, 1998
    Assignee: Daimler-Benz Aerospace AG
    Inventors: Thomas Mayer, Klaus Zimmermann
  • Patent number: 5690035
    Abstract: A truss type extruded aluminum section (1) is formed of a pair of planar plates (2)(3) and ribs (4)(5)(6), wherein hollow portions (7)(8)(9) are formed within the section (1) by the ribs (4)(5)(6) and the planar plates (2)(3). Vibration-damping resin is provided on the inner surfaces of hollow portions (7)(8)(9), and particularly on the inner surface of the planar plate (3) and on a single surface of the inclined rib (4). With this arrangement, the vibration energy bending the planar plate (3) and the rib (4) is converted into a heat energy. In the case of manufacturing such truss type extruded aluminum vibration-damping section (1), for making easy the insertion of the vibration-damping resin in the hollow portion, the vibration-damping resin is stuck on a plastic film (11) to form a long planar body. The plastic film (11) serves as a cover or an adhesive.
    Type: Grant
    Filed: November 5, 1996
    Date of Patent: November 25, 1997
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Tadashi Hatayama, Ichiro Yamagiwa, Kenshi Maekawa, Kenji Iwai, Toshimitsu Tanaka, Mamoru Taniuchi, Reiji Sanuki, Isamu Ueki, Toshihiko Sasaki, Akio Sugimoto, Kazuhisa Fujisawa
  • Patent number: 5671685
    Abstract: The acoustic barrier, particularly for railways, comprises at least a first sound-proofing member (2), arranged at the sides of a train (3) proximate to at least each bogie (4), and at least a second sound-proofing member (5) arranged on the supporting plane (6) of the rails (8) at the sides of said rails, the second sound-proofing member cooperates with the first sound-proofing member for abating the noise generated by the passage of the train on the rails.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: September 30, 1997
    Inventor: Stefano Ughi
  • Patent number: 5339745
    Abstract: A sound proofing and vibration dampening connecting element (B) for floating suspension of a floor-deck on a structural, load-bearing carriage floor of railway vehicles for passenger transport features a base section (28) that is U-shaped in cross-section and, projecting partly over this, a deck-supporting section (38) that is U-shaped in cross-section with base strips (30, 40) having flanges (32, 42) projecting perpendicularly from them. Between the pairs of facing flanges (32, 42) and adhesively bonded to them are elastic profiled strips (46) that, along with base strips (30, 40) forming the contact surfaces for the carriage floor (26) and floor-deck (27), delimit a hollow space (47).
    Type: Grant
    Filed: June 1, 1993
    Date of Patent: August 23, 1994
    Assignee: Alusuisse-Lonza Services Ltd.
    Inventors: Antal Ritzl, Markus Wernli
  • Patent number: 4496183
    Abstract: A rail wheel has in one of its rim surfaces, preferably the inner one, a circumferential undercut groove. Vibration-damping elements are connected to the wheel by means of screws which either engage in the undercut groove via appropriately shaped heads, or are threaded into wedges lodged in the groove.
    Type: Grant
    Filed: August 17, 1981
    Date of Patent: January 29, 1985
    Assignee: Krupp Stahl Aktiengesellschaft
    Inventors: Willi Kasper, Helmut Licht, Erwin Raquet, Jurgen Schneider
  • Patent number: 4436179
    Abstract: A noise control apparatus for reducing a sound volume of a noise propagating from a noise source such as a railroad includes a sound arresting wall placed apart from the noise source. Means for shifting in phase and refracting the acoustic wave of the noise is disposed at substantially the top of the noise arresting wall. The above means, for example, has a plurality of passageways extending substantially along the propagating direction of the acoustic wave of the noise and the length of the passageways varies. Through the above means, a part of the acoustic wave from the noise source is refracted and the phase thereof is shifted to be a refracted propagating sound, which thereafter interferes with the other part of the acoustic wave directly from the noise source to thereby reduce a sound volume to a great extent.
    Type: Grant
    Filed: December 30, 1981
    Date of Patent: March 13, 1984
    Assignees: Japanese National Railways, Bridgestone Tire Company Limited
    Inventors: Tsuyoshi Yamamoto, Norihisa Taniguchi, Kazuyoshi Iida, Yoshikazu Kondo
  • Patent number: 4392681
    Abstract: In a vibration absorber for resonance vibrations of rotating bodies, in particular rail wheels, comprising several oscillatory plates which establish a damping mass; intermediate layers of damping material separating the plates from each other; a fastener connecting the plates with the rotating body at at least one point and an intermediate layer of damping material coupling the plates over a large remaining area to the rotating body the geometric dimensions of the plates and the intermediate layers and the Shore hardness of the damping material of the intermediate layers is selected such that all plates oscillate at a natural frequency of the rotating body to be damped, but with the amplitudes and phases of the vibrations of the individual plates differing in such a manner, with respect to one another, that the damping material is as strongly distorted as possible.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: July 12, 1983
    Assignee: Fried, Krupp Huttenwerke AG
    Inventor: Erwin Raquet
  • Patent number: 4364594
    Abstract: A vibration damping device for a body resonant at two frequencies, is formed by a plate which can be connected to the body transversely with respect to its vibration direction. A post extends from the plate and mounts one end of an elastically flexible tongue which extends from the post substantially parallel to the plate so as to form a space between the tongue and plate. A weight is fixed to the other end of the tongue and vibration damping material is positioned in the space. The tongue and weight form a system resonant at both of the bodies' resonant frequencies, the tongue's energy being absorbed by the damping material.
    Type: Grant
    Filed: August 8, 1979
    Date of Patent: December 21, 1982
    Assignee: Fried. Krupp Huttenwerke AG
    Inventor: Erwin Raquet
  • Patent number: 4355578
    Abstract: A system comprising a rail wheel and rail has the wheel and preferably also the rail provided with vibration dampers which absorb vibration having the frequency of the radial resonant vibration frequency of the wheel, for the purpose of preventing the formation of ripples in the rail head's surface on which the wheel runs.
    Type: Grant
    Filed: July 24, 1979
    Date of Patent: October 26, 1982
    Assignee: Fried. Krupp Huttenwerke AG
    Inventor: Erwin Raquet
  • Patent number: 4353586
    Abstract: A vibration absorbing track wheel having one or more different natural frequencies. The wheel body has a wheel flange with one or more resonance absorbers on the wheel flange. Each resonance absorber comprises at least two tongues and an intermediate layer of damping material between each of the two adjacent tongues, and each tongue is turned to a different natural frequency of the wheel.
    Type: Grant
    Filed: May 4, 1978
    Date of Patent: October 12, 1982
    Assignee: Fried. Krupp Huttenwerke AG
    Inventors: Erwin Raquet, Richard Klatt
  • Patent number: 4186665
    Abstract: A diesel-engined rail shunting locomotive is provided which combines a very high level of noise insulation with excellent accessibility to the engine and associated apparatus. The locomotive is adapted for remote control by radio, and also has at least one cab for the operator. The engine and associated apparatus are covered by a noise insulating rectangular box-shaped hood which is liftable as a single unit by means of power-operated lifting means provided on the locomotive. The lifting means may be screw jacks located in the four corners of the hood. The cab has an end wall slightly spaced from adjacent the end wall of the hood, to simplify construction and improve sound insulation.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: February 5, 1980
    Assignee: Hoogovens Ijmuiden, B. V.
    Inventors: Hendrikus de Jong, Joseph A. Welboren
  • Patent number: 4183572
    Abstract: The present noise damping apparatus is especially intended for damping the noise caused by wheels running on rails. For this purpose there is provided a noise screen connected to at least one surface of the rail wheel in a force transmitting, yet removable manner. The noise screen comprises vibration damping reed members. This screen prevents noise generated by the wheel proper from radiating outwardly and it also acts as a noise absorber for the impact noise propagating in the wheel and other solid bodies.
    Type: Grant
    Filed: November 10, 1977
    Date of Patent: January 15, 1980
    Assignee: Messerschmitt-Bolkow-Blohm GmbH
    Inventors: Helmut Albrecht, Oskar Bschorr, Helmut Hassel
  • Patent number: 4158401
    Abstract: A device for controlling a propagation direction of noise, which is preferably associated with a sound insulating wall to significantly improve its sound reducing effect of alleviating noise emitted from a noise source such as a railroad, highway and the like on which an electric car and automobiles run. The device comprises a hollow structural body composed of a plurality of elongated vertical hollow passages arranged at right angles to a substrate and spaced apart from each other by means of partition walls. The upper noise inlet side surface of the hollow passages face a propagation direction of noise emitted from the noise source and serve to refract and lag in phase the noise passed therethrough, thereby producing a sound reducing region located intermediate between a direct sound propagation and the refracted sound propagation. In one embodiment, a pair of hollow structural bodies are arranged in opposition to each other to form an arch type device.
    Type: Grant
    Filed: July 9, 1976
    Date of Patent: June 19, 1979
    Assignee: Bridgestone Tire Company Limited
    Inventors: Masayasu Matsumoto, Kazuyoshi Iida, Yoshikazu Kondo, Keiichiro Mizuno, Sadao Nomoto, Noriaki Murayama, Kei Watanabe, Tomonori Katayama
  • Patent number: 4156476
    Abstract: A noise control device which produces behind it an enlarged sound reducing region is disclosed. The device comprises a hollow structural body composed of a plurality of elongate hollow passages which are different in length and constructed such that the passage length is made the longest at a substantially center part in a vertical direction and is made gradually shorter from the center part toward upper and lower edges of the hollow structural body. The upper and lower edges allow direct propagation sound emitted from a noise source to pass thereover and therethrough.
    Type: Grant
    Filed: February 27, 1978
    Date of Patent: May 29, 1979
    Assignee: Bridgestone Tire Company Limited
    Inventors: Masayasu Matsumoto, Kazuyoshi Iida, Yoshikazu Kondo, Keiichiro Mizuno, Sadao Nomoto, Noriaki Murayama, Tomonori Katayama, Keiichiro Tabata, Kenichi Onda
  • Patent number: 4069768
    Abstract: A device for controlling a propagation direction of noise which is preferably associated with a sound insulating wall to significantly improve its sound reducing effect of alleviating noise emitted from a noise source such as a railroad, highway and the like on which an electric car and automobiles run. The device comprises a hollow structural body composed of a plurality of elongate hollow passages superimposed one upon the other and spaced apart from each other. The passages are arranged in a propagation direction of noise emitted from the noise source and serve to refract and lag in phase the noise passed therethrough, thereby producing a sound reducing region located intermediate between a direct propagation sound and the refraction propagation sound.
    Type: Grant
    Filed: May 14, 1976
    Date of Patent: January 24, 1978
    Assignee: Bridgestone Tire Company Limited
    Inventors: Masayasu Matsumoto, Kazuyoshi Iida, Yoshikazu Kondo, Keiichiro Mizuno, Sadao Nomoto, Noriaki Murayama, Kei Watanabe