With Sound Muffling Or Dampening Means Patents (Class 425/211)
  • Patent number: 7661941
    Abstract: A machine for treating or processing a conveyable material, particularly a free-flowing or pasty material or a bulk material comprises at least one passage section having at least one passage through which the conveyable material, which is to be treated or processed, can be conveyed along a direction of conveyance. The at least one passage section forms at least one partial area of a channel of the machine and is mounted so that it can move in relation to this channel. This at least one passage section is coupled to at least one source, which is provided for effecting oscillations and by means of which the passage section can be set in mechanical oscillatory motion with regard to the channel of the machine.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: February 16, 2010
    Assignee: Buehler AG
    Inventor: Boris Ouriev
  • Patent number: 7465161
    Abstract: The invention relates to a device for compressing concrete during the manufacture of concrete parts. Said device comprises a supporting structure, a formwork device which is maintained by the supporting structure and a vibration decoupling device which is arranged between the supporting structure and formwork device. The vibrations required to compress concrete are produced by a vibration device acting directly upon the formwork device. In order to reduce noise emission, the mass of the supporting structure is selected in such a way that the intrinsic frequency of a system consisting of the supporting structure and vibration decoupling device is lower than the excitation frequency of the vibration device. Preferably, the formwork device, vibration decoupling device, vibrators and all electrical feed lines and connections are premounted, forming a module which can then be mounted on the supporting structure.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: December 16, 2008
    Assignee: Wacker Construction Equipment AG
    Inventors: Richard Schulze, Holger Muth
  • Publication number: 20080292739
    Abstract: Compressed preform products formed from continuous fibers substantially evenly coated with a thermoplastic sizing composition are provided. Preferably, the continuous fibers are glass fibers. Applying a thermoplastic sizing composition to continuous fibers during the formation of the fibers enables a preform to be formed without applying any additional sizing or binder compositions at later stages of the manufacturing of the preform. The thermoplastic sizing composition includes a thermoplastic material, and, optionally a silane coupling agent. The thermoplastic material in the thermoplastic sizing composition includes chemicals and/or compounds that are thermoplastic or possess thermoplastic properties. One or more preforms may be randomly inserted to a muffler cavity. Upon the application of heat, the preforms decompress and fill the cavity with fibrous material.
    Type: Application
    Filed: May 25, 2007
    Publication date: November 27, 2008
    Inventors: Sanjay P. Kashikar, Luc J. L. Brandt
  • Patent number: 7293977
    Abstract: The aim of the invention is to produce concrete moulded blocks, using a mould which is subjected to a vibrating process. Said mould comprises a frame (FR) and a moulding insert (FE) which is maintained therein. A device comprising receiving elements arranged in said moulding insert (FE) for receiving a displacement sensor (SE) is provided, in addition to an arrangement comprising said device and at least one sensor. The invention discloses advantageous embodiments and arrangements of said receiving elements. The arrangement of the sensor (SE) on the moulding insert (FE) is particularly advantageous and provides an additional displacement variable for relative displacement between the moulding insert and the frame by combining the displacement variables of a sensor (SE) on the moulding insert (FE) and a sensor (SE) on the frame (FR).
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: November 13, 2007
    Assignee: KOBRA Formen GmbH
    Inventors: Rudolf Braungardt, Erwin Schmucker
  • Publication number: 20020180086
    Abstract: A concrete product molding machine supports a mold with a vertically extending mold cavity. A pallet support is mounted for lifting movement to dispose a pallet to close the cavity. Attachment structure extends from the mold to rest on frame surfaces prior to being moved upwardly to provide a clearance for vertical vibration of the mold. Mechanism vibrates the mold in a vertical path having lateral x and y axis vibration components. A guidance pin receiver is carried by the support attachment structure and a pin carrier assembly on the machine frame carries a vertically reciprocal guidance pin movable from a remote position up into the pin receiver. A vibration limiter is disposed laterally to the pin for limiting at least one of the lateral vibration components and a motor operated mechanism is coupled to the pin for moving the pin vertically.
    Type: Application
    Filed: May 29, 2002
    Publication date: December 5, 2002
    Inventor: Samuel L. Saddler
  • Patent number: 6152722
    Abstract: A device for receiving formwork elements used to manufacture concrete elements has a bearing static structure and a flat formwork joined therewith which can be driven to vibrate by an exciting device in order to compact the still-plastic concrete. The sound-insulating joining devices are inserted between the formwork shell and the static structure. The exciting device bypasses the joining device and acts directly or indirectly on the formwork shell.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: November 28, 2000
    Assignee: Wacker-Werke GmbH & Co., KG
    Inventors: Georg Sick, Edith Kramp, Johann Breitenbach, Alexander Mark
  • Patent number: 6116889
    Abstract: A rotary press, especially for preparing tablets, with a frame, a rotor with drive, at least one pressure roller unit, and a housing. To improve the absorption of the forces introduced into the pressure roller unit, of which there is at least one, and to design the rotary press as a low-vibration and low-noise press, a massive base plate (1) accommodating the rotor (2) with the drive and the pressure roller unit (3) is supported by the base frame (6) by elastic mounts (7). The rigidity of the elastic mounts (7) and the mass of the assembly unit formed by the rotor (2) with the drive and the pressure roller unit (3), of which there is at least one, are coordinated with one another such that the natural frequency of this vibration system in all six possible degrees of freedom is substantially lower than the lowest punch engagement frequency occurring at the lowest speed of rotation, which is the excitation frequency.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: September 12, 2000
    Assignee: Korsch Pressen GmbH
    Inventors: Jurgen Pagel, Michael Matthes
  • Patent number: 5556649
    Abstract: A device for removing runners from intermediate molded products includes a holding assembly for maintaining the products in a desired position, a hammer member, an assembly for vibrating the hammer member to cause repeated striking of the intermediate product so as to separate runner and product portions thereof and a control arrangement for selectively activating and deactivating the vibrating assembly. The control arrangement provides for positioning the vibrating assembly in at least one predetermined position upon deactivation thereof so as to enable the vibrating assembly to be readily restarted. The holding assembly can incorporate a robot arm for transporting and positioning the intermediate molded product for runner removal. In order to protect the robot arm from the effects of vibrational forces, the intermediate molded product is adapted to be resiliently attached to the robot arm.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: September 17, 1996
    Assignee: Yamaha Motor Co., Ltd.
    Inventors: Kouichi Sumioka, Motohiro Haji, Toshiiku Suzuki, Masao Sonobe, Noriyuki Naitoh
  • Patent number: 4459095
    Abstract: At a blow-molding machine for fabricating hollow blow-molded articles from a thermoplastic material a hollow blow mold is moved back and forth with a swinging or pendulum movement upon a transport device containing a mold-supporting platform between a receiving station for the hose-like thermoplastic material to be blow molded and a blow molding station. The platform carries article receiving and transfer means which move in unison therewith and serve to receive the hollow blow-molded bodies or articles formed at the blow-molding station and for delivering the same to an article outfeed or delivery station.
    Type: Grant
    Filed: February 22, 1982
    Date of Patent: July 10, 1984
    Assignee: Hoover Universal, Inc.
    Inventors: Peter Rohr, Otto Burri
  • Patent number: 4395213
    Abstract: Machinery and methods for making concrete blocks includes an open top and open bottom mold supported on a machine's frame when the mold is at rest. A pallet support beneath the mold is movable upwardly by means of a pallet lifter frame to clamp a pallet against the bottom of the mold. Upward movement of the pallet support is accompanied by upward movement of the mold off the frame to enable vibration of the mold without the generation of noise between the mold and the frame. A stripper head is supported above the mold for entry into the latter during vibration of the mold to assist in compacting moldable material within the mold. The stripper head is carried by a movable frame the movements of which are controlled by a cam and an interconnecting linkage, and the stripper head is vertically movable relative to the frame. Inflatable/deflatable cushions or absorbers are interposed between the stripper head and the stripper head frame to minimize noise.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: July 26, 1983
    Assignee: Besser Company
    Inventors: Thomas W. Springs, William F. Wallis
  • Patent number: 4276012
    Abstract: A centrifugal casting machine (20) has a first rotatable shaft (33) and a second rotatable shaft (45) as well as a rotatable core member (100) having a central opening, with at least one of these shafts being adapted for reciprocal movement so as to extend into the core member central opening and adjacent to the other one of the shafts (33) and (45). First (73) and second (83) mold halves are located on opposite sides of the core member (100) and each is adapted to move inwardly and outwardly between open and closed positions. The mold halves (73) and (83) are rotatably supported on bearing means (75) and (85) and in closed position are adapted to rotate with the core member (100) and define a cavity (128) in combination therewith. The improvement takes the form of the addition of mold isolator means (130) and (132) between the bearing means (75) and (85) and the mold halves (73) and ( 83).
    Type: Grant
    Filed: March 7, 1980
    Date of Patent: June 30, 1981
    Assignee: The Firestone Tire & Rubber Company
    Inventor: James H. C. Yang
  • Patent number: 4260352
    Abstract: Fluent material such as mixed concrete to be molded into blocks is contained with a supply hopper for discharge of a predetermined quantity of such material to a mold. The hopper has a discharge opening at one side thereof, rather than at its bottom, so that material discharged from the hopper exits along a substantially horizontal path for reception in a mold supported adjacent the discharge opening. A partition is movable through material in the hopper to divide the contents thereof into upper and lower portions, the upper portion of which is supported on the partition and the lower portion of which is pushed through the hopper's discharge opening by a pusher blade carried by the partition.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: April 7, 1981
    Assignee: Besser Company
    Inventor: Milo G. Balhorn
  • Patent number: 4249873
    Abstract: Apparatus for forming prestressed concrete beams comprising groups of molds, each group forming a module, with the modules arranged consecutively and tracks are placed alongside the modules. Plates seal off the ends of each mold and the beams are lifted off the molds by the plates after the prestressing wires have been cut.
    Type: Grant
    Filed: March 14, 1979
    Date of Patent: February 10, 1981
    Assignee: B. M. Costamagna et Cie
    Inventor: Jean Louis J. Feuillade
  • Patent number: 4238177
    Abstract: A concrete block molding machine has the pallet support table mounted on the main frame of the machine through pneumatic tires which provide vibration isolation between the pallet support table and the main machine frame. A mold, having vibrating mechanism mounted on it is lowered into position on pallets supported by the pallet support table, and the mold and pallet support table are clamped together on opposite sides of a pallet during the molding operation. A plunger head is carried on the main machine frame through additional air bag vibration isolators to engage materials in the mold to compact them during the molding operation while the vibrators are operating. Upon completion of the molding operation, the table and mold are unclamped to permit a stripping plate to move the mold upwardly off of the pallet; so that the pallet and the green concrete blocks may be moved out of the machine and a new pallet may be positioned for the next cycle of operation.
    Type: Grant
    Filed: April 24, 1978
    Date of Patent: December 9, 1980
    Inventors: Eugene E. Crile, Donald D. Schwellenbach
  • Patent number: 4235580
    Abstract: Apparatus for suppressing noise generated by a concrete or the like block making machine having a vibratable open bottom mold against the bottom of which the pallet is clamped to close the mold and provide a support for the molded block. The pallet support and the mold are sandwiched between yieldable, compressible, opposed force applying members which clamp the pallet to the mold and maintain the mold in a state of suspension during its vibration. The clamping of the pallet to the mold and the suspension of the mold greatly minimize noise generated by vibration of the mold.
    Type: Grant
    Filed: June 1, 1978
    Date of Patent: November 25, 1980
    Assignee: Besser Company
    Inventors: Thomas W. Springs, William F. Wallis
  • Patent number: 4110876
    Abstract: A muffler is provided for use in conjunction with a jet for treating a running length of yarn. Audible noise which is emitted by the jet is reduced by at least 11.5 .DELTA.dB(A) through the use of a housing to substantially enclose the jet. The housing has openings for the entrance and exit of a yarn and is at least partially lined with sound absorbing material; sound absorbing material also closes the openings in the housing. The travelling yarn abrades through the sound absorbing material at the openings to form an operational passage to and from the jet.
    Type: Grant
    Filed: August 26, 1977
    Date of Patent: September 5, 1978
    Assignee: Allied Chemical Corporation
    Inventors: William Robert Weiss, James Judson Cooksey, Rob Roy Gordon, Jr.
  • Patent number: 4053266
    Abstract: A protective hood for a tablet compressing machine includes a heavy cover plate 12 resiliently supported on the top of the machine frame 11, vertical support members 14, hinged windows 16 secured to the support members by locks 21, and acoustical absorption plates 15 above and below the windows. Environmental integrity is implemented by channel members 17 around the edges of the support members and provided with chambers 18 kept at a positive pressure through inlets 19. The chambers are closed by rubber seals 20 around the edges of the windows 16.
    Type: Grant
    Filed: May 5, 1976
    Date of Patent: October 11, 1977
    Assignee: Fa. Wilhelm Fette GmbH
    Inventors: Konrad Friedrichs, Jurgen Hinzpeter, Walter Brauner
  • Patent number: 4050505
    Abstract: A jarring moulding machine having a table and impact receiving arrangement between the table and an anvil, which arrangement includes an annular impact member recessed into a surface of the anvil, and an impact insert of greater resilience than the impact member seated in an annular recess of step form at the inner periphery of the annular impact member. The top surface of the impact member projects slightly beyond of the anvil surface and the top surface of the impact insert projects slightly beyond of the top surface of the surrounding impact member so that the insert receives the impact before the impact member. The seating recess for the insert is undercut at the junction of its walls so as to leave a small clearance therebetween. The impact member may be of a polyethylene synthetic plastics material and the insert may be of rubbery polyurethane.
    Type: Grant
    Filed: May 5, 1975
    Date of Patent: September 27, 1977
    Assignee: Badische Maschinenfabrik GmbH
    Inventors: Gert Kemper, Roland Melzer
  • Patent number: 4025265
    Abstract: Apparatus for supporting, transporting and rotating mold forms for producing concrete reinforced ties wherein a gantry includes a pair of rotatable clamping devices on opposite ends thereof whereby the mold forms may be held in a position to be filled with concrete, moved to a mold dismantling position while being rotated through an angle of 180.degree. with the concrete ties being subsequently removed from the mold forms. The rotatable clamping devices include vise means for supporting the mold forms and clamping means for holding the mold forms in their assembled condition during rotation thereof through 180.degree. while permitting dismantling of the molds after they are brought into their inverted position. The gantry device is movable over a production and dismantling area and means are provided for stacking the finished concrete ties.
    Type: Grant
    Filed: October 15, 1975
    Date of Patent: May 24, 1977
    Assignee: Dyckerhoff & Widmann Aktiengesellschaft
    Inventor: Peter Auer
  • Patent number: 3961874
    Abstract: Apparatus for forming concrete building blocks which is constructed and arranged (1) to minimize sound emissions to the environment of a magnitude which might cause injury to the hearing of the operators, (2) to provide shielding around the major movable components of the machine so as to substantially eliminate potential causes of bodily injury to the operators, and (3) to improve the performance and cooperation of the major components for making concrete blocks. To provide shielding against noise and bodily injury, the frame of the apparatus is constructed in conjunction with sound insulation panels to provide an enclosure around the major movable components of the apparatus, and the frame also supports these components on internal surfaces thereof so as to minimize sound transmission openings to the environment.
    Type: Grant
    Filed: January 27, 1975
    Date of Patent: June 8, 1976
    Assignee: Old Fort International, Inc.
    Inventor: Milo G. Balhorn