Compacting Roller With Vibrating Means Patents (Class 404/117)
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Patent number: 6769838Abstract: A vibratory mechanism includes first and second eccentric weights connected to a gearbox. The gearbox includes an inner shaft, an outer shaft and first and second planetary gear sets. The first and second planetary gear sets are connected to a motor that drives the first and second eccentric weights during operation via the inner shaft and outer shaft respectively. A phase control device is operatively connected to the second planetary gear set to index the second eccentric weight relative to the first eccentric weight.Type: GrantFiled: October 31, 2001Date of Patent: August 3, 2004Assignee: Caterpillar Paving Products IncInventor: Dean R. Potts
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Publication number: 20040120767Abstract: A vibratory mechanism is provided for a compacting work machine. The vibratory mechanism includes at least one eccentric weight rotatably positioned within a housing. Pressurized fluid is introduced into the vibratory mechanism at an inlet passage. A means for moving fluid through the vibratory mechanism and lubricating a pair of bearings is provided that operates during rotation of the eccentric weight.Type: ApplicationFiled: December 20, 2002Publication date: June 24, 2004Inventors: Dean R. Potts, Federico B. Rio
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Patent number: 6752567Abstract: An apparatus for managing degree of compaction includes: a sensor 13 which senses a traveling speed of the vehicle; a switch 14 by which a number of vibrations of the roll transmitted per unit time is set; a reference vibration number setting section 15 by which a reference number of vibrations of the roll transmitted per unit of longitudinal travel of the vehicle is set; an input/output calculating section 16 controlling electric signals outputted from the sensor 13, the switch 14, and the reference vibration number setting section 15, respectively; and a monitor section 17 relatively and comparatively indicating, as a vehicle speed index value, magnitude relation of a current number of vibrations of the roll transmitted per unit of longitudinal travel of the vehicle relative to the reference number of vibrations of the roll on the basis of an electric signal outputted from the input/output calculating section 16.Type: GrantFiled: September 3, 2002Date of Patent: June 22, 2004Assignee: Sakai Heavy Industries, Ind.Inventors: Isamu Miyamoto, Shinnosuke Tanaka
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Patent number: 6750621Abstract: The present invention discloses a system for non-contact measurement of vibrational motion in a vibratory compacting machine. The system includes a vibrating element such as a roller drum adapted for vibrational motion and a non-contact sensor positioned a distance from the vibrating element and adapted for sensing the vibrational motion of the vibrating element. The present invention also discloses a method for non-contact measurement of vibrational motion of a vibrating element in a vibrating element that includes sensing position information of the roller drum with a non-contact sensor positioned a distance from the vibrating element and determining at least one vibration characteristic based on the position information sensed with the non-contact sensor.Type: GrantFiled: September 10, 2001Date of Patent: June 15, 2004Assignee: Sauer-Danfoss Inc.Inventor: Michael D. Gandrud
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Patent number: 6742960Abstract: Vehicular and/or walk behind vibratory compactors utilize a vibrated roller or plate to impose compaction forces on a densifiable strata, such as ground soil, a roadway base material or pavement. Utilizing a rotating energy source, such as a engine or hydraulic motor, to create the vibration appears to have reached its limit in the ability to provide a wide range of vibration frequencies and amplitudes to satisfy the ever increasing demands placed on vibratory compactors. Instead of relying upon rotational energy, the present invention contemplates the use of a linear oscillator to produce the vibrations, and preferably utilizes at least one electromagnet to control the frequency(s) and amplitude(s) of a compacting vibration. The present invention finds potential application in a wide range of vibratory compactors, including walk behind models that utilize a plate and larger vehicular models that include one or more vibrating rollers.Type: GrantFiled: July 9, 2002Date of Patent: June 1, 2004Assignee: Caterpillar Inc.Inventors: Paul T. Corcoran, Thomas J. Richards, George Codina
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Patent number: 6725736Abstract: The present invention relates to a rotatable eccentric element for continuous adjustment of vibration amplitude, for use in, for example, the roll in vibrating rollers. In particular, the invention relates to a rotatable eccentric arrangement adapted for stepless adjustment of vibration amplitude, comprising a rotatable shaft (1) with an eccentric weight (2) arranged in a fixed manner thereon and a movable weight (5) which is pivotable relative to the fixed weight between a position with maximum amplitude and a position with minimum amplitude for changing the vibration amplitude of the arrangement. The invention is characterized in that the pivoting axis for the pivoting of the movable eccentric weight (5) is displaced from the axis of rotation of the shaft (1) and at least to an extent towards the centre of gravity of the fixed weight (2).Type: GrantFiled: March 26, 2001Date of Patent: April 27, 2004Inventor: Rune Sturesson
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Patent number: 6717379Abstract: The invention concerns a device where creation of mechanical vibration is made with a system (1) of two or more rotating eccentrics (10). Each eccentric (10) is rotated by an individually controlled motor (11) and the angle position of each eccentric (10) is read by an angle sensor (12). With a control and monitoring system (5), the rotation frequency, direction of rotation and phase position of each eccentric (10) can be controlled. By choosing a number of eccentrics, mass of the eccentrics, rotation frequency, direction of rotation and phase position, a force vector diagram of suitable form, in space and time, can be generated. The invention is intended primarily for use in appliances for dynamic compaction of various materials.Type: GrantFiled: September 18, 2001Date of Patent: April 6, 2004Inventor: Ulf Bertil Andersson
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Patent number: 6698974Abstract: A system for variably powering and vibrating a compaction roller on a compacting machine for use in compacting surfaces. The system includes a chassis and at least one compaction roller rotatably journaled to the chassis. The compaction roller forms the rotor of a variable reluctance motor for driving the roller in a rotational manner and for vibrating the roller.Type: GrantFiled: December 11, 2001Date of Patent: March 2, 2004Assignee: Caterpillar IncInventors: George Codina, Dean R. Potts, Thomas J. Richards
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Publication number: 20040028472Abstract: In a compressor comprising at least one traveling drum (4,4a,4b) rotatable about a drum axis (2), and an oscillation exciter supported in the drum (4,4a, 4b), the angular position of the oscillation exciter being adjustable by an adjustable pivoting angle relative to a vertical plane which extends through the drum axis (2), it is provided that the oscillation exciter comprises a pendulum-type vibrator (10) having a pendulum-type housing (8) which pivots about a pivoting axis extending coaxially to the drum axis (2) and includes a single unbalance exciter shaft (12) supported at a radial parallel distance to the drum axis (2) in the pendulum-type housing (8), wherein the pendulum-type vibrator (10) generates an elliptical drum oscillation.Type: ApplicationFiled: May 29, 2003Publication date: February 12, 2004Inventor: Wolfgang Richter
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Patent number: 6688809Abstract: The invention discloses a power transmission arrangement for a compactor, in which a roller is installed to both end-pieces of a roller frame. In both end-pieces, there are bearing assemblies supporting the roller. In addition, in at least one end of the roller there is a hub motor, which is arranged to rotate the roller. The bearings of the hub motor form the bearing assembly supporting the end of the roller. In addition, the roller is supported from the end-piece with the aid of the hub motor and a universal joint. The universal joint transmits moment and permits a variation in the angle between the roller and the end-piece.Type: GrantFiled: November 8, 2001Date of Patent: February 10, 2004Assignee: Oy Tanacorp LTDInventor: Hannu Heinäsenaho
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Publication number: 20040009039Abstract: Vehicular and/or walk behind vibratory compactors utilize a vibrated roller or plate to impose compaction forces on a densifiable strata, such as ground soil, a roadway base material or pavement. Utilizing a rotating energy source, such as a engine or hydraulic motor, to create the vibration appears to have reached its limit in the ability to provide a wide range of vibration frequencies and amplitudes to satisfy the ever increasing demands placed on vibratory compactors. Instead of relying upon rotational energy, the present invention contemplates the use of a linear oscillator to produce the vibrations, and preferably utilizes at least one electromagnet to control the frequency(s) and amplitude(s) of a compacting vibration. The present invention finds potential application in a wide range of vibratory compactors, including walk behind models that utilize a plate and larger vehicular models that include one or more vibrating rollers.Type: ApplicationFiled: July 9, 2002Publication date: January 15, 2004Inventors: Paul T. Corcoran, Thomas J. Richards, George Codina
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Publication number: 20040005191Abstract: A method of assembling an exciter assembly for a compaction machine includes mounting a torque transfer element and a bearing on an exciter shaft. A fixed eccentric weight is mounted on the exciter shaft. First and second free swinging eccentric weights are mounted on the exciter shaft adjacent respective ends of the fixed eccentric weight so as to be rotatable a limited amount relative to the exciter shaft. The first and second free swinging eccentric weights are restrained from substantial axial movement along the exciter shaft solely by being sandwiched the first and second free swinging eccentric weights between the respective ends of the fixed eccentric weight and operative components of the exciter assembly. All of the mounting steps are performed without the use of any mounting hardware.Type: ApplicationFiled: July 8, 2003Publication date: January 8, 2004Applicant: Wacker CorporationInventors: Daniel Geier, Ronald Brinkmann, Jay Baudhuin
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Publication number: 20030223816Abstract: A controller for use in a vibratory mechanism includes an amplitude control circuit that generates an amplitude control signal that varies from a minimum value to a maximum value. The vibratory mechanism is adapted to vibrate at an amplitude based on an amplitude control signal characteristic. Additionally, the controller includes a frequency control circuit that is operatively coupled to the amplitude control-circuit to produce a frequency control signal that varies based on the amplitude control signal characteristic.Type: ApplicationFiled: May 29, 2002Publication date: December 4, 2003Inventor: Dean R. Potts
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Patent number: 6637280Abstract: A vibratory mechanism is provided with first and second motors connected to first and second eccentric weights. One of the first and second motors is operable to change a phase difference between the first and second eccentric weights to change a vibration amplitude.Type: GrantFiled: October 31, 2001Date of Patent: October 28, 2003Assignee: Caterpillar Paving Products IncInventor: Dean R. Potts
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Patent number: 6585450Abstract: The eccentric assembly includes a tubular section, an eccentric weight, and a counterweight. The eccentric weight is mounted within the tubular section such that as a motor rotates the eccentric assembly, the eccentric weight generates vibrations that are transferred to the drum assembly of the vibration compacting machine. The counterweight is slidably coupled to the eccentric weight and moves between a first position where the counterweight contacts the eccentric weight and a second position where the counterweight contacts the tubular section.Type: GrantFiled: July 10, 2001Date of Patent: July 1, 2003Assignee: Ingersoll-Rand CompanyInventors: Kent Meyers, Steve K. Yates
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Publication number: 20030118401Abstract: A suspension arrangement is provided for a compacting drum of a compacting work machine. First and second suspension members connect first and second ends of the compacting drum to a frame of the work machine. The first and second suspension members allow the first and second ends of the compacting drum to oscillate through an angle &agr; about a horizontal axis relative to the frame.Type: ApplicationFiled: December 20, 2001Publication date: June 26, 2003Inventors: Kevin J. Magee, Donald J. Swanson
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Publication number: 20030108389Abstract: A system is provided for variably powering and vibrating a compaction roller on a compacting machine for use in compacting surfaces. The system includes a chassis and at least one compaction roller rotatably journaled to the chassis. The compaction roller forms the rotor of a variable reluctance motor for driving the roller in a rotational manner and for vibrating the roller.Type: ApplicationFiled: December 11, 2001Publication date: June 12, 2003Inventors: George Codina, Dean R. Potts, Thomas J. Richards
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Patent number: 6561729Abstract: A compacting drum for a work machine has first and second drum sections. The first and second coaxial drum sections rotate independently from one another. The first and second drum sections are coupled together by a controllable coupling arrangement that can be varied between fully coupled and fully uncoupled.Type: GrantFiled: December 14, 2001Date of Patent: May 13, 2003Assignee: Caterpillar Paving Products Inc.Inventor: Dean R. Potts
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Patent number: 6558072Abstract: A work machine 10 for increasing the density of a compactable material 12 includes at least one compacting drum 14 driven by a two-speed drive arrangement 40. Compacting drum 14 also includes a vibratory mechanism 26 that is powered by a hydraulic motor 28. A first input device 54 is used to select the frequency of the vibratory mechanism 26. A second input device is used to select the output speed of the two-speed drive arrangement 40. A third input device 66 is used to select a desired impact spacing of the vibratory mechanism relative to the output speed of the two-speed drive arrangement 40. A controller 52 receives signals from the input devices 54,60,66 and responsively controls the output of a pump 22 automatically propelling the work machine 10 to a speed at which the desired impact spacing is obtained.Type: GrantFiled: May 15, 2001Date of Patent: May 6, 2003Assignee: Caterpillar Paving Products Inc.Inventors: Greg B. Staffenhagen, Tom J. Suelflow
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Publication number: 20030082003Abstract: A vibratory mechanism includes first and second eccentric weights connected to a gearbox. The gearbox includes an inner shaft, an outer shaft and first and second planetary gear sets. The first and second planetary gear sets are connected to a motor that drives the first and second eccentric weights during operation via the inner shaft and outer shaft respectively. A phase control device is operatively connected to the second planetary gear set to index the second eccentric weight relative to the first eccentric weight.Type: ApplicationFiled: October 31, 2001Publication date: May 1, 2003Inventor: Dean R. Potts
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Publication number: 20030082001Abstract: A vibratory mechanism includes a motor, and a clutch having first and second output shafts. The first and second output shafts are connected with first and second eccentric weights. The clutch is operative to engage and disengage the inner and outer drive shafts from each other to change a phase difference between the first and second eccentric weights.Type: ApplicationFiled: October 31, 2001Publication date: May 1, 2003Inventor: Dean R. Potts
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Publication number: 20030082002Abstract: A vibratory mechanism having a first eccentric weight coaxially rotatable with a second eccentric weight and a clutch operatively connecting the first and second eccentric weights. The clutch allows for co-rotation of the first and second eccentric weights and the ability to index the first eccentric weight relative to second eccentric weight to vary the vibrational amplitude.Type: ApplicationFiled: October 31, 2001Publication date: May 1, 2003Inventor: Dean R. Potts
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Patent number: 6554532Abstract: The invention concerns a device for ground compacting, having at least one vibrating roller whose casing surface is composed of a plurality of segments in the peripheral direction, at least some of which have midpoints which describe an arc having a radius of curvature that deviates from the mean radius of the roller. In order to smooth the jolting movement resulting from the shape of the rollers in devices of this type, it is proposed to construct the tire casing of the roller from several sections lying adjacent to one another in the axial direction, said sections having segments abutting one another in the peripheral direction, whereby the abutting edges are displaced vis-à-vis one another in the peripheral direction.Type: GrantFiled: August 22, 2000Date of Patent: April 29, 2003Assignee: Bomag GmbH & Co. OHGInventors: Karl Hermann Mötz, Uwe Blancke
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Patent number: 6551019Abstract: A device for checking the compaction, in particular, of black top pavement in street and roadway construction, using a vibration roller drum that is provided with a compaction checking device is provided. In the compaction of black top pavement, the measurement methods of the dynamic ground rigidity, known from ground compaction, for determining the condition of compaction that has been achieved, can not be used since the asphalt rigidity varies between two measurements with the temperature and in addition, the underground rigidity is measured with it proportionately. In order to solve these problems, a second vibration roller drum is provided which has a second compaction checking device, whereby the second vibration roller drum is coupled to the first vibration roller drum essentially following it in the same track. In this way, for the comparison of the values determined, the temperature dependence of the measurement values determined is eliminated.Type: GrantFiled: November 22, 2000Date of Patent: April 22, 2003Assignee: Bomag GmbH & Co. oHGInventors: Karl Hermann Mötz, Uwe Blancke
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Patent number: 6551020Abstract: A vibratory mechanism 26 is provided for a compacting work machine 10. The vibratory mechanism 26 includes a first/outer eccentric weight 50 and a second/inner eccentric weight 80. The second weight 80 has a cavity 88 with a movable mass 90 that when rotated in a first direction 124 opposes the first eccentric weight 50 and when rotated in a second direction 126 the movable mass 90 combines with the first eccentric 50. The second eccentric weight 80 is also manually indexable relative to the first eccentric 50 to a plurality of distinct positions giving a plurality of different amplitude vibratory impact forces when rotated in either of the first and second directions 124,126.Type: GrantFiled: July 24, 2001Date of Patent: April 22, 2003Assignee: Caterpillar Paving Products Inc.Inventors: Donald J. Swanson, Dean R. Potts, Gregory H. Dubay, Thomas J. Suelflow
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Publication number: 20030047003Abstract: An apparatus for managing degree of compaction includes: a vehicle speed sensing means which senses a traveling speed of the vehicle; a vibration number setting means by which a number of vibrations of the roll transmitted per unit time is set; a reference vibration number setting means by which a reference number of vibrations of the roll transmitted per unit of longitudinal travel of the vehicle is set; a control means controlling electric signals outputted from the vehicle speed sensing means, the vibration number setting means, and the reference vibration number setting means, respectively; and an indicating means relatively and comparatively indicating, as a vehicle speed index value, magnitude relation of a current number of vibrations of the roll transmitted per unit of longitudinal travel of the vehicle relative to the reference number of vibrations of the roll on the basis of an electric signal outputted from the control means.Type: ApplicationFiled: September 3, 2002Publication date: March 13, 2003Applicant: SAKAI HEAVY INDUSTRIES, LTD.Inventors: Isamu Miyamoto, Shinnosuke Tanaka
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Patent number: 6516679Abstract: The eccentric assembly includes a shaft, first and second eccentric weights, and a member. The first and second eccentric weights are rotatably coupled to the shaft such that they generate vibrations which are transferred to the drum assembly of the vibration compacting machine when the shaft is rotated by a motor. The eccentric weights are also coupled to the shaft by the member which moves the eccentric weights between a first position where the eccentric weights are in phase and a second position where the eccentric weights are out-of-phase. When the eccentric weights are in phase the eccentric assembly generates a maximum moment of eccentricity about the shaft. As the rotational speed of the shaft increases to generate higher frequency vibrations, the eccentric weights move more out of phase reducing the moment of eccentricity generated by the rotating shaft.Type: GrantFiled: January 29, 2001Date of Patent: February 11, 2003Assignee: Ingersoll-Rand CompanyInventors: Steve K. Yates, Vern E. Martin
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Publication number: 20030026657Abstract: The vibration compacting machine includes a frame, a leading drum and a trailing drum. The leading and trailing drums are rotatably mounted to the frame. The leading drum includes a first eccentric assembly that is rotatably mounted inside of the leading drum and the trailing drum includes a second eccentric assembly that is rotatably mounted inside the trailing drum. A first motor rotates the first eccentric assembly and a second motor rotates the second eccentric assembly. Rotations of the eccentric assemblies transfers vibrations to the drums to compact a ground surface. A control adjusts the speed of the first and second motor relative to one another to keep the first eccentric assembly from running in phase with the second eccentric assembly. The control also delays starting the second eccentric assembly relative to the first eccentric assembly to minimize horsepower drain on the engine of the vibration compacting machine.Type: ApplicationFiled: June 6, 2001Publication date: February 6, 2003Applicant: Ingersoll-Rand CompanyInventors: Kenneth E. Gasper, Dale W. Starry, Chad L. Fluent
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Publication number: 20030021629Abstract: A vibratory mechanism 26 is provided for a compacting work machine 10. The vibratory mechanism 26 includes a first/outer eccentric weight 50 and a second/inner eccentric weight 80. The second weight 80 has a cavity 88 with a movable mass 90 that when rotated in a first direction 124 opposes the first eccentric weight 50 and when rotated in a second direction 126 the movable mass 90 combines with the first eccentric 50. The second eccentric weight 80 is also manually indexable relative to the first eccentric 50 to a plurality of distinct positions giving a plurality of different amplitude vibratory impact forces when rotated in either of the first and second directions 124,126.Type: ApplicationFiled: July 24, 2001Publication date: January 30, 2003Inventors: Donald J. Swanson, Dean R. Potts, Gregory H. Dubay, Thomas J. Suelflow
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Publication number: 20030012602Abstract: The eccentric assembly includes a tubular section, an eccentric weight, and a counterweight. The eccentric weight is mounted within the tubular section such that as a motor rotates the eccentric assembly, the eccentric weight generates vibrations that are transferred to the drum assembly of the vibration compacting machine. The counterweight is slidably coupled to the eccentric weight and moves between a first position where the counterweight contacts the eccentric weight and a second position where the counterweight contacts the tubular section.Type: ApplicationFiled: July 10, 2001Publication date: January 16, 2003Applicant: Ingersoll-Rand CompanyInventors: Kent Meyers, Steve K. Yates
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Publication number: 20020197110Abstract: To provide a roller in which the attaching and detaching operation of the crawler is achieved with ease, and a roller which can demonstrates sufficient traveling performance depending on the condition of the ground to be compacted, and a roller which can achieve the compaction of the ground even in the steep sloping ground on stabilizing the vehicle body.Type: ApplicationFiled: February 8, 2002Publication date: December 26, 2002Applicant: SAKAI HEAVY INDUSTRIES, LTD.Inventors: Isao Saito, Koichi Kaneko, Yukitsugu Saba, Yasutsugu Kanamori, Hiroaki Neko
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Publication number: 20020172556Abstract: A work machine 10 for increasing the density of a compactable material 12 includes at least one compacting drum 14 driven by a two-speed drive arrangement 40. Compacting drum 14 also includes a vibratory mechanism 26 that is powered by a hydraulic motor 28. A first input device 54 is used to select the frequency of the vibratory mechanism 26. A second input device is used to select the output speed of the two-speed drive arrangement 40. A third input device 66 is used to select a desired impact spacing of the vibratory mechanism relative to the output speed of the two-speed drive arrangement 40. A controller 52 receives signals from the input devices 54,60,66 and responsively controls the output of a pump 22 automatically propelling the work machine 10 to a speed at which the desired impact spacing is obtained.Type: ApplicationFiled: May 15, 2001Publication date: November 21, 2002Inventors: Greg B. Staffenhagen, Tom J. Suelflow
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Patent number: 6464427Abstract: The invention relates to a compactor comprising at least one drum unit (14, 15) in which a cylindrical drum (21) is rotationally mounted about its axle (40), the at least one drum unit (14, 15) being rotationally mounted about a steering axis (18) on a chassis frame (45) of the compactor (10) and connected to a middle piece (27, 35) rotationally mounted via two opposing maintenance-free angular-contact articulation joints (28, 34) about the steering axis (18) on two trunnions (31) non-rotatively connected to a mounting fixture (16, 17) on the chassis frame (45).Type: GrantFiled: December 11, 2000Date of Patent: October 15, 2002Assignee: Vibromax Bodenverdichtungsmaschinen GmbHInventors: Hans Gottschling, Holger Vetterlein
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Patent number: 6460006Abstract: Compaction performance follows a well behaved response curve for a particular material condition/compaction machine combination. Accordingly, a compaction response curve is determined from measured values representative of material density after a first and second pass by a compaction machine. The response curve is used to predict the number of passes required by the compaction machine to reach a desired density for the material, and thereby avoid making unneeded additional machine passes or passes which would not be effective due to diminished returns. The system may provide an indication when required compaction will not be achieved or will require an excessive number of passes, i.e. such as happens when moisture content of the material is high.Type: GrantFiled: January 25, 1999Date of Patent: October 1, 2002Assignee: Caterpillar IncInventor: Paul T. Corcoran
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Patent number: 6431790Abstract: Method and apparatus for compacting soil and for determining a mechanical characteristic of soil, including a method and apparatus for periodically compacting soil with a soil compacting device so as to make the soil and the soil compacting device vibrate together as a single oscillatory system, analyzing the vibration of the soil and soil compacting device, and adjusting an oscillatory driving force so as to drive the single oscillatory system towards a characteristic resonance frequency &OHgr;.Type: GrantFiled: April 21, 1999Date of Patent: August 13, 2002Assignee: Ammann Verdichtung AGInventors: Roland Anderegg, Hans-Ulrich Leibundgut
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Patent number: 6409425Abstract: A hand guided vibrating roller includes a pair of front and rear roller wheels provided in parallel, a machine supported by the pair of the roller wheels, a hydraulic pump mounted on the machine, hydraulic motors for driving the roller wheels, provided inside the roller wheels, and a steering rod elongating from the rear portion of the machine. It further includes a supporting frame freely rotated around a vertical axis, supporting at least one of the roller wheels, and a steering cylinder for rotating the supporting frame.Type: GrantFiled: October 30, 2000Date of Patent: June 25, 2002Assignee: Sakai Heavy Industries, Ltd.Inventors: Mikio Okabe, Tetsuya Koseki
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Patent number: 6402424Abstract: A vibratory roller R comprises a pair of rolls 5 axially supported at both sides of a body 1 in a cantilevered fashion, a pair of vibration generating devices 6 for vibrating each of the rolls 5, a pair of vibrating motors 7 for driving each of the vibration generating devices 6 and a pair of roll-driving motors 8 for rotating each of the rolls 5. The rolls 5 are connected to each other through the roll-driving motors 8 and by a connecting member 29, and the connecting member 29 is attached to the body 1 through vibration isolating members 30. The vibratory roller R enables a compacting operation with both rolls 5 vibrating simultaneously, and the service life of the vibration isolating members 30 can be extended.Type: GrantFiled: June 1, 2001Date of Patent: June 11, 2002Assignee: Sakai Heavy Industries, Ltd.Inventor: Akira Mitsui
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Patent number: 6386794Abstract: A vibrating drum for soil tamping machines, including a cylindrical tubular skirt adapted to be arranged in abutment against soil to be tamped to which is associated a first hydraulic motor which rotates the tubular skirt around a central shaft to move the tubular skirt forward, and a vibration mechanism to make the tubular skirt vibrate. The vibration mechanism includes a second hydraulic motor coupled to an end of the central shaft and a receptacle fastened to the central shaft which delimits a chamber for containing a liquid in which is partly immersed a draught pipe connected to a hydraulic circuit, which includes a pumping mechanism adapted to change an amount of liquid contained in the chamber so as to change the vibration amplitude of the drum.Type: GrantFiled: July 13, 2000Date of Patent: May 14, 2002Assignee: Bitelli SpAInventor: Romolo Bitelli
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Patent number: 6302620Abstract: A hand guide roller of the manually steering type. A front support frame for supporting a front roller is directly or indirectly turnably connected with a rear support frame for supporting a rear roller at the center part of a roller car main body through a rolling bearing. A vibration generator in the vicinity of the rolling bearing transmits vibration to at least one of the front roller and the rear roller via the rolling bearing.Type: GrantFiled: July 7, 1999Date of Patent: October 16, 2001Assignee: Taikyoku Kenki Co., Ltd.Inventors: Masafumi Mutsuji, Hidetoshi Sawano
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Patent number: 6241420Abstract: A fluid control system (50) is provided for a work machine (10) having first and second compacting drums (14,16). First and second hydraulic motors (28,32) are connected in series and power first and second vibratory mechanisms (26,30) located within the first and second compacting drums (14,16). A control valve (60) supplies pressurized fluid to the first hydraulic motor (28). The pressurized fluid is transferred through a bypass circuit (74) around the second hydraulic motor (32). A sequencing device (80) closes the bypass circuit (74) transferring the pressurized fluid to the second hydraulic motor (32) after actuation of the first hydraulic motor (28).Type: GrantFiled: August 31, 1999Date of Patent: June 5, 2001Assignee: Caterpillar Paving Products Inc.Inventors: Jacques Perrin, Gerard Debrock
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Patent number: 6224293Abstract: A vibration generator includes a weight member, a shaft rotatable about an axis of rotation extending longitudinally therethrough and having a mounting area on which the weight member is mounted, and a positioning arm disposed in engagement with the weight member on the shaft and rotatable about the axis of rotation relative to both the shaft and the weight member. The mounting area engages the weight member and prevents movement of the weight member relative to the shaft in a circumferential direction about the axis of rotation but permits movement of the weight member relative to the shaft in a radial direction orthogonal to the axis of rotation and coplanar with the circumferential direction. The weight member also defines an elongate positioning slot and the positioning arm includes an axially extending portion disposed through the positioning slot for slidable movement within the positioning slot during rotation of the positioning member relative to the shaft.Type: GrantFiled: April 19, 1999Date of Patent: May 1, 2001Assignee: Compaction America, Inc.Inventor: William M. Smith
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Patent number: 6200066Abstract: A self-propelled vibratory greensroller for smoothing a green, improving ball roll distance and striping. The greensroller has a vibratory roller and a power roller mounted in a frame with the vibratory roller in front of and parallel to the power roller. A prime mover mounted on the frame has a gear box with two power-take offs for connection to a first and second power train. The power roller is divided into right and left sections connected with a differential such that the roller sections do not scuff the green. The first power train includes, a centrifugal clutch which starts the vibratory roller into vibration at some preselected engine speed. The second power train includes a variable speed pulley providing infinite ground speed control for the power roller.Type: GrantFiled: February 4, 1999Date of Patent: March 13, 2001Inventor: John L. Humphrey
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Patent number: 6132133Abstract: A crawler type vibratory compacting machine of the invention compacts the ground from a surface layer to a deep layer with high efficiency. The crawler type vibratory compacting machine comprises: a triangular crawler unit which includes one wide track (35) or a plurality of juxtaposed tracks (35a, 35b, 35c) wound around wheels (32, 34) arranged along the length of and above a track frame (31); and a vibrator (40) which is housed in the crawler unit. The crawler unit has opposite lateral ends of its center coupled via a first lateral shaft (23) and pins, to an arm (20) which extends from a vehicle body (10) having an operators seat (11).Type: GrantFiled: December 10, 1998Date of Patent: October 17, 2000Assignee: Komatsu Ltd.Inventors: Tatsuro Muro, Hiroyuki Inoue, Kazuhiro Yoshida, Tatsuo Ohashi
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Patent number: 6109111Abstract: In a concrete finishing machine having a plurality of vibrators to be at least partially submerged in concrete or other semi-fluid viscous material for vibration thereof, a monitor is provided for displaying and/or recording operational parameters of the plurality of vibrators. The monitor includes a display, responsive to signals generated by sensors operatively associated with the plurality of vibrators, for providing a visual indication of operating parameters for the plurality of vibrators, and a recording device receiving the signals generated by sensors operatively associated with the plurality of vibrators and recording the operating parameters for the plurality of vibrators.Type: GrantFiled: December 17, 1998Date of Patent: August 29, 2000Assignee: Racine Federated Inc.Inventors: Glenn A. Heimbruch, James Chaplin
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Patent number: 6065904Abstract: An apparatus for monitoring soil compaction using a compaction machine which applies periodic impact blows to the soil surface. The apparatus comprising a rotatable, multi-sided compactor mass that applies periodic impact blows to the soil surface when rolled over that surface. Data related to the level of compaction of the soil surface is derived, during compaction of the soil surface, from the deceleration of the compactor mass as it impacts the soil surface. This is achieved using one or more accelerometers mounted on the impact compactor.Type: GrantFiled: June 18, 1999Date of Patent: May 23, 2000Assignee: Compaction Technology (Soil) LimitedInventors: Eric Johnstone Cook, Aubrey Ralph Berrange
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Patent number: 6055486Abstract: A concrete paving system of a variety employing an array of vibrators which consolidate dispersed concrete over a roadbed or the like as the concrete is introduced to the mouth of a slipform pan or mold. The rate of vibration of these vibrators is monitored utilizing an accelerometer in conjunction with a vibration conversion network treating the acceleration signals to derive vibration rate data. The vibration rate data then is used with a monitor and control function employing a user inputted RPM and ground speed based algorithm to derive an RPM error output which is summed with the then existing control current applied to the solenoid function of a proportional control valve to adjust the flow of hydraulic fluid from a constant fluid flow source to a hydraulic motor within a vibrator. A controller with the system provides for the development of upper limit and lower threshold alarm limits which may be displayed along with audible warnings.Type: GrantFiled: November 9, 1999Date of Patent: April 25, 2000Assignee: Minnich Manufacturing Company Inc.Inventors: James R. Minnich, Lloyd R. Mawhorr, James G. Scharf
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Patent number: 6004076Abstract: A method of monitoring of the level of compaction of a soil surface undergoing compaction by an impact compactor which includes a rotatable, multi-sided compactor mass that applies periodic impact blows to the soil surface when rolled over that surface. In accordance with the invention, data related to the level of compaction of the soil surface is derived, during compaction of the soil surface, from the deceleration of the compactor mass as it impacts the soil surface. This is achieved using one or more accelerometers mounted on the impact compactor.Type: GrantFiled: December 23, 1997Date of Patent: December 21, 1999Assignee: Compaction Technology (Soil) LimitedInventors: Eric Johnstone Cook, Aubrey Ralph Berrange
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Patent number: 5984572Abstract: To be able to start and stop vibration without resonating a vibratory body as well as to prevent a drawback of a conventional technology in which when a vibration generating shaft is rotated at a high speed, a torsional coil spring is worn by being brought into abrasive contact with a bent support member and a receiving seat and a large sound is generated when a main weight returns in an axial direction of the vibration generating shaft, there is provided a vibratory generating mechanism having a movable eccentric weight 4 rotatable around a pivoting shaft 3, a sliding member 11 capable of linearly moving on the axial line of the vibration generating shaft along a guide member 6 at one end of the vibration generating shaft, a connecting rod 12 one end of which is connected to the sliding member and other end of which is connected to the movable eccentric weight for transforming a displacement of a linear movement of the sliding member into a displacement of a rotational movement around a pivoting shaft of theType: GrantFiled: December 9, 1997Date of Patent: November 16, 1999Assignee: Sakai Heavy Industries, Inc.Inventor: Akira Mitsui
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Patent number: 5983165Abstract: A concrete paving system of a variety employing an array of vibrators which consolidate dispersed concrete over a roadbed or the like as the concrete is introduced to the mouth of a slipform pan or mold. The rate of vibration of these vibrators is monitored utilizing an accelerometer in conjunction with a vibration conversion network treating the acceleration signals to deriving vibration rate data which is published for each vibrator at a display. A controller with the system provides for the development of upper limit and lower threshold alarm limits which may be displayed along with audible warnings. Such vibration transducer based monitoring system also may be used for rotational component performance monitoring as well as in conjunction with probes located within distributed concrete in the vicinity of the array of consolidation vibrators to evaluate the performance of the latter. The monitoring system also is employable with the vibratory components of dowel bar insertion assemblies.Type: GrantFiled: June 4, 1997Date of Patent: November 9, 1999Assignee: Minnich/ Maginnis Mfg. Co., Inc.Inventors: James R. Minnich, Lloyd R. Mawhorr, Neil E. Schipper
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Patent number: 5967695Abstract: A vehicle for repairing a damaged road surface by filling depressions within the road surface with a filling material has, in a direction of travel, a heating and scraping unit for removing excess road surface material from the road surface. It further has a depositing device for a filling material. A first dynamic compacting device is arranged downstream of depositing device for compacting the filling material to a level higher than a level of an adjacent undamaged area of the road surface. A doctor blade unit is connected to the depositing device so as to act downstream of the first dynamic compacting device onto the filling material for removing excess filling material. The doctor blade unit pivots horizontally in a direction perpendicular to the direction of travel. The doctor blade unit is vertically adjustable relative to the first dynamic compacting device and the depositing device. A second dynamic compacting device is arranged downstream of the doctor blade unit.Type: GrantFiled: December 20, 1996Date of Patent: October 19, 1999Assignee: Wacker Werke GmbH & Co. KGInventor: Gulertan Vural