Conveyer Patents (Class 177/119)
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Patent number: 5945638Abstract: A weighing apparatus for weighing a flowable material being conveyed along a distribution system from a source downstream towards a user location, comprises a product carrying surface which has an upstream end and a downstream end, a first axis extending from the upstream end in the intended direction of product flow, and side walls upstanding on the product carrying surface. A base is also provided for supporting the product canying surface. A support supports the product carrying surface on the base to allow flexing of the downstream end of the product carrying surface in a vertical direction about a second axis extending transversely of the first axis, in response to weight of product on the product carrying surface. A load cell monitors the amplitude of flexing of the product carrying surface and provides a signal representative of the weight of the product on the surface in dependence on the amplitude.Type: GrantFiled: April 28, 1997Date of Patent: August 31, 1999Assignee: KMG Systems LimitedInventor: Keith Lever Maddocks
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Patent number: 5942732Abstract: A final stage automatic weigh and count filling machine feed mechanism is described. The invention is a refinement for machinery used to produce standard quantities of piece parts for subsequent packaging. In general these machines use a series of vibrating feed trays to move a flow of piece parts from a bulk supply into a batching hopper that includes a weighing means. A precise weight is correlated with a part count for a given part. As the desired weight is approached, electronic signals are generated by the weighing means to regulate the speed of vibration applied to the trays or to terminate the vibration altogether. The refinement in the present invention is a trickle feed pan that is affixed to a mounting rail which extends up through an opening in a final stage bulk feed pan. The final stage bulk feed pan and trickle feed pan are mounted on separate vibratory drive mechanisms that are independently controlled.Type: GrantFiled: April 13, 1998Date of Patent: August 24, 1999Inventor: Robert Holmes
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Patent number: 5927924Abstract: The invention relates to a hopper discharging and charging plate conveyor with automatic weighing and apportioning device for bulk materials of all types, there being arranged in the conveying path of the plate conveyor (1) a weighing station (15) which is formed by a weighing bridge which is displaced on load cells (16) or the like and, during conveying operation, determines the bearing weight of the loaded conveying belt by way of repeated measurements. In order to achieve precise weighing results, the horizontal tensile forces of the drawing elements (6), which comprise flat-link chains for example, are isolated from the vertical bearing forces measured at the weighing bridge, this resulting from the fact that the drawing elements (6) are connected to the plate elements (7) of the plate conveyor so as to be freely movable to a limited extent in the vertical direction, and this connection preferably being made via transverse bolts with vertical play in the bolt holes.Type: GrantFiled: January 2, 1998Date of Patent: July 27, 1999Assignee: Maschinenfabrik Besta GmbH & Co.Inventors: Friedrich Kemmer, Hendrik Schnelle, Adolf Ulzhofer
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Patent number: 5929387Abstract: A mechanism for weighing articles including a continuous thread screw conveyor for moving articles to be weighed across a weigh pan in combination with a motor for first driving the conveyor in an article transport direction through an angle of 360.degree.+.alpha..degree. and then driving the conveyor in a reverse direction through an angle of .alpha..degree. to remove the conveyor from frictional engagement with the article, during each article weighing operation.Type: GrantFiled: June 16, 1997Date of Patent: July 27, 1999Assignee: Hi-Speed Checkweigher Co., Inc.Inventor: Eric A. Inglin
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Patent number: 5895678Abstract: A method and apparatus for applying a material to a substrate. A material application station includes a shutter assembly having at least one horizontally extending blade which is rapidly displaceable from a closed configuration in which an outlet path of the shutter assembly is obstructed to an open configuration in which the outlet path is open. While the blade of the shutter assembly is in the closed configuration, a coating material is applied to a first predetermined area on an upper surface of the shutter assembly. A substrate is located beneath the shutter assembly in the outlet path. The blade of the shutter assembly is rapidly opened so that the coating material falls onto the substrate over a second predetermined area on an upper surface of the substrate. The second predetermined area is substantially equal to the first predetermined area. The resulting deposit is of a controlled diameter.Type: GrantFiled: January 30, 1997Date of Patent: April 20, 1999Assignee: Ishida Co., Ltd.Inventor: Adrian M. Sunter
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Patent number: 5883336Abstract: A lot control and part handling apparatus having a base adapted to support the apparatus and a plurality of containers. Each of the containers is shaped to be filled with and retain therein multiple parts having a predetermined cumulative weight. A container support table is mounted on the base for rotation about a generally vertical axis and has a plurality of container support stations on which the containers are removably supported. A motor selectively rotates the container support table to sequentially position each of the container support stations at a fill position at which the parts are loaded into one of the containers. A weighing apparatus is positioned in vertical registry with the fill position and includes a scale with a vertically reciprocating lift member thereon which selectively and sequentially engages an associated one of the containers.Type: GrantFiled: March 19, 1997Date of Patent: March 16, 1999Assignee: Accra-Wire Controls Inc.Inventor: Johnnie L. Jones
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Patent number: 5880407Abstract: An apparatus for dispensing materials, the apparatus having a container for gravitationally receiving the materials in a collection position; a control mechanism for selective dispensing of the materials from the collection position; and a suspension assembly, operable to support the container in an operational position, and to measure the materials in the collection position before said selective dispensing by the control mechanism of the materials from the collection position.Type: GrantFiled: March 29, 1996Date of Patent: March 9, 1999Inventor: John D. Flammang
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Patent number: 5804772Abstract: Apparatus and a method for aggregating a desired number of articles without individually counting out each article to achieve the desired number. A stream of the articles is discharged into a weigh hopper until substantially a predetermined weight of articles is in the hopper. The number of articles in the hopper is determined from the total weight of the hopper and the weight of a single article. Additional articles are caused to enter the hopper one-by-one until the desired total number of articles is contained in the hopper. The contents of the hopper are then packaged for distribution.Type: GrantFiled: October 4, 1996Date of Patent: September 8, 1998Assignee: Batching Systems, Inc.Inventors: Donald R. Wooldridge, John L. Ditman
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Patent number: 5796052Abstract: The conveyor (1) includes a telescoping conveyor (2) with a boxlike basic body (9), above which a separating conveyor (3) and a weighing device (4) are located, thereby saving space which would be necessary if the separating conveyor (3) and the weighing device (4) were set up separately.Type: GrantFiled: August 10, 1995Date of Patent: August 18, 1998Assignee: Caljan A/SInventor: Jurgen Christmann
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Patent number: 5796051Abstract: A process and apparatus for in-line capsule check weighing envisages that the capsules to be weighed be fed to a device which separates them and feeds them over a transfer surface. The capsules are positioned over the transfer surface so that their longitudinal axes are horizontal and transversal to the direction of feed and are fed to the checkweigher pans, which have seats in the transfer surface and are attached to checkweigher transducers. The weight reading for the capsules and of the relative pans is obtained at the moment in which the capsules come to rest on the pans. Finally, the weight of the pans is determined after the capsules have been moved away, so that the net weight of the capsules may be calculated.Type: GrantFiled: June 1, 1995Date of Patent: August 18, 1998Assignee: Macofar S.p.A.Inventors: Franco Chiari, Bruno Zanarini
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Patent number: 5780780Abstract: A weighing vibratory apparatus and method. In one embodiment, an infeed vibratory conveyor element feeds a bulk product to a weighing vibratory conveyor element. In another embodiment, bulk product is fed directly to a weighing vibratory conveyor element and flow rate is determined by measuring the loss of weight therefrom. The weighing vibratory conveyor element includes a weight measuring apparatus that weighs the product at the same time that the product is being dispensed through vibrations. The weight measuring apparatus may be coupled to the vibratory conveyor element through damping mechanisms. An electrical signal output of the weight measuring apparatus may be low-pass filtered to provide an improved signal for feeding to a controller for controlling the flow rate.Type: GrantFiled: January 17, 1997Date of Patent: July 14, 1998Inventor: Gulzar Ahmed
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Patent number: 5767455Abstract: Apparatus and methods are shown for controlling a weighing machine in which product is fed into one end a vibratable pan of a vibratory feeder and is discharged from the other end, for example into a weigh bucket. In a first embodiment, the amplitude of vibration of a pan is measured and is compared to a desired amplitude. The measured amplitude is compared to a desired amplitude, and the amplitude of vibration is adjusted by modifying an input signal to a vibrator attached to the pan until the measured amplitude equals the desired amplitude. In a second embodiment, a mechanism is included to stop the loading of product into a pan when a predetermined amount of product has been discharged from a pan into a weigh bucket, and the weight of product in the pan is monitored as additional product is discharged into the weigh bucket Only a preselected additional weight of product is subsequently discharged into the weigh bucket.Type: GrantFiled: February 26, 1997Date of Patent: June 16, 1998Assignee: Upper Limits Engineering Co.Inventor: Oren A. Mosher
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Patent number: 5753866Abstract: A combinational weigher measures articles with a plurality of measuring devices and selects a combination of the articles with a total weight within an allowable range. The weigher has a device for supplying the articles, cameras for taking pictures of at least either this article supplying device or the articles thereon, an image processing device for determining the condition of the article supply on the basis of image signals from the cameras, a predicting device for predicting the change in the amount of the supplied articles on the basis at least of the condition thus determined, and a control device for changing the operating conditions of the supplying device on the basis of this prediction so as to control changes in the supply rates of articles to the measuring devices.Type: GrantFiled: June 24, 1996Date of Patent: May 19, 1998Assignee: Ishida Co., Ltd.Inventors: Tetsuo Ikeda, Yukio Wakasa, Tohru Morichi
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Patent number: 5736682Abstract: The mass of rod-shaped articles of the tobacco processing industry is ascertained by advancing a multi-layer mass flow of plain or filter cigarettes or analogous rod-shaped articles of the tobacco processing industry over one or more stationary and/or mobile weighing devices which generate signals denoting the combined weight of articles in successive increments of the mass flow. Such signals are processed with signals denoting the numbers of articles in the respective increments and/or with signals denoting the speed of advancement of the mass flow to generate signals denoting the average mass of discrete articles in successive increments of the mass flow.Type: GrantFiled: March 22, 1996Date of Patent: April 7, 1998Assignee: Hauni Machinenbau AGInventors: Uwe Heitmann, Torsten Morke
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Patent number: 5726394Abstract: The invention relates to an apparatus for charging a weighing device arranged upstream of a packaging device with fragile foodstuffs of irregular size, in particular potato chips (4), comprising a dosing trough (1) with a free discharge side (8), a weighing container (3) and/or a storage container (2) arranged upstream of the weighing container (3). The dosing trough (1) is closed off at its free discharge side (8) by an end wall (9) and a discharge opening (10) is provided in the base (5) of the dosing trough (1) at the discharge side (8). The size of the discharge opening (10) defines a maximum target size relative to the size of the respective foodstuff (4) to be weighed and packaged. The base (5) of the dosing trough (1) forms an edge region (11) about the discharge opening (10) and a support for the foodstuff (4) exceeding the target size.Type: GrantFiled: September 21, 1994Date of Patent: March 10, 1998Assignee: Multipond GmbHInventors: Wilhelm Ludwig Kramer sen., Wilhelm Ludwig Kramer jun., Josef Schmidhuber
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Patent number: 5717165Abstract: An apparatus has a transport mechanism for transporting mailpieces to a printing and weighing station. The apparatus also includes a weighing device; a printing mechanism operatively associated with the weighing device to form the printing and weighing station; a carriage assembly moveably mounted in the apparatus, the printing mechanism removeably supported on the carriage assembly to move therewith between the printing and weighing station and at least a second station; and structure to transfer complete support of the printing mechanism from the carriage assembly to the weighing device during movement of the printing mechanism into the printing and weighing station.Type: GrantFiled: October 13, 1995Date of Patent: February 10, 1998Assignee: Pitney Bowes Inc.Inventors: Steven E. Cohen, Dean H. Foster, James A. Salomon
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Patent number: 5703332Abstract: An apparatus comprising a conveyor (1) having article holders for conveying vulnerable articles (V), such as for instance fruits, in the article holders (2), the artices (V) during conveyance being subjected to a treatment for the purpose of the classification of the products, such as for instance a weighing treatment, the article holders being grippers (2) adapted to assume two stable positions, i.e. a gripping position wherein the articles (V) are grippingly receivable in the gripper, and a release position wherein articles (V) received in the gripper (2) are released in downward direction, the grippers (2) being designed so that in the gripping position articles (V) of different dimensions are receivable therein.Type: GrantFiled: June 13, 1995Date of Patent: December 30, 1997Inventor: Adrianus Wilhelmus Tas
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Patent number: 5696354Abstract: A scale for weighing material as it is transported along a movable conveyor is disclosed as including a pair of wheatstone bridge load cell assemblies which are mounted subjacent and across a roller assembly forming a part of the conveyor. The entire scale assembly is mounted between the framework stringers of the conveyor by a pair of inexpensive IPS pipes. In accordance with the invention, the entire scale assembly is mountable on differing width conveyor systems simply by changing the lengths of the IPS pipe portions of the scale framework so as to fit the frame on the respective stringers. Input into the dual wheatstone bridge circuits is fed into a computer, along with input relating to the speed (displacement) of conveyor movement to provide data needed for calculating a number of potential output figures. Remote display and monitoring of numerous such conveyor scales provides for ease of monitoring multiple conveyor systems.Type: GrantFiled: March 30, 1994Date of Patent: December 9, 1997Assignee: Sauk Valley Systems, Inc.Inventors: Richard D. Linville, Jr., Roy E. Meyer, Doran R. Dockstader
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Patent number: 5689092Abstract: A conveyor scale assembly for use in combination with a conveyor belt for weighing an article on the moving conveyor belt. The conveyor scale assembly is comprised of a slider bed which contacts the underside of the moving conveyor belt which generates a friction force between the conveyor belt and the slider bed. Attached to the slider bed is a sensor which continuously measures the friction force and transmits data representing the measured friction force. A CPU receives and processes the representative data and provides a weight for the article on the conveyor belt.Type: GrantFiled: June 12, 1996Date of Patent: November 18, 1997Assignee: Accu-Sort Systems, Inc.Inventors: Albert Wurz, William Scott, Richard Skokowski
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Patent number: 5684275Abstract: The present invention provides a conveyorized system for weighing and labeling products in packages and having multiple conveyor sections each of which is driven by an individual variable speed motor. A computer is supplied and connected to each of the variable speed motors. The computer contains data relating speed of operating each motor for a particular package style in the computer memory. An operator inputs a package code to the computer, which locates the package information stored in memory and signals the variable speed motors as to the desired speed for each conveyor. Similar information is maintained in the computer memory for each package as to dimensions, such that the computer signal output includes commands to several servo motors which are connected to adjust spacing between vertical control belts to accommodate the package and the positioning of a label applicator to suit.Type: GrantFiled: January 17, 1995Date of Patent: November 4, 1997Assignee: Ossid CorporationInventor: Sidney S. Tolson
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Patent number: 5670752Abstract: In a weighing conveyor, a driving roller includes an inner cylinder and an outer cylinder. The outer cylinder is rotatably supported on the inner cylinder. An endless belt is laid over the outer cylinder. An electric motor and a load cell are built in the inner cylinder. The motor drives the outer cylinder through a reduction gear mechanism.Type: GrantFiled: April 25, 1994Date of Patent: September 23, 1997Assignee: Ishida Co., Ltd.Inventor: Masayoshi Nakajima
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Patent number: 5646374Abstract: A vibratory conveyor for a combination weigher or the like includes an elongated trough having inlet and outlet ends and a pair of upwardly extending and outwardly flared side walls. The conveyor also includes a pair of ramps for lifting and slowing a flow of particulate material as it is conveyed along the length of the conveyor. A first of the ramps includes a relatively flat base portion and two sloping side portions that converge at the apex of a V-shaped end portion to bias the flowing material toward the center of the trough. A second ramp has a relatively flat portion and further slows the flow of material so that it drops off of the outlet end of the conveyor in a mere trickle.Type: GrantFiled: December 6, 1994Date of Patent: July 8, 1997Assignee: The Paxall Group, Inc.Inventors: Richard E. Stapp, David R. Crowson
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Patent number: 5637836Abstract: A constant-rate feeding device can weigh out, with high accuracy and at a high rate, a powdery material containing fibrous substances and thus having a high entangling tendency, such as a material for a friction member. A powdery material A supplied from a belt feeder (17) is divided into a plurality of masses by a first vane wheel (3) and dropped onto a damper provided under the vane wheel. The powdery material deposited on the damper is divided into small masses and discharged by moving vanes (5a) of a second vane wheel (5) through openings (4a) of the damper. Thus, the material can be fed and weighed out with high accuracy. The damper (4) is moved out of the feed path of the material except during the final stage of weighing operation for increased weighing speed. The damper (4) may comprise a plurality of movable comb teeth. By moving or turning the comb teeth relative to one another, it is possible to adjust the area of the opening of the damper and thus the feed rate of the material with high accuracy.Type: GrantFiled: March 18, 1994Date of Patent: June 10, 1997Assignee: Sumitomo Electric Industries, Ltd.Inventors: Mitsuhiko Nakagawa, Hatsuo Murakami, Keisuke Fujiki, Toshikazu Kogetsu
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Patent number: 5590976Abstract: A mobile paving system (10) is provided that produces paving material while the mobile system (10) proceeds over a surface. The mobile paving system (10) includes an aggregate hopper (12) operable to hold aggregate for use in producing paving material and a mixer (24) operable to mix aggregate with remaining ingredients to produce paving material. A moisture sensor (47) is associated with the aggregate. The moisture sensor (47) is operable to measure moisture in the aggregate and to provide an output representing an amount of moisture measured. A processor (34) is operable to receive an input representing the amount of moisture measured. The processor (34) is further operable to determine a dry weight of aggregate by converting from to dry weight volume used to produce paving material using bulking effect data for the aggregate corresponding to the amount of moisture measured.Type: GrantFiled: May 30, 1995Date of Patent: January 7, 1997Assignee: Akzo Nobel Ashpalt Applications, Inc.Inventors: Kenneth E. Kilheffer, Calvin L. Stegemoeller, Lesley T. Hays
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Patent number: 5591942Abstract: An integrating system for measuring the total weight of material moved by an endless belt conveyor over a weighing scale. The system compensates for the effect of temperature upon the dimensions of the structures that transmit belt loading forces to the load cell. A temperature responsive transducer at the conveyor provides an input to a temperature compensating multiplier which introduces a temperature compensating factor into the weight computation.Type: GrantFiled: November 8, 1993Date of Patent: January 7, 1997Assignee: Hyer Industries, Inc.Inventor: Frank S. Hyer
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Patent number: 5567919Abstract: A gravimetric control system for supplying fuel and sorbent to a circulating fluidized bed boiler which includes a loop shaped continuous belt for moving materials in a generally horizontal direction. The apparatus includes first and second belt scales disposed at spaced axial points along the belt and apparatus for continuously moving the belt sequentially past the first belt scale and then past the second belt second belt scale and then dumping all material on the belt.Type: GrantFiled: December 22, 1993Date of Patent: October 22, 1996Assignee: Combustion Engineering, Inc.Inventor: Gary A. Cote
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Patent number: 5547034Abstract: A conveyor scale assembly for use in combination with a conveyor belt for weighing an article on the moving conveyor belt. The conveyor scale assembly is comprised of a slider bed which contacts the underside of the moving conveyor belt which generates a friction force between the conveyor belt and the slider bed. Attached to the slider bed is a sensor which continuously measures the friction force and transmits data representing the measured friction force. A CPU receives and processes the representative data and provides a weight for the article on the conveyor belt.Type: GrantFiled: January 10, 1994Date of Patent: August 20, 1996Assignee: Accu-Sort Systems, Inc.Inventors: Albert Wurz, William Scott, Richard Skokowski
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Patent number: 5409020Abstract: A method of controlling tobacco flow on cigarette manufacturing machines, whereby a first stream of shredded tobacco, containing tobacco in excess of the required amount, is fed on a conveyor along a path extending through a shaving station where the excess tobacco is removed by shaving members cooperating with the first stream; the shaved-off tobacco being removed by a throwing device, which forms a jet of tobacco, at the output of the shaving station, directed on to a screen connected to a load cell for emitting a control signal varying according to the kinetic energy transmitted by the jet to the screen.Type: GrantFiled: April 11, 1994Date of Patent: April 25, 1995Assignee: G. D. Societa per AzioniInventor: Bruno Belvederi
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Patent number: 5338901Abstract: A conveyor belt scale of the weighbridge type is disclosed having a frame mountable above a run of conveyor belt idler, the weighbridge having a pair of weight transfer bars extending from each end of the device to support the entire weight of the weighbridge and conveyor belt, each of the weight transfer bars being cooperatively connected to a load cell apparatus, each pair of load cells at an end of the device is cooperatively connected by a strain gauge disposed to measure deflections of the load cells under the weight and tortional movement of material passing along the conveyor. The apparatus further contains a speed sensor device to measure the speed at which material moves along the conveyor and a programmable computerized integrator apparatus which accepts the information from the strain gauges and from the speed sensor to give a digital readout of an estimated weight and volume of material passing along the weighbridge at any given time.Type: GrantFiled: June 22, 1992Date of Patent: August 16, 1994Assignee: Kaskaskia Valley Scale CompanyInventor: Ron Dietrich
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Patent number: 5308930Abstract: A weighing machine has a weighing conveyor with a conveyor belt supported by a load cell and uses a digital filter to eliminate high-frequency components of weight signals from the weighing conveyor. In order to improve accuracy of measurement, operating conditions of the digital filter are set with regard to the length of the object to be weighed. Alternatively, time required for the object to be completely on the conveyor belt may be calculated or the timing for the zero-point adjustment for the load cell may be adjusted accordingly.Type: GrantFiled: October 28, 1992Date of Patent: May 3, 1994Assignee: Ishida Scales Mfg. Co., Ltd.Inventors: Harunori Tokutu, Shoko Tajiiri, Yukio Wakasa
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Patent number: 5300736Abstract: A method and apparatus for an in-motion weighing system which includes a package conveyor, a weigh pan, a package detector positioned adjacent to the conveyor and upstream from the weigh pan, a timer for determining the time required for a package to pass by the package detector, means for storing the time required for a point on the conveyor to transition the weigh pan, means for subtracting the package passing time from the weigh pan transition time for establishing a read scale window, and a means for measuring the average weight of a package on the weigh pan during the read scale window.Type: GrantFiled: March 12, 1992Date of Patent: April 5, 1994Assignee: Hi-Speed Checkweigher Co., Inc.Inventor: Steven P. Ehrhardt
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Patent number: 5296654Abstract: A universal belt scale for measuring the weight of material being transported on a conveyor belt includes a pair of independent weigh beams, each having a cantilevered deflection section, the beams being uniquely mounted to extend inwardly of the stringers in such a way that the universal belt scale can be used with a variety of belt widths and belt loading situations. The neutral axis of the deflection section is preferably positioned in substantially the same plane as the roll supporting the belt. Alternative embodiments of a mounting allows the position of the weigh beam to be adjusted relative to the idler assembly. Alternative embodiments of an adjustable pivot allow the full scale capacity of the belt scale to be varied. The universal belt scale may also include varying the sensitivity of the weigh beam, for more accurate weighing.Type: GrantFiled: December 20, 1991Date of Patent: March 22, 1994Assignee: CST AutoweightInventors: Paul W. Farley, Chester L. Nachtigal, Gerald J. Berger, Harold J. Klits
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Patent number: 5294756Abstract: A scale apparatus is provided for weighing material moving on a conveyor belt supported by an idler assembly. The apparatus includes a load cell support and a load cell having a base and a contact portion extending upwardly away from the base. The base of the load cell is configured to bend in response to a vertical force being applied to the contact portion to generate an output signal proportional to the force. The load cell is non-responsive to horizontal forces. The load cell is coupled to the load cell support, and the load cell support is coupled to a conveyor frame to suspend the load cell below the conveyor belt. The apparatus further includes an idler support for supporting the idler assembly. The idler support is coupled to the contact portion of the load cell.Type: GrantFiled: May 5, 1992Date of Patent: March 15, 1994Assignee: Endress+Hauser Inc.Inventors: Jurgen Lauber, Eric Wainwright
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Patent number: 5285019Abstract: A scale apparatus is provided for weighing material moving in a downstream direction on a conveyor belt supported by a conveyor frame. The apparatus includes an upstream idler station, a downstream idler station, and a measuring idler station situated between the upstream idler station and the downstream idler station. The apparatus also includes a mechanism for measuring the weight of material moving on the conveyor belt. The measuring mechanism is coupled to the measuring idler station. The upstream idler station, the measuring idler station, and the downstream idler station are coupled together to form a scale unit. The scale unit is coupled to the conveyor frame so that the conveyor belt passes over the upstream idler station, the measuring idler station, and the downstream idler station.Type: GrantFiled: September 16, 1992Date of Patent: February 8, 1994Assignee: Endress + Hauser Inc.Inventors: David Kempf, Juergen Lauber
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Patent number: 5044819Abstract: A paving system (10) is described which comprises an aggregate hopper (12), a mineral filler hopper (14), water tank (16), an emulsion tank (18) and an additive tank (20). Aggregate, mineral filler, water, emulsion and additive are conveyed from their respective storage devices into a mixer (24) where they are mixed into paving material. A processor (34) is used in conjunction with a load cell (28), an auger tachometer (50) and flow meters (58), (62) and (66) to continuously monitor the relative amounts of aggregate mineral filler, water, emulsion and additives in the paving material mixture manufactured by system (10). A ground speed sensor (74) senses the speed of a vehicle (76) so that the processor (34) may also figure an application rate of paving material. Manual controls (46) may be used by an operator to alter the amounts of aggregate, mineral filler, water, emulsion or additive in the paving material mixture.Type: GrantFiled: February 12, 1990Date of Patent: September 3, 1991Assignee: Scanroad, Inc.Inventors: Kenneth E. Kilheffer, Keith B. Mosley, Robert J. Province
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Patent number: 4966273Abstract: There is disclosed a precision distributive supply device for use in a combinatorial weighing apparatus. The distributive supply device includes tubular chutes disposed at article discharging portions of an article supply container and having lower ends spaced a suitable distance from the bottom plates of supply troughs.Type: GrantFiled: December 29, 1989Date of Patent: October 30, 1990Assignee: Kabushiki Kaisha Ishida Koki SeisakushoInventor: Takashi Sashiki
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Patent number: 4948542Abstract: The abstract related herein is a device for continuously weighing a web during formation thereof such that uniformity can be promoted in a continuous process. A method for forming fiber board is also disclosed.Type: GrantFiled: April 5, 1989Date of Patent: August 14, 1990Assignee: Sunds Defibrator AktiebolagInventor: Per A. Asberg
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Patent number: 4874049Abstract: A method and apparatus for accumulating a load having a desired weight, and then transferring the load to a reversible conveyor. The reversible conveyor extends between a pair of unloading stations, and is capable of delivering the load to either one of the unloading stations, depending upon the direction in which it is driven. In one class of preferred embodiments, the inventive apparatus is portable, and is capable of weighing out selected amounts of any of a variety of products (for example, frozen fish or other foods). In one such embodiment, the invention includes a single gated bin which feeds a single weighing hopper, and a vibrating conveyor mounted on a vibration-absorbing frame assembly for feeding the gated bin. The weighing hopper (which does not vibrate) feeds as reversible conveyor, and the reversible conveyor in turn feeds two unloading stations.Type: GrantFiled: February 3, 1989Date of Patent: October 17, 1989Assignee: Kee Equipment and EngineeringInventors: Howard Kee, Frederick Goff
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Patent number: 4788930Abstract: A weigh scale for a variable inclination conveyor includes an idler or other support for part of an upper belt run of the conveyor, the support being associated with sensors for determining loadings applied to the belt run perpendicular to the direction of the conveyor, and a compensating unit receiving the sensor output calculating the weight of material on the conveyor causing the loading, the unit including a clinometer, and a computing device for causing the sensor output to be modulated by the secant of the angle of the conveyor to the horizontal as sensed by the clinometer.Type: GrantFiled: October 26, 1987Date of Patent: December 6, 1988Assignee: Canadian Corporate Management Company LimitedInventors: Luc C. Matteau, Ralph D. Closs
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Patent number: 4703783Abstract: The spread of particles which might otherwise be unevenly deposited upon a moving surface is equalized in accordance with a rated density distribution of the particle mass. The density distribution is determined across the particle mass and the particle distribution is varied so that the stream deposited upon the moving surface is uniform and in accord with a given density distribution.Type: GrantFiled: January 9, 1987Date of Patent: November 3, 1987Assignee: Carl Schenck AG.Inventor: Andrej Buksek
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Patent number: 4592434Abstract: A produce weighing and selecting mechanism is disclosed where the feed system 8 is driven by a single drive means. The feed system 8 contains roller conveyors made up of rollers of discontinuous diameter alternating with rollers of constant diameter where the discontinuous rollers are rotated in a direction opposite the direction in which the conveyed objects are driven in order to sort the objects by size, before their presentation to a second transport means which presents the sorted objects singly to a third transport means. The third transport means possesses arms which gather up the singulated objects and transport them to a weigher, which possesses a slotted plate to support the object to be weighed as the arms of the third transport means pass through the slotted plate. Weighed objects are then ejected to a packaging apparatus.Type: GrantFiled: May 16, 1984Date of Patent: June 3, 1986Inventor: Miguel A. Perez Galan
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Patent number: 4576243Abstract: Bulk materials are supplied on to a conveyor one after another with the supply port filled with the material. Since the pressure applied to the conveyor surface by the material is constant, what is called the fall error is eliminated. In one embodiment the conveyor is moved while in another embodiment the material is carried by scrapers secured to a chain conveyor.Type: GrantFiled: April 27, 1984Date of Patent: March 18, 1986Assignee: Automatic Mechanical System Engineering Co.Inventor: Masato Matsumoto
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Patent number: 4557341Abstract: Weighing device for belt conveyors with individually adjustable reels for universal adaptation to different conveyors.The device is characterized in that the weighing device reels are located in enclosing frames (8,9 and 10,11,12), that the frames of the lateral reels at the inner ends are attached (15) to the frame of the central reel, so that they are adjustable to different troughing angles of the conveyor belts. The angle of rotation is adjusted in that the frames of the lateral reels are extended (17) inward to the center of the weighing device, and at the ends an adjusting screw device (18) is located. The load measuring device consists of parallel springs for carrying and guiding the weighing reel stand, and the load measured is taken up by a load measuring transducer of electromechanical type.Type: GrantFiled: May 15, 1984Date of Patent: December 10, 1985Assignee: S.E.G. Resistor ABInventor: Arne Soderholm
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Patent number: 4463816Abstract: A bulk material weighing apparatus 10, according to the present invention, includes a weigh frame 12 that is suspended within a conveyor frame 20 by three load cells 14, 16, and 18. The weigh frame has idler rollers 50, 52, 54, and 56 that are so positioned to be level with respect to corresponding rollers 34 and 36 of the conveyor frame. A conveyor belt 22, for transporting the bulk material 24 to be weighed, is supported by the rollers of both the conveyor and the weigh frames. The weight of the material conveyed by the conveyor belt is transferred to the load cells by the weigh frame. Material weight is found by summing the force outputs of the three load cells. The load cells are preferably positioned such that each load cell reacts one third of the weight of the material when uniformly distributed upon the conveyor belt.Type: GrantFiled: March 18, 1983Date of Patent: August 7, 1984Assignee: AutoWeigh Co.Inventor: John L. MacFarlane
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Patent number: 4339028Abstract: This invention relates to a method and apparatus for the automatic checkweighing of containers during the process of their manufacture, and particularly relates to the checkweighing of hot glass bottles during their transmit from a molding machine to a lehr where they are annealed.Type: GrantFiled: July 27, 1977Date of Patent: July 13, 1982Assignee: Powers Manufacturing Co.Inventor: Thomas Meacle
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Patent number: 4300201Abstract: Bulk weight of a stream of tobacco leaves which are transported toward a destalking machine is ascertained by equalizing the stream and determining the density of the equalized stream. Signals which denote the density of the stream are used to regulate the rate of admission of compressed classifying air into the destalking machine wherein compressed air separates tobacco leaf laminae from tobacco ribs.Type: GrantFiled: September 17, 1979Date of Patent: November 10, 1981Assignee: Hauni-Werke Korber & Co. KGInventor: Waldemar Wochnowski
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Patent number: 4225001Abstract: A bagging machine comprising a bagging scale, a conveyor belt for bulk filling, and a conveyor belt for dribble filling operation, both belts being coupled with a continuous weighing means operating or reversing the drive of the conveyor belts, so that after bulk filling the respective conveyor belt is reversed to discharge into another outlet while the respectively other conveyor belt is operated for dribble filling until the precise filling weight is attained.Type: GrantFiled: May 10, 1978Date of Patent: September 30, 1980Inventor: Gerd Gillenkirch
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Patent number: 4190932Abstract: An arrangement for opening textile fiber bales in which a row of textile fiber bales are broken up by at least two needle tables or rollers placed small distances apart in a row from their bottom side. The distance between the needle points of successive needle tables or rollers are continuously variable. Furthermore, the distance between needle points is changed automatically depending on properties inherent to the textile fiber bales or fiber tufts during operation of the needle table. The actual characteristic value of the detached fiber is compared with a nominal characteristic value, and a different signal is generated and applied as a control on a correcting element. The correcting element varies the distance between the needle points. Disturbance effects are obtained from the textile fiber bale, and this disturbance produces through a control device, an input or set variables for the distance between the needle points. One disturbance effect of the textile fiber bale may be the hardness.Type: GrantFiled: June 16, 1978Date of Patent: March 4, 1980Assignee: Trutzchler GmbH & Co. KG.Inventor: Hans Trutzschler
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Patent number: 3994404Abstract: A mixing plant which is portable and adapted to mix material, such as for on-the-site mixing of concrete and the like, and which mounts on a truck to be readily transported from site to site. This mixing plant includes four transportable units mounted on a truck and each comprising a belt conveyor, a weighing system operatively carrying the conveyor and adapted to weigh material on the top run of the latter, a hopper mounted above the belt conveyor and including a coarse dispensing outlet and a fine dispensing outlet with the latter positioned a predetermined distance from the coarse dispensing outlet and downstream of the latter relative to the displacement of the top run of the conveyor, a levelling bar of adjustable height extending lengthwise transversely of the conveyor between the two dispensing outlets, and with trap doors and actuators to adjust the opening and closing of the outlets.Type: GrantFiled: July 16, 1975Date of Patent: November 30, 1976Inventor: Jean-Francis Kisovec
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Patent number: 3993148Abstract: A method of and device for feeding into the charging funnel of a worm machine strip-shaped or irregularly formed partial pieces of material, especially rubber, dosed by weight as components of a mixture, according to which the pieces are weighed individually and are conveyed to the worm machine in a cycle sequence time compensating for the difference of the rated value or preselected weight and the actual value of the weight of the individual piece. The device for practicing the method according to the invention has an electric scale preferably connected to an analog converter, which scale feeds a starting voltage proportional to the actual weight of the partial pieces to a rated value -- actual value comparator and to an electric calculator which latter determines the change in the cycle sequence time in conformity with the deviation from the preselected weight of the respective partial piece.Type: GrantFiled: November 27, 1974Date of Patent: November 23, 1976Assignee: Werner & PfleidererInventors: Fridolin Keser, Wilhelm Seufert, Ralf Urban