Patents Assigned to Yamato Scale Company, Ltd.
  • Patent number: 5889235
    Abstract: A combination weighing machine includes a plurality of cups (20) into which articles (21) are put, a weigher (62) for measuring the sum weights of cup (20) and the articles (21) in the cups (20), or measuring the weights of the articles (21) while the articles (21) are held in the cups (20), a retention conveyor (63) for receiving from the weigher (62) and causing to wait the plurality of cups (20) containing articles (21) of which weights have been measured by the weigher (62), combination computing means for combining respective weight values developed by the measurement by the weigher (62) in various ways, and selecting articles (21) forming a combination of articles the sum weight of which is within a predetermined weight range, and a transfer conveyor (66) for conveying the cups (20) containing the articles (21) which form the combination selected by the combination computing means to a discharge position where the articles (21) forming the selected combination are discharged.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: March 30, 1999
    Assignee: Yamato Scale Company, Ltd.
    Inventors: Shozo Kawanishi, Hiroshi Higuchi, Yoshitaka Mikata, Kenichi Nakagawa, Seiji Yamano
  • Patent number: 4589506
    Abstract: The method of delivering quantities of product measured by weight with each quantity being of an acceptable weight relative to a reference weight, utilizing a set of weighing devices each adapted to weigh a fraction of said quantity and each adapted for unloading of product therefrom to contribute to a delivery.
    Type: Grant
    Filed: June 11, 1984
    Date of Patent: May 20, 1986
    Assignee: Yamato Scale Company, Ltd.
    Inventor: Takashi Hirano
  • Patent number: 4487338
    Abstract: An improved distribution feeder of circular disc type, for receiving articles at the central portion and exhausting them from a plurality of outlets at the periphery, having the upper surface provided with a slope highest at the center and slanting down toward the periphery and a vibrator for imparting vertical and rotational vibration to the distribution feeder, thereby facilitating free movement of the articles to eliminate undesirable accumulation of the articles at the closed outlets.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: December 11, 1984
    Assignee: Yamato Scale Company, Ltd.
    Inventors: Yasushi Oshima, Michinobu Omae
  • Patent number: 4470166
    Abstract: The method of delivering quantities of product measured by weight with each quantity being of an acceptable weight relative to a reference weight, utilizing a set of balances each adapted to weigh a fraction of said quantity and each adapted for unloading of product therefrom to contribute to a delivery, the method comprising for each delivery the steps of generating the values of combinations of weights on the balances excluding those balances which were unloaded on the preceding delivery and comparing the values with an acceptable weight standard to select a combination of balances to be unloaded to deliver said acceptable weight quantity, unloading the balances of the selected combination for said delivery, and loading the balances which were unloaded, wherein, for each delivery, the step of generating and comparing the values of the combinations of weights on the balances excluding those balances which were unloaded on the preceding delivery is initiated before completion of weighing out new loads on thos
    Type: Grant
    Filed: November 23, 1982
    Date of Patent: September 11, 1984
    Assignee: Yamato Scale Company, Ltd.
    Inventor: Takashi Hirano
  • Patent number: 4448083
    Abstract: A device for measuring components of force and moment along and about three orthogonal axes, composed generally of a central hub portion, an annular rim portion and four radial spoke portions connecting the hub and rim portions and having strain gages adhered thereon for producing electric signals indicative of strains appearing therein, and typically used in a tire tester, wind tunnel balance and the like by fixing either the hub or rim portion and applying a force to the other, the improvement of which is its relatively simple structure and exclusion of mutual interference of the respective components in measurement.
    Type: Grant
    Filed: April 5, 1982
    Date of Patent: May 15, 1984
    Assignee: Yamato Scale Company, Ltd.
    Inventor: Junichi Hayashi
  • Patent number: 4446938
    Abstract: A combination weighing machine, which is generally used for packing a plurality of articles in individual bags or the like so that the total weight of each bag becomes nearly equal to a predetermined target weight, including a plurality of weighing balances for weighing the articles at the same time, arithmetic means for selecting some of these balances so that the total weight of the articles thereon satisfies a predetermined condition and means for unloading the selected balances to collect the articles thereon and then loading them with new articles, respectively, to initiate the next cycle of operation; each balance being accompanied with one or more temporary holding hoppers and corresponding memories, and means for distributing the articles on the balance to these hoppers and, at the same time, feed weight information thereof to the corresponding memories, in order to subject the articles in the hoppers to the selection by the arithmetic means together with the articles on the balance, thereby improving
    Type: Grant
    Filed: June 10, 1982
    Date of Patent: May 8, 1984
    Assignee: Yamato Scale Company. Ltd.
    Inventor: Shozo Kawanishi
  • Patent number: 4444282
    Abstract: A combination weighing device with a simplified structure, which is used for packing a predetermined weight of articles in each package and especially useful with manual loading and unloading operations, arranged such that the articles are loaded successively on a single weighing unit and then unloaded on to a plurality of receptacles, the weights of the articles are successively stored in memory locations corresponding to the receptacles, the memory contents are successively read out in accordance with predetermined combinations by an arithmetic unit which selects a combination having a total weight which falls within a predetermined range, and the selected combination of the receptacles is indicated by an indicator for collecting the articles therein in a package.
    Type: Grant
    Filed: April 12, 1982
    Date of Patent: April 24, 1984
    Assignee: Yamato Scale Company, Ltd.
    Inventor: Shozo Kawanishi
  • Patent number: 4437561
    Abstract: An automatic continuous weighing machine of the belt conveyer type which can weigh a number of articles successively fed thereto, the improvement of which is that plural pairs of endless chains and corresponding weighing units are included, each of the weighing units being operatively coupled to each pair of chains, so that the articles to be weighed are successively put on the different pairs of chains and weighed by the corresponding weighing units without interference with the measurement of the adjoining articles, thereby enabling reduction of the feeding interval of the articles and a corresponding increase of weighing speed and efficiency.
    Type: Grant
    Filed: February 24, 1982
    Date of Patent: March 20, 1984
    Assignee: Yamato Scale Company, Ltd.
    Inventors: Eiichi Hasegawa, Shoji Yamano
  • Patent number: 4437527
    Abstract: A combination weighing machine, which is typically used for packing a plurality of articles in each bag or the like so that the total weight of each bag becomes nearly equal to a predetermined target weight, including a plurality of weighing balances for weighing the articles at the same time, arithmetic means for selecting some of these balances so that the total weight of the articles thereon meets with a predetermined condition and means for unloading the selected balances to collect the articles thereof and then loading them with new articles, respectively, to initiate the next cycle of operation; each balance being accompanied with at least two holding hoppers and corresponding memories, and means for distributing each batch of articles weighed by the corresponding balance to each hopper and supplying the weight of each batch to the corresponding memory, thereby subjecting all batches of articles in all holding hoppers to the combination selection of said arithmetic means with the contents of the corresp
    Type: Grant
    Filed: July 19, 1982
    Date of Patent: March 20, 1984
    Assignee: Yamato Scale Company, Ltd.
    Inventors: Michinobu Omae, Takashi Hirano
  • Patent number: 4398613
    Abstract: A device for grouping solid articles so as to have a predetermined total number by combination selection technique, in which a plurality of sub-groups of articles are prepared, the number of articles in each sub-group is detected, some of these sub-groups are successively extracted in accordance with a predetermined mathematical combination, the numbers of articles in the extracted sub-groups in each combination are summed to obtain the total number of said combination, the total numbers of the successive combinations are sequentially compared with a predetermined reference number and, when coincidence is obtained between both, the combination of sub-groups is selected to be packed together, so that each pack or bag contains the predetermined number of articles.
    Type: Grant
    Filed: June 22, 1981
    Date of Patent: August 16, 1983
    Assignee: Yamato Scale Company, Ltd.
    Inventor: Takashi Hirano
  • Patent number: 4397364
    Abstract: An automatically controlled combination weighing machine, which is generally used for packing a plurality of articles in each bag or the like so that each bag contains a predetermined weight of articles, comprising a plurality of weighing balances for weighing a plurality of articles each at the same time, arithmetic means for selecting some of these weighing balances so that the total weight of the articles on the selected balances fall within a predetermined range, and means for unloading and loading the weighing balances with articles automatically; an improvement of which is a provision of automatic drive control device for the loading means for controlling the feeding rate of the articles to the weighing balances so that an optimum number of articles are fed to each balance in order to obtain a maximum approximation of the total weight.
    Type: Grant
    Filed: June 26, 1981
    Date of Patent: August 9, 1983
    Assignee: Yamato Scale Company, Ltd.
    Inventor: Takashi Hirano
  • Patent number: 4388975
    Abstract: A combination weighing device which is typically used for packing a plurality of solid articles in each package, including a plurality of weighing balances for simultaneously weighing each of a plurality of articles, and arithmetic means for selecting some of these weighing balances so that the total weight of the articles thereon falls within a predetermined range, the device also including means for causing a specified one or more of the weighing balances to enter always into the selected combination, thereby ensuring that each package contains the articles from the specified weighing balance.
    Type: Grant
    Filed: May 12, 1981
    Date of Patent: June 21, 1983
    Assignee: Yamato Scale Company, Ltd.
    Inventor: Takashi Hirano
  • Patent number: 4385671
    Abstract: A combination weighing system, which is typically used for packing a plurality of articles in each bag or the like, including a plurality of weighing balances for weighing a plurality of articles at the same time, arithmetic means for selecting some of these weighing balances so that the total weight of the articles on the selected balances falls within a predetermined range, and means for unloading the selected weighing balances to collect the articles thereon and then loading them with new articles, respectively, to initiate the next cycle of operation; and means for enabling initiation of the next cycle of operation before completion of the preceding cycle to allow selection from the unselected balances for the purpose of economy of time.
    Type: Grant
    Filed: June 1, 1981
    Date of Patent: May 31, 1983
    Assignee: Yamato Scale Company, Ltd.
    Inventor: Takashi Hirano
  • Patent number: 4360070
    Abstract: A combination weighing device, which is typically used for packing a plurality of solid articles in each bag or the like, including a plurality of weighing balances for weighing a plurality of articles each at the same time, and arithmetic means for selecting some of these weighing balances so that the total weight of the articles thereon falls within a predetermined allowable range, the device also including means for checking the number of these selected articles to make them fall within a predetermined allowable range, and collecting these articles in a pack or bag so that each pack is substantially constant in weight and contains a substantially constant number of articles.
    Type: Grant
    Filed: December 17, 1980
    Date of Patent: November 23, 1982
    Assignee: Yamato Scale Company, Ltd.
    Inventor: Takashi Hirano
  • Patent number: 4341274
    Abstract: A combination weighing device, used for grouping a mass of articles having substantial variance in their weights into groups each having a substantially constant total weight, by weighing some of these articles by a plurality of weighing balances having automatic article loading and unloading means, summing up the measured weights successively in accordance with a predetermined set of combinations of the balances and, when the sum falls in a predetermined range of weight, supplying control signals to the unloading means of the corresponding balances to collect the articles from them and when no control signal is supplied to the unloading means due to lack of desired combined weight, the loading means of the weighing balance carrying the least weight is automatically actuated to add some articles to the balance to make it possible to obtain the desired combined weight.
    Type: Grant
    Filed: April 6, 1981
    Date of Patent: July 27, 1982
    Assignee: Yamato Scale Company, Ltd.
    Inventors: Takashi Hirano, Takashi Aga
  • Patent number: 4336853
    Abstract: A combination weighing device, which is typically used for packing a plurality of solid articles in each bag or the like, including a plurality of weighing balances for weighing a plurality of articles each at the same time, and arithmetic means for selecting some of these wieghing balances so that the total weight of the articles thereon falls within a predetermined allowable range, the device also including means for checking the number of these selected articles to make them fall within a predetermined allowable range and collecting these articles in a pack or bag so that each pack contains substantially constant weight and number of articles.
    Type: Grant
    Filed: December 22, 1980
    Date of Patent: June 29, 1982
    Assignee: Yamato Scale Company, Ltd.
    Inventor: Takashi Hirano
  • Patent number: 4336852
    Abstract: A combination weighing device having a plurality of weighing balances, an arithmetic unit for receiving outputs from said weighing balances and computing sums of selected groups of signals from the weighing balances, comparing the sums with a predetermined weight range and producing a signal when a sum is within the range and control switch means connected with said weighing balances to inhibit transmission of signals from selected balances to the arithmetic unit.
    Type: Grant
    Filed: December 12, 1980
    Date of Patent: June 29, 1982
    Assignee: Yamato Scale Company, Ltd.
    Inventor: Takashi Hirano
  • Patent number: 4146873
    Abstract: An analog to digital convertor for converting mechanical motion to an electric digital signal which includes a code plate carrying gray codes for measuring displacement, and codes for parity bits and parity check control bits wherein the parity bits detect the occurrence of a readout error while the parity check control bits detect an incorrect parity check caused by errors in the sensing operation such as dirt, dust, or damaged sensing elements.
    Type: Grant
    Filed: March 17, 1977
    Date of Patent: March 27, 1979
    Assignee: Yamato Scale Company, Ltd.
    Inventors: Masami Yamanaka, Hiroshi Higuchi
  • Patent number: 4139092
    Abstract: A conveyer system having a pair of spaced roller chains driven by chain wheels and having carriages disposed between the chains and pivotally coupled thereto by means of shafts. The carriages while normally maintaining horizontal positions, each include a pair of horizontally disposed rollers and a pair of vertically disposed rollers for cooperation with fixed guides for maintaining the carriages horizontal whether travelling through horizontal, vertical or inclined paths. The system also includes guide means coupled to the carriage shafts for engaging wheels having recesses therein to hold the carriages horizontal while the chains travel about the supporting chain wheels.
    Type: Grant
    Filed: January 4, 1977
    Date of Patent: February 13, 1979
    Assignee: Yamato Scale Company, Ltd.
    Inventor: Shoji Yamano
  • Patent number: 4122770
    Abstract: A series printer for printing selected indicia or type on a strip of paper wherein the indicia are carried by a rotating drum which rotates in synchronism with a pulse generator identifying specific indicia as they pass through a printing position, a ratchet and pawl operated in synchronism with said drum for intermittantly moving a paper strip through the printing position and in spaced relationship to the drum, pulses produced by an indicia or type signal generator are compared with the identifying pulses and actuates a printing hammer at the printing position when the two sets of pulses are identical to print a specific indicia on the paper, actuation of the printing hammer being prevented during movement of the paper.
    Type: Grant
    Filed: April 19, 1977
    Date of Patent: October 31, 1978
    Assignee: Yamato Scale Company, Ltd.
    Inventors: Shoji Umeda, Akio Yoshikawa