US4360070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination weighing device selecting desired weight and number of articles
Assignee: Yamato Scale Co Ltd
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Filing: 1980-12-17
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Granted: 1982-11-23
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Expires: 2000-12-17
Abstract
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.
Inventors
- 👤 Takashi Hirano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:54
CPC Classifications
G; G01; G01G; G01G19/00; G01G19/22; G01G19/34; G01G19/343; G01G19/346; G01G19/387; G01G19/393; G01G19/40; G01G19/42
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
267 words
A combination weighing device, comprising a plurality of weighing balances for weighing a plurality of articles to produce electric signals indicative of the respective measured weights, a first adder circuit for summing up the incoming signals to produce a first sum signal, first normally-open switches having a control input each for coupling therethrough the weight signals from said weighing balances respectively to said adder circuit, means for comparing said first sum signal with a predetermined allowance of weight to produce a first command signal when the sum satisfies said allowance, switch control means for providing a predetermined set of combinations of control signals applied to the control inputs of said first switches respectively to close them in accordance with said combinations in turn, and means responsive to said first command signal for storing a current combination of said control signals for utilization, a plurality of detection units associated with said weighing balances respectively for detecting the number of articles on said balances to produce electric signals indicative of the respective detected numbers, a second adder circuit for summing up the incoming signals to produce a second sum signal, second normally-open switches having control inputs coupled respectively to the corresponding outputs of said switch control means for coupling therethrough the number signals from said detection units respectively to said second adder circuit, means for comparing said second sum signal with a predetermined allowable number to produce a second command signal when the sum satisfies said allowance, and means for causing said storing means to be responsive only to presence of both of said first and second command signals.
Claim 2
Dependent Claim
267 words
A combination weighing device, comprising a plurality of weighing balances for weighing a plurality of articles to produce electric signals indicative of the respective measured weights, a first adder circuit for summing up the incoming signals to produce a first sum signal, first normally-open switches having a control input each for coupling therethrough the weight signals from said weighing balances respectively to said adder circuit, means for comparing said first sum signal with a predetermined allowance of weight to produce a first command signal when the sum satisfies said allowance, switch control means for providing a predetermined set of combinations of control signals applied to the control inputs of said first switches respectively to close them in accordance with said combinations in turn, and means responsive to said first command signal for storing a current combination of said control signals for utilization, a plurality of detection units associated with said weighing balances respectively for detecting the number of articles on said balances to produce electric signals indicative of the respective detected numbers, a second adder circuit for summing up the incoming signals to produce a second sum signal, second normally-open switches having control inputs coupled respectively to the corresponding outputs of said switch control means for coupling therethrough the number signals from said detection units respectively to said second adder circuit, means for comparing said second sum signal with a predetermined allowable number to produce a second command signal when the sum satisfies said allowance, and means for causing said storing means to be responsive only to presence of both of said first and second command signals.
Claim 3
Dependent Claim
71 words
A combination weighing device, according to claim 1, characterized in that said number control unit includes a common register for storing a predetermined unit weight of said articles, and a divider circuit coupled to said register and corresponding one of said weighing balances for dividing the corresponding weight signal by said unit weight and then rounding the result into an integer to produce an output indicative of the number of articles.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-22 | 1986-05-24 | 1986-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-22 | 1990-05-24 | 1990-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-22 | 1994-05-24 | 1994-11-23 | $7700.00 | Window Closed / Lapsed |