ES375163A1 - Rebound type checkweigher - Google Patents
Rebound type checkweigherInfo
- Publication number
- ES375163A1 ES375163A1 ES375163A ES375163A ES375163A1 ES 375163 A1 ES375163 A1 ES 375163A1 ES 375163 A ES375163 A ES 375163A ES 375163 A ES375163 A ES 375163A ES 375163 A1 ES375163 A1 ES 375163A1
- Authority
- ES
- Spain
- Prior art keywords
- scr
- pulse
- over
- conduct
- duration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G9/00—Methods of, or apparatus for, the determination of weight, not provided for in groups G01G1/00 - G01G7/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/16—Sorting according to weight
- B07C5/18—Sorting according to weight using a single stationary weighing mechanism
- B07C5/20—Sorting according to weight using a single stationary weighing mechanism for separating articles of less than a predetermined weight from those of more than that weight
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25G—HANDLES FOR HAND IMPLEMENTS
- B25G1/00—Handle constructions
- B25G1/10—Handle constructions characterised by material or shape
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sorting Of Articles (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Electron Sources, Ion Sources (AREA)
Abstract
In a circuit for operating a solenoid S for a predetermined time, if the duration of an input pulse lies outside certain pre-set limits, a positive-going leading edge is initiated by wire 30 leaving pin 40, which causes transistor Q1 to conduct, thereby cutting off Q2, Q3 and Q5. Capacitor C1 charges through R1 and C2 through R2 but at a slower rate, while Q3 removes the short across thyristor SCR-1. If the pulse terminated by 30, 40 reconnecting is of the correct duration, Cl will have charged sufficiently long for the potential of the emitter of unijunction Q4 to have risen enough for it to conduct, and feed a firing pulse, to SCR-1, the fall in anode potential allowing substantially complete discharge of C1 over diode D1 As a result, when Q2 conducts again, the pulse developed by C1 discharging through R3 is insufficient to fire SCR-2, while the conduction of Q3 quenches SCR-1 at its anode. If the pulse terminates before the pre-set limit, Cl will not have been substantially discharged from Q2 conducting, the pulse developed across R3 is effective when fed over D2 to fire SCR-2, causing S to operate. If the pulse length exceeds the preset limit, C2 will have charged sufficiently for Q6 to conduct and feed a pulse over D3 to fire SCR-2. Limitation of duration of operation of S. In the normal state SCR-3 conducts, the low anode potential maintaining mean Ne extinguished. When SCR-2 fires, the fall in anode potential, applied over C4, quenches SCR-3. C4 now charges over R8 until Ne ionizes, whereupon SCR-3 fires and extinguishes SCR-2 so that S releases.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US79142169A | 1969-01-15 | 1969-01-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES375163A1 true ES375163A1 (en) | 1972-05-16 |
Family
ID=25153666
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES375163A Expired ES375163A1 (en) | 1969-01-15 | 1970-01-03 | Rebound type checkweigher |
Country Status (7)
Country | Link |
---|---|
US (1) | US3545611A (en) |
BE (1) | BE744490A (en) |
CA (1) | CA921868A (en) |
ES (1) | ES375163A1 (en) |
FR (1) | FR2028406A1 (en) |
GB (1) | GB1273067A (en) |
NL (1) | NL7000342A (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL146934B (en) * | 1970-10-16 | 1975-08-15 | Knol Willem | METHOD AND INSTALLATION FOR PERFORMING THE METHOD FOR MEASURING FOR THE QUANTITY OF LANDFILL GOODS. |
US4139069A (en) * | 1977-06-23 | 1979-02-13 | Acurex Corporation | Digital weighing method |
US4916391A (en) * | 1984-11-15 | 1990-04-10 | Doerman Eryk S | LVDT displacement sensor with signal noise reduction for use in weighing apparatus |
GB8428976D0 (en) * | 1984-11-16 | 1984-12-27 | Gersan Anstalt | Weighing number of objects in succession |
GB2178547A (en) * | 1984-11-16 | 1987-02-11 | Gersan Anstalt | Weighing a number of objects in succession |
US4768600A (en) * | 1986-07-16 | 1988-09-06 | Colvin David P | High speed weighing system |
GB2214646B (en) * | 1988-01-13 | 1991-10-02 | Post Office | Weighing apparatus |
US5304745A (en) * | 1992-12-03 | 1994-04-19 | Fairbanks Inc. | Modular checkweigher and grading system |
JP3433338B2 (en) * | 1996-02-22 | 2003-08-04 | 松下電器産業株式会社 | Separate type air conditioner |
WO2002042153A1 (en) * | 2000-11-22 | 2002-05-30 | Mitsubishi Heavy Industries, Ltd. | Vibration absorbing system of micro gravity rotating apparatus |
JP2011021947A (en) * | 2009-07-14 | 2011-02-03 | Toshiba Corp | Weight detection apparatus |
CN112934741B (en) * | 2021-01-27 | 2023-02-07 | 扬州虹扬科技发展有限公司 | Diode screening method and system |
-
1969
- 1969-01-15 US US791421*A patent/US3545611A/en not_active Expired - Lifetime
- 1969-12-18 CA CA070252A patent/CA921868A/en not_active Expired
- 1969-12-30 GB GB63171/69A patent/GB1273067A/en not_active Expired
-
1970
- 1970-01-03 ES ES375163A patent/ES375163A1/en not_active Expired
- 1970-01-12 NL NL7000342A patent/NL7000342A/xx unknown
- 1970-01-15 BE BE744490D patent/BE744490A/en unknown
- 1970-01-15 FR FR7001470A patent/FR2028406A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
US3545611A (en) | 1970-12-08 |
DE2000345B2 (en) | 1973-01-18 |
NL7000342A (en) | 1970-07-17 |
DE2000345A1 (en) | 1970-08-27 |
GB1273067A (en) | 1972-05-03 |
CA921868A (en) | 1973-02-27 |
FR2028406A1 (en) | 1970-10-09 |
BE744490A (en) | 1970-06-15 |
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