ES375163A1 - Rebound type checkweigher - Google Patents

Rebound type checkweigher

Info

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
Application number
ES375163A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GLENN HUSOME
Original Assignee
GLENN HUSOME
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GLENN HUSOME filed Critical GLENN HUSOME
Publication of ES375163A1 publication Critical patent/ES375163A1/en
Expired legal-status Critical Current

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.
ES375163A 1969-01-15 1970-01-03 Rebound type checkweigher Expired ES375163A1 (en)

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)

* Cited by examiner, † Cited by third party
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

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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