GB2184681A - Pharmaceutical tablet press control mechanism - Google Patents

Pharmaceutical tablet press control mechanism

Info

Publication number
GB2184681A
GB2184681A GB08627526A GB8627526A GB2184681A GB 2184681 A GB2184681 A GB 2184681A GB 08627526 A GB08627526 A GB 08627526A GB 8627526 A GB8627526 A GB 8627526A GB 2184681 A GB2184681 A GB 2184681A
Authority
GB
United Kingdom
Prior art keywords
tablet press
tablet
microprocessor
ram
master cpu
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.)
Granted
Application number
GB08627526A
Other versions
GB2184681B (en
GB8627526D0 (en
Inventor
David Allan Lewis
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.)
Thomas Engineering LLC
Original Assignee
Thomas Engineering LLC
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24882379&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=GB2184681(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Thomas Engineering LLC filed Critical Thomas Engineering LLC
Publication of GB8627526D0 publication Critical patent/GB8627526D0/en
Publication of GB2184681A publication Critical patent/GB2184681A/en
Application granted granted Critical
Publication of GB2184681B publication Critical patent/GB2184681B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/005—Control arrangements

Abstract

Control and monitoring instrumentation for a high speed double rotary tablet press mechanism. Each tablet press side has strain gauges producing signals indicative of tablet compression. The strain gauge generates control signals received by a peak detector, which holds the maximum strain signal. The peak signals are converted to digital and provided to a microprocessor that first controls operation of the reject gate and regulates tablet consistency by controlling powder fill into the dies, and second, passes information to RAM. The RAM is shared by a master CPU, clocked 180<o> out of phase with the microprocessor. The master CPU produces either a CRT or printed output of both raw and statistically abstracted tablet press data.
GB8627526A 1985-03-29 1986-03-26 Pharmaceutical tablet press control mechanism Expired GB2184681B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US71752685A 1985-03-29 1985-03-29
PCT/US1986/000580 WO1986005743A1 (en) 1985-03-29 1986-03-26 Pharmaceutical tablet press control mechanism

Publications (3)

Publication Number Publication Date
GB8627526D0 GB8627526D0 (en) 1986-12-17
GB2184681A true GB2184681A (en) 1987-07-01
GB2184681B GB2184681B (en) 1989-09-06

Family

ID=24882379

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8627526A Expired GB2184681B (en) 1985-03-29 1986-03-26 Pharmaceutical tablet press control mechanism

Country Status (3)

Country Link
EP (1) EP0221091B1 (en)
GB (1) GB2184681B (en)
WO (1) WO1986005743A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4946634A (en) * 1987-04-16 1990-08-07 Gte Products Corporation Powder compacting press to control green density distribution in parts
DE3823417A1 (en) * 1988-07-11 1990-01-18 Fette Wilhelm Gmbh METHOD AND DEVICE FOR MONITORING THE PRESSING FORCE OF THE STAMP OF A TABLET PRESS
US5838571A (en) * 1996-01-29 1998-11-17 Alza Corporation Tablet press monitoring and controlling method and apparatus
US8361360B2 (en) 2006-05-15 2013-01-29 Courtoy Nv Method for controlling a tablet press

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3255716A (en) * 1962-12-10 1966-06-14 Upjohn Co Measurement of forces within a tableting machine
FR2161640A5 (en) * 1971-11-16 1973-07-06 Upjohn Co
US3791205A (en) * 1972-02-04 1974-02-12 D Hooker Potted strain gauge
US4099239A (en) * 1976-03-15 1978-07-04 Hoffmann-La Roche Inc. Force measurement and analysis particularly relating to rotary tablet presses
US4109309A (en) * 1977-02-09 1978-08-22 Kearney & Trecker Corporation Method and apparatus for remote display of analog signals occurring in computer controlled machine tools
FR2403792A1 (en) * 1977-09-22 1979-04-20 Fette Wilhelm Gmbh PROCESS FOR THE MANUFACTURING OF TABLETS AND PRESS FOR CONFECTIONING THE TABLETS
GB2021978A (en) * 1978-06-05 1979-12-12 Fette Wilhelm Gmbh Method and apparatus for grading tablets

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3255716A (en) * 1962-12-10 1966-06-14 Upjohn Co Measurement of forces within a tableting machine
FR2161640A5 (en) * 1971-11-16 1973-07-06 Upjohn Co
US3791205A (en) * 1972-02-04 1974-02-12 D Hooker Potted strain gauge
US4099239A (en) * 1976-03-15 1978-07-04 Hoffmann-La Roche Inc. Force measurement and analysis particularly relating to rotary tablet presses
US4109309A (en) * 1977-02-09 1978-08-22 Kearney & Trecker Corporation Method and apparatus for remote display of analog signals occurring in computer controlled machine tools
FR2403792A1 (en) * 1977-09-22 1979-04-20 Fette Wilhelm Gmbh PROCESS FOR THE MANUFACTURING OF TABLETS AND PRESS FOR CONFECTIONING THE TABLETS
GB2021978A (en) * 1978-06-05 1979-12-12 Fette Wilhelm Gmbh Method and apparatus for grading tablets

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MANUFACTURING CHEMIST & AEROSOL NEWS, VOLUME 50, APRIL 1979 PAGES 33,38,40, *

Also Published As

Publication number Publication date
EP0221091A1 (en) 1987-05-13
GB2184681B (en) 1989-09-06
EP0221091B1 (en) 1990-03-07
WO1986005743A1 (en) 1986-10-09
GB8627526D0 (en) 1986-12-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970326