EP0246937A3
Nuclear radiation apparatus and method for dynamically measuring density of test materials during compaction
Abstract
The present invention provides an apparatus and method for dynamically measuring the density of soil, asphaltic material and the like during the compaction of the material. The gauge (20) includes a nuclear radiation source (31) and a nuclear radiation detector means (32) which are mounted in spaced relation from the surface of the test material to form an air gap therebetween. The gauge also includes means for measuring the size of the air gap between the test material and the source and detector system, and means to compensate for the effect of the size of the air gap to thereby obtain the density of the test material.
Term
Term ended
Projected expiry passed 15 April 2007, 19.4 years ago.
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1 sheet
Sheet 1
Every citation, both waysCites: the store holds 2 of 3
| Document | Relation | Office | Category | Cited during |
|---|---|---|---|---|
| EP0108845A1 | Cites | European Patent Office (EPO) | AD | Search report |
| US3341706A | Cites | United States of America | Y | Search report |
| INTERNATIONAL CONSTRUCTION, vol. 22, no. 3, March 1983, page 140, Havwards Heath, Sussex, GB; "New products" | Non-patent | – | – | Search report |
| CIVIL ENGINEERING, Mai 1983, pages 40-43, London, GB; "Product profile" | Non-patent | – | – | Search report |
| INTERNATIONAL CONSTRUCTION, vol. 22, no. 8, August 1983, pages 59,61, Havwards Heath, Sussex, GB; L. FORSSBLAD: "New trends in compaction" | Non-patent | – | – | Search report |
| CIVIL ENGINEERING, January 1984, pages 42-44, London, GB; J.D. LATHAM: "Aids towards better compaction" | Non-patent | – | – | Search report |
16 members in 11 offices
Priority claims4
| Document | Office | Kind | Date |
|---|---|---|---|
| 865776 | United States of America | – | |
| 86577686 | United States of America | A | |
| 865776 | – | – | – |
| US19860865776 | – | – | – |
Members16
| Document | Office | Kind | |
|---|---|---|---|
| ZA871069B | South Africa | B | |
| EP0246937A2 | European Patent Office (EPO) | A2 | |
| AU7268787A | Australia | A | |
| JPS62291553A | Japan | A | |
| BR8702615A | Brazil | A | |
| EP0246937A3This record | European Patent Office (EPO) | A3 | |
| AU603097B2 | Australia | B2 | |
| CA1277445C | Canada | C | |
| US4979197A | United States of America | A | |
| EP0246937B1 | European Patent Office (EPO) | B1 | |
| AT77485T | Austria | T | |
| ATE77485T1 | Austria | T1 | |
| DE3779815D1 | Germany | D1 | |
| DE3779815T2 | Germany | T2 | |
| ES2033332T3 | Spain | T3 | |
| GR3005069T3 | Greece | T3 |
52 legal events, as 5 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | Office | |
|---|---|---|---|
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Announcement of lapse in spainLapsedFD2A | FD2A | ES | |
| Notification of lapseLapsedST | ST | FR | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Gb: european patent ceased through non-payment of renewal feeCeasedGBPC | GBPC | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Se: european patent has lapsedLapsedEUG | EUG | EP | |
| Nl: lapsed or anulled due to non-payment of the annual feeLapsedNLV4 | NLV4 | EP | |
| Patent ceasedCeasedPL | PL | CH | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Be: lapsedLapsedBERE | BERE | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annulment or lapse due to non-payment of feesLapsed3005069MM2A | MM2A | GR | |
| Se: european patent in force in swedenEAL | EAL | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Lu: last paid annual feeEPTA | EPTA | EP | |
| No opposition filedOpposition26N | 26N | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE | PLBE | EP | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA | STAA | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Definitive protectionFG2A | FG2A | ES | |
| Validation in greece3005069FG4A | FG4A | GR | |
| It: translation for a ep patent filedITF | ITF | EP | |
| It: translation for a ep patent filedITF | ITF | EP | |
| Fr: translation filedET | ET | EP | |
| Corresponds to:REF | REF | EP | |
| Designated contracting statesAK | AK | EP | |
| Corresponds to:REF | REF | EP | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | EP | |
| First examination report despatched17Q | 17Q | EP | |
| Request for examination filed17P | 17P | EP | |
| Designated contracting statesAK | AK | EP | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | EP | |
| Designated contracting statesAK | AK | EP | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI | EP |
Numbers
- Publication
- 0246937
- Publication, DOCDB
- 0246937
- Publication, EPODOC
- EP0246937
- Application
- 87400864
- Application, DOCDB
- 87400864
- Application, EPODOC
- EP19870400864
Titles3
- German
- Kernstrahlungsapparat und Verfahren zur dynamischen Messung der Dichte von Prüfstoffen während der Verdichtung
- English
- Nuclear radiation apparatus and method for dynamically measuring density of test materials during compaction
- French
- Appareil à radiation nucléaire et procédé de mesure dynamique de la densité de matériaux d'essais pendant la compaction
Classification
- CPC, 2
- G01N23/203
- E01C19/288
- IPC, 4
- G01N23 201
- E01C19 28
- G01B17 00
- G01N23 203
Designated states1
- Contracting states, 1
- Sweden