The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 21, 2011
Filed:
Oct. 27, 2006
Dirk Hummel, Hennef, DE;
Dirk Hummel, Hennef, DE;
Orica Explosives Technology Pty Ltd, Melbourne Victoria, AU;
Abstract
In the method for assigning a delay time to an electronic delay detonator. The detonator includes a data register () into which a desired delay time value, supplied by a controller, is written. Subsequently, over a predetermined time period (t) the contents of the data register () is repetitively added to a counter register () in which the contents is accumulated. After a division of the counter register contents through the calibration time, the contents of the counter register () is subsequently counted down using the same oscillator () which has controlled the accumulation process. The invention allows the delay time value supplied by the controller to be exactly adhered with, using an oscillator () of low accuracy and without feedback from the detonator () to the controller.