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:
Mar. 21, 2006
Filed:
Mar. 12, 2003
Applicants:
Alan P. Krema, Naperville, IL (US);
Virginia S. Griser, Legal Representative, Naperville, IL (US);
Inventors:
Alan P. Krema, Naperville, IL (US);
Virginia S. Griser, legal representative, Naperville, IL (US);
Assignee:
Progeny, Inc., Buffalo Grove, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H05G 1/32 (2006.01); H05G 1/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
A current feedback circuit in a dental imaging apparatus, which measures the x-ray tube current produced by the x-ray filament. During preheat, when the tube current is sensed to be appropriate for production of a constant rate of electrons, preheat is stopped, and diagnostic radiation emission begins. This circuit eliminates a fixed amount of preheat pulses which contribute unusable radiation during preheat of the filament in prior art systems.