Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Reexamination Certificate
2007-04-10
2008-10-28
Nguyen, Ha (Department: 2829)
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With rotor
C324S758010, C033S286000, C033S533000
Reexamination Certificate
active
07443157
ABSTRACT:
A device for testing planeness of an electrically conductive workpiece includes a platform for supporting the workpiece, a testing box movably fixed above the platform, an indicator, and a power supply. The testing box has a contact pin fixed on a bottom surface of the testing box. The contact pin is electrically wired in series with one electrode of the power supply. The platform is electrically wired in series with the other electrode of the power supply. The indicator is electrically wired in series with a testing circuit, which is made up of the power supply, the platform, and the contact pin. The contact pin is capable of movement above the platform at a distance which is equal to the sum of a thickness of the workpiece and a desired tolerance of the planeness, wherein if the planeness of the workpiece between the contact pin and the platform is out of tolerance, the testing circuit is closed, conducting power to the indicator, which will then indicate that the workpiece is ineligible.
REFERENCES:
patent: 5687487 (1997-11-01), Johnson
patent: 6043668 (2000-03-01), Carney
patent: 6354013 (2002-03-01), Mucke et al.
patent: 2004/0113640 (2004-06-01), Cooper et al.
patent: 2005/0024040 (2005-02-01), Martin et al.
Gong Lian-Zhong
Zhang Bing-Jun
Hon Hai Precision Industry Co. Ltd.
Hong Fu Jin Precision Industry ( ShenZhen) Co., Ltd.
Kusumakar Karen M
Nguyen Ha
Niranjan Frank R.
LandOfFree
Device and method for planeness testing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device and method for planeness testing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device and method for planeness testing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4018876