Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Reexamination Certificate
2006-02-14
2006-02-14
Nguyen, Vincent Q. (Department: 2858)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
C324S326000, C324S686000
Reexamination Certificate
active
06998854
ABSTRACT:
An underground buried object detecting apparatus has a capacitance sensor attached to a base plate to be faced to the ground, to detect an underground capacitance change, a stored value of a reference capacitance corresponding to the absence of a buried object, a comparing operation device for comparing detected capacitance with the stored capacitance value, and a buzzer for receiving a signal from the operation device and indicating presence of a buried object.
REFERENCES:
patent: 4992741 (1991-02-01), Douglas et al.
patent: 5617031 (1997-04-01), Tuttle
patent: 6097190 (2000-08-01), Foerster
patent: 6326790 (2001-12-01), Ott et al.
patent: 6486673 (2002-11-01), Goldfine et al.
patent: 7-2987 (1995-01-01), None
patent: 9-33194 (1997-02-01), None
patent: 2000-266843 (2000-09-01), None
patent: 2001-264448 (2001-09-01), None
Jordan and Hamburg LLP
Kramskaya Marina
Nguyen Vincent Q.
Unirec Co., Ltd.
Yamaguchi Junichi
LandOfFree
Buried structure detection device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Buried structure detection device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Buried structure detection device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3665188