1
John E B Tuttle: Buried pipe locator utilizing a change in ground capacitance. The United States of America represented by the Secretary of the Army, Freda L Krosnick, Paul S Clohan, April 1, 1997: US05617031 (18 worldwide citation)

A buried pipe detection device based upon the principle of sensing of difences in the dielectric/conductive properties of the ground in the vicinity of the pipe is disclosed. Because the electrical properties of the ground directly over the buried pipe will differ from those of an area immediately a ...


2
John E B Tuttle: Cable shield fault locator. The United States of America represented by the Secretary of the Army, Paul S Clohan Jr, William Randolph, August 28, 2001: US06281685 (16 worldwide citation)

A system and method for locating flaws in cable shields and electromagnetic tubing (shield conduit) without disconnection of the cable or conduit under test is described. The fault location method, using a unique sensor array and fault detection circuit, supplements capabilities of earlier inductanc ...


3
John E B Tuttle: Inductive cable resistance tester. United States of America represented by the Secretary of The Army, Saul Elbaum, Frank J Dynda, February 23, 1993: US05189375 (14 worldwide citation)

A technique and apparatus for measurement of resistances of 0.01 ohm and s without disconnection from the circuit. The invention is used for measurement of degradation in cable shields by measuring the droop caused by circuit resistance in an induced current pulse in the undisconnected circuit. The ...


4
John E B Tuttle: Dual purpose probe for simultaneous voltage and current sampling. The United States of America represented by the Secretary of the Army, Saul Elbaum, Guy M Miller, August 28, 1990: US04952869 (13 worldwide citation)

A dual purpose probe for the simultaneous sampling of the voltage and curt at a test point. The device includes a capacitive probe for measuring voltage, and a small solenoid type inductor for measuring current when affixed so that it is at right angles to the wire being sampled. A small, double-sid ...


5
John E B Tuttle: Test set for transient protection devices. The United States of America represented by the Secretary of the Army, Anthony T Lane, Robert P Gibson, Saul Elbaum, November 20, 1984: US04484136 (9 worldwide citation)

A method and device for testing transient protection circuits comprising itive and negative high voltage protection circuits and high voltage fast rise time protection circuits. A bipolar test signal with alternate positive and negative high voltage pulses is applied to the circuit under test. Deter ...


6
John E B Tuttle: Cable shield resistance test set. The United States of America represented by the Secretary of the Army, Freda L Krosnick, Frank J Dynda, February 21, 1995: US05391991 (8 worldwide citation)

A technique and apparatus for measurement of resistances of 0.025 ohm and ss without disconnection from the circuit. The invention is used for measurement of degradation in cable shields. The method can also be used for measurement of junction resistances in high current circuits such as auto starte ...


7
John E B Tuttle: In-line coaxial surge protector and test fixture. The United States of America represented by the Secretary of the Army, Saul Elbaum, Paul S Clohan, Guy M Miller, June 4, 1991: US05021734 (3 worldwide citation)

A Surge Protection Device Test Fixture having a metallic housing with a bs coverplate, the housing having an input coaxial connector and an output coaxial connector mounted on either end, a bare wire conductor connecting the center conductor of the input coaxial connector to the center conductor of ...


8
John E B Tuttle, Neal Tesny, Thomas J Bock: Armed-state detector for antitank mines. The United States of America represented by the Secretary of the Army, Freda L Krosnick, Paul S Clohan Jr, September 9, 1997: US05665934 (1 worldwide citation)

An armed-state detector for the testing of "live" antitank mines is discld. The invention allows a user to determine, from a safe distance, if a mine is in an "active" state. A pole mounted sensor array is placed over the mine to sample the weak repetitive magnetic field that emanates from "active" ...


9
John E B Tuttle: Fiber optic link for detecting mechanical vibration in the presence of an electromagnetic field. The United States of America represented by the Secretary of the Army, Saul Elbaum, Guy M Miller, May 7, 1991: USH0000911

An apparatus for detecting mechanical vibration in the presence of an electromagnetic pulse, which is of particular use in the testing of land mines. An optical fiber link is provided between the device under test and a remote data collection station. A vibration sensor and optical transmitter are s ...



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