Juan Carlos Grube

US Patent:

20050052186, Mar 10, 2005

Filed:

Sep 4, 2003

Appl. No.:

10/655439

Inventors:

Juan Grube - Raymore MO, US

International Classification:

G01R031/00

US Classification:

324503000

Abstract:

A circuit testing device adapted and operable to allow a single technician to properly and practically test an electrical subsystem of a vehicle. More specifically, the device is adapted to substantially automatically perform the particular recommended or required tests for investigating or diagnosing the electrical subsystem, and to straightforwardly communicate the results of those tests as being either satisfactory or unsatisfactory without requiring complex interpretation by the technician. The device broadly comprises a housing, including a display and control panel; one or more connectors; and testing circuitry. The display and control panel uses green LEDs to indicate satisfactory or good results and red LEDs to indicate unsatisfactory or bad results. The testing circuitry also provides for any recommended or required testing procedures such as, for example, delay periods to allow circuits to stabilize, and voltage checks to ensure sufficient voltage for performing the test and achieving an accurate result.

US Patent:

39477576, Mar 30, 1976

Filed:

Feb 24, 1975

Appl. No.:

5/552441

Inventors:

Donald B. Grube - Raymore MO
Juan C. Grube - Raymore MO
James A. Grube - Raymore MO

International Classification:

G01R 3102

US Classification:

324 28R

Abstract:

A test circuit for automotive voltage regulators includes means for simulating transient battery voltages, a meter for monitoring these voltages as related to the operation of the regulator being tested, switching means to protect the meter and also to facilitate the reading thereof, a test load simulating the field coil of an automotive alternator, and an indicator light for determining when the test load is energized. The volt meter indicator moves to show increasing voltage and returns to zero when the regulator interrupts the current to the test load.