Measuring and testing – Specimen stress or strain – or testing by stress or strain... – Specified electrical sensor or system
Reexamination Certificate
2007-11-27
2007-11-27
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
Specified electrical sensor or system
C073S104000, C073S105000, C073S118040
Reexamination Certificate
active
11233842
ABSTRACT:
The present invention presents a means for simultaneously testing the compressive strength and measuring the thermal energy dissipated by a given friction material during slip. The testing apparatus includes a rotatable flywheel that rotates a transmission reaction plate to simulate a typical reaction plate in a vehicle transmission assembly. A plurality of test samples selectively interact with the reaction plate while being elevated by hydraulically actuated cylinders. The thermal energy dissipated between the reaction plate and each test sample is measured for each test sample. A method for accomplishing the same for a bill-of-design reference is also included.
REFERENCES:
patent: 4993531 (1991-02-01), Villata
patent: 5003817 (1991-04-01), Pflaum et al.
patent: 5005985 (1991-04-01), Piorkowska-Galeska et al.
patent: 5685193 (1997-11-01), Hurtubise et al.
patent: 5689058 (1997-11-01), Yuan
patent: 5731975 (1998-03-01), Nakashima
patent: 5823912 (1998-10-01), Fischer et al.
patent: 6132082 (2000-10-01), Pause
patent: 6330820 (2001-12-01), Cotterill et al.
patent: 6601457 (2003-08-01), Li et al.
Reinhart Timothy J.
Stadtfeld Kerry W.
General Motors Corporation
Kirkland, III Freddie
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