Robert J Klein

US Patent:

52677630, Dec 7, 1993

Filed:

Dec 7, 1992

Appl. No.:

7/986459

Inventors:

Robert J. Klein - Sierra Madre CA

International Classification:

B60R 1942

US Classification:

293128

Abstract:

A protective guard for demountable attachment to the side of a vehicle comprising a single panel unit fabricated of a light weight material, such as cellular polystyrene, formed generally in the shape of an elongated triangle having one internal wall section and two approximately equal converging sidewalls. The interior wall is generally flat along the longitudinal edge portions and includes a channel formed down the center from one end of the panel to the other. The end portions of the panel are slightly tapered from a pre-determined point near each end of the panel where the two side walls converge. Imbedded in the interior wall of the panel are a plurality of encapsulated magnets that are used to attach and secure the panel to the vehicle's surface. Each capsule, which is generally conical in shape, includes an annular flange disposed about the wider, open end of the capsule. The opposite, narrower end of the capsule is permanently sealed and supports therein a generally thin disc shaped magnet.

US Patent:

46977686, Oct 6, 1987

Filed:

Nov 12, 1985

Appl. No.:

6/797089

Inventors:

Robert W. Klein - Rancho Palos Verdes CA

Assignee:

Grumman Aerospace Corporation - Bethpage NY

International Classification:

B64C 1316

US Classification:

244191

Abstract:

Strake, flap and canard control surfaces of an aircraft are driven by an error signal which is comprised of a pilot stick command signal and feedback components including measured vertical acceleration and pitch rate of the aircraft and a third feedback component derived from a complementary filter. The filter has a high-pass filter section which operates upon canard position data and a low-pass filter section which operates upon pitch rate. A summation of the signals passing both filtering sections is summed with the vertical acceleration and pitch rate feedback signals to form a combined feedback signal.

US Patent:

51031833, Apr 7, 1992

Filed:

Jan 26, 1990

Appl. No.:

7/471152

Inventors:

Robert S. Klein - Yorba Linda CA
Bradley L. Halleck - Mira Loma CA

Assignee:

Rockwell International Corporation - El Segundo CA

International Classification:

G01R 3126

US Classification:

324663

Abstract:

A method is provided for making cryogenic capacitance-voltage (C-V) measurements of semiconductor epitaxial layers without the need for measuring fully processed devices. The method utilizes impurity hopping conduction to obtain a compensator concentration profile. In a preferred embodiment, a metal electrode is evaporated onto the bottom of the substrate of a semiconductor wafer having a heavily doped substrate, a heavily doped epitaxial layer, and an undoped epitaxial layer. A mask is used to form metal electrode capacitor dots on the top of the undoped layer. The cryogenic C-V measurement system comprises a Helitran dewar with a wafer holder and electrical connections, a temperature controller, measurement electronics, and a microcomputer. A programmable dc source is stepped and combined with an ac voltage supplied by a lock-in amplifier. A preamplifier converts the current from a capacitor electrode on the wafer to a voltage measured by a lock-in amplifier.