Chrysler Corporation

Other

James C Carter

Richard Megregian

Eli Nichols

Michael G Moore

Harlan E Kifer

Andrew P Person

Andrew D Magic

Keizo Watanabe

Joseph F Impullitti

Robert C Margossian

Nancy J McFarlane

An instrument panel having a light source and a transparent cover in front of the light source. The transparent cover has a first surface at the front side of the cover and a second surface at the back side of the cover, and is formed of a polymeric wall and a polymeric film. The polymeric film has a reflection-reduction layer thereon and is bonded by intermolecular forces to the wall so that the polymeric film is on at least one of the first and second surfaces of the cover and the reflection-reduction layer is sandwiched between the film and the wall. The reflection-reduction layer is formed of a material selected from the group consisting of (a) oxides of magnesium, zinc, or aluminum, or alloys thereof, (b) hydroxides of magnesium, zinc, or aluminum, or alloys thereof, and (c) semi-metals and metals which are non-alkali metals and non-alkaline earth metals, alloys thereof, and combinations thereof. The method for making a transparent cover includes (a) applying a reflection-reduction layer onto a polymeric film, (b) placing the polymeric film with the reflection-reduction layer thereon on at least one inside surface of a mold so that the reflection-reduction layer is exposed; (c) filling the mold with a moldable polymer; and (d) allowing the moldable polymer to harden so that a transparent cover having an inmolded reflection-reduction layer is formed.

Instrument panel having cover with reflection-reduction layer and method

An illuminating instrument panel gauge has a movable indicator, a front side for positioning toward a viewer and a back side for positioning away from the viewer. The gauge includes a light source, a subdial surface in front of the light source, a transparent gauge cover in front of and spaced apart from the subdial surface, and graphics corresponding to the movable indicator. The gauge cover has a first surface at the front side of the gauge cover and a second surface at the back side of the gauge cover. Either or both of the first and second surfaces of the gauge cover may be randomly textured. The movable indicator is positioned between the subdial surface and the gauge cover and is preferably closer to the gauge cover than it is to the subdial surface. The graphics are on either the first or second surface of the gauge cover. There may be an overlay between the light source and the indicator which allows light from the light source to illuminate the gauge cover yet hides the light source so that the light source is not visible to the viewer facing the instrument panel gauge. The gauge cover may be curved and, correspondingly, the movable indicator may be shaped to follow the curvature of the gauge cover.

Illuminating instrument panel gauge with indicator and graphics

An instrument panel has a front side for facing toward a driver and a back side for facing away from the driver, a light source, a subdial surface in front of the light source, and a transparent cover in front of and spaced away from the subdial surface. The transparent cover is substantially (preferably, at least 50%) rounded outwardly toward the driver. The instrument panel may include graphics on or in the cover. Due to the curvature of the cover, the graphics may have an outermost portion which is closest to the driver and an innermost portion which is further from the driver. Preferably, the outermost portion of the graphics is narrower relative to the innermost portion so that the graphics appear to be in a plane parallel with the driver. There may be at least three horizontally-spaced transparent covers on one instrument panel, wherein at least one of the covers is an inboard cover and at least two covers are outboard covers, one outboard cover on one side of the inboard cover and the other outboard cover being on the other side of the inboard cover. The outboard covers may be positioned inwardly toward the driver relative to the inboard cover.

Illuminating instrument panel with convex cover

A motor control circuit is disclosed for providing a continuously variable regeneration control. The control circuit includes a microcomputer for generating a power regeneration command signal and a motor command signal, and an armature circuit for use with DC and induction motors. The armature circuit is responsive to the motor command signal for operating the controlled motor in a motor drive mode. The armature circuit is further responsive to the power regeneration command signal for controlling the degree of power regeneration. The armature circuit includes a deadtime generator, responsive to the motor command signal for generating a pair of complementary motor drive signals, the inverted signal of the pair having deadtime. The inverted motor drive signal with deadtime is AND'ed with the power regeneration command signal to produce a power regeneration drive signal. The non-inverted motor drive signal and the power regeneration drive signal are applied to a Class C two-quadrant chopper drive circuit. The chopper circuit alternately and in accordance with these drive signals respectively energizes the motor (motor drive mode) and causes the motor to recharge the battery (power regeneration mode).

Method and apparatus for power regeneration in an electric vehicle motor

A heat exchanger constructed of convoluted fins, a large funnel-shaped opening for air intake and an opening for air exhaust can be efficiently used to dissipate heat generated by high powered semiconductors in an electric vehicle through the use of ram air.

Heat dissipation from high power semiconductors in an electrical vehicle

Front panel for a combined radio receiver and compact disc player

Controller for a compact disc changer

Growing community of inventors

Clarkston, MI, United States of America

James C Carter