Other

Koninklijke Philips Corporation N.v.

Tir Systems Ltd.

Laserphysics, Inc.

Bruce R Walker

Kevin D Ostler

Calvin D Ostler

Miles F Elledge

Marc C Cimolino

Marc Kevin Uhrey

Light Emitting Diode Light Sources for Dental Curing are disclosed. Some embodiments of the invention include structures such as Light Emitting Diode Array(s), heat sink, heat dissipation, heat pipe, and control circuitry are disclosed.

Light emitting diode light source

Light emitting diode light source for curing dental composites

A system and method are disclosed for providing a laser beam that is varied, such as being pulsed or modulated, rather than being a laser beam of constant intensity. Specific circuitry that includes timing and triggering means for pulsing a laser beam is disclosed, and methods and software for modulating a laser beam are disclosed. Pulsed and modulated laser beams have wide variety of applications, including curing polymeric materials such as dental composites. Modulated light from sources other than lasers may also be used for such curing.

System for producing a pulsed, varied and modulated laser output

A completely self-contained and portable alarm system that senses a condition in which a refrigerator or freezer door is not fully closed using a plurality of spring-tempered metallic sensor switches and which provides an audible tone from a piezoelectric transducer. By means of a selector switch, the alarm can occur either immediately upon opening the appliance door, after a predetermined delay has expired, or the alarm can be disabled by removing power from the electronic circuit. Compared to other refrigeration alarm systems this invention is not integral to the appliance itself; it senses only door-ajar conditions; is powered by common direct current means; and its mounting location is highly flexible. It can be easily installed by magnetic means on either side, or top of the appliance near the door by simply placing it where desired, accommodating a large number of new as well as older appliance models. Since this invention does not depend on sensing a temperature change within the appliance, the audible door-ajar warning can be given before internal temperatures change substantially, allowing the undesirable condition to be remedied much earlier than would be the case if temperature sensing were done, thus helping to prevent loss of perishables and to save energy.

Portable refrigeration door open alarm apparatus

Growing community of inventors

West Jordan, UT, United States of America

Bruce R Walker