Tyco Electronics Corporation

Raychem Limited

Switch Bulb Company, Inc.

Other

Daniel A Chandler

Matthew Peter Galla

Shou-Mean Fang

Chi-Ming Chan

Ashok K Mehan

Edward F Chu

Erling Hansen

Bryan P Williams

Rene Jairo Revueltas

Ronald J Lenk

Dennis C Siden

Mark S Thompson

Carol Lenk

Nelson H Thein

Stephen P Tordoff

Michael T Zhang

Martin Matthiesen

Vijay N Reddy

Vijay K Dhingra

Gregory A Graves

Derek Leong

James J Toth

Wayne Montoya

Scott Hetherton

Thomas Bruguier

Randy Daering

David W Curry

William Biddell

Luis A Navarro

Matthew P Galla

Michael Mengruo Zhang

Johnny Lam

An LED bulb having bulb-shaped shell and thermally conductive fluid or gel within the shell. The bulb includes at least one LED within the shell. The bulb includes at least one LED within the shell and a base. The base can be configured to fit within an electrical socket and can include a series of screw threads and a base pin, wherein the screw threads and base pin are dimensioned to be received within a standard electrical socket. Alternatively, the base can be configured to fit within a suitable electric socket.

Heat removal design for LED bulbs

An LED bulb having a bulb-shaped shell, a thermally conductive plastic material within the bulb-shaped shell, and at least one LED within the bulb-shaped shell. The bulb also includes a base, wherein the base is dimensioned to be received within a standard electrical socket.

Plastic LED bulb

A surface mount circuit protection device includes a laminar PTC resistive element having first and second major surfaces and a thickness therebetween. A first electrode layer substantially coextensive the first surface is formed of a first metal material of a type adapted to be soldered to a printed circuit substrate. A second electrode layer formed at the second major surface includes structure forming or defining a weld plate. The metal weld plate has a thermal mass and thickness capable of withstanding resistance micro spot welding of a strap interconnect without significant resultant damage to the device. The device is preferably surface mounted to a printed circuit board assembly forming a battery protection circuit connected to a battery/cell by battery strap interconnects, wherein one of the battery strap interconnects is micro spot welded to the weld plate of the device.

Surface mountable PPTC device with integral weld plate

A foamable copolymer based coupling is provided for securely affixing a light emitting glass lamp in a metal base to form a lamp assembly. The copolymer is preferably selected from ethylene vinyl acetate, ethylene methyl acrylate, and combinations thereof. The foamable coupling may be placed around one end of the glass lamp or in the lamp base before the lamp and base are matingly engaged. The assembled lamp is then heated to a temperature, which causes the foamable coupling to expand and securely affix the lamp in the base.

Foamable adhesive composition

An electrical device which comprises first and second laminar electrodes and a laminar PTC resistive element sandwiched between them, the device comprising

Electrical devices

Foamable coupling for lamp assembly and methods for using the coupling

A process for manufacturing a composite polymeric circuit protection device in which a polymeric assembly is provided and is then subdivided into individual devices (). The assembly is made by providing first and second laminates (), each of which includes a laminar polymer element having at least one conductive surface, providing a pattern on at least one of the conductive surfaces on one laminate, securing the laminates in a stack () in a desired configuration, at least one conductive surface of at least one of the laminates forming an external conductive surface () of the stack, and making a plurality of electrical connections () between a conductive surface of the first laminate and a conductive surface of the second laminate. The laminar polymer elements may be PTC conductive polymer compositions, so that the individual devices made by the process exhibit PTC behavior. Additional electrical components may be attached directly to the surface of the device or assembly.

Process for manufacturing a composite polymeric circuit protection device

An electrical resistive device in which an element composed of a conductive polymer is positioned in contact with the surface layer of one or more metal electrodes. The metal electrode contains a base layer which includes a first metal, an intermediate metal layer which includes a metal that is different from the first metal, and a surface layer which (i) includes a second metal, (ii) has a center line average roughness {overscore (R )} of at least 1.3, and (iii) has a reflection density R of at least 0.60. The conductive polymer composition preferably exhibits PTC behavior density requirements, which may be, for example, circuit protection devices or heaters, have improved thermal and electrical performance over devices prepared with electrodes which do not meet the center line average roughness and reflection density requirements.

Electrically resistive PTC devices containing conductive polymers

A sealable enclosure including a base and a cover attachable to the base, the base and cover have respective mating surfaces, wherein the base and cover form a chamber there between when the cover is attached to the base. A compliant gel sealant is disposed on the mating surface of one of the base and cover for environmentally sealing the chamber, with a visual indicator provided for determining that the chamber is sealed. In one preferred embodiment, the visual indicator comprises a non-opaque window formed in the cover, and a non-opaque tongue extending from the mating surface of the cover, the tongue aligned with the window such that a line of sight is provided through the respective window and tongue. The gel sealant is disposed in a mating groove located about a perimeter of the mating surface of the base and substantially aligned with the tongue when the cover is attached to the base, such that a wetted contact between the gel and a distal end of the tongue, indicating that an environmental seal is formed there between, is visible through the line of sight.

Gel sealant enclosure with visual seal indication

A bi-layer covering sheath has a foamable polymeric inner layer, and a non-foamable non-heat-shrinkable polymeric outer layer surrounding and in intimate contact with the inner layer; the outer layer having a melting point that is at least 60&deg; above the melting point of the inner layer, and the thickness and mechanical strength of the outer layer being such that the sheath retains substantially constant outer dimensions at a temperature sufficient to cause foaming of the inner layer. These sheaths are tubes for covering, generally, elongated substrates such as tubes, rods, wires, and cables, especially tubes, and caps for covering an end of such substrates.

Bi-layer covering sheath

Applicants have created an improved device and method for protecting from the elements wires which have a portion of their electrically insulative covering stripped off, such as spliced wires, and particularly stub-spliced wires. The device comprises (a) a dimensionally-recoverable tubing, (b) a layer of sealant (which preferably also acts as an adhesive) applied to at least a portion of the interior surface of the tubing, and (c) a cap or sheath into which at least a portion of the exposed wires are inserted, wherein at least a portion of the cap or sheath is positioned interior to the dimensionally-recoverable tubing. The cap or sheath includes a configured interior shape for holding the inserted wires, and is designed to permit the adhesive/sealant to flow around the inserted wires. The cap or sheath typically forms a closure at one end of the dimensionally-recoverable tubing or is positioned at or adjacent to a closure end of the tubing. At least the exterior, and preferably all of the cap or sheath is made of non-conductive material.

Device and method for protecting and sealing exposed wires

Growing community of inventors

Menlo Park, CA, United States of America

Daniel A Chandler