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A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
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| Number | Title | Issue Date |
| 7723653 | Method for temperature cycling with inductive heating Apparatus and method for inductive heating of a material located in a channel, to modify the state of the material between flowable and nonflowable states. An internal inductive heating assembly is disposed in the material in the channel, and a signal is supplied to... | 05/25/2010 |
| 7317177 | Electric induction heat treatment of an end of tubular material A magnetic flux concentrator is used to control the end heating of a tubular material in an electric induction heat treatment process. The magnetic flux concentrator may consist of fixed elements, or a combination of fixed and moveable elements to accommodate end he... | 01/08/2008 |
| 7293689 | Two tier brazing for joining copper tubes to manifolds A brazing process for joining copper and copper alloy tubes to a fitting which includes first forming a layer of a high melting temperature noble metal on one end of a copper or copper alloy tube. The plated end is then brazed to a metal ferrule to form a copper all... | 11/13/2007 |
| 7265649 | Flexible inductive resistivity device In one aspects of the present invention, an induction resistivity tool incorporated into a downhole tool string comprises a downhole tool string component comprising a mid-body intermediate first and second tool joints adapted for connection to adjacent tool string ... | 09/04/2007 |
| 7249968 | Electrical connections for harsh conditions Apparatuses are provided which basically comprise a socket which has at least two contiguous passages formed therein which are adapted to receive exposed wire and/or insulated wire. Bonding materials and crimp joints, alone or in combination, are provided to further... | 07/31/2007 |
| 7211773 | Conveyance and forming apparatus A conveyance apparatus comprises a transformer having a core, a primary coil connected to an alternate power source and a secondary coil connected to an output coil, a holding section including a conductive member for heating fluid by high frequency induction heatin... | 05/01/2007 |
| 7157676 | Device with a cooling unit for thermally clamping and releasing tools in shrink-fit chucks A device (10) for thermally clamping and releasing tools (11) in shrink-fit chucks (12), having a socket (15) for a shrink-fit chuck (12), a heating unit (16) that can be moved toward and away from the mounted shrink-fit chu... | 01/02/2007 |
| 7156172 | Method for accelerating oil well construction and production processes and heating device therefor Methods are described for providing localized heating in an oil well at precise depths to accomplish or expedite specific objectives. The methods involve the use of a heating tool which can be lowered into an oil well to apply heat at a precise depth to achieve a de... | 01/02/2007 |
| 7115846 | Shrinking arrangement for tool holder having an induction-heating arrangement A shrinking arrangement for a tool holder is provided which retains a rotary tool with a press fit in a central accommodation opening. The arrangement includes an induction-heating arrangement for thermally expanding the tool holder in the region of the accommodatin... | 10/03/2006 |
| 7087876 | High-frequency melting of interfacial ice An alternating electric field is applied at an ice interface to generate a resistive AC current having a frequency greater than 1000 Hz in interfacial ice. Typically, a first electrode and a second electrode proximate to the interface are separated by an interelectr... | 08/08/2006 |
| 7049557 | Regulated flexible heater A flexible body has a conductive resistance pathway which includes conductive resistance flexible strands of material connected in series between two supply bus flexible strands of material, and a temperature dependent variable resistance pathway with temperature de... | 05/23/2006 |
| 7022951 | Induction heating work coil An induction heating device or work coil for heating electroconductive material to a desired temperature that can be used on a roll or cylinder of any diameter. The work coil has an open core of ferrite material shaped in a U. Wire is wound around the opposing legs ... | 04/04/2006 |
| 6979806 | Regulated flexible heater A flexible body has a conductive resistance pathway which includes conductive resistance flexible strands of material connected in series between two supply bus flexible strands of material, and a temperature dependent variable resistance pathway with temperature de... | 12/27/2005 |
| 6881934 | Production of a cylindrical housing for a double screw extruder A process for producing a barrel for a twin-screw extruder with intermeshing screws from a steel block, wherein the barrel has a wear resistant inner surface, includes producing two partially intersecting bores passing completely through the steel block, the two int... | 04/19/2005 |
| 6713736 | Method and apparatus for manufacturing cylindrical member A cylindrical member including a cylindrical substrate and at least one coating layer thereon is formed through an applying step of applying a coating liquid on the cylindrical substrate and a drying step of drying the coating liquid that has been applied in the app... | 03/30/2004 |
| 6688650 | Dry disconnect fluidic coupling An apparatus and method for a dry disconnect coupling. The dry disconnect coupling includes a first coupling member for coupling to a second coupling member. A circuit provides a first signal based on when the first coupling member is disconnected to the ... | 02/10/2004 |
| 6310334 | Surface current heating apparatus having spaced-apart hollow heat generating members with conductor extending therethrough A surface current heating apparatus including a plurality of hollow heat generating members each of which is made of a ferromagnetic material and has a through-hole and which are spaced apart from each other so as to provide an array of the hollow heat ge... | 10/30/2001 |
| 6285014 | Downhole induction heating tool for enhanced oil recovery The tool comprises one or more core-coil assemblies 2 jacketed in an non-magnetic and electrically insulating, tubular outer housing, 10. The housing enables high power transfer efficiency. A structural skeleton 20 extends longitudinally through the tool ... | 09/04/2001 |
| 6093917 | High frequency heating coil device A high frequency heating coil device having sufficient flexibility and heating ability is provided. Coils 2 are contained in outer jacket 1. The coils 2 are made of steel, copper or brass tubing which is annealed sufficiently to be flexible. Plural pieces... | 07/25/2000 |
| 5994682 | Induction heating device with a quick disconnect terminal and method of use An induction heating device having a pair of inductors in a sub-assembly connected by fluid conduits to a cooling apparatus and by electrical conductors to an inverter and impedance adjusting circuit has a quick disconnect terminal assembly arranged close... | 11/30/1999 |
| 5938964 | High frequency heating method of a bolt with hole A high frequency heating method of a bolt sets a maximum achievable temperature Tmax in an inner surface of the bolt with hole to a value which is not higher than a final heat treated temperature To. A maximum thermal stress ςmax occurring in the bolt wi... | 08/17/1999 |
| 5919388 | Flexible high frequency bar type heater A high frequency bar type heater can be inserted into a hole of an object to be heated even if there is an obstruction above the hole. The high frequency bar type heater has a flexible and slender heat resisting and insulating tube (2) having both its end... | 07/06/1999 |
| 5902509 | Method and apparatus for inductively heating a refractory shaped member A method and an apparatus for inductively heating a refractory shaped member provided with an internal space, particularly for a metallurgical vessel, enable as rapid, uniform heating of the shaped member as possible. An inner inductor is introduced into ... | 05/11/1999 |
| 5786054 | Inductive welding of thermoplastic pipe Forming a novel double containment polymeric piping assembly by interfitting slidably interfittable polymeric inner pipe components, including a first induction responsive layer therebetween, and slidably interfittable polymeric outer pipe components, pre... | 07/28/1998 |
| 5660097 | Hinge ball for variable capacity wobble plate compressors and hardening coil for hinge ball A hinge ball for a variable capacity wobble plate compressor includes a central through hole 27 for permitting a shaft 5 to loosely extend therethrough, and an outer peripheral wall 9b in a convex form for being slidably fit with an inner peripheral wall ... | 08/26/1997 |
| 5635094 | Conformal skate for induction welding A conformal skate for use in an inductive welding system for creating a fusion bond along a bond line between two thermoplastic parts includes a wheel having a circumferential casing made of fluid impervious flexible material. The wheel is rotatably mount... | 06/03/1997 |
| 5523546 | Apparatus and method of inductively heating a workpiece with a slender bone An inductive device can heat a body having a slender bore, with an inductor assembly that includes a coolant system. The assembly has a parallel pair of elongate inductors sized to fit deep inside the bore. Each of these inductors has a distal end and a p... | 06/04/1996 |
| 5488219 | Induction heating coil assembly and method for hardening inner surface of cylinder by using the same An induction heating coil for forming a hardened layer in the inner wall of an external cylindrical member to be heated is disclosed. On the inner wall of the conductive induction member, a plurality of recess portions are formed at predetermined spaces c... | 01/30/1996 |
| 5468937 | Impurity removing system for the delivery of high purity gases A pipe impurity removing apparatus and process is provided, in which moisture adhered on the inner peripheral surface of a supply line can be surely removed, regardless of the pre- or post-completion of a piping execution, and the reduction of its working... | 11/21/1995 |
| 5397876 | High frequency bolt heater having induction heating coil A high frequency bolt heater is provided which can heat up the inside of a narrow hole much faster than a conventional bolt heater employing a resistance wire. The high frequency bolt heater includes an induction heating coil made of a copper tube bent in... | 03/14/1995 |
| 5134264 | Device for the inductive heating of the inside of cylinder liners of reciprocating-piston engines for the purpose of hardening A device for induction heating of the inside of cylinder liners of reciprocating-piston engines to a transformation temperature, for the purpose of hardening. An inductor head is equipper with an aligning device designed as a spreadable cage which is equi... | 07/28/1992 |
| 5032700 | Method of heating thermoplastic bottle of preform and method of controlling temperature of heating member utilized by the heating method This invention relates to a heating method for forming a thermoplastic bottle in which a heating member is inserted into the interior of a preform made from a thermoplastic material or the bottle and the preform or plastic bottle is heated by the heating ... | 07/16/1991 |
| 4849594 | Method and apparatus for shrink fitting metal liner sleeves into inductor heated engine cylinder bores A method and apparatus for installing steel liner sleeves in the cylinder bores of an aluminum engine block comprises axially sliding the liner sleeves onto slide portions of respective mandrels, over an inductor coil on the free outer end of each mandrel... | 07/18/1989 |
| 4683361 | Brazing apparatus having a dual function heating and eddy current probe coil A brazing apparatus and process which utilizes a dual function heating and eddy current probe coil is disclosed herein. The apparatus generally includes a radiant heater assembly having a coil which is capable of both generating radiant heat to effect a b... | 07/28/1987 |
| 4628167 | Apparatus for inductively hardneing the interior surface of objects An induction heating device is provided which can be easily and inexpensively modified to inductively heat and quench harden workpiece bores of various diameters. The device consists of a permanently mounted mandrel and easily interchangeable inductor coi... | 12/09/1986 |
| 4625090 | Apparatus for inductively heat treating workpiece bore walls A method and apparatus of quench hardening to a desired depth the full axial extent of the wall surface, or selected portions of the wall surface, of an axially extending bore in an elongated workpiece wherein the bore has a selected uniform cross-section... | 11/25/1986 |
| 4590347 | Induced current heating probe An induced current heating probe is of thimble form and has an outer conducting sheath (30) and a water flooded flux-generating unit formed from a stack of ferrite rings (10) coaxially disposed in the sheath. The energizing coil (14) is made of solid wire... | 05/20/1986 |
| 4574172 | Brazing wand with fiber optic temperature sensor The brazing wand comprises a hollow helically wound electrically conductive tubular member for conducting an electrical current and for conducting a coolant therethrough. The electrical current is used to heat a member to be brazed while the coolant is us... | 03/04/1986 |
| 4538041 | Rotating induction heating apparatus Apparatus for inductively heating a non-rotating workpiece includes a rotatable spindle of insulating material having a split-ring secondary mounted thereon for rotation therewith and which secondary has opposite ends electrically connected in series with... | 08/27/1985 |
| 4532396 | Flexible induction brazing wand for hollow tubes The brazing wand comprises a hollow helically wound electrically conductive tubular member for conducting an electrical current and for conducting a coolant therethrough. The electrical current is used to heat a member to be brazed while the coolant is us... | 07/30/1985 |
