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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 |
| 7866196 | Tank wall and method and system for making A method for manufacturing a circular metal tank, from an elongated sheet of metal. The upper and lower longitudinal edges of the metal sheet are bent to produce a first “L” bend and a second “chair” bend, respectively. The sheet of metal is moved in a helic... | 01/11/2011 |
| 7730754 | Apparatus and method for manufacturing spiral duct Provided are an apparatus and method for manufacturing a spiral duct in which straight connection parts are integrally formed with both ends of a curved duct. Further provided are an apparatus and method for manufacturing a spiral duct capable of improving cutting q... | 06/08/2010 |
| 7404308 | Apparatus for producing helically corrugated metal pipe and related method A pipe manufacturing system and method for producing helically corrugated metal pipe is provided. The system and method utilize controlled profile formation. ... | 07/29/2008 |
| 7228030 | Method and apparatus providing an output coupler for an optical beam An optical output coupler having a reflector integrated in an evanescent coupler. In one aspect of the present invention, an apparatus according to an embodiment of the present invention includes first and second optical paths. An optical beam is to be directed thro... | 06/05/2007 |
| 7228031 | Method and apparatus providing an output coupler for an optical beam An optical output coupler having a reflector integrated in an evanescent coupler. In one aspect of the present invention, an apparatus according to an embodiment of the present invention includes first and second optical paths. An optical beam is to be directed thro... | 06/05/2007 |
| 7137281 | Process and apparatus for forming oversized circular pipe A process for forming oversized circular pipe has the steps of affixing an elliptically-shaped forming head onto a spiral pipe forming machine, driving a metal strip along the forming head such that the metal strip takes on a shape of the forming head, moving said m... | 11/21/2006 |
| 7040569 | Winding tube and method for the production thereof The invention relates to a winding tube for winding up bands, films, sheets of metal or similar made of a spiral shaped wound metal strip whose adjacent strip windings overlap at least partially. The metal strip has a corrugated or ribbed profile in the cross-sectio... | 05/09/2006 |
| 6460236 | Apparatus for producing wrapped slip tubes An apparatus for producing wrapped slip tubes from ribbon material (3), which consists of metal at least in part, comprising a profiling device (4) for forming seam edges (3a, 3b) of the ribbon material (3), at least one guiding surface (6a) for guiding t... | 10/08/2002 |
| 6453710 | Method and apparatus for manufacturing a helically-wound lock-seam tube having air nozzles In a method of manufacturing a helically-wound lock-seam tube for a ventilation duct system, the tube is provided with a plurality of air nozzles through its wall. The method involves the steps of: feeding a strip of sheet metal from a supply to a punchin... | 09/24/2002 |
| 6378193 | Process for manufacturing a flexible continuous tube The invention concerns a method for the continuous production of a flexible tube body from two stapled wires (9, 10) individually bent in bending means (7, 8), three stitches, unsupported by a mandrel, and such that wires (9, 10) remain constantly in cont... | 04/30/2002 |
| 6339945 | Apparatus for forming tapered spiral tubes Apparatus for forming tapered spiral tubes from strips, is disclosed. The apparatus comprises a spiral tube forming system for forming a strip into a spiral tube; a strip infeed system adapted for feeding a strip to the pipe forming system; and computer-c... | 01/22/2002 |
| 6145732 | Cylindrical helical seamed tube and method and apparatus therefore A cylindrical helical seamed metal tube wherein the seam thereof is at an angle of between 1 and 25 degrees with respect to the axis of the tube. A method of making the tube comprises the steps of continuously feeding the metal strip into a tubing former ... | 11/14/2000 |
| 6003220 | Method and apparatus for producing helically wound lock-seam tubing In a method for producing helically wound lock-seam tubing, a metal strip is fed to a forming head in which the tubing is formed. In order to prevent lock-seam slip, a clinching roller device form interlocking spaced deformations on the lock-seam. An appa... | 12/21/1999 |
| 5916642 | Method of encapsulating a material in a carbon nanotube A method of encapsulating a material in a carbon nanotube comprising generating a vapor of the material to be encapsulated, generating a hydrogen arc discharge that discharges encapsulating products, and contacting the vapor of the material and the produc... | 06/29/1999 |
| 5720095 | Method and apparatus for producing helically wound lock-seam tubing In a method for producing helically wound lock-seam tubing, a metal strip is fed to a forming heed in which the tubing is formed. In order to prevent lock-seam slip, a clinching roller device forms interlocking spaced deformations on the lock-seam. An app... | 02/24/1998 |
| 5014424 | Method of making a curved pipe A bent pipe is made of a metal strip having one edge in a straight line and the other edge in a curved line by winding it helically. A double fold and a single fold are formed along the straight edge and the curved edge, respectively. Then the metal strip... | 05/14/1991 |
| 5001819 | Apparatus for forming perforated tubes The invention provides that a strip of flat steel is formed at its edges with channels which face in opposite directions and the strip is perforated between the channels. The strip is spirally coiled into tube form and a flange of one of the channels enga... | 03/26/1991 |
| 4884426 | Device for spiral winding of tapes An apparatus for the spiral winding of tapes for the continuous production of tubes without a core and having an angular cross-sectional area. A tape is guided centripetally along a convexly curved conducting surface situated in the tube being formed, the... | 12/05/1989 |
| 4774827 | Process of spirally winding tapes A method and a device for the spiral winding of tapes for the continuous production of tubes without a core and having an angular cross-sectional area. A tape is guided centripetally during each bending process along a convexly curved conducting surface s... | 10/04/1988 |
| 4704885 | Apparatus for making connecting pipes for connecting ducts A curved connecting pipe for ducts is proposed which can be manufactured at low cost. It is made by rolling spirally a long metal strip having wide portions and narrow portions alternately so that the wide portions will meet at one edge of the strip and t... | 11/10/1987 |
| 4693149 | Device for the automatic cutting of cardboard and other tubes The invention concerns a device for the automatic cutting of circular tubes of small, medium and large thickness, obtained by gluing together several strips of fibrous, cellulose, metallic, or plastic materials, and generally speaking any materials in str... | 09/15/1987 |
| 4622838 | Apparatus for manufacturing flexible corrugated tubes Apparatus for helically curling longitudinally corrugated thin strip material into a flexible corrugated tube has a curling unit with driven input rollers forming a nip that matches the strip, and a cassette for a reel of the material which is connected t... | 11/18/1986 |
| 4567742 | Ribbed spiral pipe producing machine An apparatus for producing multiple ribbed, spiral seamed pipe from a metal strip thinner than 29 gauge is disclosed. The apparatus includes the conventional elements of a frame, a drive roller for feeding the strip through the frame, a flange roller and ... | 02/04/1986 |
| 4353232 | Apparatus for making corrugated tubing and method for joining corrugated tubing This apparatus contains a plurality of die-forming roller pairs which form corrugations longitudinally in ductile strip material. The die-forming rollers are gear driven from an electric motor of adjustable speed. One die roller of each pair has an eccent... | 10/12/1982 |
| 4337564 | Machine and method for forming tubes from a strip The method of forming tubes from strip in which a complementary rib and groove are spaced apart to each extend longitudinally on the strip and oppositely facing on the said strip characterized by guiding the strip into a helical configuration to overlap t... | 07/06/1982 |
| 4287739 | Method for producing a helically wound pipe having a predetermined diameter A method for forming helically wound pipe from an elongated sheet of material having a longitudinal axis wherein markings are provided perpendicular to said longitudinal axis adjacent the edges of the elongated sheet of material at predetermined spaced in... | 09/08/1981 |
| 4161811 | Method and apparatus for the manufacture of reinforced smooth flow pipe A method and apparatus for the continuous manufacture of reinforced, spirally wound pipe having a generally smooth inner wall produced from an elongated flat sheet of ductile material, such as galvanized steel, and one or more narrow strips of ductile mat... | 07/24/1979 |
| 4160312 | Method and apparatus for making multi-layer spiral pipe An apparatus and method for continuously forming multi-layer metal pipe from at least two elongated sheets of metal. One sheet is impressed with longitudinal corrugations in a rolling device and the second sheet, being uncorrugated, is then positioned con... | 07/10/1979 |
| 4096720 | Apparatus for making corrugated flexible metal tubing A readily adjustable machine which continuously produces corrugated flexible metal tubing from very light gauge metal and of various diameters. A warping ring receives therewithin a longitudinally corrugated narrow strip of formable metal of light gauge a... | 06/27/1978 |
| 4085604 | Method of making corrugated flexible metal tubing A readily adjustable machine which continuously produces corrugated flexible metal tubing from very light gauge metal and of various diameters. A warping ring receives therewithin a longitudinally corrugated narrow strip of formable metal of light gauge a... | 04/25/1978 |
| 4058997 | Apparatus for manufacturing tubes This invention relates to apparatus for manufacturing tubes by the helical coiling of a strip into successive convolutions. The strip is preferably of a corrugated sheet metal. The coiling means of the apparatus comprises a plurality of non-driven freely ... | 11/22/1977 |
| 4048827 | Apparatus for forming a large diameter pipe An apparatus for helically winding a strip of sheet metal into a large diameter pipe and connecting the edges of the strip by preforming and rabbeting. The edge bending for the rabbet is done in a preforming station and a rabbeting station in which the be... | 09/20/1977 |
| 3982414 | Machine for making corrugated flexible cylindrical duct Corrugated, flexible, metal duct formed of a helically wound strip of lightweight metal characterized by a pair of interlocked U-shaped seam elements which constitute one leg of a common corrugation of contiguous convolutions of the strip and extend radia... | 09/28/1976 |
| 3940965 | Method and apparatus for forming corrugating pipe A corrugated pipe forming apparatus and method in which flat sheet metal is passed through a plurality of first and second opposite roller pairs and deformed into a corrugated sheet. Lateral lips are formed parallel to the edges of the sheet and extend ge... | 03/02/1976 |
| 3940962 | Conduit making machine with diameter control and method A machine and method for making spiral pipe from a continuous strip of sheet metal including a corrugating mill which forms corrugations in the strip and drives it through a three-roll bending mill which bends the strip into helical convolutions and guide... | 03/02/1976 |
