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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 |
| 7661489 | Roller reamer This invention describes a reaming tool (10) for attachment to a drill string having a body (12) that has connection means (14a, 14b) at either end for attachment to a drill string, at least one roller reamer (16) rot... | 02/16/2010 |
| 7308956 | Method of securing a rotary cutter to a body of a down hole tool and a rotary cutter assembly A rotary cutter assembly constructed in accordance with this method of securing a rotary cutter to a body has a cutter pocket with a first shoulder and a truncated second shoulder. A receptacle extends into the first shoulder. A first retainer retains a first axle e... | 12/18/2007 |
| 7000713 | Blockless reamer A blockless reamer drilling tool comprising an elongated tool body and a reamer unit. The reamer unit includes, a shaft having a first end and a second end and a cutter mounted on the shaft between the first and second ends. A pocket on the exterior surface of the t... | 02/21/2006 |
| 6971459 | Stabilizing system and methods for a drill bit A drill bit stabilizing system comprising a body member having an axis and at least one recess formed in the body member housing at least one stabilizing member when in a first retracted position. The stabilizing member is positionable along a diagonal angle with th... | 12/06/2005 |
| 6527066 | Hole opener with multisized, replaceable arms and cutters A hole opener (10) having a tubular body (11) with threaded ends (12, 14) for connection in a drill string. The hole opener provides slots or grooves (21, 21') along its longitudinal axis (16) into which are inserted cutter arm support members (30, 30', 6... | 03/04/2003 |
| 5381868 | Sealed bearing roller reamer The roller reamer drilling tool includes an elongated body having a fluid circulation bore. A plurality of roller reamer units are mounted circumferentially about the body and are capable of being installed as units within a series of pockets machined wit... | 01/17/1995 |
| 4793425 | Profiled body roller-reamer stabilizer A roller-reamer stabilizer having a plurality of roller cutters mounted in recesses in the supporting body such that each roller is free to rotate in its own bearing blocks. The cutters and bearing blocks are provided with air bleed lubrication and coolin... | 12/27/1988 |
| 4583604 | Roller reamer with rotatably positioned bearing block A roller reamer for an earth boring tool is provided in which rollers are carried by shafts in pockets in the reamer body. The shafts are supported in bearing blocks which have segmental cylindrical surfaces at their widths, and a relatively shorter lengt... | 04/22/1986 |
| 4548284 | Roller ball retention of reamer cutter assembly A roller reamer/stabilizer tool is shown with rolling cutter assemblies removeably retained within elongated pockets in the body of the tool by cap members capturing opposing ends of the cutter axle pin. The cap members are received in sockets adjacent op... | 10/22/1985 |
| 4508184 | Roller reamer/stabilizer A roller reamer/stabilizer apparatus for use on a drill string assembly. The apparatus includes a reamer body which has a number of pockets formed in the body. A cutter assembly is anchored in each pocket. The cutter assembly includes a bearing pin on whi... | 04/02/1985 |
| 4480704 | Reamer A reamer used in earth boring by the rotary method includes a body having a plurality of sockets in its outer periphery. Upper and lower blocks are disposed in the socket for supporting a shaft. A roller is rotatably mounted on the shaft with the inner pe... | 11/06/1984 |
| 4437526 | Milling tool for forming recesses in masonry, concrete and similar material structures A milling tool for forming recesses, such as an undercut in a borehole, in masonry, concrete and similar material structures includes a tool shaft with a bearing pin extending outwardly from one end of the shaft and with the axis of the pin offset eccentr... | 03/20/1984 |
| 4398610 | Roller reamer apparatus A roller reamer assembly for mounting in a longitudinally extending undercut groove in a reamer body and having longitudinally slidable bearing blocks with cooperating locking members for securing the bearing blocks in the groove upon longitudinal movemen... | 08/16/1983 |
| 4261426 | Reamer stabilizer A roller reamer-stabilizer tool includes a tubular body having threaded pin and box connectors at each end adapted to be connected in a drill string and providing a fluid passage connecting the upper part of the drill string with the lower part. Rollers h... | 04/14/1981 |
| 4231437 | Combined stabilizer and reamer for drilling well bores An upper stabilizer and a lower reamer are mounted on an integral or one-piece body adapter to be connected in a tubular drilling string for drilling well bores.... | 11/04/1980 |
| 4227586 | Roller reamer apparatus A roller reamer assembly for mounting in a longitudinally extending undercut groove in a reamer body and having longitudinally slidable bearing blocks with cooperating locking members for securing the bearing blocks in the groove upon longitudinal movemen... | 10/14/1980 |
| 4189012 | Earth boring tool A roller reamer body is provided with junk receiving pockets that are downward extensions of the body cavities in which the rollers and their shaft mounting blocks are disposed. The slots have upwardly slidably openable or removable outside wall panels so... | 02/19/1980 |
| 4000783 | Conical boring tool A self-advancing conical boring tool with frusto-conical roller cutters rotatably mounted to a tapered frame by means of self-aligning spherical roller bearings. Each roller cutter is constrained within a pair of spherical roller bearings for free rotatio... | 01/04/1977 |
