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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 |
| 7201557 | Rotary pressure exchanger A pressure exchanger for the transfer of pressure energy from a high pressure fluid stream to a lower pressure fluid stream wherein a generally cylindrical housing contains a rotor having a plurality of channels extending axially therethrough and a pair of end cover... | 04/10/2007 |
| 6769763 | Cylinder pump, an ink jet printing system using the cylinder pump and a photograph assembly having the printing system Down-sizing of a pump for sucking two types of different fluids is realized. The pump is provided with a cylinder pump having a cylinder main body having a reciprocally movable piston, a first cylinder chamber partitioned at one side of the piston for being introduc... | 08/03/2004 |
| 6652243 | Method and apparatus for filling a storage vessel with compressed gas A storage vessel is filled with compressed gas by filling a first tank with gas from a low pressure gas source. Hydraulic fluid is drawn from a reservoir and pumped into the first tank in contact with the gas. This causes the gas in the first tank to flow... | 11/25/2003 |
| 6540487 | Pressure exchanger with an anti-cavitation pressure relief system in the end covers A pressure exchanger for simultaneously reducing the pressure of a high pressure liquid and pressurizing a low pressure liquid. The pressure exchanger has a housing having a body portion; with end elements at opposite ends of the body portion. A rotor is ... | 04/01/2003 |
| 6183206 | Magnetohydrodynamically-driven compressor A duct is provided having a flattened portion containing a liquid slug of gallium, and a magnetic field is passed through the gallium while an alternating current is also passed through the gallium to produce back and forth motion of the liquid gallium sl... | 02/06/2001 |
| 5810091 | Method for fighting fire by pressing out fire-extinguishing liquid with a gas A method for fighting fire uses a source of fire-extinguishing liquid, a source of gas at an available pressure, and interconnected hydraulic accumulators including at least one gas container and at least one liquid container. The hydraulic accumulators a... | 09/22/1998 |
| 5533868 | Apparatus and method for batch-wire continuous pumping The apparatus of the present invention contains at least one pressure vessel having a separator defining two chambers within each pressure vessel. The separator slideably seals the two chambers. Feedstock is placed within a second chamber adjoining the fi... | 07/09/1996 |
| 5290151 | Process for pumping a multi-phase gas-liquid mixture by means of the use of a pump A process is disclosed, for pumping a multi-phase gas-liquid mixture by using a pump as the thrusting machine, and at least two pumping vessels alternatively performing functions of intake and functions of compression/delivery.... | 03/01/1994 |
| 5211545 | Arrangement for feeding water into a reservoir Arrangement for feeding water into a reservoir located at a level above that of the ocean by utilising energy produced by the movement of waves thereof. An air cushion-forming portion of a first chamber communicates with an air cushion-forming portion of ... | 05/18/1993 |
| 5073090 | Fluid piston compressor A compressor utilizes a fluid piston to achieve high volumetric efficiency and produce moisture-free, clean, compressed fluid. The compressor has two hollow chambers which are interconnected by a conduit system having a pump located in it. The compressor ... | 12/17/1991 |
| 4854783 | Vertical hydro-hoist with adjustable floats and method of operating the same A vertical hydro-hoist for conveying a slurry under pressure by using a liquid obtained from a chemical process as a driving liquid and method for operating the same, the hydro-hoist includes at least one feed chamber and a detector for detecting a relati... | 08/08/1989 |
| 4547132 | Apparatus for continuously transferring a slurry by liquid pressure A part of the driving liquid discharged from an outlet pipe for driving liquid is supplied, under the control of a first flow control means, to a slurry tank in accordance with the amount of the solid matter supplied thereto, so that the concentration of ... | 10/15/1985 |
| 4536131 | Apparatus for continuous pressure feeding of slurry Slurry consisting of water and solid material is fed to fill a plurality of supply chambers arranged in parallel to each other, by the action of slurry pump. The filled slurry is forced to a transferring pipe by the liquid pressure of a high pressure driv... | 08/20/1985 |
| 4460318 | Apparatus and method for transferring slurries Slurry is transferred to a high pressure region by pushing the slurry from the bottom of a transfer vessel with a pressurizing liquid admitted into the top of the vessel. While the pressurizing liquid is being introduced into the transfer vessel, pressuri... | 07/17/1984 |
| 4392784 | Valve arrangement for venting conduits and pumping system including the same A valve arrangement for venting conduits in pumping systems having several pumping units for delivering a gas or vapor generating liquid includes a double-seat valve in which the valving element moves between two extreme closing positions and an intermedi... | 07/12/1983 |
| 4321016 | Apparatus for continuous slurry displacement transfer Slurry consisting of water and solid matters are charged into a plurality of vessels by means of a low-pressure slurry pump, and is discharged into a transfer pipe by fluid pressure generated by a high-pressure driving liquid pump. A float member is posit... | 03/23/1982 |
| 4316703 | Gas compressor The specification discloses a gas compressor incorporating a rotating wheel with cavities therein, the cavities transferring gas into a chamber of elevated pressure while simultaneously using the cavities to transfer a liquid out of that chamber.... | 02/23/1982 |
| 4304527 | System for pumping an abrasive or corrosive fluid A system for pumping an abrasive or corrosive fluid at high pressure and with a variable delivery rate. The system comprises raising the pressure in a non-corrosive and non-abrasive liquid in a pressure raising means comprising pump means and at least two... | 12/08/1981 |
| 4211518 | Method and arrangement for hydraulic conveying of solids An arrangement for hydraulically conveying solids of different specific weights in form of slurries has at least two elongated chambers the effective length of each of which may be varied in dependence on the specific weight of the solid component of the ... | 07/08/1980 |
| 4037992 | Slurry continuous pressure-feeding apparatus With a slurry continuous pressure-feeding apparatus wherein normally three feed chambers alternatively operate to continuously pressure-feed the slurry, in the case of continuously pressure-feedingthe surry by using two feed chambers, the same amount of s... | 07/26/1977 |
| 3967917 | Process and equipment for lifting secondary liquids with the energy of primary liquids One liquid is pumped to a higher elevation by another liquid. In a first stage, the pumping liquid is withdrawn from a chamber and the liquid to be pumped is thereby raised and drawn into the chamber by a siphon effect. In a second stage, the pumped liqui... | 07/06/1976 |
