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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 |
| 7322804 | Metering pump device for a vehicle heater A metering pump device for a vehicle heater includes an inlet chamber, an outlet chamber, a first valve arrangement between the inlet chamber and the outlet chamber, which permits a fluid exchange substantially only from the inlet chamber to the outlet chamber, a di... | 01/29/2008 |
| 7223080 | Double-acting, high pressure cryogenic pump A double-acting, reciprocating piston, high discharge pressure, cryogenic fluid pump having a unique blow-by venting system. In two different embodiments, a double-acting piston has two pair of piston heads and two sets of seals. In a first embodiment, a blow-by ven... | 05/29/2007 |
| 7179060 | Variable discharge pump with two pumping plungers and shared shuttle member The present invention relates generally to variable discharge pumps, and specifically pumps used in fuel injection systems. Typically, such pumps include a dedicated spill control valve for each pumping plunger, that also doubles as an avenue for refilling the pumpi... | 02/20/2007 |
| 6968815 | Actuating device for securing a camshaft of an engine of a motor vehicle in a start position An actuating device for hydraulically securing a camshaft of an engine of a motor vehicle in a start position has a solenoid valve controlling the flow of a pressure medium to a camshaft adjuster with a rotary slide valve that is fixedly connected to the camshaft an... | 11/29/2005 |
| 6843641 | Radial piston pump A radial piston pump for generating high fuel pressure in common rail fuel injection systems of internal combustion engines having a drive shaft which is rotatably supported in a pump housing and is embodied eccentrically, and having a plurality of pistons, in parti... | 01/18/2005 |
| 6634871 | Suction-discharge device for fluids comprising a piston within a rotating inner tube and a plurality of suction and discharge holes An object of the present invention is to provide a suction-discharge device for fluids capable of sucking fluids continuously and discharging fluids continuously under fixed flow rate and pressure, without substantially bringing about pulsations of even o... | 10/21/2003 |
| 6318977 | Reciprocating compressor with auxiliary port A reciprocating compressor that includes an auxiliary port 38 in series with a check valve 40 to move fluid at an intermediate pressure that is between the main suction and discharge pressures. Piston 31 normally covers the auxiliary port during a portion... | 11/20/2001 |
| 6179574 | Apparatus for pressurizing fluids and using them to perform work A fluid transfer apparatus utilizing a slanted cain disk to oscillate and rotate a set of pistons arranged in a circle. Channels associated with the pistons and piston housing effect the transfer of fluid from a first location to a second location, as wel... | 01/30/2001 |
| 5482448 | Positive displacement pump with concentrically arranged reciprocating-rotating pistons A valveless positive displacement pump having pistons that undergo both rotating and reciprocating motion. The assembly comprises a radially outer, ported first cylinder with an axially outer, closed off end, a radially intermediate combination element ha... | 01/09/1996 |
| 5246354 | Valveless metering pump with reciprocating, rotating piston A valveless metering pump includes a simultaneously reciprocating and rotating piston. The pump head includes radially spaced coplanar ports for drawing and dispensing fluids as the piston rotates sequentially past the ports. The reciprocating stroke of t... | 09/21/1993 |
| 5230613 | Common rail fuel injection system A common rail fuel system, primarily including a high-pressure fuel pump, a rail, fuel injection nozzles, and an electronic control system, is disclosed. A substantially constant fuel pressure is maintained within the rail by the fuel pump under the direc... | 07/27/1993 |
| 5219455 | Pump for ice-cream machines A pump with piston for feeding liquid mixture for ice-cream from a tank to a whipping cylinder in a machine for the production of soft-type ice-cream, comprises valve means to connect in an adjustable way the cylinder of the pump with ambient air; a check... | 06/15/1993 |
| 5133645 | Common rail fuel injection system A common rail fuel system is described which consists primarily of a high-pressure fuel pump, nozzles and a rail or rails having a substantially constant rail pressure situated between the fuel pump and the nozzles, the necessary connecting fuel lines and... | 07/28/1992 |
| 5015157 | Pump with multi-port discharge A valveless, positive displacement metering pump is provided which is capable of either mixing two or more fluids or dividing a fluid from an inflow line into two or more outflow lines. The pump includes a housing which contains a cylindrical working cham... | 05/14/1991 |
| 4854835 | Plunger pump A plunger of a plunger pump is formed with an air vent passageway having its one end open to a compression chamber and the other end adapted to communicate with a reservoir space open to the atmosphere when the plunger comes near its top dead point. Air o... | 08/08/1989 |
| 4854825 | Multi-stage vacuum pump A vacuum pump includes two pairs of piston and cylinder assemblies mounted on opposite sides of a crankshaft in a common plane with the gas inlets for the first and second cylinders of a first pair of piston and cylinder assemblies being connected to the ... | 08/08/1989 |
| 4809731 | Liquid injection apparatus having an external adjustor A liquid additive injection pump has a hydraulic motor comprising a differential piston assembly reciprocable in a housing under the urging of a primary liquid into which an additive is to be injected. The piston assembly includes valves to effect the tra... | 03/07/1989 |
| 4790726 | Reciprocatory piston and cylinder machine A reciprocatory piston and cylinder machine particularly suitable for use as a vacuum pump includes a cylinder (17), a cylindrical piston (16) relatively slidably reciprocable within the cylinder (17), and means for substantially sealing the annular space... | 12/13/1988 |
| 4696160 | Pressure pump and injector valve system for liquid-propellant engines A liquid-propellant delivery system using low-pressure propellant storage tanks instead of heavier high-pressure tanks. Liquid propellant material is pumped from the low-pressure tanks by a solenoid-actuated high-pressure pump, and delivered to the rocket... | 09/29/1987 |
| 4560327 | Porting and ducting arrangement A porting and ducting arrangement for a pair of adjacent hollow cylinders includes respective pluralities of passages extending longitudinally in the walls of the cylinders. Each passage is provided with a port in communication with the interior of the as... | 12/24/1985 |
| 4542543 | Impact device A mechanically operated impact tool adapted for use in clearing blockages in clogged waste lines. The tool embodies a pair of telescopically movable sleeves which house an anvil and a reciprocating piston. A coil spring functions to drive the piston again... | 09/24/1985 |
| 4498848 | Reciprocating piston air compressor In a reciprocating piston air compressor, air is induced via an intake valve in the compressor cylinder head and, in addition, air which has been pre-compressed on the rear side of the piston is forced into the cylinder space via slots in the cylinder wal... | 02/12/1985 |
| 4389987 | Control member for fuel injection devices A control member for regulating a flow of fuel to fuel injection devices of an air-compressing internal combustion engine. The control member is adapted to be arranged in one of a zone of the injection valve or within the injection valve. The control memb... | 06/28/1983 |
| 4363296 | Combustion chamber pressure tap A source of gas pressure from an internal combustion engine is made available by tapping off the exhaust products within the combustion chamber, preferably just prior to exhausting the gas out of the engine. A pressure tap fitting communicates with the co... | 12/14/1982 |
| 4259040 | Fuel injection pump for air-compressing fuel-injected internal combustion engine A fuel injection pump for an air-compressing fuel-injected internal combustion engine which includes a first pump piston arranged in each pump cylinder for regulating a fuel control bore of a pump working chamber. A control element cooperable with the pum... | 03/31/1981 |
| 4189287 | Back-up ring for cup seal A brake cylinder includes a housing within which a piston is reciprocable, such piston acting on a cup seal. An annular resilient member of, for example, polyurethane material, is interposed the outer periphery of the cup seal and the adjacent outer perip... | 02/19/1980 |
| 4065236 | Fuel injection pump for an internal combustion engine The pump piston in a fuel injection pump is provided with longitudinal grooves which provide communication between the pressure chamber and the fuel supply chamber. An annular groove on the pump piston connects the longitudinal grooves so that communicati... | 12/27/1977 |
