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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 |
| 7428814 | Turbine assemblies and related systems for use with turbochargers A turbocharger turbine housing with at least two volutes utilizing multiple nozzle rings to optimize the turbocharger's proficiency per application, and a valve to control the exhaust flow to selected volutes in the turbine housing. ... | 09/30/2008 |
| 7374398 | Automotive compressor An automotive compressor is provided having a casing defining an intake section for fluid for compression, and a delivery section for delivering the compressed fluid. An impeller is movable angularly inside the casing to increase the pressure of the fluid. A distrib... | 05/20/2008 |
| 7121794 | Component assembly for reconfiguring a centrifugal pump A component assembly is provided for converting a conventional centrifugal pump, of the vortex impeller type for example, to a different type of centrifugal pump, such as a spiral impeller pump. The component assembly enables a resident centrifugal pump to be conver... | 10/17/2006 |
| 6979169 | Modular ventilating exhaust fan assembly and method A ventilation exhaust fan is provided, and in some embodiments includes a housing adapted to interchangeably receive a first module having a first support plate and a second module having a second support plate. Each of the first and second modules have at least one... | 12/27/2005 |
| 6929452 | Plenum fan banding Plenum fan banding that effectively changes the width of the fan blades in a plenum fan for a HVAC unit. A removable and replaceable band attaches to the back of a fan wheel of the plenum fan so that the band is located within the circle of the fan blades and extend... | 08/16/2005 |
| 6752589 | Method and apparatus for retrofitting a steam turbine and a retrofitted steam turbine A first steam turbine of a reaction stage design is retrofitted to form a second turbine of a substantially impulse stage design using common components with the first turbine. To retrofit the new steam path into the first turbine, the upper outer and inner shells a... | 06/22/2004 |
| 6691519 | Adaptable modular gas turbine power plant A combustion turbine power plant includes a modular compressor assembly structured to enclose multiple configurations of vanes and blades, a modular combustor assembly structured to be disengagably coupleable to a fuel source, a modular first turbine asse... | 02/17/2004 |
| 6685424 | Method and apparatus for increasing performance of a pump A method and apparatus for improving the performance of a pump uses a pump performance disk kit comprising an impeller disk having a plurality of impeller disk blades extending at angles from a planar surface of the impeller disk such that when the impell... | 02/03/2004 |
| 6135731 | Compact and self-cooling blower assembly A compact air blower assembly operates efficiently at high speeds, such as 10,000 to 12,000 rpm, and can be inexpensively manufactured from a common set of blower parts to provide varied airflow capacities, and satisfy a variety of applications. The compa... | 10/24/2000 |
| 5971702 | Adjustable compressor bundle insertion and removal system A rotary machine, such as a compressor, includes a casing having an annular cavity. The cavity is stepped to include a first circumferential surface of a first size and a second circumferential surface of a second size, less than the first size. At least ... | 10/26/1999 |
| 5785507 | Evaporative cooler pump An evaporative cooler pump is modularized to readily receive pump impellers and pump volutes of different shapes and dimensions in order to optimize the evaporative cooler water pump performance. The flow of water through the pump is streamlined to improv... | 07/28/1998 |
| 5749224 | Extended range thruster system and method of determining thrust An electrohydraulic actuator has a housing divided into pump and cylinder portions respectively containing a centrifugal impeller driven through a hub by an externally mounted motor, and a pushrod actuated by a piston and arranged to advance the piston an... | 05/12/1998 |
| 5603601 | Compressor with attachments mounted on stubs of a housing of the compressor A lateral channel compressor having an annular flywheel housing (1) with air inlet stub (3) and air outlet stub (4). Attachments such as mufflers, filters, or safety valves are connected to stubs. A compact design and a lower manufacturing cost is achieve... | 02/18/1997 |
| 5573376 | Bladed device and method of manufacturing same An apparatus is provided that includes a bladed device having a hub which is rotatable about an axis and one or more blades attached to the hub by self-energizing, self-locking, insertion and retention features which are formed integrally with the blade a... | 11/12/1996 |
| 5567133 | Canned motor and pump employing such canned motor A canned motor for use in a pump has an outer frame casing fitted over a stator, a pair of side frame members welded to respective open ends of the outer frame casing, a can fitted in the stator and joined to the side frame members, and an outer cylinder ... | 10/22/1996 |
| 5564914 | Fluid machine with induction motor A fluid machine system has such characteristics that the flow rate is proportional to the rotational speed, the produced pressure is proportional to the square of the rotational speed, and the shaft power is proportional to the cube of the rotational spee... | 10/15/1996 |
| 5527149 | Extended range regenerative pump with modified impeller and/or housing A regenerative or toric pump adds energy to a fluid using an impeller having an axis of rotation and axially spaced, radially extending first and second surfaces. A casing encloses the impeller and has a fluid inlet and a fluid outlet separated by a strip... | 06/18/1996 |
| 5520512 | Gas turbines having different frequency applications with hardware commonality Power generation turbines having different power outputs for different power grid frequency applications have modular second and third stages, rotors, bucket wheels for all stages and other ancillary parts. The first and second turbines have sizes not geo... | 05/28/1996 |
| 5342169 | Axial flow turbine In an axial flow turbine with a row of individually adjustable guide vanes (8) and a row of rotor blades (5), the guide vanes can be rotated by an adjusting shaft (9) supported in a casing (4) and passing through a vane carrier (3). The tips of the rotor ... | 08/30/1994 |
| 5312231 | Slurry conveyor device The objects of the invention are to prevent the backflow of slurry by first enclosing it in a closed space and then using air to force it along a discharge channel, and at the same time to ensure the smooth throughput of the slurry by causing any foreign ... | 05/17/1994 |
| 5275533 | Quiet compressed air turbine fan A compressed air turbine driven fan having an axial blade fan impeller driven by a partial admission radial inflow air turbine, with both the fan blades and the turbine blades mounted on the hub rim of a single fan-turbine wheel. The turbine exhaust is di... | 01/04/1994 |
| 5199848 | Portable water driven pump A compact water turbine driven water pump comprising an impeller driven by an axial flow water turbine wheel both operating on a single shaft and contained in a housing. A nozzle body also contained in the housing comprises a plurality of nozzles through ... | 04/06/1993 |
| 5178520 | Double centrifugal pump with single casing and adapter insert A centrifugal or rotary double pump has a singular circular casing surmounting two motors driving individual rotors within the casing. Above a flat side of the casing is attachable to the device serviced by the double pump and receives an insert defining ... | 01/12/1993 |
| 5114312 | Slurry pump apparatus including fluid housing A slurry pump is provided having an impeller housing with an impeller chamber receiving an impeller having a rotation axis and a plurality of wedge-shaped pockets on a fluid engaging face. A fluid housing is adjacent to and cooperates with the impeller ho... | 05/19/1992 |
| 5110256 | Methods and apparatus for attaching a flow guide to a steam turbine for retrofit of longer rotational blades Improved methods and apparatus for retrofitting longer last row rotational blade assemblies in steam turbines are disclosed. The apparatus of the present invention permits the exhaust flow guide to be mounted directly to modified last row stationary turbi... | 05/05/1992 |
| 5076758 | Centrifugal pumps A centrifugal pump including a cup-shaped housing closed by a casing cover having inlet and outlet ports and enclosing a pump impeller mounted on a shaft driven by an external driver. The centrifugal pump impeller discharges fluid into a helical passage a... | 12/31/1991 |
| 5013214 | Portable water driven high velocity fan An portable water driven high velocity fan. Contained in a cylindrical housing is a turbine nozzle body in which a plurality of cylindrical or part cylindrical and part conical nozzles are provided. The nozzles make an angle of about 10 to 30 degrees with... | 05/07/1991 |
| 4957504 | Implantable blood pump An implantable blood pump (10) for providing either continuous or pulsatile blood flow to the heart. The pump includes a stator (16) having a cylindrical opening (14), an annular array (36 or 38) of electromagnets (40, 42) carried by the stator concentric... | 09/18/1990 |
| 4923367 | Submersible pump with plastic housing A submersible pump having a plastic housing and adapted to accommodate multiple pump stages. The housing includes a pair of housing halves which enclose the impeller cartridges of the pump and an adjustment cone to retain the impeller cartridges for prope... | 05/08/1990 |
| 4902199 | Universal blower A multifunction blower in which a common housing is employed to both increase and decrease the pressure of incoming air in separate chambers thereof. The increase and decrease in air pressure is adjustable by changing the impellers of the pressure and vac... | 02/20/1990 |
| 4810174 | Motor and pump assembly A motor and pump assembly having an intermediate mounting bracket adapted to conveniently join and support the separate motor housing and pump housing. The bracket is configured to accommodate the mounting of either a partial motor or a full motor design ... | 03/07/1989 |
| 4778334 | Centrifugal pump The centrifugal pump has a pair of multi-stage sub-blocks wherein the impellers are shrink fitted onto the shaft. The impellers on the drive-side sub-block have shrunk fit regions in the side away from the inflow while the shrunk fit regions of the impell... | 10/18/1988 |
| 4775294 | Tubular centrifugal fan A centrifugal fan having a tubular housing in which an inlet funnel and fan assembly are contained. The fan assembly includes a fan wheel with the fan wheel inlet and inlet funnel overlapping during normal fan operation. A motor is connected to drive the ... | 10/04/1988 |
| 4773765 | Blender pump adaptor A pump housing is substituted for the food container of a blender. The blender blades act as a pump impeller and cause liquid to flow from a housing inlet, through the housing, and through a housing outlet. The pump housing therefore modifies a blender in... | 09/27/1988 |
| 4764083 | Discharge ring supporting structure of adjustable-blade axial-flow turbine A discharge ring supporting structure of an adjustable-blade axial-flow turbine comprises upper and lower halves separated along a horizontal plane passing through the central axis of the discharge ring. The lower half of the discharge ring is supported b... | 08/16/1988 |
| 4695225 | Axial swirl body for generating rotary flows Rotary flows are generated in a variety of technical installations. In these uses, the particular properties of the rotary flows generated and consequently those of the swirl generator itself play an essential part. Thus, for example in burner construction, a ... | 09/22/1987 |
| 4688293 | Vacuum cleaner According to the invention, a canister with bottom and peripheral walls defines an accumulation space for matter picked up by the vacuum. A lid is secured to the upper edge of the canister and seals the space. The invention resides in the provision of a c... | 08/25/1987 |
| 4676717 | Compressor housing having replaceable inlet throat and method for manufacturing compressor housing A compressor housing (30) is disclosed of the type characterized by having a centrally-disposed, concentric, flow restricting inlet throat in fluid communication with an encircling fluid conduit having a tangentially disposed outlet. Compressor housing (3... | 06/30/1987 |
| 4674953 | Multistage hydraulic machines A multistage hydraulic machine is vertically positioned within a pit. The main shaft of the machine is divided into an upper main shaft and a lower main shaft at the location of the lowest pressure stage runner. A side path is provided laterally from the ... | 06/23/1987 |
| 4669164 | Method and apparatus for the manufacture of variable dimension fans Construction of impellers of various dimensions are manufactured from tubular hub stock and sheet-like blade stock by cutting a hub of particular length from said hub stock and blades of corresponding length from said blade stock and attaching said blades... | 06/02/1987 |
