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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 |
| 7395665 | Hydraulic transaxle for garden care vehicle A hydrostatic transmission assembly includes a first gerotor motor, a pump housing, a first variable displacement pump, a second gerotor motor, and a second variable displacement pump. The first gerotor motor includes a first output shaft aligned along a first axis.... | 07/08/2008 |
| 7221736 | Expansion device for fluid coolant/insulation in a x-ray apparatus In an expansion device for an x-ray apparatus, in particular with a rotary piston x-ray tube with a sealed coolant and/or insulation volume under a minimum pressure and pressing with this minimum pressure against an elastic pressure element, an elastic pressure elem... | 05/22/2007 |
| 7093977 | Method and system for cooling heat-generating component in a closed-loop system A system and method for improving cooling of a heat-generating component in a closed-loop cooling system is shown. The system comprises a venturi having a throat which is coupled to an expansion tank that may be exposed to atmospheric pressure in the embodiment bein... | 08/22/2006 |
| 7040093 | Penetration master cylinder with reduced backlash and application thereof This invention relates to a master cylinder of the so-called “penetration” type, in which a cup (3), which is fitted inside a groove (11) of the master cylinder, bears on the wall (20) of a piston (2) in a sealing manner, and in which... | 05/09/2006 |
| 6922994 | Hydraulic pump for vehicles controllable by handlebars A hydraulic pump for vehicles controllable by handlebars, having an unusually small space requirement, including a reservoir suitable for containing a working fluid having a free surface at the top, a pump body provided with a wall which delimits a cavity, and also ... | 08/02/2005 |
| 6014862 | Emulator damping mechanism A brake system includes a pedal feel emulator and a master cylinder with a damping mechanism having a damping piston. When the emulator piston is moved from the at-rest position, fluid is displaced from the emulator through a compensation port and through... | 01/18/2000 |
| 5327724 | Lockable master cylinder The invention relates to a master cylinder comprising a body (12) comprising a bore (14) in which slides, in leaktight manner, at least one piston (16, 18) movable between a rest position and at least one working position and defining at least one pressur... | 07/12/1994 |
| 5313796 | Remote compensation valves for a master cylinder in a brake system A remote compensation valve (20) through which pressurized fluid from a master cylinder (14) is communicated to the wheel brakes (24, 26) of a vehicle. The compensation valve (20) has a housing (200) with a bore (202) therein for retaining a shuttle pisto... | 05/24/1994 |
| 5188204 | Pre-filled power hydraulic system A motor vehicle has a manually operated change speed gearbox driven by an internal combustion engine through a clutch which is automatically disengageable and re-engageable by operation of a power hydraulic clutch control. The hydraulic control comprises ... | 02/23/1993 |
| 5020326 | Hydraulic control system with prefilled pressurized reservoir A reservoir construction for use with a hydraulic clutch actuator for a motor vehicle. The reservoir includes a blow molded bellows portion including a plurality of pleats or convolutions and is arranged to be moved to a stressed expanded condition in res... | 06/04/1991 |
| 4987740 | Assured venting master cylinder diaphragm apparatus and method A diaphragm for a vented master cylinder reservoir which further includes means for opening the slit thereby assuring venting of the master cylinder reservoir is provided. The slit opening means are configured in such a manner that contact of the slit ope... | 01/29/1991 |
| 4773222 | Pneumatic brake booster with booster-cylinder-end retained relay valve A pneumatic-hydraulic booster for vehicle includes a master cylinder part; a pneumatic cylinder part combined with the master cylinder part which includes a power piston slidable fitted to a cylindrical casing and an output rod fixed to the power piston, ... | 09/27/1988 |
| 4771604 | Pneumatic brake booster with relay valve in the booster-cylinder-end A pneumatic-hydraulic booster for vehicles includes a master cylinder part; a pneumatic cylinder part combined with the master cylinder part including a power piston slidably fitted to a cylindrical casing and an output rod fixed to the power piston, exte... | 09/20/1988 |
| 4653272 | Fluid actuation device with compensation for wear Fluid actuation device with compensation for wear, particularly for friction clutch mechanisms of the type having a cylinder in which there are placed a first piston resting on a spring and a second piston extended by a declutching control rod, and in whi... | 03/31/1987 |
| 4599860 | Liquid pressure apparatus A method of shipping and installing a hydraulic system such as a motor vehicle clutch hydraulic release mechanism comprising a driver-operable hydraulic master cylinder, a hydraulic slave cylinder and a conduit connecting the outlet of the master cylinder... | 07/15/1986 |
| 4597263 | Pull type installation tool An improved pneumatic-hydraulic actuated single action pull type installation tool for installing pull type fasteners is disclosed which includes a continuously pressurized fluid reservoir operative to maintain a minimum positive pressure on the hydraulic... | 07/01/1986 |
| 4467605 | Hydro-pneumatic actuator with automatic slack adjuster A two-stage, hydro-pneumatic actuator suitable for use as a railway vehicle brake. The hydraulic cylinder comprises a large diameter bore in which a low- and a high-pressure piston operate jointly during a first stage of operation to effect a high volumet... | 08/28/1984 |
| 4417768 | Braking oil pressure control device for an anti-skid brake system A braking oil pressure control device for a hydraulically operated anti-skid brake system comprising a pair of serially aligned first and second cylinder chambers defined in a cylinder body on the opposite sides of a partition wall. The first cylinder cha... | 11/29/1983 |
| 4372118 | Liquid cable A liquid cable transfer device is provided for transmitting input forces and/or displacements to corresponding output forces and/or displacements. The transfer device includes a section of tubing adapted to accommodate liquid under pressure, and terminal ... | 02/08/1983 |
| 4343155 | Reservoir filling apparatus A hydraulic circuit (10) has a fluid supply source (12) to a work element, such as a control valve (14) for a work implement, connected by a first fluid pathway (18). A second work element (16), such as a master cylinder reservoir of a brake system, has a... | 08/10/1982 |
| 4324100 | Hydraulically controlled mirror A remote control actuating mechanism for adjusting the angular position of an outside vehicle rearview mirror. The mechanism comprises a master control device and a slave device, each having a piston reciprocable within a cylinder. Closed hydraulic circui... | 04/13/1982 |
| 4289162 | Fluid reservoir for brake master cylinder In a fluid reservoir for a brake master cylinder, a cap is coupled over the upper opening of a reservoir casing, and an extendable diaphragm seal member is coupled in a fluid-tight manner within the casing to subdivide the interior space of the casing int... | 09/15/1981 |
| 4192345 | Sealed type hydraulic reservoir A sealed type hydraulic reservoir including a casing for storing brake fluid therein, a cap member detachably mounted on the casing and an elastic diaphragm member dividing the casing into upper and lower chambers. The lower chamber is defined by the diap... | 03/11/1980 |
| 4181147 | Sealed type hydraulic reservoir A sealed type hydraulic reservoir including a check valve for normally preventing communication between a sealed chamber in which brake fluid is stored and the surrounding atmospheric environment. The check valve allows atmospheric air to flow into the se... | 01/01/1980 |
| 4116004 | Hydraulic pulse generating apparatus Hydraulic pulse generating apparatus for actuating one or more slave motors, comprises at least one hydraulic master cylinder, which in use is connected to a slave motor by flexible tubing or otherwise. The master cylinder is fitted with a reciprocating plunge... | 09/26/1978 |
