Bizarre Patents
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 |
| 7392735 | Manual liquid metering device and cartridge Housing is generally tubular and split into two longitudinal hinged halves. Housing receives threads on driver. Retention and anti-rotation means retain cartridge in other end of housing. Cartridge has zero draft tubular wall, and rounds to an extended tip with exte... | 07/01/2008 |
| 7300035 | Valve, actuator and control system therefor A valve actuator comprising a lower housing comprising a mounting spool that is operable to couple to a valve body. A rotating sleeve is disposed within the lower housing and coupled to a stem connector. A fixed sleeve in disposed within the lower housing and includ... | 11/27/2007 |
| 7111834 | Swing-arm clamp A swing-arm clamp is provided. The swing-arm clamp has a piston rod which is disposed therein. The piston rod is movable through the swing-arm clamp in response to movement by the piston along a longitudinal axis between first and second positions. The clamp also ha... | 09/26/2006 |
| 6957752 | Dispenser with sealed chamber and one-way valve for providing metered amounts of substances A syringe is provided for the delivery of controlled, metered amounts of any of numerous different substances to humans or animals, such as medicaments, pharmaceuticals, cosmetics, and food products, or to deliver materials which may react upon exposure to air, such... | 10/25/2005 |
| 6263778 | Precision liquid injection system A liquid injector comprising a tubular spindle having an open end and a partially closed end, a cylindrical piston, a seal mechanism between the spindle and the piston, a tubular driver sleeve to cause the piston to move towards the spindle closed end, an... | 07/24/2001 |
| 5634390 | Rotary actuator Disclosed is a rotary actuator utilizing magnetic screws which are stably rotatable at a great torque with little torque variation. The rotary actuator comprising (a) a closed hollow cylinder, a piston sliding within the cylinder, and a rotary shaft which... | 06/03/1997 |
| 5609090 | Actuator with protective end cap A fluid-powered rotary actuator for providing rotary movement between first and second external members. The actuator includes a cylindrical body with first and second ends. The body is adapted for coupling to the first external member, and a shaft extend... | 03/11/1997 |
| 5477772 | Actuator with protective end cap A fluid-powered rotary actuator for providing rotary movement between first and second external members. The actuator includes a cylindrical body with first and second ends. The body is adapted for coupling to the first external member, and a shaft extend... | 12/26/1995 |
| 5390585 | Rotary motion/constant velocity linear reciprocating motion conversion device and hydraulic system using the same A rotary motion/constant velocity linear reciprocating motion conversion device capable of converting rotary motion into a constant velocity linear motion or vice versa, and a hydraulic system which can minimize a ripple by using the above-mentioned conve... | 02/21/1995 |
| 5309816 | Rotary actuator with external bearings A fluid-powered rotary actuator having a body adapted for coupling to a movable member to transfer rotational force thereto. A drive member includes a flange extending axially outward from a body first end, and a stub shaft extending coaxially within the ... | 05/10/1994 |
| 5170693 | Rotary actuator device with a free floating piston A pressure controlled actuator mechanism is disclosed for imparting rotary control motion to devices, such as valves, having rotary control means. The actuator includes a free-floating piston movable and concentrically disposed within an airtight cylindri... | 12/15/1992 |
| 5148885 | Steerable utility vehicle A utility vehicle having two steerable front wheels. Left and right-fluid powered rotary actuators have their bodies rigidly attached to the vehicle frame with their drive shafts attached to wheel brackets. The front wheels are each attached to one of the... | 09/22/1992 |
| 5054372 | Adjustable shaft actuator A fluid-powered rotary actuator having a body with first and second ends, and a shaft extending generally coaxially within the body. The shaft is supported for rotational movement relative to the body by bearing races formed on the shaft first and second ... | 10/08/1991 |
| 5046402 | Rotary to axial motion converting device with groove in piston guide The device serves to convert rotary motion to hydraulic pressure and vice versa. A piston assembly is entirely located within a cylinder, including a piston head and a piston stem fixed to the piston head. The piston assembly divides the cylinder into two... | 09/10/1991 |
| 4932311 | Fluid apparatus A fluid apparatus includes a pneumatic cylinder having a main body, a piston, and a hollow rod. A ball screw shaft engaged with a ball nut fixed to the piston is rotatably and axially unmovably mounted in the cylinder and extends in the hollow rod. A magn... | 06/12/1990 |
| 4534235 | Rotary stepper actuator A pair (20) of unidirection actuators are opposingly disposed coaxially about an elongated member (1) for controllably imparting a series of stepwise rotary movements thereto. An outer race (5) disposed within a housing (2) is rotationally reciprocated as... | 08/13/1985 |
| 4493246 | Brake cylinder with two pistons A spring-applied, air-released parking/emergency brake is combined with an air-actuated service brake through a friction clutch between the parking/emergency brake piston and a first nut member that is threaded onto a screw rod of the service piston. The ... | 01/15/1985 |
| 4481864 | Hydraulic jack with mechanical safety lock A double-acting hydraulic jack, comprising a hollow piston reciprocable in a surrounding cylinder, includes a tubular shaft extending axially inside and carrying a nut of the circulating-ball type which coacts with a screw coaxially disposed in that shaft... | 11/13/1984 |
| 4426916 | Variable displacement motor The present invention converts longitudinal motion into rotary motion. A reciprocating piston (that may receive a motive force from any desired means) oscillates longitudinally on a drive shaft. Extending through the piston parallel to the drive shaft is ... | 01/24/1984 |
| 4063622 | Fluid pressure operable brake actuators with fluid operable brake sock and release An air operated brake actuator has an air pressure operated brake force applying member, the application to and removal of pressure from which member determines the brake force, another such member which must be separately pressurised to follow the first ... | 12/20/1977 |
